Title :
Three-phase multilevel-voltage source converters with low switching frequencies and less distorted input voltages
Author :
Oguchi, Kuniomi ; Maki, Yasuomi ; Sunaga, Yoshinori
Author_Institution :
Dept. of Electr. & Electron. Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
A novel three-phase power converter which is suitable for high-voltage, high-power applications is proposed. This converter consists of a neutral-point-clamped (NPC) converter with a switching frequency at the power line frequency as the main power circuit, and an additional single-phase converter with a switching frequency at triple the power line frequency. This paper describes the operating principle, analysis, and synthesis of the input voltage waveforms in a single- and a double-converter system, as well as experimental results
Keywords :
power convertors; switching circuits; additional single-phase converter; double-converter system; high-power applications; high-voltage; less distorted input voltages; low switching frequencies; main power circuit; neutral-point-clamped converter; operating principle; power line frequency; single-converter system; switching frequency; three-phase multilevel-voltage source converters; voltage waveforms; Circuits; Energy storage; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Switching frequency; Thyristors; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
