Three phase half wave controlled converter with R load and RL Load with different Firing angles

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3-PHASE HALF WAVE
CONVERTER
Dr. A. Ravi
Professor/EEE
FRANCIS XAVIER ENGINEERING COLLEGE
TIRUNELVELI
Tamil Nadu - India

2. Dr.A.Ravi, Francis Xavier Engineering College,Tirunelveli
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CIRCUIT DIAGRAM
Three single phase half-wave converters

3. Dr.A.Ravi, Francis Xavier Engineering College,Tirunelveli
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THREE PHASE HALF WAVE RECTIFIER

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THREE PHASE HALF WAVE RECTIFIER
α =15°
R Load

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THREE PHASE HALF WAVE RECTIFIER
α =30°
R Load

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Output
DC
voltage

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Output DC voltage

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Output DC voltage

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10. Dr.A.Ravi, Francis Xavier Engineering College,Tirunelveli
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The maximum average or dc output voltage is obtained at a delay
angle α = 0 and is given by
Where Vm is the peak phase voltage.
And the normalized average output voltage is

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RMS
output
voltage

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RMS
output
voltage

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THREE PHASE HALF WAVE RECTIFIER
α =60°
R Load
α >30°

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α >30°

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THREE PHASE HALF WAVE RECTIFIER R-L Load
α =30°
α =60°
α =90°

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