Haldia Institute of Technology Haldia West Bengal - 721657 India January 2014 School of Engineering From Director’s Desk Editorial In this millennium “Knowledge is power” and this is where HIT gives its students the finest in terms of true knowledge. Industrial revolution commenced with the steam engine advanced through era to develop the art of management. Haldia Institute of Technology offers its students courses from Engineering to Management making them the just ingredients for a flourishing organization. We are a one stop solution for a thriving career building of students who connect us. HIT was founded in the year 1996 with a sole endeavor of imparting quality technical education to the students. I am happy to state that the management has taken keen interest in employing qualified and experienced faculty and equipping the laboratories with modern and newest equipments. The library has adequate number of books where the faculty and students can download more than thousand technical journal papers. With the resources available the students are competent enough to carry on project works on latest topics and get experience and improve their probability of employment. We are serving the students to acquire training in software skills and communication skills and also helping them to sharpen their talents in English language both in written and communication, essentials for expressing themselves. Experts from reputed institutions, industries and R & D establishments are invited to deliver lectures to students on topics beyond their regular curriculum to broaden their knowledge in various subjects. These deeds are helping the students not only in enhancing their Subject knowledge but also helping them to augment their employment opportunities. I am happy to say that the management is encouraging the faculty to improve their qualifications by deputing them for Ph.D on full or part time basis and also encouraging them to attend seminars, conferences, workshops etc., The institute is committed in creating an ambience for nurturing innovation, creativity and excellence in our students. We strongly support interdisciplinary research and development for the benefit of Industry and Society. Students are given abundant opportunities for recreation of their talent via various on campus activities as sport, tech fests, seminars, etc. We provide the base for the holistic development of students and not just their academics with vivid infrastructural facilities. This helps our students to live up and win various competitions across the country bringing them into the lime light of blue-chip companies willing to recruit them. I assure that students will receive our best and create a strong foundation for their career. While we have enough reason to celebrate what we have achieved, we must not be complacent about that. Success must motivate us to realize more and must not make us oblivious towards our short comings. I take this opportunity to acknowledge the contribution of students, teachers and non-teaching staff in bringing laurels to our institution. Electricity has become an indispensable part of human life style in modern times. Right from the first hours in the morning till we go to bed, in each and every corner of our life we have become almost a slave of electricity. From the starting point of generation of electricity in power stations to its use in remote corners of household, there in undisputed reliance on the use of electrical appliances and equipments in our every day life. In this regard, Electrical engineering and its allied branches of Instrumentation, and Control Engineering have gained immense importance in recent past. These core branches of engineering are evergreen, with undisputed demand in the engineering industry. Job market for these courses will rarely fluctuate and this field promises a huge scope in India and abroad. This includes the scope for job as well as research and higher studies. Despite being some of the oldest streams of engineering, these programmes have adapted themselves to the changing technology and industry demands. Electrical engineering and its allied branches are considered the mother of all streams of engineering and are seen as few of the most desired and rewarding areas of specialization. This field is an applied science stream that deals with the study of electricity, electronics, control, instrumentation, and electromagnetism. They specialize in designing and building systems and machines that generate, transmit, measure, control and use electrical energy essential to modern life. These disciplines are grounded in sciences and mathematics and provide intense training in all essential subjects of electrical science such as electrical circuits, power systems, rotating electrical machines, electrical measuring instruments, process dynamics and control, sensors and transducers and automatic control systems. This News Bulletin is a sincere attempt to portray the salient achievements of the branches of Electrical Engineering, Electronics & Instrumentation Engineering, and Instrumentation and Control Engineering at Haldia Institute of Technology. Every effort has been taken to provide the reader with sufficient and succinct information about the various activities of these departments. I hope that the reading will be informative and enjoyable. Prof. A. K. Dey Dr. Prithwiraj Purkait Professor, Department of Electrical Engineering Dean School of Engineering Inside this issue Department of Electrical Engineering Department of Applied Electronics & Instrumentation Engineering Department of Instrumentation & Control Engineering 1 – 13 14 – 18 19 – 23 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Student Intake : 120 per Academic Session Intake Quality : Top 10% of WB Joint Entrance Exam Faculty Profiles Name of the Faculty Prof. P. Purkait Designation Dean, School of Engineering Qualification Post Doc., PhD, MEE, BEE (JU) Dr. Santanu Das Associate Professor & Head Associate Professor PhD (JU), MEE, BEE (BESU) Assistant Professor Assistant Professor Assistant Professor Assistant Professor Assistant Professor Assistant Professor Assistant Professor Assistant Professor M.Tech, B.Tech (WBUT) Experience 1 yr industry 15 yrs teaching & research 1 yr industry 11.5 yrs teaching & research 1 yr industry 9 yrs teaching & research 5 yrs teaching M.Tech, B.Tech (WBUT) 5 yrs teaching M.Tech (IIT