A new single phase buck-boost converter with unity power factor

Author

Ghanem, M.C. ; Al-Haddad, K. ; Roy, G.

Author_Institution

Ecole de Technol. Superieure, Montreal, Que., Canada

fYear

1993

fDate

2-8 Oct 1993

Firstpage

785

Abstract

A novel cascade buck-boost power convertor topology that offers a high degree of power factor correction is proposed. Low-frequency harmonic elimination in the input current is achieved and the power factor is improved to over 99% at power levels of 500 W in typical applications using very simple control circuitry. The buck mode has the same performance as the boost mode. A broad range of output voltage and output power is obtained with unity power factor. The analysis performed and the design equations presented should enable the design to be adapted to a wide range of output power. The effect of the cascade buck-boost inductance and current ripple on the size and efficiency of the converter power stage was taken into consideration. Due to the source impedance and the EMI (electromagnetic interference) filter, the generated high-frequency harmonics do not affect communication systems

Keywords

electromagnetic interference; filters; harmonics; power convertors; power factor correction; 500 W; EMI; HF; LF; analysis; applications; cascade buck-boost power convertor topology; current ripple; design equations; efficiency; filters; harmonic elimination; inductance; output power; output voltage; performance; power factor correction; power stage; single phase; size; source impedance; unity power factor; Circuit topology; Converters; Electromagnetic interference; Performance analysis; Power factor correction; Power generation; Power harmonic filters; Power system harmonics; Reactive power; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE

Conference_Location

Toronto, Ont.

Print_ISBN

0-7803-1462-X

Type

conf

DOI

10.1109/IAS.1993.298988

Filename

298988