| 引用本文: | 王汝田,赵艳锋,母兴军,王雪,刘闯.五相双级矩阵变换器共模电压的抑制策略[J].电力自动化设备,2018,(8): |
| WANG Rutian,ZHAO Yanfeng,MU Xingjun,WANG Xue,LIU Chuang.Modulation strategy of common-mode voltage for five-phase two-stage matrix converter[J].Electric Power Automation Equipment,2018,(8): |
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| 摘要: |
| 分析了五相双级矩阵变换器共模电压的产生机理，提出了一种抑制五相双级矩阵变换器共模电压的调制方法。整流级采用空间矢量脉宽调制(SVPWM)方法，在每个输入电压区间内，选择2个最大且极性为正的线电压和零电压来合成输出直流电压；逆变级采用四矢量SVPWM方法，在每个输出电压扇区内，仅选择相邻的2个大矢量和2个中矢量以一定比例来合成参考输出电压矢量，且使得输出不含零电压矢量，并通过调整整流级的调制系数来改变调制比。所提方法在减小共模电压的同时，也减少了开关损耗。 |
| 关键词: 五相双级矩阵变换器 SVPWM 零电压矢量 共模电压 |
| DOI：10.16081/j.issn.1006-6047.2018.08.007 |
| 分类号:TM46 |
| 基金项目:国家重点研发计划基金资助项目(2017YFB0903300) |
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| Modulation strategy of common-mode voltage for five-phase two-stage matrix converter |
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WANG Rutian, ZHAO Yanfeng, MU Xingjun, WANG Xue, LIU Chuang
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School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
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| Abstract: |
| The mechanism of common-mode voltage of five-phase two-stage matrix converter is analyzed. An approach is proposed to reduce the common-mode voltage of five-phase two-stage matrix converter. The SVPWM(Space Vector Pulse Width Modulation) method is adopted at the rectifier stage, and two maximum positive input line voltages and zero voltage are selected to synthetize the DC-link voltage in each input segment. The four-vector SVPWM method is adopted at the inverter stage, and only two maximum and two medium adjacent vectors are selected to synthetize the output reference voltage vector with a certain proportion in each output sector. At the same time, there is no zero voltage vector in the output, and the voltage modulation ratio is regulated by adjusting the modulation factor of rectifier stage. The proposed method not only reduces the common-mode voltage, but also reduces the switching loss. |
| Key words: five-phase two-stage matrix converter SVPWM zero vector common-mode voltage |