Roorkee), B.Tech (REC Rourkela) MEE (JU), B.Tech (WBUT) 1 yr industry 5 yrs teaching 3 yrs teaching MEE (JU), B.Tech (WBUT) 3 yrs teaching MEE (BESU), B.Tech (WBUT) 3 yrs teaching MEE (JU), B.Tech (WBUT) 3 yrs teaching M.Tech (IIT-Kgp), B.Tech (WBUT) 1 yr teaching Indrayudh Bandyopadhyay Goutam Das Sandip Kumar Ojha Rasmilata Naik Parthasarathi Satvaya Piya Roy Sourav Kumar Das Shubhasish Sarkar Debabrata Barman M.Tech. (NIT-Dgp), B.Tech (NEHU) Major Laboratories Electrical Machines Lab Power Systems Lab Power Electronics Lab Basic Electrical Engineering Lab Circuit Theory & Networks Lab Electrical and Electronic Measurements Lab Analog & Digital Electronics Lab 1 News Bulletin Department of ELECTRICAL Engineering Introduction AC Machines Lab DC Machines Lab Electrical Machine Design Lab Power Systems Lab Control Systems Lab Power Electronics Lab Electric Drives Lab Microprocessor Lab Power System Protection Lab Accreditation Accredited by AICTE (NBA) for Excellence in Technical Education for 3 years in 2011. 2 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Student Achievements University Positions 5% above 9 DGPA, 37% above 8 DGPA Dibyendu Mondal secured first position in University examination receiving University Gold Medal in the year 2011 Sudip Karmakar secured third position in University examination receiving University Bronze Medal in the year 2011 Higher Studies 60 number of students have qualified GATE examination (2006 -2013) 9 number of students have qualified CAT/MAT examination (2006 -2013) 4 students have qualified GRE (2006 -2013) o Angikar Sarkar (2008) received his MS from UGHS, Texas o Sagnik Mukherjee (2010) admitted for Masters in Electrical Engineering in Kempten University of Applied Sciences in Germany o Arnab Kumar Majee (2011) admitted for PhD in Princeton University Graduate School, USA. 6 number of students have got admission for M. Tech in IITs (2006 – 2013) o 2 students in IIT Kharagpur during the year 2009-2013 Saswata Sekher Roy (2009-2011) Debabrata Barman (2011-2013) o .2 students in IIT Roorkee during the year 2008-2014 Bidyut Kanti Paul (2008-2010) Pallav Kumar Bera (2012-2014) o 1 student in IIT Bombay during the year 2012-2014 Sourab Halder (2012-2014) o 1student in IIT Delhi during the year 2010-2012 Raman Devesh (2010-2012). 5 number of students have got admission for M. Tech/ME in NITs 10 number of students have got admission for M. Tech/MEE in Jadavpur University (JU) 8 number of students have got admission for M. Tech/MEE in Bengal Engineering and Science University (BESU) 3 News Bulletin Department of ELECTRICAL Engineering Introduction Students’ placements Public Sector organizations (Both Central and State) Private organizations Teaching / Research /Faculty Positions NHPC, DVC, WBSEDCL, WBSETCL, PDCL, ASEDCL, MECON, Coal India Ltd, BARC, ISRO, DPCL, DSP, Maharashtra State Electricity, Power Grid, NTPC, BHEL, Indian-Rail, Indian Airlines, IPRI, SAIL, Hindustan Petroleum Corporation Ltd., HZL, ISPAT Ind, GPIL, PWDWB Core Sector Alstom, Vedanta Aluminium Ltd., Jindal Steel, Jindal Power Ltd., BOC Ltd., HPCL-Haldia, L&T ECC, ITC, Shristi Group, Tata Power, Tata Chemical, Adani, Himadri Chemicals, Bygging India Ltd., Renuka Sugars, Super Gas, Emami Biotech, HNG, DCPL, ITC Food Division, CUMMINS , Manaco EnerGy Environmental Systems, ADANI- WILMAR LTD., Danieli, CESC Ltd., Reliance Industries, Dhunseri Petrochem & Tea Ltd, Century Exclusion Ltd, Nortel, SIEMENS, IHCL (TAJ), Birla Cement, TVS Motor Company Ltd, Air Liquid, Tata Steel Processing & Distribution Limited, Durgapur Power Company, Tata Projects Limited, TM LOGISTICS, ICICI Bank, Biecco Lawrie, Petro Carbon & Chemicals, Wartsila, Sonic Thermal Limited, Elcome Marine Services Pvt. Ltd., IFB Industries Ltd, Aditya Birla Insulator, Abhijit Group, Powergen Technical Services Pvt. Ltd., GMR ENERGY, Exide Industries Ltd. Software (IT Sector) TCS, CTS, WIPRO, IBM, Infosys, Tech Mahindra, SkyTECH Solutions Pvt Ltd, Mphasis, Connectiva Systems Pvt. Ltd., CF Services Pvt. LTD (Australia), Simplex, Darius Technical Services, Accenture Assistant Professor at Haldia Institute of Technology Goutam Das (2006), Sandip Kumar Ojha (2006), Piya Roy (2007), Shubhasish Sarkar (2009), Debabrata Barman (2011) Research Fellow at Haldia Institute of Technology Debanjan Mukherjee (2009), Padma Palas Das (2011), Pranab Kumar Hembram (2011) Lecturer at Global Institute of Technology Somsubhra Panda (2008), Mrinal Chakraborty (2009), Ananya Pramanik (2009), Janardan Sarkar (2009), Dipam Basu (2010) Assistant Professor at Dr. Sudhir Chandra Sur Degree Engineering College Sayantan Chakraborty (2006) Assistant Professor at IMPS college of Engineering & Technology Jyotirrmoy Barman (2007) Assistant Professor at CEM Kolaghat Bidyut Kanti Paul (2008) 4 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Assistant Professor at Asansol Engineering College Abhijit Maji (2008) Assistant Professor at Batanagar Engineering College Kalyan Kar (2008) Research Student, Hokkaido University Tanveer Ahmed (2007) Assistant Professor at Camellia Institute of Technology Saikat Mandal (2009) Assistant Professor at Jiaganj College of Engineering and Technology Soumodeep Samanta (2009) Assistant Professor at Ramakrishna Mission Shilpamandira Tuhin Suvra Dey (2010) Lecturer at Durgapur Womens College Himadri Sekhar Mondal (2011) Junior Scientist at IPR Arnab Dasgupta (2010) Amba Research Supratik Shankar (2007) Assistant Professor at Calcutta Institute of Engineering and Management Raju Patwari (2008) Industrial Training: IOCL, HPL, HDC, WBSEDCL, WBSETCL, WBPDCL, NTPC, NHPC, Metro-Rail, Tata Power, Tata Chemical, Hooghly Met-Coke-Haldia, DSP, Indian Railways, RVNL, Adani Wilmar-Haldia, Adityapur Transmission Division, Bhilai Steel Plant, SAIL, SAPL, BHEL, SIEMENS-Thane etc. 5 News Bulletin Department of ELECTRICAL Engineering Introduction Student Project Quality [Leading to publications / Product development/ Internal resource development] Development of a low cost PC based multi-channel oscilloscope Development of an instrument for dielectric diagnostics of transformer insulation Development of stator winding fault diagnosis system employing image processing tools Development of De-trended Fluctuation Analysis (DFA) based fault diagnosis system for induction motor. Development of Micro-controller based fault diagnosis system for SPWM inverter fed induction motor drive