N-phase PWM with Minimum Common-Mode Voltage

• Main Authors: Meng-Sheng Hsieh, 謝孟昇
• Other Authors: Keng-Yuan Chen
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/00366198887710357533

碩士 === 元智大學 === 電機工程學系 === 104 === This paper extend two reduced common-mode pulse-width modulation (RCMV-PWM) methods active zero-state pulse-width modulation(AZSPWM) and near-state pulse-width modulation(NSPWM) from three phase voltage-source inverter to five phase and seven phase. These methods use different switch sequence to achieve the minimum common mode voltage, and compare with standard pulse-width modulation, such as space vector pulse-width modulation(SVPWM). There are more and more choice of switch sequence which produce different common mode voltage in the case of five phase and seven phase, and still choose the minimum common mode voltage from the switch sequence. By incorporating different switching sequences, the proposed method can reduce common mode voltage under the same average switching frequency as compared with SVPWM. Both simulations and experiments confirm the theoretical derivations of the proposed modulator.