High-Power-Factor Boost Rectifier with a Passive Energy Recovery Snubber

  • Kim, Marn-Go (Department of Control and Instrument. Eng., Puckyong National University) ;
  • Baek, Seung-Ho (Department of Control and Instrument. Eng., Puckyong National University)
  • Published : 1998.10.01

Abstract

A passive energy recovery snubber for high-power-factor boost rectifier, in which the main switch is described in terms of the equivalent circuits that are operational during turn-on and turn-off sequences. These equivalent circuits are analyzed so that the overshoot voltage across the main switch, the snubber current, and the turn-off transition time can be predicted analytically. The main switch combined with proposed snubber can be turned on with zero current and turned off at limited voltage stress. The high-power-factor boost rectifier with proposed snubber is implemented, and the experimental results are presented to confirm the validity of proposed snubber.

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