This 2-day comprehensive application-focused course is delivered in an easy-to-understand
approach based on fundamental principles and many case studies drawn from the expert
instructor’s consulting experience. Participants are encouragedto bring their motor &
drive problems for discussion.
16
A
PD ppro
U ve
by d
PE
B
Electric Motors and Variable Speed Drives
27 - 28 June 2012
York Hotel Singapore
8.30 am - 5.30 pm
2 - 3 July 2012
Hotel Royal, Kuala Lumpur
Er. Dr. Lock Kai Sang
BSc PhD FAAET FIES FIEE FICS FSIArb SMIEEE MIEM CEng ACPE PEng
Principal, PQR Consultants
Co-author of “Grounds for Grounding – A Circuit-to-System Handbook” published by IEEE/Wiley
Reminder for Singapore Participants!!
Enjoy 30% Cash Payout or 400% Tax Deduction/Allowances. Effectively saving up to 68% on Course Fees under IRAS’s PIC scheme!!
http://iras.gov.sg/irashome/PIcredit.aspx
Who Should Attend
This course is intended for engineers and experienced technical staff who are involved in the design, specification, purchase or application and
maintenance of systems with motor drives. They include plant engineers and technicians, consulting engineers, process and control engineers,
maintenance engineers and supervisors. Marketing and sales engineers of motors and variable speed drives will also find the course very beneficial.
Course Objectives
This course is intended to familiarize the participants with performance
and application aspects of electric motors and variable speed drives. It
provides a comprehensive review of the major types of industrial drives
and the technologies in use today. Mathematical treatment will be kept
to minimum in order to concentrate on the application aspects. At the
end of the course, participant should be able to select drives for their
particular applications and to operate and maintain their existing drives
with more confidence. Vendors of motors and variable speed drives will
gain a good foundation of the principles and be able in a better position
to advise clients and bid for tenders.
•
•
•
•
•
•
•
•
•
•
Course Outline
Types of Motors and Their
Characteristics
• DC motors
• AC motors
• Servo motors
• Understanding motor ratings & specifications
• Open-loop control
• Closed-loop control
• Speed and position feedback devices
• DC motor drive control
• AC motor drive control
• Direct torque control
Induction Motors
• Classification of motors
• Torque speed characteristics
• Starting
• Soft starter
• Speed control
• Transient and dynamics
• Power supply requirements
Harmonics
• Supply harmonics due to drives
• Adverse effects of harmonics
• Harmonic distortions
• Harmonic resonance problems
• Problem with power capacitors
• Solving harmonic problems
• Phase shift transformers
• Harmonic filters
• Compliance with standards
Variable Speed Drives
• Converter/inverter circuits
• Variable speed dc drives
(thyristor-controlled)
• Variable speed ac drives (VFDs)
• Modern features of VSDs
• Common application problems of VSDs and solutions
• Transformer, converter/inverter
and motor interaction
• Rating specifications
• Application issues
Motion Control & Automation
• Review of speed and position control
Major Topics
Characteristics of various types of electric motors and drives
How to select motors and variable speed drives
Motor starting requirements
How to enhance the voltage dip ride-through capability of motors
drives
The nature and problems of harmonics generated by variable speed drives
How to solve power capacitor failure problem due to harmonics
How to deal with EMC problems
Application for automation and motion control
How to size capacitors for power factor improvement
Real problems and solutions through case studies
Voltage Dip & Other EMC Problems
• EMC behaviour of variable-speed drives
• Tripping of motors and drives due to voltage dips
• Requirements of SEMI F47
• Techniques to enhance voltage dip ride-through
• Grounding and shielding to control
EMI
• Cable screening
Energy Efficient applications
• Methods for power factor correction
• Energy efficient motors
• Energy efficient applications
Application & Maintenance
Considerations
• Motor load and mechanical considerations
• Matching motor/drives’ ratings to load requirements
• Power supply considerations
• Ambient conditions
• Drives for potentially hazardous atmosphere
• Failure modes of motors and drive systems
• Motor maintenance overview
Case Studies
• Harmonic problems of motor
drives
• Drop-out of motor contactors
and variable-speed drives during voltage dip
• Frequent failure of power factor capacitors
• Application for propulsion and thruster
EEM Advancement Centre Pte Ltd
CPD Advancement Centre
Your Partners in Professional Advancement Since 1989
About the Instructor
Er. Dr. Lock Kai Sang
Dr. Lock is well-received as a short course instructor. Participants appreciate his delivery based on his
unique blend of practical hands-on professional and academic experience over 30 years.
