Power factor preregulators with improved dynamic response

G. Spiazzi

doi:10.1109/63.558761

1997-03-01

PRE

G. Spiazzi *

Paolo Mattavelli

L. Rossetto

DOI：10.1109/63.558761

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摘要

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An improved control strategy of standard power factor preregulators (PFP's) is proposed, which allows fast output voltage response while maintaining a high power factor. This is obtained by compensating for the intrinsic low-frequency output voltage ripple, thus allowing a higher bandwidth of the output voltage control loop. This method does not require additional sensing, but only a multiplier and simple analog circuitry, and it works well with a universal input voltage range. Experimental tests on a boost converter with average current control confirm the validity of the approach.

Keyword:

control technique

power factor preregulator

ripple compensation