Development of Mobile refrigeration system Development of chopper based voltage regulator for PV module Co-curricular Activities Arnab Sen and Mayukh Bose presented a model of "Tesla Coil" in Eastern India Science & Engineering Fair-2011, organized by Birla Industrial & Technological Museum in 2011 Arnab Sen participated in TECHNEX ’ 11 (ROBOOPUS), organized by ITBHU in 2011 Gopinath Dutta, Debasish Das, Moumita Dey, Nidhi Prasad, and Rimi Sneha participated in INSTRUO-2011, organized by BESU Arnab Sen and Dibyendu Barman participated in SRIJAN-2011 (2nd Prize in Projectile and 2nd in Robo-Olympus), organized by J.U. in 2011 Students of EE Dept. participated in CIRCUITRIX, ROBOTRIX, IDEAS, MODEL Presentation events in PRAYUKTI-2011, organized by the Institute. Moumita Dey, Debjit Chatterji, Lokejit Sarkar, and Poulomi Chatterjee won 1st Prize in INSTRU O-2013 (ROBOTRECK), organized by BESU Shibpur in 2013. Moumita Dey, Debjit Chatterji, Lokejit Sarkar, Poulomi Chatterjee, Saptarshi Biswas, Bibhas Mondal, Soumen Mondal, and Soumen Pariyar participated in INSTRUO-2013 (ROBOSCOCCER), organized by BESU Shibpur in 2013 Sagnik Basu Mallik won 1st Prize in PAPER PRESENTATION organized by Jadavpur University in 2013: paper title "Microbial Fuel Cells" Sagnik Basu Mallik, Sajal Kr. Sarkar, and Soumitra Kundu . participated in ROBOTICS organized by Jadavpur University in 2012 Sagnik Basu Mallikof won 3rd Prize in PAPER PRESENTATION organized by IIT Delhi in 2013; Title of the paper" "Analysis of Variations in Measured Recovery Voltage Peak Due to Presence of Moisture in Insulation in Power Transformer" Soumitra Kundu of EE Dept. won 4th Prize in Robotics competition organized by IIT-Khargapur in 2013 Sagnik Basu Mallik and Akansha participated in paper presentation organized by IIT- Delhi, 2013; Title of the paper: "Study of Behavioral Science and Psychology of Robot that is Able to Interact Intelligently to Its Dynamic Ambience ". 6 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Extra-Curricular Activities Electrical Engineering Department was awarded the Best Sports Department of The Year 2013, 2011. The Department received 2nd prize in March Past event in Annual Sports meet 2013 Priyanka Tudu was adjudged Best Sports Person of the Year (Women) 2013. Vivekananda Bala was adjudge Best Sports Person of the Year (Men) 2013, 2012, 2011 Vivekananda Bala participated in All India Inter University Athletic Meet, 2013 Priyanka Tudu participated in All India Inter University Athletic Meet, 2013 Priyanka Tudu won 1st prizes in Javelin throw and Shot Put events in Annual Sports meet 2013 Vivekananda Bala won 1st prizes in 100m run, 400m run, Long Jump, High Jump and Javelin throw events in Annual Sports meet 2013 The Department received 1st prize in March Past event in Annual Sports meet 2012 Priyanka Tudu won 1st and 3rd prizes in Javelin throw and Shot Put events in University level sports meet 2012 Priyanka Tudu won 1st and 2nd prizes in Shot Put and Javelin throw events in Annual sports meet 2012 Rupam Bera, Debasis Das, Shankar Roy and Vivekananda Bala won 2nd prize in 4x100m relay race in Annual sports meet 2012 Ravi Ranjan won 3rd prize in Long jump event in Annual sports meet 2012 S.K. Amirul Hasan won 1st prize in javelin throw event in Annual sports meet 2012 Moumita Dey won 3rd prize in javelin throw event in Annual sports meet 2012 Tamal Das, Ravi Ranjan were members of the Zonal Champion football team 2012 Vivekananda Bala won 1st prize in 100m run, 1st prize in long jump, 2nd prize in 4x100m relay race events in events in University level sports meet 2012 Vivekananda Bala 3rd prize in high jump, 2nd prize in javelin throw events in Annual sports meet 2012 Vivekananda Bala won 1st prizes in 200m run, 800 m run and long jump events in Annual sports meet 2011 Arindam Majhi was member of the Champion basketball team in 2011 Sayan Saha was champion in Badminton (doubles) tournament in 2011 7 News Bulletin Department of ELECTRICAL Engineering Introduction Faculty Achievements Major Research Areas Research Team Prof. P. Purkait, S. Das Prof. P. Purkait, S. Das, G. Das Prof. P. Purkait, S. Das, S. Sarkar Prof. P. Purkait, S. Das, I. Bandyopadhyay Prof. P. Purkait, S. K. Ojha Area of Research Stator winding fault diagnosis of induction motors Rotor fault diagnosis of induction motors Stator winding incipient fault diagnosis in induction motor Condition monitoring of SPWM Inverter fed induction motor drives Transformer insulation condition monitoring Important Research Publications [1] [2] [3] [4] [5] [6] [7] [8] S.Das, P.Purkait, D. Dey, and S. Chakravorti, “Monitoring of Inter-Turn Insulation Failure in Induction Motor using Advanced Signal and Data Processing Tools”, IEEE Transaction on Dielectrics and Electrical Insulation, Volume 18, Issue 5, pp. 1599 – 1608, (ISSN: 1070-9878), Oct, 2011 S. Das, C. Koley, P. Purkait, and S. Chakravorti, “Performance of a Load-Immune Classifier for Robust Identification of Minor Faults in Induction Motor Stator Winding”, IEEE Transaction on Dielectrics and Electrical Insulation , 2013 Santanu Das, P. Purkait, S. Dutta, N. Das, S.Saha, “Classification of Induction Motor Stator Winding Inter-turns Faults with Image Processing Tool”, in Proc. CALCON11, Organized by IEEE Calcutta Section in collaboration with Circuits and Systems Chapter, pp.128-133, 4-5 Nov, 2011. D. Mukherjee, G. Das, and P. Purkait, “Effects of External Disturbances on MCSA of Three Phase Induction Motor”, in Proc. CALCON11, Organized by IEEE Calcutta Section in collaboration with Circuits and Systems Chapter, pp.140-145, 4-5 Nov, 2011. I. Bandyopadhyay, S. Das, P. Purkait, “Developing a Rule Base for using Current Concordia Patterns to Identify Faulty IGBT in Induction Motor PWM Drives”, in Proc. CALCON11, Organized by IEEE Calcutta Section in collaboration with Circuits and Systems Chapter, pp. 134139, 4-5 Nov, 2011. Santanu Das, P. Purkait, G. Das, “Case Studies on Off-Line Condition Monitoring of Induction Motors in a Large Material Handling Plant”, in Proc. CALCON11, Organized by IEEE Calcutta Section in collaboration with Circuits and Systems Chapter, pp. 146-151, 4-5 Nov, 2011 S. Das, P. Purkait, and S. Chakravorti, “Relating Stator Current Concordia Patterns to Induction Motor Operational Abnormalities”, in Proc. IEEE. TENCON, Sponsored by IEEE Region 10 & Organized by IEEE, Bali, Indonesia, pp. 933 – 937, 21-24 Nov, 2011 S. K. Ojha, P. Purkait, B. Chatterjee, S. Chakravorti, “An attempt to identify voltage related nonlinearities of transformer insulation from dielectric response measurements”, in Proc. TENCON 2011 - 2011 IEEE Region 10 Conference, Bali, Indonesia, 2011, pp. 848 – 852. 