This book provides a comprehensive introduction to the fundamental concepts of electric drives and is eminently suited as a textbook for B.E./B.Tech., AMIE and diploma courses in electrical engineering. It can also be used most effectively by all those preparing for GATE and UPSC competitive examinations, as well as by practising engineers. The topics, which range from principles and techniques to industrial applications, include characteristic features of drives, methods of braking and speed control, electromagnetic and solid state control of motors, motor ratings, transients in drive systems, and operation of stepper motors.
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SPEED CONTROL OF DC MOTORS 60118
SPEED CONTROL OF AC MOTORS 119165
HEATING AND POWER RATING OF DRIVE MOTORS 166197
TRANSIENTS AND DYNAMICS 198249
ac supply acceleration armature circuit armature current braking torque bridge rectifier cage induction motor capacitors chopper commutation constant horsepower constant torque contactor converter copper loss counter current braking curve cycloconverter dc motor dc series motor dc shunt motor decreases delay angle diodes dynamic braking electric drives energy loss equation external resistance field current field excitation field resistance flux flywheel full-load gear induction motor inertia inverter load torque machine magnetic maximum torque method mode moment of inertia motor drive motor speed motor torque no-load obtained output voltage phase plugging poles power factor quadrant rad/s rated ratio reactance regenerative braking relay reverse rheostatic rotation rotor circuit rotor resistance separately excited shown in Fig single-phase slip slip-ring induction motor speed control speed-torque characteristics starter stator stepper motor switch synchronous motor synchronous speed temperature rise three-phase thyristor timer transistors waveforms zero