| 基于三电平SVPWM调制的Vienna整流器中点电压均衡控制 |
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| 引用本文： | 肖梁乐,陈昌松,王涛,段善旭.基于三电平SVPWM调制的Vienna整流器中点电压均衡控制[J].电源学报,2017,15(5):80-86,107. |
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| 作者姓名： | 肖梁乐 陈昌松 王涛 段善旭 |
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| 作者单位： | 华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室, 武汉 430074,华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室, 武汉 430074,华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室, 武汉 430074,华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室, 武汉 430074 |
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| 基金项目： | 国家自然科学基金资助项目（51477067）；光宝电力电子技术科研基金资助项目（PRC20161047） |
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| 摘 要： | Vienna整流器的中点电压振荡问题会造成直流侧电容电压分布不均,导致交流侧输入电流波形畸变,开关器件承受电压不一致而损坏等问题。针对Vienna整流器中点电压不平衡的问题,研究了三电平空间矢量调制对Vienna整流器中点电压产生的影响。首先介绍了Vienna整流器的工作原理,然后分析了空间矢量对中点电压的影响,并基于SVPWM调制提出了一种中点电压波动的抑制策略。最后,搭建了15 kW实验样机,验证了所提控制策略的有效性,解决了中点电压不平衡的问题,明显改善了输入电流波形质量。
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| 关 键 词： | Vienna整流器 中点电压不平衡 三电平空间矢量调制 |
| 收稿时间： | 2017/5/29 0:00:00 |
| 修稿时间： | 2017/7/20 0:00:00 |
Neutral-point Voltage Balancing Control of Vienna Rectifier Based on Three-level Space Vector Pulse Width Modulation |
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| XIAO Liangle,CHEN Changsong,WANG Tao and DUAN Shanxu.Neutral-point Voltage Balancing Control of Vienna Rectifier Based on Three-level Space Vector Pulse Width Modulation[J].Journal of power supply,2017,15(5):80-86,107. |
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| Authors: | XIAO Liangle CHEN Changsong WANG Tao and DUAN Shanxu |
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| Affiliation: | State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China,State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China,State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China and State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | The neutral-point voltage imbalance of the Vienna rectifier will cause the capacitor voltage distribution imbalance in DC side, which leads to the ac input current waveform distortion and inconsistent stress of switching devices and so on. In view of the Vienna rectifier neutral-point voltage imbalance, this paper studied the impact of three-level space vector modulation for the neutral-point voltage of Vienna rectifier. Firstly, the working principle of the rectifier is analyzed, and mathematical model is established under dq reference frame. And then, according to the impact of positive and negative small voltage vectors on neutral-point voltage, a neutral-point voltage fluctuation suppression strategy is proposed. In the end, the effectiveness of the proposed strategy is verified on the laboratory prototype. This strategy solves the problem of the neutral-point voltage imbalance, and greatly improves the quality of input current waveform. |
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| Keywords: | Vienna rectifier neutral-point voltage imbalance three-level space vector pulse width modulation (SPWM) |
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