8 News Bulletin [9] [10] [11] [12] [13] 1 Department of ELECTRICAL Chapter Engineering S. Das, P. Purkait, and S. Chakravorti, “Separating Induction Motor Current Signature for Stator Winding Faults from that due to Supply Voltage Unbalances”, in Proc. IEEE International Conference on Power and Energy (ICPEN), NERIST, Arunachal Pradesh, India, pp. 1-6, 28-29 Dec, 2012 Shubhasish Sarkar, Santanu Das, Prithwiraj Purkait and Sivaji Chakravorti, “Application of Wavelet Transform to Discriminate Induction Motor Stator Winding Short Circuit Faults from Incipient Insulation Failures”, in Proc. IEEE International Conference on Power and Energy (ICPEN), NERIST, Arunachal Pradesh, India, pp. 1-6, pp. 7-12, 28-29 Dec, 2012 I. Bandyopadhyay, S.Das, P.Purkait, and C. Koley, “Using Mean Current Vector to Develop a Rule Base for Identification of IGBT Faults in Induction Motor Drives”, in Proc. IEEE International Conference on Power and Energy (ICPEN), NERIST, Arunachal Pradesh, India, pp. 1-6, 28-29 Dec, 2012 G. Das, D. Mukherjee, S. Das, and P. Purkait, “Influence of Rotor Faults on Induction Motor Stator Current Concordia Patterns”, in Proc. IEEE International Conference on Power and Energy (ICPEN), NERIST, Arunachal Pradesh, India, pp. 1-6, 28-29 Dec, 2012 S. K. Ojha, P. Purkait, and S. Chakraborti, “Understanding the effects of moisture equilibrium process on dielectric response measurements for transformer oil-paper insulation systems”, in Proc. IEEE ICPEN, Nirjuli, pp. 1-6, 2012. PhD Thesis Completed / Ongoing Topic / Title Stator winding fault identification in induction motor using novel signal processing methodologies Condition monitoring of SPWM Inverter fed induction motor drives (Ongoing) Rotor fault diagnosis of induction motors (Ongoing) Stator winding incipient fault diagnosis in induction motor (Ongoing) Transformer insulation condition monitoring (Ongoing) University / Institute Jadavpur University NIT, Durgapur PhD Researcher Guide S. Das (Completed in Nov 2013) I. Bandyopadhyay (Ongoing) Prof. S. Chakravorti & Prof. P. Purkait Prof. P. Purkait, S.Das, C. Koley (NIT-Dgp) Prof. P. Purkait & S.Das Prof. P. Purkait & S.Das Jadavpur University Jadavpur University G. Das (Ongoing) Jadavpur University S.K. Ojha (Ongoing) S. Sarkar (Ongoing) Prof. S.Chakravorti & Prof. P. Purkait Books / Articles / Chapters Published Author P. Purkait, S. Das, B. Biswas P. Purkait, B. Biswas P. Purkait, U. Mondal Book Title Electrical and Electronics Measurements and Instrumentation Electrical and Electronic Measurements and Instrumentation Control Systems Publisher Name McGrawHill Education McGrawHill Education McGrawHill Education Year 2013 2010 2009 9 News Bulletin Department of ELECTRICAL Engineering Introduction Departmental Achievements Major R & D projects Topic Development of Dielectric Diagnostic Equipment for Condition Monitoring and life estimation of Transformers Implementation of Advanced Techniques for Condition Monitoring and Life Estimation of Large Electrical Equipments Amount / Funding Authority 9.46 Lacs, UGC, Govt. of India Year 2008-2011 10.5 lacs, AICTE, Govt. of India 2008-2011 Application of Advanced Dielectric Testing Techniques for Interpretation of Polarization Phenomena in Moisture Estimation and Prediction of Useful Remaining Life of Composite Insulation 20 lacs, DST, Govt. of India 2009-2012 Application of Advanced Diagnostic Tools for Comprehensive Condition Monitoring and Life Prediction of Electric Motors 38 lacs, DST, Govt. of India 2010-2013 Application of Advanced Diagnostic Tools for Comprehensive Condition Monitoring and Life Prediction of Electric Motors 7.69 lacs, DST, Govt. of India 2012-2015 Industrial Consultancy Projects Topic Condition Monitoring of HT Motors Training Course on Industrial Drives Training Course on Industrial Drives Training Course on Electrical engineering Organization / Company Haldia Dock Complex HPL, Haldia Electro Steel Casting Ltd., Haldia IOCL, Haldia Year 2008-09 2007 2008 2008 10 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Seminars / Conferences/ Workshops/ Training courses organized Title MATLAB Workshop – HIT, Haldia, 2006-13 PSPICE Workshop – HIT, Haldia, 2006-13 PLC training program- HDC, Haldia, 2006 Microcontroller Workshop Workshop on LABVIEW Workshop on ETAP Workshop on maintenance of laboratory grade power supplies Workshop on faculty development (Mission 10X) Robotics Workshop, 2010-13 Aero-modelling Workshop, 2013 National Seminar “Power Sector Restructuring & Deregulation (PSRD) 2005” , With network partners University College of Technology, Kolkata & Govt. College of Engg. & Ceramic Technology, Kolkata National Conference on “Advancements in Condition Monitoring Techniques of Large Electrical Equipments”, 2005 Power System, Power electronics and Drives Simulation Software, 2006 LabView and the world of virtual instrumentation, 2007 Funding Authority IEEE HIT Student Branch , IEEE KGP section IEEE HIT Student Branch , IEEE KGP section HDC, Haldia IEEE HIT Student Branch , IEEE KGP section TEQIP Trident Techlabs - Kolkata Mother Electric Works, Kolkata WIPRO Technologies IEEE HIT Student Branch , IEEE KGP section IEEE HIT Student Branch , IEEE KGP section Technical Education Quality Improvement Program (TEQIP) IOCL, CESE, Alstom, DVC Trident Techlabs Pvt. Ltd. National Instruments, Bangalore, Trident Techlabs Pvt. Ltd., Kolkata 11 News Bulletin Department of ELECTRICAL Engineering Introduction Invited Lectures Organized Title / Topic Preparation for Interviews - July 2011 Gas - Insulated transmission Line-Aug, 2008 How a Common People Can Access Information from Internet? 