REFERENCES [1] Chattopadhyay,s., Maduchannda, and smarit “Electric Power Quality”, Springer Science Business Media, 2011,No .5 , pp.2. [2] Bhattacharyya. S, Myrzik J., Kling W., Cobben S., and van Casteren J, “Harmonic current interaction at a low voltage customer's installation”, International Conference on Electrical Power Quality and Utilization, 2009,pp. 1 - 6. [3] Siahkali, H. “Power quality indexes for continue and discrete disturbances in a distribution area”, IEEE International Power and Energy Conference, 2008, pp .678 – 683. [4] Paolo Piagi, D. , Robert , Lasseter H. “Autonomous Control of Microgrids”, IEEE Power Engineering Society Meeting, 2006, pp. 8-16. [5] Hussein. E, Minne. F, Dresden. J, and Bollen, M. “Hosting Capacity for Motor Starting in Weak Grids”, International Conference on Future Power Systems, 2005, Vol. 6, pp. 1-6. [6] Lasseter, R.H., Paigi, P. “Microgrid: a conceptual solution” IEEE Power Electronics Specialists Conference, 2004, pp .4285 - 4290. [7] Chamana, Manohar, Bayne, Stephen,B. “Modeling, control and power management of inverter interfaced sources in a microgrid”, International Telecommunications Energy Conference ,2011, pp. 1 - 7. [8] Ipakchi, A. “Demand side and distributed resource management”, IEEE Conferences Power and Energy Society General Meeting, 2011,pp .1 – 8. [9] Fang Gao, Iravani, M.R. “A Control Strategy for a Distributed Generation Unit in Grid-Connected and Autonomous Modes of Operation”, IEEE Transactions on Power Delivery, 2008,Vol. 23 , No. 2 , pp. 850 - 859. [10] Ahshan, R., Iqbal, M.T., Mann, G.K.I. and Quaicoe, J.E. “Micro-grid system based on renewable power generation units”, Conference on Electrical and Computer Engineering, 2010, pp. 1 - 4. [11] Rash, A. “Harmonics-what are they, how to measure them and how to solve the problem in connection with standards IEEE 1159-1995 and IEEE 519-1992)” ,Nineteenth Convention of Electrical and Electronics Engineers in Israel, 1996 ,pp. 83 86. 163 [12] Hardi, S. and Daut, I. “Sensitivity of low voltage consumer equipment to voltage sags”, 4th International Power Engineering and Optimization Conference , 2010,pp. 396 – 401. [13] Sang,T. and Chan ,K.M. “Simple fast detector for voltage dip or voltage swell”, IEEE electronic letter,2007,Vol .43 , No.4,pp. 245 - 247. [14] Awad, H. and Blaabjerg, F. “Mitigation of voltage swells by static series compensator”, Annual Power Electronics Specialists Conference, 2004,Vol.5 pp 3505 – 3511. [15] Yanling Huang, Wenxia Sima, and Qing Yang.“A module-based scalable identification system for power system overvoltage events” ,Electric Utility Deregulation and Restructuring and Power Technologies ,2011,pp. 403 - 409. [16] Barker, A. and Ritchie, W.M. “Brownout voltage stability-system measurement and simulation”, International Conference on AC and DC Power Transmission, ,1991, pp .307 - 312. [17] Vlahinic, S., Brnobic, D. and Stojkovic, N. “Indices for Harmonic Distortion Monitoring of Power Distribution Systems”, Instrumentation and Measurement Technology Conference Proceedings, IEEE Publication , 2008 , pp .421 – 425. [18] Marinelli, M. Dell'Aquilla,A.D and Zanchetta, P. “New assessing criteria for the of nonlinear loads to the supply voltage harmonic distortion” , European Conference on Power Electronics and Applications, 2005, pp.8-15. [19] Bahaudin, R.C. Daut, I. Hardi, S. Hashim, N. Nisja, I. Syafruddin, H.S. “Investigation of influence of voltage source type on harmonic