| 基于SVM的级联型高压变频器共模电压抑制研究 |
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| 引用本文： | 杨振宇,曹敏珠,倪喜军,赵剑锋.基于SVM的级联型高压变频器共模电压抑制研究[J].高压电器,2010,46(3). |
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| 作者姓名： | 杨振宇 曹敏珠 倪喜军 赵剑锋 |
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| 作者单位： | 1. 常州供电公司,江苏,常州,213003
2. 东南大学电气工程学院,江苏,南京,210096 |
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| 基金项目： | “十一五”国家科技支撑计划重点项目(2007BAA12B03)国家科技支撑计划资助电能质量复合控制技术及装置2007BAA12B03;;江苏省重点科技攻关项目(BE2006003);;“东南大学优秀青年教师教学科研计划”资助(4016001009) |
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| 摘 要： | 为消除级联型高压变频器输出共模电压,针对其特殊结构,提出左右桥臂组概念,并采用两电平SVM,将两参考矢量的相差调整为2π/3。由于级联型结构每层均能输出3种电平,可挑选共模电压为0的三电平矢量进行调制。该两种SVM通过错时采样技术,平滑应用于级联型高压变频器,并可完全抑制其共模电压。仿真和实验结果都证明了这两种SVM的有效性。
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| 关 键 词： | 级联型逆变器 两电平SVM 三电平SVM 错时采样 共模电压 |
Eliminating Common-mode Voltage of Cascaded High Voltage Inverter Based on Support Vector Machine |
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| YANG Zhen-yu,CAO Min-zhu,NI Xi-jun,ZHAO Jian-feng.Eliminating Common-mode Voltage of Cascaded High Voltage Inverter Based on Support Vector Machine[J].High Voltage Apparatus,2010,46(3). |
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| Authors: | YANG Zhen-yu CAO Min-zhu NI Xi-jun ZHAO Jian-feng |
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| Affiliation: | 1.Changzhou Power Supply Company;Changzhou 213003;China;2.School of Electrical Engineering;Southeast University;Nanjing 210096;China |
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| Abstract: | To eliminate common-mode voltage of cascaded multi-level inverter,a concept of left and right legs is proposed according to the special structure of the converter.Each leg adopts 2-level support vector machine(SVM),and the phase difference between their reference vectors is set 2π/3.As every cascade of cascaded inverter can output 3-level voltages,3-level vectors with zero common-mode voltage are used for modulation.These two SVMs can be smoothly used in cascaded high-voltage inverter via staggered sampling time to completely eliminate common-mode voltage.The results of simulation and experiment verify the effectiveness of the proposed SVMs. |
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| Keywords: | cascaded inverter 2-level SVM 3-level SVM staggered sampling time common-mode voltage |
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