| 用于三相级联STATCOM的电压前馈空间矢量调制策略 |
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| 引用本文：余恒洁1,翟少磊2,陈江洪3,曹敏2,朱梦梦2,柳慧梅4,熊兰4.用于三相级联STATCOM的电压前馈空间矢量调制策略[J].电网与清洁能源,2018,34(1):78~83 |
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| 基金项目:国家自然科学基金项目（51507054）；太阳能高效利用湖北省协同创新中心开放基金资助项目（HBSKFMS2014035） |
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| 中文摘要:针对H桥级联型STATCOM的直流电压平衡控制的问题，提出了一种适用于三相级联型STATCOM的基于直流电压前馈的空间矢量调制策略。该调制方法在输出电压矢量合成中根据各单元直流电压和输出电流的方向调整开关矢量组合。既能实现高质量的波形输出，又能自动抑制级联单元的直流电压不平衡，降低了控制器的算法复杂度；最后通过仿真验证了该策略的可行性。 |
| 中文关键词:级联STATCOM 空间矢量调制 电压前馈 |
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| Voltage Feedforward Space Vector Modulation Strategy for Three-Phase Cascaded STATCOM |
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| Abstract:To solve the problem of DC voltage imbalance of H-bridge cascaded STATCOM， a space vector modulation strategy for three-phase cascaded STATCOM based on DC voltage feedforward is proposed in this paper. This modulation strategy proposed selects switching vector combinations according to the cell DC voltages and the direction of the output current to synthesis the required output voltage. This method not only obtains high quality output wave forms， but also automatically suppresses the DC voltage imbalance， thus reduces the complexity of the controller algorithm. Finally， the simulation results verify the feasibility of the proposed strategy. |
| keywords:cascaded STATCOM space vector modulation voltage feedforward |
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