characteristics” International Power Engineering and Optimization Conference ,2010, pp. 391 - 395. [20] Hermina, A., Nicolae, G., Aleksander .K and Janusz Brożek. “Frequency Variations” power quality , wiley publication ,2008,Chapter .1. [21] Apuzzo, M. and Arco, M. “Frequency and Amplitude Tracking of Time-Varying Harmonics and Interharmonics in Power Systems” IEEE Instrumentation and Measurement Technology Conference, 2006,pp. 1614 - 1619. [22] Masetti, C. “Revision of European Standard EN 50160 on power quality: Reasons and solutions” International Conference on Harmonics and Quality of Power, 2010 pp 1 - 7. 164 [23] Peng LI, P. “Frequency Regulation Control of a Resilient Microgrid for a Distribution Network” International Journal of Integrated Energy Systems, 2009,Vol.1, No1, pp.1-5. [24] Gil, N.J and Lopes, J.A.P.”Hierarchical Frequency Control Scheme for Islanded Multi-Microgrids Operation” IEEE Conference on power tech, 2007,pp. 473 - 478. [25] Prema Kumar, N. Amarnath, J. Shrivastava, K.D. Singh, B.P. “Identification of winding faults in power transformers by low voltage impulse test and neutral current method using wavelet transform approach” Conference on Electrical Insulation and Dielectric Phenomena, 2005, pp. 140 - 143. [26] Eajal, A.A.and El-Hawary, M.E. “Optimal capacitor placement and sizing in distorted radial distribution systems” International Conference on Harmonics and Quality of Power,2010 , pp .1 - 8. [27] Samaha-Fahmy, M. and Barton, T.H. “Harmonic Effects in Rotating Electric Machines” IEEE Transactions on Power Apparatus and Systems,1974, vol .1 , No. 4 , pp.1173 - 1176. [28] G Wakileh “Harmonics in rotating machines” Electric Power Systems Research,2003, Vol .66, No .1, pp .31-37. [29] Abbas, W. and Saqib, M.A. “Effect of Nonlinear Load Distributions on Total Harmonic Distortion in a Power System” International Conference on Electrical Engineering,2007, pp .1 - 6. [30] Voller, S. Al-Awaad, A.-R. and Verstege, J.F “Wind farms with energy storages integrated at the control power market” Symposium Integration of Wide-Scale Renewable Resources Into the Power Delivery System,2009, pp. 1 - 13. [31] Francis, C,and Dela,R. “Effects of Harmonics on Distribution Systems” CRC press , 2006,Chapter 4. ,pp. 69-84. [32] Molina, M.G. Mercado, P.E. “A new control strategy of variable speed wind turbine generator for three-phase grid-connected applications” IEEE Transmission and Distribution Conference and Exposition,2009,pp.1 - 8. [33] Guru, D. Zhao, P. and Quzhi Yu “Integration of large wind power plants into power system - challenges and solutions” International Conference on Power System Technology,2010, pp 1 -5. [34] Poul .S and Peter, H. “Power Quality and Integration of Wind2000Farms in Weak Grids in India” National Laboratory, Roskilde, 2000 ,pp40. 165 [35] Abo-Khalil, A.G. “Model-based optimal efficiency control of induction generators for wind power systems” IEEE International Conference on Industrial Technology (ICIT) ,2011, pp. 191 - 197. [36] Li, H. and Chen, Z. “Overview of different wind generator systems and their comparisons” IET Renewable Power Generation,2008, Vol .2 , No. 2 , pp .123 - 138. [37] Barambones, O., De La Sent, M. and Alkorta, P. “A robust control of double-feed induction generator for wind power generation Industrial Electronics” Annual Conference of IEEE Industrial electronics,2009 , pp .94 - 99. [38] Thiringer, T. “Grid-Friendly Connecting of Constant-Speed Wind Turbines Using