Unit 1: Basic of Electrical machines:- D.C. motors, Types of D.C. motors, torque speed characteristics. Induction motors, Types of Induction motors. Synchronous machines. Unit 2: D.C. Motor Control:- Separately excited DC motors with rectified single phase supply- single phase semi converter and single phase full converter for continuous and discontinuous modes of operation. Three phase semi converter and three phase full converter for continuous and discontinuous modes of operation. Closed loop control of phase controlled DC motor Drives: - Open loop Transfer function of DC Motor drive- Closed loop Transfer function of DC Motor drive –Phase-Locked loop control. Chopper controlled DC motor drives, Closed loop control of chopper fed DC motor Drives Unit 3: AC motor Control: Voltage Source Inverter Fed Induction motor drives : - Scalar control- Voltage fed Inverter control-Open loop volts/Hz control-Speed control with slip regulation-Speed control with torque and Flux control-Current controlled voltage fed Inverter Drive. Current Source Inverter Fed Induction motor drives : - Current-Fed Inverter control-Independent current and frequency control-Speed and flux control in Current-Fed Inverter drive-Volts/Hz control of Current-Fed Inverter drive-Efficiency optimization control by flux program. Slip power recovery schemes: - Slip-power recovery Drives-Static Kramer drive, Static scherbius drive. Vector control of Induction Motor. Unit 4: Stepper motors:- Classification, types, modes of excitations, Drive requirements, Unipolar voltage drive for various reluctance, motor bipolar voltage drive for permanent magnet and hybrid step motors. Drives for specific applications: - Drive considerations for textile mills, steel rolling mills, cranes and hoist drives, cement mills, sugar mills, paper mills, coal mills, centrifugal pumps.
- Teacher: S A Shinde