Explain basic principle of speed control of IM.
[3 marks]Compare AC motor drives with DC motor drives.
[4 marks]Discuss operation of induction motor on unbalanced source voltage with necessary equation.
[7 marks]Draw Torque slip characteristics of IM.
[3 marks]Define power factor and state methods of improving power factor.
[4 marks]Explain the principle behind the variation of the speed of a 3-Ф IM by v/f method for Operation below rated frequency.
[7 marks]Explain speed control of IM using power electronics converter for Rotor Resistance method
[7 marks]Derive equation for slip power.
[3 marks]Explain super synchronous speed operation of IM.
[4 marks]Discuss Induction motors fed by PWM frequency inverters.
[7 marks]Explain principles of synchronous motor control.
[3 marks]Discuss block diagram of Inverter Fed Open Loop Synchronous Motor Drive.
[4 marks]Explain self – controlled synchronous motor drive using load commutated Thyristor inverter.
[7 marks]Enlist speed control methods for synchronous motor.
[3 marks]Explain the Principle of Vector control.
[4 marks]Discuss reference frame theory for induction motor in brief.
[7 marks]State advantages of static scherbius system over static Kramer drive.
[3 marks]Compare FCCSI and LCCSI in terms of motor type, power, Speed range, accuracy, maximum speed, performance.
[4 marks]Write a short note: Dynamic d-q model of Induction Motor.
[7 marks]List the braking method of Induction Motor.
[3 marks]Draw indirect vector control block diagram with open loop flux control.
[4 marks]Explain principle of direct torque control scheme using necessary block diagram and switching logic.
[7 marks]Draw block diagram of feed-forward vector control for IM.
[3 marks]Explain the basic principle of DTFC for Voltage fed PWM inverter drives.
[4 marks]Discuss trapezoidal PMAC motor drive for servo application. .
[7 marks]