A novel PWM technique in digital control and its application to an improved DC/DC converter

Author

Peng, Li ; Kong, Xuejuan ; Kang, Yong ; Chen, Jian

Author_Institution

Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

254

Abstract

One problem with microprocessor-based high-frequency PWM power converters is resolution limitation caused by the hardware timer. In this paper, a novel PWM technique-double PWM-is proposed. DPWM combines the advantages of low frequency modulating and high frequency switching in power conversion, and effectively increases the resolution in digital control. Theoretical analysis and features are verified on a boost-buck converter with an improved control scheme

Keywords

DC-DC power convertors; PWM power convertors; digital control; harmonic distortion; microcomputer applications; power conversion harmonics; switching circuits; voltage control; DC/DC power converter; boost-buck converter; digital control PWM technique; digital control resolution; double PWM technique; hardware timer; high frequency switching; improved control scheme; low frequency modulating; microprocessor-based high-frequency PWM converters; power conversion; resolution limitation; DC-DC power converters; Digital control; Frequency conversion; Frequency modulation; Hardware; Pulse width modulation; Pulse width modulation converters; Signal resolution; Space vector pulse width modulation; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954029

Filename

954029