Title :
Voltage waveform synthesis of a three-phase multilevel converter with an additional single-phase converter for voltage shaping
Author :
Oguchi, Kuniomi ; Maki, Yasuomi
Author_Institution :
Fac. of Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
The waveform synthesizing methods for a new type three-phase five-level converter are proposed. Method A can produce quasi 18-step voltage waveforms with total harmonic distortion (THD) of 10.67%, but can not control the neutral point voltage of the DC output. Method B can produce voltage waveforms with THD of 10.42% and can control the neutral voltage, but the converter voltages contain relatively larger lower-harmonics. Either method can be used according to circumstances. The predicted results were verified by the simulated and experimental results
Keywords :
PWM power convertors; harmonic distortion; power system harmonics; voltage control; DC output; PWM power converters; five-level converter; neutral point voltage control; quasi 18-step voltage waveforms; single-phase converter; three-phase multilevel converter; total harmonic distortion; voltage shaping; voltage waveform synthesis; Capacitors; Circuits; Frequency conversion; Predictive models; Pulse width modulation; Pulse width modulation converters; Switching converters; Switching frequency; Thyristors; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377535