External Resistors Power Engineering” IEEEReview,2002, Vol .22 , No.10 , pp. 57 58. [39] Sandhu, K. S. and Sudhir ,S. “Effects On Major Power Quality Issues Due To Incoming Induction Generators In Power System” Engineering and Applied Sciences,2010 ,vol .5, No. 2, pp.23-29. [40] Teodorescu, R., Blaabjerg, F., Andersen, B., Birk, J.and Miranda, J. “Grid Code Compliance of Grid-Side Converter in Wind Turbine Systems” IEEE Power Electronics Specialists Conference,2006, pp. 1 - 7. [41] Rajveer Mittal, K. Sandhu, S. and Jain D. K. “Grid Voltage Control of Inverter Interfaced Wind Energy Conversion System (WECS)” International Journal of Environmental Science and Development, 2011, Vol. 2, No. 5,pp .337-345. [42] Sandhu, K. S. and Shelly Vadhera, W. “Reactive Power Requirements of Grid Connected Induction Generator in a Weak Grid” Transactions On Circuits And Systems,2008,pp.150-160. [43] Muljadi, E. ,Yildirim, D. ,Batan, T. and Butterfield, C.P. “ Understanding the unbalanced-voltage problem in wind turbine generation”IEEE conferene on Industry Applications , 1999, Vol 2,pp. 1359 - 1365 . [44] Dudurych, I.M., Holly, M.and Power, M. “Wind farms in the Irish Grid: Experience and analysis” IEEE Russia Power Tech ,2005,pp .1 - 7. [45] Trong, C. “Voltage Stability Investigation ofGrid Connected Wind Farm” World Academy of Science, Engineering and Technology , 2008 pp. 532-537. [46] Boulaxis , N.G. , Papathanassiou, S.A. and Papadopouloselsvier M.P. “Wind turbine effect on the voltage profile of distribution networks” Renewable Energy,2002,vol .25, pp. 401–415 . 166 [47] Poul Sørensen, A., Unnikrishnan K., and Sajan A. “Wind farms connected to weak grids in India”,wind energy ,wiley publication ,2002,Vol .4,No. 3, pp.137-149. [48] Ioannis ,D., Margari Anca, D., Nicolaos, A. , and Nikos D. “Impact of wind power in autonomous power systems power fluctuations modeling and control issue”Wind Energy , 2011,Vol .14, No.1, pp .133–153. [49] Roger and Gerrit blom “ Measurement guide for voltage characteristics Union of the Electricity Industry” ELECTRIC,2000, pp.45-51. [50] Sakthivel, K., Das, N. and Kini, K.R. “Electromagnetic Interference and Compatibility” 8th International Conference on INCEMIC,2003, pp. 423 - 430. [51] Courtecuisse, V., Mokadem, M. ,Guillaud, X., Salha, F. and Robyns, B. “Use of real time simulation to validate primary frequency control with wind turbine” IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Centur y,2008, pp. 1 - 8. [52] Medeiros, F. ,Brasil, D.C., Ribeiro, P.F. ,Marques, C.A.G. and Duque, C.A. “A new approach for harmonic summation using the methodology of IEC 61400-21” 14th International Conference on Harmonics and Quality of Power, 2010 , pp .1 - 7. [53] Gunther, E. “Harmonic and Inter harmonic Measurement According to IEEE 519 and IEC 61000-4-7” Transmission and Distribution Conference and Exhibition,2006, pp .223 - 225. [54] Guizhen, T. , Shengtie ,W .and Guangchen, L . “Power quality and transient stability improvement of wind farm with fixed-speed induction generators using a STATCOM” International Conference Power System Technology ,2010,pp. 1 - 6. [55] Behera, R.K. Parida, S.K. Wenzhong Gao “Performance improvement of a wind power distribution station using a dynamic voltage restorer” North American Power Symposium (NAPS) ,2010 , pp1 - 6. [56] Jayanti, N.G. Basu, M. Conlon, M.F.and Gaughan, K. “Rating requirements of the unified power quality conditioner to integrate the fixed speed induction generator-type wind generation to the grid”. IET Renewable Power Generation, 2011, Vol. 3 ,No .2,pp.133 – 143. [57] de Oliveira, A. and Pereira, A. “Introduction of the Mechanically Switched Capacitors (MSCs) application on Power Transmission Systems” Transmission and Distribution Conference and Exposition,2010, pp .452 - 457. 