引用本文: | 马星河,任 鑫,闫炳耀,等.抑制三电平矩阵变换器共模电压调制策略[J].电力系统保护与控制,2020,48(21):49-57.[点击复制] |
MA Xinghe,,REN Xin,YAN Bingyao,et al.Strategy of reducing the common mode voltage modulation of a three-level matrix converter[J].Power System Protection and Control,2020,48(21):49-57[点击复制] |
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摘要: |
与传统AC-DC-AC功率变换器相比,矩阵变换器作为一个通用的功率变换装置,能够轻易实现N个相位到M个相位的变换。矩阵变换器可以产生理想的输入输出波形、没有中间储能环节、能量双向流动、快速的动态响应等优点。三电平矩阵变换器能够提高电压传输效率、实现多电平电压波形输出、突破电压传输比0.866的限制。针对三电平矩阵变换器调制过程中存在的共模电压问题,提出了基于电容钳位三电平矩阵变换器的改进空间矢量调制算法,根据不同的调制系数选择不同的调制策略,能够将三电平矩阵变换器的共模电压减小到最小。通过实验和仿真平台验证该简化策略的可行性和正确性。 |
关键词: 三电平矩阵变换器 共模电压抑制 空间矢量调制 调制系数 |
DOI:DOI: 10.19783/j.cnki.pspc.191451 |
修订日期:2020-02-12 |
基金项目:河南省自然科学基金项目资助(182300410280); 国家重点研发计划课题资助(2016YFC0600906) |
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Strategy of reducing the common mode voltage modulation of a three-level matrix converter |
MA Xinghe,,REN Xin,YAN Bingyao,MA Yaguang,XU Dan |
(1. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China;
2. State Grid Jiaozuo Power Supply Company, Jiaozuo 454000, China) |
Abstract: |
Compared with the conventional AC-DC-AC power converter, the matrix converter can easily realize the transformation of N phases to M phases as a general power conversion device. The matrix converter can produce ideal input and output waveforms, no intermediate energy storage links, two-way energy flow, and fast dynamic response, etc. The three-level matrix converter can improve voltage transmission efficiency, realize multi-level voltage waveform output, and break through the voltage transmission ratio of 0.866 for the common mode voltage problem in the modulation process of a three-level matrix converter. In this paper, an improved space vector modulation algorithm based on a capacitive clamped three-level matrix converter is proposed, and different modulation strategies are selected according to different modulation indices. The common mode voltage of the three-level matrix converter can be minimized. The feasibility and correctness of the simplified strategy are verified by experiments and simulation platforms.
This work is supported by Natural Science Foundation of Henan Province (No. 182300410280) and National Key Research and Development Program of China (No. 2016YFC0600906). |
Key words: three-level matrix converter common mode voltage suppression space vector modulation modulation coefficient |