State advantages and drawbacks of multi-level Inverter
[3 marks]Explain the drawbacks of diode rectifier with filter load
[4 marks]Discuss operation of diode clamped multilevel inverter with neat circuit diagram and waveforms.
[7 marks]Explain the effect of switching frequency on harmonics spectrum in inverter.
[3 marks]Derive the Fourier transform of square wave output of full-wave bridge Inverter.
[4 marks]Draw the space vector diagram for three level SVPWM techniques and calculate the magnitude of large, medium and small vectors.
[7 marks]Explain Power Factor Correction technique using PWM converter connected as line side rectifier.
[7 marks]What is the difference between scalar and vector control of induction motor.
[3 marks]Explain Park and Clarke Transformation Matrix.
[4 marks]Draw and explain block diagram of CSI variable frequency drive with current control.
[7 marks]Draw equivalent d-q circuit model of Induction motor
[3 marks]Explain the method to maintain constant air gap flux in induction motor drives and state its importance.
[4 marks]Discuss Direct Torque Control (DTC) method of Induction motor drive.
[7 marks]Classify BLDC motor based on construction
[3 marks]State advantages and drawbacks of close loop control drives in comparison with open loop drives.
[4 marks]Explain open loop v/f control of synchronous machines
[7 marks]State application of synchronous motor drive.
[3 marks]Explain basic working principle of BLDC motor
[4 marks]Explain CSI fed synchronous motor drives
[7 marks]State advantages and drawbacks of PM motors.
[3 marks]Explain speed estimation using DSP block1
[4 marks]Discuss speed control in BLDC motors.
[7 marks]Draw block diagram for closed loop speed control of SRM.
[3 marks]Discuss PWM module in DSP.
[4 marks]Explain closed-loop switch reluctance motor drive.
[7 marks]