167 [58] Kehrli, A. and Ross, M. “Understanding grid integration issues at wind farms and solutions using voltage source converter FACTS technology” IEEE Power Engineering Society General Meeting, 2003, Vol .3 ,pp.13-17. [59] Blaabjerg, F., Chen, Z. ,Teodorescu, R. and Iov, F. “Power Electronics in Wind Turbine Systems” IEEE conference Power Electronics and Motion Control,2006 ,Vol .1 ,pp. 1 - 11. [60] Wu, H.T.and Liu, Y.H. “Novel STATCOM Control Strategy for Wind Farm Reactive Power Compensation” Power and Energy Engineering Conference 2011, pp .1 - 5. [61] Rezaeipour, R. and Kiani, B. “Review of novel control techniques for STATCOM and its effects on a wind farm Sustainable Power Generation and Supply”. International conference of SUPERGEN ,2009,pp .1 - 5. [62] Sheikh,y., Muyeen, S., Takahashi ,R. and Tamura ,J. “Smoothing control of wind generator output fluctuations byPWM voltage source converter and chopper controlled SMES”European transactions on electrical power,2010,pp.14-19. [63] Takahashi, R. ,Nakatani, M., Tamura, J., Muyeen, S., Sugimasa, M.,Komura, A., Futami, M., Ichinose, M.and Ide, K. “Smoothing control of wind farm output fluctuation by new scheme with energy storage system” European Conference on Power Electronics and Applications ,2011,pp .1 - 9. [64] Papantoniou, A.and Coonick, A. “Fuzzy logic control of a unified power flow controller for wind farm applications Power Electronics for Renewable Energy” IEEE Colloquium,1997 , pp .1-9. [65] Ravishankar, J.and Rahman, M.F. “Dynamic compensators for grid connected wind farms” International Conference on Power Electronics, Drives and Energy Systems ,2010,pp. 1 - 6. [66] Jayanti, N.G., Basu, M., Conlon, M.F. and Gaughan, K. “Rating requirements of the unified power quality conditioner to integrate the fixed speed induction generator-type wind generation to the grid” IET Renewable Power Generation,2009, Vol .3,No.2 , pp .133 – 143. [67] Elizondo, J.L., Macias, M.E., and Micheloud, O.M. “Matrix Converters Applied to Wind Energy Conversion Systems” Technologies and Investigation Trends Electronics, Robotics and Automotive Mechanics Conference,2009, pp .435 - 439. [68] Gyugyi, L. and Pelly, B.R. “Static Power Frequency Changers. Theory, performance and applications,” John Wiley & Sons, 1976, pp.442-445. 168 [69] Wheeler, P.W. ,Rodriguez, J. , Clare, J.C., Empringham, L. and Weinstein, A. “Matrix converters: a technology review’ IEEE Transactions on Industrial Electronics, 2002, Vol .49 , No .2 , pp. 276 - 288. [70] Yang Mei and Lipei Huang “Output Voltage Distortion Compensation for Matrix Converter Fed Induction Motor Driven System” Annual Conference on IEEE Industrial Electronics,2006, pp .2523 – 2528. [71] M. Venturini, “A new sine wave in sine wave out, conversion technique which eliminates reactive elements,” IEEE conference on POWERCON,1980 ,vol.7,pp. 315. [72] Jun-Ichi Itoh, Ikuya Sato, Hideki Ohguchi, Kazuhisa Sato, Akihiro Odaka and Naoya Eguchi “A control method for the matrix converter based on virtual AC/DC/AC conversion using carrier comparison method” Electrical Engineering in Japan, 2005,Vol .152, No.3, pp.65–73. [73] Oyama, J. ,Higuchi, T. ,Yamada, E., Koga, T.and Lipo, T. “New control strategy for matrix converter” Annual IEEE Power Electronics Specialists Conference, 1989, vol.1, pp. 360 – 367. [74] Vadillo, J., Echeverria, J.M,. Fontan, L., Martinez-Iturralde, M.and Elosegui, I “Modeling and simulation of a direct space vector modulated Matrix Converter using different switching strategies” International Symposium on Power Electronics, Electrical Drives, Automation and Motion ,2008 , pp.944 - 949. [75] Holtsmark, N. and Molinas, M. “Reactive power compensation using an indirectly space vector-modulated matrix converter” IEEE International Symposium on Industrial Electronics, 2010 , pp .2455 - 2460. [76] Hongwu She, Hua Lin Bi He, Xingwei Wang, Limin Yue and Xing “An Implementation of Voltage-Based Commutation in Space-Vector-Modulated Matrix Converter” I EEE Transactions on Industrial Electronics, 2011, vol. 59 , No. 1 , pp .154 - 166. [77] Casadei, D. Serra, G. Trentin, A. Zarri, L.and Calvini, M. “Experimental analysis of a matrix converter prototype based on new IGBT modules Industrial Electronics”, Proceedings of the IEEE International Symposium on industrial electronics,2005, Vol. 2 , pp .559 - 564. 169 [78] Kolar, J.W., Friedli, T., Krismer, F. and Round, S.D. “The essence of three-phase AC/AC converter systems’ Power Electronics and Motion Control Conference, 2008, pp .27 – 42. [79] Wheeler, P., Clare, J., Empringham, L., Apap, M. and Bland, M. “Matrix converters” Power Engineering Journal ,2002,Vol.16 , No.6,pp .273 – 282. [80] Wei-hong Liu, Jian-lin Zhu and Li-dan Xiang “Analysis on grid harmonic and stability of grid-connected matrix converter in wind power generation” China International Conference on Electricity Distribution,2008, pp .1 - 7. [81] Berg, G. J.,and Das, P. K. “A New Three-Phase Static Variable Frequency Changer” IEEE Transactions on Industry Applications,1973, Vol. 1, No.5 , pp .607 - 611. [82] Erdem, E. and Sünter, S. “Effects of input filter on stability of matrix converter using venturini modulation algorithm” International Symposium on Power Electronics Electrical Drives Automation and Motion , 2010, pp.1344 - 1349. [83] Lettl, J. “Control design of matrix converter system” International Aegean Conference on Electrical Machines and Power Electronics,2007, pp. 480 - 484. [84] Sangshin Kwak and Taehyung Kim “Design of matrix converter topology and modulation algorithms with shorted and opened failure tolerance” Power Electronics Specialists Conference,2008, pp. 1734 - 1740. [85] Kolar, J.W., Friedli, T., Krismer, F.and Round, S.D. “The essence of three-phase AC/AC converter systems” Power Electronics and Motion Control Conference,2008, pp. 27 - 42. [86] Grant, D and Wheeler, P. “Optimized input filter design and low-loss switching techniques for a practical matrix converter” IEE Proceedings Electric Power Applications,1997, Vol. 144 , No .1 , pp .53 - 60. [87] Hongwu She, Hua Lin, Xingwei Wang, and Limin Yue; “Damped input filter design of matrix converter” International Conference on Power Electronics and Drive Systems,2009, pp. 672 - 677. [88] phamouda, M., Fnaiech, F.and Al-Haddad, K. “Input filter design for SVM DualBridge Matrix Converters” IEEE International Symposium on Industrial Electronics,2006, Vol .2 , pp. 797 - 802. [89] Zhang, H., Wheeler, P.W.and Grant, D.A. “A theoretical and practical consideration of optimised input filter design for a low loss matrix converter” Ninth International Conference on Electromagnetic Compatibility”, pp.138 - 142 ,1994. 