Compare CSI with VSI giving three points.
[3 marks]Explain CSI control for Induction Motor.
[4 marks]Describe the analysis of Induction Motor with (1) Unbalanced rotor impedances & (2) Non-sinusoidal voltage supply.
[7 marks]Explain induction motor drive fed from VSI. .
[3 marks]Discuss drawback of IM Drive fed from a stepped wave Inverter.
[4 marks]What are the similarities between a brushless dc motor and a conventional dc motor? Why it is known as a brushless dc motor? Enlist its advantages over a conventional dc motor.
[7 marks]Discuss trapezoidal PMAC motor drive for servo application.
[7 marks]Discuss advantages of stator voltage control method for constant load-torque.
[3 marks]Discuss advantages of stator voltage control method for Fan type loads.
[4 marks]Discuss IM’s behavior for non-sinusoidal source voltages.
[7 marks]Draw block diagram of a dc link converter for multi-motor ac drive.
[3 marks]Explain the derivation of stator reference frame model.
[4 marks]Explain the principle behind the variation of the speed of a 3-Ф IM by v/f method. Discuss this for the operation below and above rated frequency.
[7 marks]Draw the circuit for self-controlled synchronous motor drive using load commutated thyristor-based inverter.
[3 marks]Discuss reference frame theory for induction motor in brief.
[4 marks]Draw and explain the thyristor configuration for a stator voltage controlled reversible-speed Induction Motor Drive. Also draw the speed-torque characteristics for a reversible induction motor drive.
[7 marks]Draw the 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]Explain variable-frequency operation of Induction Motor. Also draw torque characteristics for this motor at constant volts / Hz.
[7 marks]Discuss on sensitivity of vector-controlled Induction Motor
[3 marks]Discuss on compensation of vector-controlled Induction Motor
[4 marks]Explain the concept of direct vector control of Induction Motor Drive.
[7 marks]Brief the idea about speed control of synchronous motor by vector control method.
[3 marks]Discuss dynamic d-q model of Induction Motor.
[4 marks]Discuss Principle of indirect vector control with necessary diagram.
[7 marks]