MUST READ QUESTIONS Reg 2013 – SSD

MUST READ QUESTIONS – SSD

UNIT-1

1.     Equations governing motor load dynamics

2.    Steady state stability

3.    Multi quadrant dynamics

4.    Acceleration, deceleration, starting & stopping  (MODES OF OPERATION)

5.    Typical load torque characteristics (5)

6.     Selection of motor (5)

7.     PROBLEMS

UNIT-5

1.     Transfer function for DC motor / load and converter

2.   Closed loop control with Current and speed feedback–armature voltage control and field weakening mode

3.   Design of current controllers

4.   Converter selection and characteristics (5)

UNIT-4

      1   V/f control and self control of synchronous motor
      2.   Margin angle control
      3.   Power factor control (5)
      4.   Permanent magnet synchronous motor (SINUSOIDAL& TRAPEZOIDAL)
     5.    PROBLEMS

UNIT-2

1. Steady state analysis of the single converter fed separately excited DC motor Drive–continuous and discontinuous conduction
2. Steady state analysis of the three phase converter fed separately excited DC motor Drive–continuous and discontinuous conduction
3. Time ratio and current limit control (5)
4. 4 quadrant operation of converter / chopper fed drive.
5. PROBLEMS

UNIT-3

1. Stator voltage control
2. V/f control
3. Constant air gap flux
4.  Voltage / current fed inverter – closed loop control
5. PROBLEMS