2009 Introduction to Control Systems, 2009 MEMS & Microsystems, 2009 Life is a Challenge beyond books – Accept it, 2008 Resource person details Dr. D. D. Sood, SMIEEE, Delhi Section (NDLP) Dr. Sivaji Chakravorti Professor, Jadavpur University Prof. D. Samanta, IIT Kharagpur Prof. S. K. Das, EE Dept, IIT Kharagpur Prof. T. K. Bhattacharya, EE Dept, IIT Kharagpur Ashoke Chaudhuri, Manager PGPEX, IIM Calcutta Invited Lectures Delivered Faculty Dr. S. Das Prof. P. Purkait Prof. P. Purkait Topic PLC Programming Condition Monitoring and Life Prediction of Power Transformers Condition Monitoring of Induction Motors Prof. P. Purkait Wavelet Transforms Prof. P. Purkait Electromagnetic Transient Program (EMTP) Prof. P. Purkait Moisture Diagnostics in Electrical Equipments using Dielectric Response Analysis Wavelet Transforms and their Applications in Electrical Engineering Advanced Techniques for Condition Monitoring and Life Prediction of Power Transformers Prof. P. Purkait Prof. P. Purkait Event / Organization HDC-Haldia IEEE Event, NIT Durgapur University Of Calcutta, IEEE PES Calcutta Chapter, IET-UK Kolkata Local Network IEEE Student Branch, CIEM Kolkata Power Engineering Chapter IEEE Calcutta Section, Jadavpur University, TEQIP Crompton Greaves Ltd., Mumbai IEEE PES Chapter, IEEE Calcutta Section & Jadavpur University IEEE PES Chapter, IEEE Calcutta Section & West Bengal State Electricity Board 12 News Bulletin 1 Department of ELECTRICAL Chapter Engineering Technical Corner Setting up Innovative Condition Based Maintenance (CBM) Strategies for Stator Winding Fault Detection in Induction Motors Still an emerging area of research Dr. Santanu Das, Associate Prof. & Head Induction motors play one of the most crucial roles in industrial installations mainly due to their appealing features such as, ruggedness, reasonably small size, easy availability, ability to work under harsh working environments, and cost effective design of squirrel-cage rotor. In spite of their relatively high reliability, induction motors when subjected to undesirable stresses during their service conditions may develop internal faults. Faults in induction motors can occur in any of the three major components of the motor: stator, rotor or bearings. Survey carried out by the General Electric Company, was reported in an EPRI (Electric Power Research Institute) publication and covered about 5000 motors, approximately 97% of which were three phase cage induction motors.. In Figure 1, the occurrence of the individual faults in induction motor is presented based on the statistical study by EPRI. Other Stator winding faults mostly originate from 14% damage or degradation of winding insulation. Rotor Related Bearing Related 9% Mainly three types of insulations are used in a 41% motor: groundwall, turn, and strand. The groundwall insulation is the strongest of the three, since it has to withstand voltages which exceed the Winding Related rated voltage of the motor. The turn insulation is 36% much thinner than the groundwall insulation, and is typically subjected to between 10 and 100 volts ac. Strand insulation, in some motors, is applied heavily and also serves as turn insulation. The insulation which is most likely to fail is the turn insulation, because it is thin yet must withstand voltage spikes, long term aging, thermal cycling, and mechanical vibration. A significant number of research works have indicated that majority of motor stator winding failures result from damage of the turn insulation. Deterioration of the winding insulation usually begins as an inter-turn fault involving a few turns of the winding. The lead time of stator winding fault, which is the time interval between the fault inception instant and the instant of complete failure of the machine depends upon several factors, such as, initial number of turns involved in insulation failure, power rating, voltage rating and environmental condition etc. Lead time of stator winding fault is much shorter than that of other faults such as, rotor faults and magnetic circuit faults for instance. If the fault is detected at an early stage, the machine can be put back into service by just re-winding the stator, while, on the other hand, replacing the whole motor means increased downtime. Quite a few off-line and on-line techniques are available to detect and diagnose stator winding faults for line fed low voltage induction motors. Non-intrusive methods which only use voltage and current measurements from motor terminals and do not require additional sensors, are always preferred in this regard. Motor current signature analysis (MCSA) which is a completely noninvasive method for fault diagnosis has proven to be an efficient technique for stator winding fault identification . Analysis of axial flux, vibration monitoring, Extended Park’s Vector Approach (EPVA), detection of negative sequence current, negative sequence impedance residual saturation harmonics and multiple reference frame theory are among the extensively referred stator winding fault detection techniques in literature published recently. Signal processing tools such as Fast Fourier Transform (FFT), Short-time Fourier Transform (STFT), Wavelet transform (WT) and Power Spectral Density (PSD) estimation have been introduced to extract fault related information from the stator current signals. For continuous and trouble free operation, induction motors now-a-days demand the use of condition based maintenance (CBM) strategies in parallel with traditional scheduled and preventive maintenance approaches. In this era of competitive market and deregulation, it has become more pertinent that scheduled maintenance and routine monitoring give way to condition based maintenance and efficient fault diagnosis. Early detection of up-coming abnormalities in motor can considerably minimize the possibilities of unexpected failure and downtime. Successful implementation of such schemes can save unwanted shutdown of expensive manufacturing processes employing such induction motors. The recent trend is towards developing effective stator winding fault detection methods which should be insensitive to unbalance in supply voltage, intrinsic asymmetry in the motor and load level variations. Because, unbalanced supply voltage to a motor may produce current signatures which look apparently identical to stator winding interturn fault cases and can possibly put challenge to the fault detection schemes. In such situations, the fault detection problem becomes even stiffer if fault identification is required under varying operating load levels of the motor. 13 News Bulletin Applied Electronics and Instrumentation Engineering Introduction Student Intake : 60 per Academic Session Intake Quality : Top 15% of WB Joint Entrance Exam Faculty Profiles Name of the Faculty Designation Qualification Mr. Debadutta Ghosh Prof. S. Mitra Associate Prof. & HOD Professor M. Tech., B. Tech., B. Sc. (Physics) M. Tech., B. Tech. Dr. Debasis Mondal Associate Prof. Mr. Manas Bera Mr. Uday Maji Mrs. Madhumita Das Mr. Asim Halder Mr. Priyonko Das Mrs. Moumita Sahoo Mr. Rohon Mondal Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. PhD, M. E., B. Tech. ,B. Sc. (Physics) M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. E. