| 引用本文: | 柳明,陈亚军,林宏健,魏斌,舒泽亮.单相三电平H桥两模块级联变换器的一维均压SVPWM算法[J].电力自动化设备,2018,(3): |
| LIU Ming,CHEN Yajun,LIN Hongjian,WEI Bin,SHU Zeliang.One-dimensional SVPWM algorithm with voltage balancing capability of single-phase three-level two-cell cascaded H-bridge converter[J].Electric Power Automation Equipment,2018,(3): |
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| 摘要: |
| 针对两模块级联多电平变换器，提出一种利用冗余矢量实现均压的一维空间矢量脉宽调制算法。该算法根据当前作用矢量计算得到下一时刻的作用矢量，矢量的变化是在相邻矢量间进行选择，保证了端口电平不会发生越级跳变的现象，并同时保留所有冗余矢量，最终输出均压能力最强的矢量。给出了均压算法的实现过程，并分析了该算法无越级跳变的矢量变化路径。通过MATLAB/Simulink仿真和小容量实验对算法进行了验证，结果证明了该算法的正确性和可行性，系统动静态性能良好。 |
| 关键词: 单相三电平H桥级联变换器 多电平 均压 SVPWM 冗余矢量 |
| DOI：10.16081/j.issn.1006-6047.2018.03.015 |
| 分类号:TM46 |
| 基金项目:国家自然科学基金面上项目(51377004) |
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| One-dimensional SVPWM algorithm with voltage balancing capability of single-phase three-level two-cell cascaded H-bridge converter |
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LIU Ming, CHEN Yajun, LIN Hongjian, WEI Bin, SHU Zeliang
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School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
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| Abstract: |
| A one-dimensional space vector pulse width modulation algorithm is proposed for the two-cell cascaded multi-level converter, using redundant vectors to realize voltage equalizing. The next-time working vector is calculated according to the current working vector. The change of vector follows the adjacent vector selection rule, which avoids the leapfrog hopping of the port level. According to the method, all the redundant vectors are retained and the final chosen output vector has the strongest equalizing ability. The implementation process of the equalizing algorithm is introduced, and the vector conversion path without leapfrog hopping is analyzed. Results of MATLAB/Simulink simulations and experiments verify the correctness and feasibility of the proposed algorithm, and the system has excellent dynamic and static performance. |
| Key words: single-phase three-level cascade converters multi-level equalizing SVPWM redundant vector |
