A fully soft-switched extended-period quasi-resonantpower-factor-correction circuit |
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| Authors: | Hui S.Y.R. Cheng K.W.E. Prakash S.R.N. |
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| Affiliation: | Dept. of Electr. Eng., Sydney Univ., NSW; |
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| Abstract: | This paper presents the design criteria, procedure, and implementation of a soft-switched power-factor-correction (PFC) circuit based on the extended-period quasi-resonant (EPQR) principles. All power electronic devices including switches and diodes in the circuit are fully soft switched. The design method is demonstrated in a prototype circuit. The operating principles are confirmed with computer simulation and experimental results. A comparison of the EP-QR operation and zero-voltage-transition (ZVT) pulse-width modulation (PWM) method |
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