# Three Phase Half/Full Wave Converter

## Three Phase Half-Full Wave Converter

Tags: Three Phase full converter, three phase half wave rectifier, procedure for three phase half or full wave converter, Three phase AC to DC Converter, Three phase Full converter using SCR,,
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###### Aim

To Construct Three Phase Half/Full Wave rectifier

###### Apparatus required

• Three phase Half /Full Converter kit
• Patch chords
• Power chord
• Three Phase Step-down Transformer
• Lamp Load (or) DC motor
• CRO

###### CRO Settings

• Time (X) Axis : 5ms/div
• Voltage (Y) Axis : 20V/div
• Probe : 1:10 CRO Probe is suitable one.

###### Initial Settings

• 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

• 1. The connections are made as per the circuit diagram given above.

• 3. Turn on the SW2 and observe the waveform across between G1&K1, G2&K2, G3&K3, G4&K4, G5&K5 and G6&K6. 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 α and note down Vo.

##### Note

*If the connections are wrong the kit may get damage.

*The load must be R and RL. Do not connect L Load alone.

###### Tabulation

 S.NO OFF Time(ms) ON Time(ms) Alpha(α in Degree) Vo(Volts) 1 4 6 72 64 2 3 4 5

###### Model Calculation

Total Time Period

###### Result

Above experiment was done and the result was verified with Motor Running.