About the course
The purpose of this course is to provide fundamental concepts and knowledge necessary to design and apply brush and brushless DC motor drives. This course is intended for design engineers and field application engineers in the motion control industry who wish to clarify basic principles. The course will also include a brief discussion on the magnetic and mechanical structure of the various motor types to understand torque production mechanisms and to derive a circuit model.
The content will cover most of the basic skills in designing brush and brushless DC motor drives including power electronic circuits, analog and digital motor control hardware, gate drive and feedback sensors, with particular emphasis on motor control algorithms and servo systems. From the author's long experience in research and development of many types of drives, practical and useful procedures in selecting components and methods, rule-of-thumb design rules and performance versus cost trade-off will be discussed.
About the Instructor
Dr. Dal Y. Ohm is the president of Drivetech, Inc., a technical consulting firm specializing in design and development of motor control, drives and renewable energy converter systems. He has more than 25 years of industrial and academic experience in research and product development in motor drives, servo systems, and power converters. His major areas of interest include motion control, digital control and robotics, Field Oriented and sensorless control, AC and DC motor drives and power electronics. He has more than 50 published articles and conference presentations in the above areas.
Prior to consulting, he was Technical Director at Kollmorgen Motion Technologies Group. He was also with Baldor Electric Company and Electrocraft Inc. He taught engineering courses (Electric Machines, Robotics, Digital Control) at San Jose State University, NPU, and Cogswell Polytechnical College as Adjunct Professor for many years. Dr. Ohm received PhD and MS degrees in Electrical Engineering from Texas A&M University. He is a member of IEEE, SAE and A3.
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- Motor Control Basics
- Torque production mechanism in electric motors
- Various motor types
- Control of brushed DC motors
- Brushless motors and electronic commutation
- Other motor types
- Power Electronics and Analog Motor Drives
- Power electronics devices
- Switch configuration and PWM
- Gate drive design
- Brushless motor controllers
- 2Q and 4Q drive
- Drive Configuration
- Current limiting and bus current control
- Feedback sensors
- Sinusoidal drives
- Phase current control
- DSPs for motor drives
- Servo Systems and Motion Control
- Servo systems fundamentals
- PID and other velocity and position control algorithms
- Mechanical resonance modeling and digital filtering technique
- Motion profiles and system sizing (selection of motors and drives)
- Dynamic model of brushless motors
- Frame transformation and synchronous d-q frame model of motors
- Angle advance control of brushless motors
- New Technologies in Motor Control
- Space vector modulation
- Sensorless control
- Modeling and simulation