1. ELECTRIC MOTORS: Introduction
- Introduction
- Producing Rotation
- Magnetic Circuits
- Torque Production
- Specific Loadings and Specific Output
- Energy Conversion – Motional EMF
- Equivalent Circuit
- General Properties of Electric Motors
2. POWER ELECTRONIC CONVERTERS FOR MOTOR DRIVES
- Introduction
- General arrangement of drives
- Voltage Control – DC Output from DC Supply
- Switching control Transistor chopper
- Chopper with inductive load – overvoltage protection, Features of power electronic converters
- DC from AC – Controlled Rectification
- The thyristor Single-pulse rectifier
- Single-phase fully controlled converter – output voltage and control 3-phase fully controlled converter, Output voltage range, Firing circuits
- AC from DC SP – SP Inversion
- Single-phase inverter Output voltage control Sinusoidal PWM 3-phase inverter
- Forced and natural commutation – historical perspective Matrix converters
- Inverter Switching Devices
- Bipolar junction transistor (BJT) Metal oxide semiconductor field effect transistor (MOSFET) Insulated gate bipolar transistor (IGBT) Gate turn-off thyristor (GTO)
- Converter Waveforms and Acoustic Noise
- Cooling of Power Switching Devices
- Thermal resistance
- Arrangement of heatsinks and forced air cooling Cooling fans
- Review Questions
3. CONVENTIONAL DC MOTORS
- Introduction
- Torque Production
- Function of the commutator
- Operation of the commutator – interpoles
- Motional E.M.F.
- Equivalent circuit
- No-load speed
- Performance calculation – example
- Behavior when loaded
- Base speed and field weakening
- Armature reaction
- Maximum output power
- Transient Behavior – Current Surges
- Dynamic behavior and time-constants
- Shunt, Series and Compound Motors
- Shunt motor – steady-state operating characteristics
- Series motor – steady-state operating characteristics
- Universal motors
- Compound motors
- Four-Quadrant Operation and Regenerative Braking
- Full speed regenerative reversal
- Dynamic braking
- Toy Motors
- Review Questions
4. DC MOTOR DRIVES