He is the Principal of PQR Consultants, with specialization in the areas of power electronics & drives,
power quality, EMC, reliability and safety. He is well-sought for advice on challenging electrical problems,
including commercial & industrial electrical systems and offshore platforms. Over the past few years he
has been actively involved in the review and performance assessment of large thruster drives for deep sea
drilling platforms. He has also consulted for many projects on simulation, measurement and mitigation of
harmonic problems associated with variable speed drives (VFD). He has conducted failure investigations
on motors/drives for application in air-con system, water treatment plant and semisubmersible rigs.
Dr. Lock received his B.Sc. (1st Class Honours) in Electrical and Electronics Engineering in 1975 from the
University of Strathclyde, UK. He completed his Ph.D. degree at the same university in 1979 researching
on the design optimization of electrical motor. He joined the National University of Singapore in 1980 as a
lecturer and was the Head of its Power and Machines Division, Department of Electrical Engineering, when
he left in 1997 to set up his consulting practice. He supervised many research projects and postgraduate
students in the areas of power electronics and motor control.
He is a Past President of the Institution of Engineers, Singapore, a Past Chairman of the IEE Centre and
founding Chairman of IEEE Power Chapter. He is co-author of a book “The Grounds for Grounding –
from Circuits to Systems” published by IEEE/John Wiley .
Other courses to be conducted by Dr Lock in 2012
•
EMC in Built Environment (July)
•
Protection of Industrial Power Systems (August)
•
Electrical Safety - Causes and Prevention of Electrical Hazards (September)
•
Electrical Installations Design (October)
•
Ligntning Protections Buildings, Services and Electronic Systems (November)
•
Technical Report Writing (December)
Registration Details
How to Register
TEL : (02) 64699615
FAX : (02) 64695190
Email : eem@pacific.net.sg
Fee & Payment : S’pore
M’sia
Individual Fee
S$1,098 RM 1,990
Group for 3 or more delegates S$ 998 RM 1,790
Fee includes tuition, training materials, lunches, morning/
afternoon refreshments and certificate of completion.
For Singapore Course : Please made payment in S$ to
“EEM Advancement Centre Pte Ltd”
For Malaysia Course : Please made payment in RM to
“CPD Advancement Centre”.
Mail complete registration with appropriate payment to:
EEM Advancement Centre Pte Ltd, 170 Upper Bukit Timah
Road, #18-01 Bukit Timah Shopping Centre, Singapore
588179.
Registration Form
Electric Motor and Variable Speed Drives
 27 - 28 June 2012 @ York Hotel Singapore
 2 - 3 July 2012 @ Hotel Royal, Kuala Lumpur
1. Mr/Ms Designation/Dept
2. Mr/Ms
Designation/Dept
3. Mr/Ms
Designation/Dept
Company
Nature of Business
Address
Cancellation & Refunds : You may cancel your registration up
to two weeks before the course and your registration fee will be
refunded in full. If you need to cancel less than two weeks prior
to the course, you (1) may send a substitute, (2) will be liable for
10% of the fee. Confirmed registrants who fail to attend and do not
cancel their registrations in advance are liable for the entire fee.
Contact Person : Mr/Ms
The organizer reserves the right to cancel or reschedule the
courses without prior notice.
Enclosed Cheque No.
Designation/Dept
Contact Tel No.
Fax
Email
Amount
Please photocopy registration forms for use