Content
UNIT – I: CONTROLLED BRIDGE RECTIFIER (1-Ф) WITH DC MOTOR LOAD: Separately exited DC motors with rectified single phase supply, single phase semi converter and single phase full converter for continuous and discontinuous modes of operation, power and power factor.
UNIT – II: CONTROLLED BRIDGE RECTIFIER (3-Ф) WITH DC MOTOR LOAD: Three phase semi converter and three phase full converter for continuous and discontinuous modes of operation, power and power factor, addition of free wheeling diode, three phase double converter.
UNIT – III: THREE PHASE NATURALLY COMMUTATED BRIDGE CIRCUIT AS A RECTIFIER OR AS AN INVERTER: Three
phase controlled bridge rectifier with passive load impedance, resistive load and ideal supply, highly inductive load and ideal supply for load side and supply side quantities, shunt capacitor compensation, three phase controlled bridge rectifier inverter.
UNIT – IV: PHASE CONTROLLED DC MOTOR DRIVES: Three phase controlled converter, control circuit, control modeling of three phase converter, steady state analysis of three phase converter control DC motor drive, two quadrant, three phase converter controlled DC motor dive, DC motor and load converter.
UNIT – V: CURRENT AND SPEED CONTROLLED DC MOTOR DRIVES: Current and speed controllers, current and speed feedback, design of controllers, current and speed controllers, motor equations, filter in the speed feed back loop speed controller, current reference generator, current controller and flow chart for simulation, harmonics and associated problems, sixth harmonics torque.