170 [90] Wheeler, P.and Grant, D. “Optimized input filter design and low-loss switching techniques for a practical matrix converter” IEE Proceedings Electric Power Applications,1997, Vol .144 , No.1 , pp. 53 - 60. [91] Zargari, N.R., Joos, G.and Ziogas, P.D. “Input filter design for PWM current-source rectifiers” Applied Power Electronics Conference and Exposition,1993, pp .824 - 830. [92] Hongwu She, Hua Lin, Xingwei Wang and Limin Yue “Damped input filter design of matrix converter” International Conference on Power Electronics and Drive systems ,2009, pp .672 – 677. [93] Shuowang,, Rengang, Lee,. “Improved passive filter configuration for high frequency conducted EMI in power electronics" IEEE Transactions on Power Electronics and application, 2005, pp 19 - 25. [94] Nussbaumer, T., Heldwein, M.L. and Kolar, J.W “Common mode EMC input filter design for a three-phase buck-type PWM rectifier system’ IEEE Applied Power Electronics Conference and Exposition ,2006, pp.7. [95] Ferreira Pinto, S. and Fernando Silva, J. “Input filter design for sliding mode controlled matrix converters” IEEE 32nd Annual conference Power Electronics Specialists,2001 , Vol .2 , pp.648 - 653. [96] Wheeler.P,Clare.J and Terntin “Automated optimal design of input filters for direct AC/AC matrix converter” IEEE Transactions on Magnetics, 2006, Vol .49 , No.7 , pp .2811 – 2823. [97] Xiaolin Mao; Ayyanar, R.; Krishnamurthy, H.K “Optimal Variable Switching Frequency Scheme for Reducing Switching Loss in Single-Phase Inverters Based on Time-Domain Ripple Analysis “IEEE Transactions on power electronics, 2009, vol24, no 4, pp991-1001. [98] Khadkikar, V., Chandra, A., Barry, A.O.and Nguyen, T.D “Conceptual Study of Unified Power Quality Conditioner ” IEEE International Symposium on Industrial Electronics,2006, Vol. 2 , pp.1088 - 1093. [99] Hojo, M. and Funabashi, T. “Unified Power Quality Conditioner for dynamic voltage restoration and fault current limitation” International Conference on Harmonics and Quality of Power,2008, pp. 1 - 5. [100] Benslimane, T., Aliouane, K.and Chetate, B. “Voltage and current disturbances elimination with reactive power compensation using unified power quality 171 conditioner” International Symposium on Power Electronics, Electrical Drives, Automation and Motion,2006, pp .780 - 784. [101] Mokhtatpour, A.and Shayanfar, H.A “Power Quality Compensation as Well as Power Flow Control Using of Unified Power Quality Conditioner” Power and Energy Engineering Conference, 2011, pp. 1 - 4. [102] Saren, H., Pyrhonen, O., Luukko, J., Laakkonen, O.and Rauma, K. “Verification of frequency converter with small DC-link capacitor” Power Electronics and Applications,2005, pp.1-10. [103] Haijun Tao, Qinghua Gao,and Bingfeng Li “Research on dual-PWM variablefrequency converter based on current predictive control” Control and Decision Conference,2010,pp.1421-1424. [104] Chaves, M.,Margato, E.,Silva, J.F.and Pinto, S.F. “New approach in back-to-back m-level diode clamped multilevel converter modeling and direct current bus voltages balancing” IET Power Electronics,2010, Vol .3 , No.4 , pp .578 - 589. [105] Filsecker, F., Álvarez, R.and Bernet, S. “Design and losses of PWM current source converters” IEEE International Conference on Industrial Technology,2010, pp .737 744. [106] Cho, G.