Title :
Improving performance of continuous current mode boost converters for power factor correction
Author :
Zhao, Qun ; Tao, Fengfeng ; Xu, Peng ; Wei, Jia ; Lee, Fred C.
Author_Institution :
Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
The efficiency of continuous current mode (CCM) boost converters for power factor correction (PFC) can be significantly improved and the electromagnetic interference (EMI) can be reduced by alleviating the rectifier reverse recovery problems. This paper proposes a way to alleviate these problems using a coupled winding of the boost inductor to shift the original rectifier current to a new branch and then control the rectifier current turn-off rate utilizing the leakage inductor in the new branch. Methods of applying the same concept to other CCM DC/DC converters are also identified. Design issues are addressed and design procedures are developed. Applying the proposed concept to a 500 W CCM PFC boost converter prototype for universal line application generates 2% efficiency improvement
Keywords :
DC-DC power convertors; electric current control; electromagnetic interference; inductors; interference suppression; power factor correction; rectifying circuits; 500 W; EMI reduction; boost inductor; continuous current mode boost converters; coupled winding; efficiency improvement; electromagnetic interference reduction; performance improvement; power factor correction; rectifier current turn-off rate control; rectifier reverse recovery; Circuits; Electromagnetic interference; Gallium arsenide; Inductors; Power factor correction; Rectifiers; Switches; Thermal management; Thyristors; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954189
