To Construct Three Phase Semi Converter
☞Lamp Load or DC motor
Circuit Diagram for Three Phase Semi Converter
☞Time (X) Axis: 5ms/div
☞Voltage (Y) Axis: 20V/div
☞Probe: 1:10 CRO Probe is suitable one.
☞Ensure the 440V Power Supply is in proper with Tester.
☞Ensure the CRO is working properly with probe checking and proper ground line axis.
Mimic Diagram for Three Phase Semi Converter
☞1. The connections are made as per the circuit diagram given above.
☞2. The Load must be Lamp Load or DC Motor.
☞3. Turn on the SW2 and observe the waveform across between G1&K1, G3&K3, and G5&K5. And ensure it is like triggering pulse given in model graph.
☞4. Turn ON SW1 and observe the waveform across the load.
☞5. Measure the X-axis time interval of ON time of Load Voltage and OFF Time of Load Voltage.
☞6. Adjust the value of Firing angle and note down the load voltage
☞7. Repeat the step 5.
☞8. Repeat the experiment for different values of a and note down Vo.
*If the connections are wrong the kit may get damage.*The load must be R and RL. Do not connect L Load alone
|S.NO||Alpha(α in Degree)||Vo(Volts)|
Total Time Period
Above experiment was done and the result was verified with Motor Running.