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POWER ELECTRONICS LABORATORY (18EEL58)

Saturday, December 26, 2020

POWER ELECTRONICS LABORATORY

Course Code 18EEL58
CIE Marks 40 SEE Marks 60
Number of Practical Hours/Week (L:T:P) 0:2:2 
Credits 02 Exam Hours 03

Course Learning Objectives:

  • · To conduct experiments on semiconductor devices to obtain their static characteristics.
  • · To study different methods of triggering the SCR
  • · To study the performance of single-phase controlled full wave rectifier and AC voltage controller with R and RL loads.
  • · To control the speed of a DC motor, universal motor and stepper motors.
  • · To study single phase full bridge inverter connected to resistive load.


Experiments

1 Static Characteristics of SCR.
2 Static Characteristics of MOSFET and IGBT.
3 Characteristic of TRIAC.
4 SCR turn on circuit using synchronized UJT relaxation oscillator.
5 SCR digital triggering circuit for a single phase controlled rectifier and ac voltage regulator.
6 Single phase controlled full wave rectifier with R load, R –L load, R-L-E load with and without free
wheeling diode
7 AC voltage controller using TRIAC and DIAC combination connected to R and RL loads.
8 Speed control of DC motor using single semi converter.
9 Speed control of stepper motor.
10 Speed control of universal motor using ac voltage regulator.
11 Speed control of a separately excited D.C. Motor using an IGBT or MOSFET chopper.
12 Single phase MOSFET/IGBT based PWM inverter.



Course Outcomes: At the end of the course the student will be able to:

  • · Obtain static characteristics of semiconductor devices to discuss their performance.
  • · Trigger the SCR by different methods
  • · Verify the performance of single phase controlled full wave rectifier and AC voltage controller with R and RL loads.
  • · Control the speed of a DC motor, universal motor and stepper motors.
  • · Verify the performance of single phase full bridge inverter connected to resistive load.

Conduct of Practical Examination:

1. All laboratory experiments are to be included for practical examination.
2. Breakup of marks and the instructions printed on the cover page of answer script to be strictly adhered
by the examiners.
3. Students can pick one experiment from the questions lot prepared by the examiners.
4. Change of experiment is allowed only once and 15% Marks allotted to the procedure part to be made zero