-H.and Park, S.S. “A new current source inverter with simultaneous recovery and commutation” IEEE Transactions on Industry Applications,1989, Vol .25 , No. 1 , pp. 162 - 171. [107] Motto, E.R.,Donlon, J.F., Tabata, M., Takahashi, H., Yu, Y.and Majumdar, G. “Application characteristics of an experimental RB-IGBT (reverse blocking IGBT) module” IEEE Conference on Industry Applications,2004, Vol. 3, pp .1540 - 1544. [108] Igarashi, S., Miyashita, S., Wakimoto, H., Nakazawa, H.and Okuma, Y. “Advanced three-level converter with newly developed 1200V reverse blocking IGBTs” European Conference on Power Electronics and Applications,2011 ,pp .1 7. [109] Lafoz, M.,Iglesias, I.J., Portillo, S.and Ugena, D. “Experimental results of a threelevel voltage source inverter with hysteresis-band current control and hybrid PWMSVM voltage control” Power Electronics Specialist Conference,2003 , Vol. 1, pp .183 – 188. [110] Agarwal, V. and Agarwal, A.,“FPGA based delta modulated cyclo-converter” Power Engineering and Optimization Conference ,2011, pp. 301 - 305. 172 [111] li zhang and William shepherd ‘Power converter circuits” CRC press ,2004,chapter. 12. [112] Syam, P., Nandi, P.K.and Chattopadhyay, A.K. “Improvement in power quality and a simple method of sub harmonic suppression for a cycloconverter-fed synchronous motor drive” IEEE Proceedings Electric Power Applications,2002, Vol .149 , No .4 , pp .292 - 303. [113] Jussila, M. and Tuusa, H, “Semiconductor Power Loss Comparison of Space-Vector Modulated Direct and Indirect Matrix Converter” IEEE power conversion conference,2007 , pp. 831 - 838. [114] Sahoo, A.K., Meenakshi, J., Dash, S.S.and Thyagarajan, T. “Analysis and simulation of matrix converter using PSIM” International Conference on Power Electronics, 2007,pp.414 - 419. [115] Lasseter,R.H. “MicroGrids” IEEE Power Engineering Society Winter Meeting, 2002, vol.1 ,pp. 305 – 308. [116] Yan Li and Yun Wei Li “Power Management of Inverter Interfaced Autonomous Microgrid Based on Virtual Frequency-Voltage Frame” IEEE Transactions on Smart Grid ,2011,Vol .2 , No.1 , pp 30 - 40. [117] Hossam-Eldin, A.A., Elrefaie, H. and Mohamed, G.K. “Study and simulation of the unified power flow controller effect on power systems” Power Systems Conference,2006, Vol. 2, pp .461 - 467. [118] Mahdad, B., Bouktir, T.and Srairi, K. “Strategy of location and control of FACTS devices for enhancing power quality” IEEE Electro technical Conference,2006, pp. 1068 - 1072. [119] Thukaram, D., Khincha, H.P. and RaviKumar, B. “Harmonic minimization in the operation of static VAR compensators for unbalanced reactive power compensation” Power System Technology,2004, Vol .1 ,pp.328 - 334. [120] [125] Singh, B. Saha, R. Chandra, A. Al-Haddad, K. “Static synchronous compensators (STATCOM): IET a review Power Electronics,2009, Vol .2 ,No.4, pp.297 - 324. [121] Tain-Syh Luor, Yuan-Yih Hsu, Tzong-Yih Guo, Jiann-Tyng Lin and Chiung-Yi Huang “Application of thyristor-controlled series compensators to enhance oscillatory stability and transmission capability of a longitudinal power system” IEEE Transactions on Power Systems,1999, Vol.14 , No .1 , pp. 179 - 185. 