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. Experience 8 yr industry 12 yrs teaching 28 yr industry 8 yr teaching 6 yr industry 8 yr teaching 7 yr teaching 6 yr teaching 5 yr teaching 5 yr teaching 4 yr teaching 4 yr teaching 2 yr teaching Major Laboratories Sensor and Transducer Lab Industrial Instrumentation Lab Remote control and Telemetry Lab Circuit Theory and Networks Lab Analog Electronics Lab Process Control lab 14 News Bulletin 1 Applied Electronics and Instrumentation Chapter Engineering Student Achievements University Positions 7% above 9 DGPA, 64% above 8 DGPA Higher Studies 08 number of students have qualified GATE examination in 2010 05 number of students have qualified GATE examination in 2011 02 number of students have qualified CAT examination in 2011 03 number of students have qualified GRE o 01 UK in the year 2011 [ Maitrayee Dey, University of Sussex] o 01 USA in the year 2012 [ Subit Chakraborty, University of Florida] 10 number of students have got admission for M. Tech/MEE in IIT 20 number of students have got admission for M. Tech/MEE in NIT 15 number of students have got admission for M. Tech/MEE in Jadavpur University (JU) 05 number of students have got admission for M. Tech/MEE in Bengal Engineering and Science University (BESU) Students’ placements Public Sector organizations (Both Central and State) Private organizations NTPC,BARC,SAIL, IOC, NALCO, SAIL Core Sector TCL, DCPL, TVS, L&T, HPL, Renuka Suger,Ruchi Soya, Jindal, Monet, Daniel, Himadri, TATA STEEL Software (IT Sector) CTS, TCS, WIPRO, Infosys, HP, IFB,BCS, EXLinfo, Mac & Cay Softwebs Industrial Training: DCPL, TVS, L&T, HPL, Renuka Suger, Ruchi Soya, PDCL, DPL, HDC, NTPC. 15 News Bulletin Applied Electronics and Instrumentation Engineering Introduction Student Project Quality [Leading to publications / Product development/ Internal resource development] Double Set point Temperature Indicator Controller Ultrasonic Flaw Detector or underground Cable Fault Locator Design of a resistance contact type level measurement sensor Design of a PID controller and its tuning applying Z-N method Measurement of density Design of single input DAS card and interfacing with PC to measure and indicate temperature Speed check to detect rash driving on highway Density based traffic signal system Humidity measurement Password protected door control Design and Implementation of a (Heat/IR) Sensor-based Hand-held Surface Temperature Mapping System – Hardware and Software Extra-Curricular Activities Students Organised ALUMNI meet every year Students participate the college tournaments like Football, Cricket, Volley ball etc. Participation in National Level Tech Fest/ Tech-Quiz Competition. Faculty Achievements Major Research Areas Research Team Dr. Debasis Mondal Area of Research Power System Stability, Non Linear Control System, Soft Computation Technique, Robust Control Important Research Publications [1] [2] [3] [4] [5] D. Mondal, A. Chakrabarti and A. Sengupta, “Optimal placement and parameter setting of SVC and TCSC using PSO to mitigate small signal stability problem,” International Journal of Electric Power and Energy System, vol. 42, no. 1, pp. 334-340, April 2012, www.elsevier.com (Impact factor: 2.247), ISSN: 0142-0615. D. Mondal, A.Chakrabarti and A.Sengupta, “Investigation of small signal stability performance of a multimachine power system employing PSO based TCSC controller,” Journal of Electrical Systems, vol. 8 , no. 1, pp. 23-34, March 2012, www.journals.esrgroups.org. (Impact factor: 0.9239), ISSN: 1112-5209. D. Mondal, A. Sengupta and A. Chakrabarti, “Robust control of inter-area oscillations in a multimachine network employing LMI based wide area TCSC controller,” Electrical and Electronic Engineering, vol. 2, no. 2, pp. 23-30, April 2012, www.journal.sapub.org. ISSN: 2162-9455/8459. D. Mondal, A. Chakrabarti and A. Sengupta, “Small signal stability assessment employing PSO based TCSC controller with comparison to GA based design,” World Academy of Science Engineering and Technology, Issue 56, no. 281, pp 1594-1601, August 2011, www.waset.org. (Impact factor: 1.0). D. Mondal, A. Chakrabarti and A. Sengupta, “Small signal stability improvement and congestion management using PSO based TCSC controller,” International Journal on Recent Trends in 16 News Bulletin [6] [7] [8] [9] [10] [11] 1 Applied Electronics and Instrumentation Chapter Engineering Engineering & Technology, ACEEE, India, vol. 5, no. 2, pp.38-43, Mar 2011. (Impact factor: 1.0), ISSN: 2158-5563/5555. D. Mondal, A. Chakrabarti and A. Sengupta, “A unique method for selection of optimum location of Power System Stabilizer to mitigate small-signal stability problem,” The Institution of Engineers (India), Journal-EL, vol. 91, pt: EL(2), pp. 14-20, Sept. 2010. ISSN: 0020-3386. D. Mondal, A. Chakrabarti and A. Sengupta, “Optimal tuning of PSS and TCSC controllers in a multimachine power systems using PSO algorithm,” International Journal of Engineering Research and Industrial Applications, vol. 3, no. III, pp. 259-276, Aug. 2010, www.ascent-journals.com. (Impact factor: 0.1526), ISSN: 0974-1518. D. Mondal, A. Chakrabarti and A. Sengupta, “Selection of optimum location of power system stabilizer in a multimachine power system,” Journal of Electrical and Electronics Engineering Research, vol. 2, no. 1, pp. 1-13, Feb. 2010. www.academicjournals.org., ISSN: 2141-2367. D. Mondal, A. Sengupta and A. Chakrabarti, “Intelligent Control of Inter-area Oscillations in a Multimachine Network Employing LMI Based Wide Area TCSC Controller,” Iranian Journal of Electrical and Computer Engineering (IJECE), vol.11, no.1, pp. 35-42, WINTER-SPRING 2012. (Impact factor: 0.8045), ISSN: 1682-0053. S. Mondal, U. Maji, “Basic test identification using voltametric electronic tongue technique,” IJSCS, vol-I, issue-4, pp-49-52. U. Maji, M. Mitra, S. Pal, “Automatic Detection of Atrial Fibrillation using Empirical Mode Decomposition and Statistical Approach”, accepted in CIMTA 2013, Kalyani University, to be published in Procedia Technology (Elsevier). PhD Thesis Completed / Ongoing Topic / Title Small signal Stability improvement using FACTS controller in longitudinal power system University / Institute BESU PhD Researcher Debasish Mondal Guide Prof. A. Chakraborty & Dr. A. Sengupta Books / Articles / Chapters Published Author Dr. Debasish Mondal, Prof. Abhijit Chkrabarti and Dr. Aparajita Sengupta. Book Title Power System Small Signal Stability Analysis and Control Publisher Name Elsevier S & T Book division. Year In Press (2013) Departmental Achievements Industrial Consultancy Projects Topic Condition Monitoring of HT Motors Organization / Company Haldia Dock Complex Year 2008-09 17 News Bulletin Applied Electronics and Instrumentation Engineering Introduction Technical Corner Detection of Cardiac Abnormalities from Various Rhythmic Disorders using Pattern Recognition Methods Uday Maji, Assistant Prof. ECG is one of the most important physiological signals that is studied, analyzed and used for diagnosis purposes. It is commented by WHO (World Health Organization) that cardiac diseases are the prime cause of death in the world and the probability of death due to heart related reason will be increased in future. The problem is more intensive in the third world countries like India because of the scarcity of medical persons, monitoring systems, medical centers and lack of proper communication and transport systems for the patients. General awareness regarding the cardiac complexities and related treatments is also very poor in these areas. In this scenario an assistive technology for basic diagnosis of cardiac abnormalities may help the medical persons to detect the irregularity easily at the earliest. Moreover, a computerized automatic continuous monitoring system can help in intensive cardiac care units (ICCU) by reducing the time required for interpretation as well as human effort. Cardiac impulse is generated in Sino-atrial (SA) node and it spreads to the atrioventicular (AV) node and then down to the ventricles through the Bundle of His. The normal Electrocardiogram signal thus generated is mainly characterized by few fiducial points as P, Q, R, S and T. The conduction of this pulse can be delayed or blocked at any point during this passage which results in abnormalities in the rhythm. Abnormal rhythm may appear at the atrial muscle, junction region or the ventricular muscle. This causes different type cardiac abnormality. Abnormality related to atria is called atrial arrhythmia. Atrial arrhythmia may be Premature Atrial Contractions (PAC), Wandering Atrial Pacemaker, Multifocal atrial tachycardia, Atrial Flutter (AFL) and Atrial Fibrillation (AF). Abnormalities related to ventricle are Right Bundle Branch (RBB), Left Bundle Branch (LBB), Ventricular Flutter, and Ventricular Tachycardia. Various methodologies have been used for the automatic detection of heart diseases and various types of beats. Most of the works that have been done on cardiac abnormalities are based on the ECG data obtained from standard database. ECG signal is non-stationary, quasi periodic signal. Our target is to develop full proof and robust algorithm based on non-stationary signal analysis techniques which can work on different type rhythmic disorders. Intelligent classification system based on neuro-computing techniques can be used to decision making required for disease identification. Moreover, the technique can be applied to other signals related to cardiology like PPG etc. 18 News Bulletin 1 Department of Instrumentation & Control Chapter Engineering Student Intake : 60 per Academic Session Intake Quality : Top 15% of WB Joint Entrance Exam Faculty Profiles Name of the Faculty Dr. Dilip Kumar Dey Designation Associate Prof. & HOD Qualification PhD, M. Tech., B. Tech., B. Sc. (Physics) Mr. Saorabh Kumar Mondal Mrs. Sweta Bijali Mr. Manas Sarkar Dr. Biswajit Kar Mr. Sudipta Bardhan Mrs. Priyanka Rakshit Ms. Sangeeta Jana Mr. Manas Sarkar Assistant Prof. M. Tech., B. Tech. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. Assistant Prof. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. M. Tech., B. Tech. Experience 8 yr industry 4 yrs research 13 yrs teaching 1 yr industry 5 yr teaching 5 yr teaching 4 yrs teaching 4 yrs teaching 4 yrs teaching 4 yrs teaching 4 yrs teaching 3 yrs teaching Major Laboratories Electronic Measurement and Instrumentation Lab Control System Lab Process Control Lab Logic and Distributed Control System Lab 19 News Bulletin Department of Instrumentation & Control Engineering Introduction Student Achievements University Positions 5% above 9 DGPA, 61% above 8 DGPA Higher Studies 14 number of students have qualified GATE examination (2010 -2011) 3 number of students have qualified CAT/MAT examination (2011) 6 students have qualified GRE o Aniket Mukherjee (2011) admitted for Masters in Electrical Engineering in Pansilia University, USA 6 number of students have got admission for M. Tech/ME in NITs 7 number of students have got admission for M. Tech/MEE in Jadavpur University (JU) 5 number of students have got admission for M. Tech/MEE in Bengal Engineering and Science University (BESU) Students’ placements Public Sector organizations (Both Central and State) Private organizations NTPC, BARC,S AIL, IOC, NALCO Core Sector TCL, DCPL, TVS, L&T, HPL, Renuka Suger,Ruchi Soya, Jindal, Monet, Daniel, Himadri, TATA STEEL. Software (IT Sector) CTS, TCS, WIPRO, Infosys, HP, IFB,BCS, EXL-info, Mac & Cay Softwebs Industrial Training: DCPL, TVS, L&T, HPL, Renuka Suger, Ruchi Soya, PDCL, DPL, HDC, NTPC etc. Student Project Quality [Leading to publications / Product development/ Internal resource development] Temperature Control in water bath using Fuzzy Control Logic Development of an embedded auto-tuning PID controller for coupled-tanks system Design of a versatile fluid level detector Design of Seismic Sensors Establishment of an optical communication link both by hardware and simulation Microprocessor based temperature measurement and control. Microprocessor based level indicator controller. Detection of obstacle and motion control 20 News Bulletin 1 Department of Instrumentation & Control Chapter Engineering Multipoint temperature control using Single controller Biomedical signal processing and analysis Design of a cost-effective phone-cardiograph (heart sound measuring device) Micro-controller based measurement and control of flow. Wireless ECG signal transmission Ultrasonic Proximity Detector Design of