Analysis and compensation of the output voltage imbalance in a four-switch half-bridge PFC

Author

Ou, Sheng-Yuan ; Ho, Chin-Tse ; Li, Jui-Chih ; Yang, Chung-Yen

Author_Institution

Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan

fYear

2011

fDate

5-8 Dec. 2011

Firstpage

139

Lastpage

143

Abstract

This paper provides the compensation strategies of the output voltage imbalance on the four-switch half-bridge (HB) power factor corrector (PFC). Conventionally, the imbalance compensation is achieved by PWM switching control in four-switch HB PFC. But, the output voltage imbalance compensation will be failure while the imbalance phenomenon excesses a threshold to limit the load range in the four-switch HB PFC. To enlarge the desired range of load variation, a dc component is injected in the input current to eliminate the output voltage imbalance further as the load varies to be not modulated with conventional PWM. By the integrated control strategy, the results of output voltage imbalance and power factor will be discussed and verified with experiments.

Keywords

PWM power convertors; compensation; power factor correction; switching convertors; time-varying systems; voltage control; DC component; PWM switching control; four-switch half-bridge PFC; four-switch half-bridge power factor corrector; integrated control strategy; output voltage imbalance compensation strategy; Capacitors; Inductors; Pulse width modulation; Reactive power; Switches; Voltage control; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on

Conference_Location

Singapore

ISSN

2164-5256

Print_ISBN

978-1-61284-999-7

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2011.6147237

Filename

6147237