A Novel Three Phase Hybrid Unidirectional Rectifier for High Power Factor Applications

This paper presents a hybrid three phase rectifier for
high power factor application. This rectifier is composed by zero
voltage transition (ZVT) and zero current transition (ZCT) boost
converter with three phase diode bridge rectifier, in parallel with a six
pulse three phase pulse width modulation (PWM) controlled rectifier.
The proposed topology is capable of high power factor with DC
output voltage regulation by providing sinusoidal input. Also, it
increases the overall efficiency of the new hybrid rectifier to 94.56%
and the total harmonic distortion of the hybrid structure varies from
0% to 16% at nominal output power. This topology was simulated in
MATLAB/SIMULINK environment and the output waveforms
presented with experimental result.

• P. Nammalvar
• P. Meganathan

• Hybrid Rectifier
• Total Harmonic Distortion
• Power Quality
• Pulse Width Modulation (PWM)
• Unidirectional Rectifier.

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