drinking water alarm Co-curricular Activities Saurabh Chakraborty, Shashank Shawak ,Rahul Mahato and Akash Deep won first prize in robotics championship at IIT Khargarpur in 2012. Saurabh Chakraborty, Shashank Shawak , Rahul Mahato and Akash Deep presented a paper “Survival below earth Surface” at IIT Delhi in 2012. Extra-curricular Activities Swarup Nayak (2011-15): Represent as a Jr. Cricket player in the Bengal team. Students organise ALUMNI meet every year. Participate in college tournaments like Football, Cricket, Volley ball etc. Participation in National Level Tech Fest/ Tech-Quiz Competition. Departmental Achievements Industrial Consultancy Projects Topic Condition Monitoring of HT Motors Organization / Company Haldia Dock Complex Year 2008-09 Faculty Achievements Major Research Areas Research Team Lead Dr. Dilip Dey Area of Research Fault diagnosis of induction motor by AI techniques Important Research Publications [1] [2] Sudipta Bardhan, H. Rahaman, “Modelling and Performance Analysis of Graphene Field Effect Transistor” Asian Journal of Chemistry, vol-25, 2013. S. Mondal, U. Maji, “Basic test identification using voltametric electronic tongue technique,” IJSCS, vol-I, issue-4, pp-49-52, 2011. 21 News Bulletin Department of Instrumentation & Control Engineering Introduction [3] [4] [5] [6] [7] [8] [9] [10] [11] Biswajit Kar and Pranab K Dutta, “SVM based Signature Verification by Fusing Global and Functional Features”, International Journal of Computer Applications 60(16):34-39, December 2012. Published by Foundation of Computer Science, New York, USA. Dilip Dey, P. B. Duttagupta, S. Sengupta, “Online condition monitoring of Induction Motor through WPD Technique,” International Journal of Applied Engineering Research (IJAER) Volume 5, Number 3 , pp. 449—464, March 2010. Srijan Bhattacharya, Neeta Sahay, Sagarika Pal, Subrata Chattopadhyay, “Dynamic Modeling of Step Climbing Wheeled Robot”, International Sensor Frequency Association Publishing (IFSA). Sensors & Transducers Journal, Vol. 119, Issue 8, August 2010, pp. 193-206. Srijan Bhattacharya, Sagarika Pal, Subrata Chattopadhyay, “Design and Development of a Step Climbing Wheeled Robot”, Sensors & Transducers Journal, Vol. 107, Issue 8, August 2009, pp. 133-143. Srijan Bhattacharya, Sagarika Pal, Subrata Chattopadhyay, "Control Scheme of a Designed Step Climbing Wheeled Robot", International Sensor Frequency Association Publishing (IFSA). Sensors & Transducers Journal, Vol. 109, Issue 10, October 2009, pp. 70-75. Dilip Dey, P. B. Duttagupta, S. Sengupta, “Induction Motor Faults Diagnosis Using Fractal Techniques”, International Journal of Electronic and Electrical Engineering, Volume 1, Issue 1, 2009. Dilip Dey, P. B. Duttagupta, S. Sengupta, “Mechanical Fault Diagnostics For Electromechanical Devices Using ANFIS” International Journal of Applied Engineering Research (IJAER) Volume 4, Number 8, pp. 1489—1498, August 2009. Dilip Dey, P. B. Duttagupta, S. Sengupta “Hybrid AI technique Based Fault Diagnosis of Induction Motor,” International Journal of Electronic and Electrical Engineering (IJEEE) Volume 2, Issue 3 , pp. 81—94 sep, 2009. Dilip Dey, P. B. Duttagupta, S. Sengupta, “Induction motor fault diagnosis using adaptive network based fuzzy inference system”, International Journal HIT Transaction on ECCN, vol.3, no.9, pp. 8 -13, March 2009. PhD Thesis Completed Topic / Title An Investigation into fault diagnosis of Induction motor by AI technique Verification and Cultural Domain Classification of Signature University / Institute University of Calcutta IIT Kharagpur PhD Researcher Dilip Kumar Dey Biswajit Kar Guide Prof. Samarjeet Sengupta.& Prof. P. B. Duttagupta Prof. P. K. Dutta Technical Corner CARBON NANOTUBE FIELD EFFECT TRANSISTORS (CNTFETS) Sudipta Bardhan, Assistant Professor INTRODUCTION The miniaturization has always a key role in electronic evolution: at each generation the miniaturization allows to obtain higher speed, lower power dissipation, lower costs, and higher number of gates on chip. Nowadays, the known devices are very smaller, and a further reduction in size would give rise to tunnel effects thus degrading the whole performances. Therefore, the scientific community is looking for a new kind of devices, able to work better at nanometer scale, which is the ultimate limit in miniaturization. BASIC STRUCTURE 22 News Bulletin 1 Department of Instrumentation & Control Chapter Engineering Carbon nanotube field effect transistors (CNTFETs) are a new kind of molecular device. They are field effect transistors, using a CNT as channel and are regarded as an important contending device to replace conventional silicon transistors. As it is known, the CNTs consist in a hexagonal mesh of carbon atoms wrapped in cylinder shapes, some time with closing hemispherical meshes on the tips These tubes could have various radii, lower than two nanometers and since they could be extended also several millimeters, they have a huge length/diameter ratio, making them one-dimensional structures. Depending on the mesh torsion denoted as chirality electronic band structure of CNT changes bandgap may appear making them semiconductors or may not appear making them conductors. Furthermore, the CNT behavior as semiconductor has an energy gap inversely proportional to their radius. COMPACT MODEL DESCRIPTION The model is applicable to a wide range of CNTFETs with diameters varying from 1 to 3 nm and for all chiralities as long as they are semiconducting. The model uses suitable approximations necessary for developing any quasi analytical, circuit-compatible compact model (Fig. 1). The computational procedure to evaluate the drain current ID and the total channel charge QCNT The main quantities used in the model are the surface potential ψS (or control potential) and the specific voltage ξ S(D) that depends on the surface potential, the subbands energy level Δ p and the source (drain) Fermi level µS(D). The conduction band minima for the first subband are set to half the nanotube bandgap Δ1 with Δ1 = 0.45/diam (in eV) . The physical parameter diam is the nanotube diameter (in nm); it is one of the only three intrinsic parameters of our model, with the flatband voltage VFB and the TYP parameter (= +1/−1 for n- or p-type device). Fig.1 CGD gate-drain capacitance, RD drain resistance CGS gate-source capacitance, VFB flatband voltage RS source resistance, ID drain current. 23