FFT analysis of the composite PWM voltage source inverter

Author

Harada, Katsuhiko ; Nonaka, Sakutaro

Author_Institution

Dept. of Electr. & Comput. Eng., Kinki Univ., Fukuoka, Japan

Volume

3

fYear

2002

fDate

2002

Firstpage

1257

Abstract

This paper describes a FFT analysis of the composite PWM voltage source inverter (VSI). The VSI has the normal single-phase bridge circuit and an additional arm. The composite PWM method contributes to reduce the ripple in the AC output current. The VSI has a LC series-resonance circuit tuned to twice the utility frequency connected in parallel with the smoothing capacitor Also, the smoothing capacitor is drastically reduced The smooth DC current is obtained by using the resonance circuit tuned to twice the AC source frequency

Keywords

DC-AC power convertors; Fourier analysis; PWM invertors; bridge circuits; fast Fourier transforms; harmonic analysis; harmonic distortion; power conversion harmonics; resonant power convertors; AC output current ripple reduction; AC source frequency; FFT analysis; LC series-resonance circuit; VSI; composite PWM voltage source inverter; single-phase bridge circuit; smoothing capacitor; utility frequency; Bridge circuits; Capacitors; Frequency; Pulse width modulation; Pulse width modulation inverters; RLC circuits; Resonance; Smoothing methods; Tuned circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the

Conference_Location

Osaka

Print_ISBN

0-7803-7156-9

Type

conf

DOI

10.1109/PCC.2002.998153

Filename

998153