Optimal Pulse Patterns of Nine-Phase Voltage Source PWM Inverter for Triple Three-Phase Wound AC Motor

Hiroshi Takami, Hisao Matsumoto

研究成果: Article査読

抄録

We already described the nine-phase inverter driving system providing both the triple three-phase voltage source inverter with 180 degree conducting period and the AC motor windings with triple three-phase construction. The nine-phase inverter driving system used three small capacity three-phase coupling reactors having special windings for current balance and reduction of higher harmonics. In addition, for voltage control, current balance, and waveform improvement, optimal PWM pulse patterns were applied to the six-phase inverter driving system using a three-phase coupling reactor to provide double three-phase construction. In the system based on the mode in the title, the PWM control was applied to the nine-phase inverter driving system described above. The coupling reactors in the system balance the fundamental currents of three sets of three-phase inverters and also absorb higher harmonic voltages other than 18p∓1 (p=1,2,…) orders. The optimal pulse patterns found by the approach to make the performance index minimum using the Lagrange's multiplier method can be applied to the PWM to reduce the higher harmonic currents greater than those calculated by the modulation method comparing sinusoidal signal wave with triangular carrier signal. This system can have a larger capacity than the six-phase PWM inverter driving system in which coupling reactors absorb higher harmonic voltages other than the 12p±l orders and also improve output current waveforms. In addition, the system includes the capacity of coupling reactors a little lager than the six-phase PWM inverter driving system but enables operation with smaller torque ripples and electromagnetic noises in low to high frequency ranges.

本文言語English
ページ(範囲)345-354
ページ数10
ジャーナルIEEJ Transactions on Industry Applications
112
4
DOI
出版ステータスPublished - 1992
外部発表はい

ASJC Scopus subject areas

  • 産業および生産工学
  • 電子工学および電気工学

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