173 [122] Seul-Ki Kim, Hwachang Song, Byongjun Lee and Sae-Hyuk Kwon “Enhancement of Interface Flow Limit using Static Synchronous Series Compensators’ Transmission and Distribution Conference and Exhibition,2006, pp. 714 - 719. [123] Wang, H.F. ,Jazaeri, M. and Cao, Y.J. “Operating modes and control interaction analysis of unified power flow controllers Generation”, IEE Proceedings Transmission and Distribution, 2005, Vol. 152 , No. 2 , pp. 264 - 270. [124] Xuan Wei, Chow, J.H., Fardanesh, B.and Edris, A. “A dispatch strategy for a unified power-flow controller to maximize voltage-stability-limited power transfer” IEEE Transactions on Power Delivery,2005, Vol .20 , No. 3 , pp .2022 - 2029. [125] Jatit. s., Tara Kalyani, g. and Tulasiram Das “Simulation Of Real And Reactive Power Flow control With UPFC Connected to A transmission Line” Journal Of Theoretical And Applied Information Technology ,2008, pp.16-23. [126] Hossam-Eldin, A.A., Elrefaie, H. and Mohamed, G.K. “Study and simulation of the unified power flow controller effect on power systems” Power Systems Conference, 2006, vol. 2 , pp .461 - 467. [127] Katsis, D., Wheeler, P. ,Clare, J.and Zanchetta, P. “A three-phase utility power supply based on the matrix converter” Industry Applications IEEE Conference,2004, vol.3, pp. 1447 – 1451. [128] Holtsmark, N. and Molinas, M. “Reactive power compensation using an indirectly space vector-modulated matrix converter” IEEE International Symposium on Industrial Electronics,2010, pp .2455 - 2460. [129] Divyaa. K. C. , and Nagendra Raoa P. S. “Effect of Grid Voltage and Frequency Variations on the Output of Wind Generators” Electric Power Components and Systems ,2008,No .6,pp. 602-614 20. [130] Basak, P. ,Saha, A.K., Chowdhury, S. and Chowdhury, S.P. “Microgrid: Control techniques and modeling” Universities Power Engineering Conference,2009, pp .1 5. [131] Xiongfei Wang, Guerrero, J.M.,and Zhe Chen; “Control of grid interactive AC microgrids” IEEE International Symposium on Industrial Electronics ,2010 ,pp . 2211 - 2216. [132] W. Mohd, A., Lingemann, M., Hamsic, N., Schmelter, A. and Morton, D. “Control methodology of distributed generation in interconnected grids” Power Systems Conference and Exposition,2009, pp .1 - 6. 174 [133] Mehrizi-Sani, A. and Iravani, R. “Potential-Function Based Control of a Microgrid in Islanded and Grid-Connected Modes” IEEE Transactions on Power Systems, 2010, Vol .25 , No. 4 , pp. 1883 - 1891 . [134] Ling Su, Jianhua Zhang, Weishi Miao, Qi Yang and Ruoxi Liu, “Study on Control Strategy for Islanded Microgrid Based on Micro turbine” Power and Energy Engineering Conference ,2010,pp .1 - 4 . [135] Soroudi, A., Ehsan, M., Caire, R. and Hadjsaid, N. “Possibilistic Evaluation of Distributed Generations Impacts on Distribution Networks” IEEE Transactions on Power Systems,2011, Vol .26 , No. 4, pp. 2293 - 2301. [136] Jong-Yul Kim,Jin-Hong Jeon, Seul-Ki Kim, Changhee Cho, June Ho Park,Hak-Man Kim and Kee-Young Nam, “Cooperative Control Strategy of Energy Storage System and Microsources for Stabilizing the Microgrid during Islanded Operation” IEEE Transactions on Power Electronics,2010, Vol .25 , No.2 , pp .3037 - 3048. [137] Au-Yeung, J., Vanalme, G.M.A., Myrzik, J.M.A,. Karaliolios, P., Bongaerts, M., Bozelie, J. and Kling, W.L. “Development of a voltage and frequency control strategy for an autonomous LV network with distributed generators’ Universities Power Engineering Conference,2009, pp .1 - 5. [138] Kang, M., Enjeti, P.N.and Pitel, I.J. “Analysis and design of transformers for electric power distribution system”. IEEE Transactions on Power Electronics,1999, Vol .14 , No. 6 , p p.1133 - 1141. [139] Zhibing ,W. and Kunshan. .Y “The research of Power Electronic Transformer (PET) in Smart distribution network” International Conference on Power System Technology,2010, pp .1 – 7. 175