Novel Random-Harmonic Elimination PWM Technique for Single-Switch Three-Phase AC-DC Buck Converter

Author

Tan, Guang-Hui ; Ma, Wenchuan ; Ji, Yanchao ; Yu, Hongxiang ; Xu, Wancai

Author_Institution

Dept. of Electr. Eng., Harbin Inst. of Technol.

Volume

1

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

5

Abstract

A novel PWM technique for single-switch three-phase AC-DC buck converter is proposed to reject input voltage fluctuation, obtain high quality output voltage and realize open-loop operation mode. By controlling the duty cycle of the switch which tracks the change of input voltage, the energy supplied by AC mains and the energy consumed in load can keep invariable in every switching cycle. So the output DC voltage maintains at a constant value and random-harmonic voltage contained in input stage is eliminated. Based on the principle of energy conservation, the system operation is analyzed and the control strategy is introduced in detail both in discontinuous conduction mode (DCM) and continuous conduction mode (CCM). Experimental results are provided to show its validity and feasibility

Keywords

AC-DC power convertors; PWM power convertors; harmonics suppression; power conversion harmonics; switching convertors; CCM; DCM; PWM technique; continuous conduction mode; discontinuous conduction mode; energy conservation; random-harmonic elimination; single-switch three-phase AC-DC buck converter; Buck converters; Control system analysis; Control systems; Energy conservation; Open loop systems; Pulse width modulation; Pulse width modulation converters; Switches; Voltage control; Voltage fluctuations; buck converter; continuous conduction mode; discontinuous conduction mode; energy conservation; harmonic elimination;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4778059

Filename

4778059