Title :
Isolated boost circuit for power factor correction
Author :
Yang, Eric X. ; Jiang, Yimin ; Hua, Guichao ; Lee, Fred C.
Abstract :
To provide a 48 volt DC bus for distributed power systems, AC-DC power converters with high power factor and isolation are required. Instead of using a conventional two stage scheme which has a boost front end followed by a DC-DC converter, a boost derived topology is chosen to achieve high power factor, isolation, and voltage step down. A newly proposed technology of soft switched insulated gate bipolar transistors (IGBTs) is used for this application to reduce the IGBT switching loss and achieve low conduction loss. The design considerations of the power stage and the control circuit are provided. A prototype converter is built to show the feasibility of the single stage scheme
Keywords :
insulated gate bipolar transistors; losses; power convertors; power systems; power transistors; switching circuits; 48 V; AC-DC power converters; IGBT; boost; conduction loss; design; distributed power systems; insulated gate bipolar transistors; isolation; power factor correction; power transistors; soft switching; switching loss; voltage step down; AC-DC power converters; Circuit topology; DC-DC power converters; Insulated gate bipolar transistors; Isolation technology; Power factor correction; Power systems; Reactive power; Switching loss; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings 1993., Eighth Annual
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0983-9
DOI :
10.1109/APEC.1993.290630
