Title :
Power factor preregulators with improved dynamic response
Author :
Spiazzi, Giorgio ; Mattavelli, Paolo ; Rossetto, Leopoldo
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
fDate :
3/1/1997 12:00:00 AM
Abstract :
An improved control strategy of standard power factor preregulators (PFPs) 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 works well with a universal input voltage range. Experimental tests on a boost power converter with average current control confirm the validity of the approach
Keywords :
DC-DC power convertors; control system analysis; control system synthesis; dynamic response; harmonic distortion; power factor correction; power system harmonics; voltage control; analog circuitry; average current control; boost power converter; control design; control simulation; control strategy; dynamic response improvement; experimental tests; intrinsic low-frequency output voltage ripple compensation; multiplier; output voltage control loop bandwith; output voltage response; power factor preregulators; universal input voltage range; Bandwidth; Circuits; Current control; Frequency; IEC standards; Phase estimation; Phase locked loops; Reactive power; Topology; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
