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基于九开关级联的多端口能馈型高压变换器
A regenerative multi-port high-voltage converter with nine-switch cells
投稿时间:2017-07-24  修订日期:2017-09-20
DOI:
中文关键词:  九开关  级联变换器  多端口  再生能量  能量回馈
英文关键词:nine-switch  cascade converter  multi-port  regenerative energy  energy feedback
基金项目:The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)
作者单位E-mail
查晓明 武汉大学电气工程学院 xmzha@whu.edu.cn 
王盼 1 武汉大学电气工程学院 2.湖北省电力公司技术培训中心 wangpan6712063@163.com 
刘飞 武汉大学电气工程学院 lf_dyj@whu.edu.cn 
宫金武 武汉大学电气工程学院 gtmobile@foxmail.com 
孙建军 武汉大学电气工程学院 jjsun@whu.edu.cn 
黄萌 武汉大学电气工程学院 meng.huang@whu.edu.cn 
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中文摘要:
      为解决工业现场中高压大容量电机群负荷的驱动及再生能量利用问题,本文提出一种基于九开关逆变器单元级联的多端口能量回馈型高压变换器。通过对比现有三相桥式逆变器级联技术,分析出适用于九开关逆变器的级联方法。文中详细分析了新变换器拓扑结构、功率分配模式、控制策略及优缺点对比,并以6单元级联双负载端口的6kV高压变换器为例,通过Matlab仿真验证了该拓扑及控制策略的可行性和有效性。该变换器为负载端口间的再生能量提供了直接传递通道,降低了能量回馈压力;且大幅减少了开关、电容以及变压器绕组数量,提高可靠性;其端口扩展灵活,对于多负荷工况具有较强的适应性。
英文摘要:
      In order to drive multiple motors in the medium-voltage high-power industrial field and recycle the regenerative energy, a regenerative multi-port converter is presented, which is cascaded with several cells based on nine-switch inverter. By comparing the existing cascaded technology of three-phase bridge inverter, a cascaded method suitable for nine-switch inverter is proposed. Then, the new converter topology, control strategy and comparison are analyzed. A 6 kV two output-ports cascade converter with six nine-switch cells is taken as an example, which has been tested in MATLAB/Simulink. The simulation results demonstrate the effectiveness of the proposed converter and control strategies. The converter provides a direct transfer path for regenerative energy among multi-port loads, and the number of switches, capacitors, and transformer windings are reduced, which can improve reliability. Moreover, the number of output-port can be extended flexible, so the converter is well-adapted to the multi-loads industrial fields.
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