Title :
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
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;
Conference_Titel :
Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the
Conference_Location :
Osaka
Print_ISBN :
0-7803-7156-9
DOI :
10.1109/PCC.2002.998153
