Aims & Learning Objectives:
To provide familiarisation with the fundamentals of electrical drive theory and applications in a practical way by introducing the participants to the principles of electromechanical energy conversion, AC and DC electrical motors, power electronics and variable-speed drives.
After taking this unit the student should be able to:
read electrical circuit diagrams, understand the principles of electrical motor operation, appreciate the role of power electronic devices and circuits, understand the requirements for efficient variable-speed operation and motion control.
Content:
Electromagnetism : voltage, current, flux, force, torque; DC, AC, three-phase system;
Electric motors: types, sizes, supply requirements, torque/speed characteristic, starting/overloading problems, possibilities for variable-speed operation.
Power electronics: devices (thyristors, bipolar transistors, FETs, IGBTs), configurations, converters, PWM, applications
Noise: airborne noise due to PWM; electro-magnetic interference (EMI) pollution.
Motion control: speed/position control for both DC and AC motors, supply requirements, control algorithms.
Exercises: simulation exercise; AC & DC drive design examples; DC drive exercise; laboratory work.
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