| 引用本文: | 武稼祥,张国澎,艾永乐,等.一种改进的模块化SVG并联交错调制方式[J].电力系统保护与控制,2019,47(8):26-33.[点击复制] |
| WU Jiaxiang,ZHANG Guopeng,AI Yongle,et al.An improved modular SVG parallel interleaving modulation method[J].Power System Protection and Control,2019,47(8):26-33[点击复制] |
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| 摘要: |
| 针对模块化SVG系统交错并联调制时存在较大的电流总谐波畸变率(THD)的问题，提出了一种改进的模块化SVG并联交错调制方式。首先，根据该交错并联电路结构，分析交错并联系统的电流纹波，推导出交错并联系统最大电流纹波输出的计算公式。其次，将改进的交错并联调制方式与传统的交错并联方式进行对比，得出改进方式在抑制纹波等方面优于传统方式。最后，通过Matlab/Simulink进行仿真，实验验证所提的改进的模块化SVG并联交错调制方式的可行性和有效性。结果表明，这种交错并联方式在较低的开关频率下，效果十分明显，为低频、小电流的交错并联系统提供了应用基础。 |
| 关键词: 交错并联 电流纹波 THD SVG 开关频率 |
| DOI：10.7667/PSPC180510 |
| 投稿时间：2018-05-03修订日期：2018-11-15 |
| 基金项目:国家自然科学基金项目资助(51777060) |
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| An improved modular SVG parallel interleaving modulation method |
| WU Jiaxiang,ZHANG Guopeng,AI Yongle,JIANG Zhibin,LIU Zhongyin |
| (College of Electrical Engineering and Automation, Henan University of Technology, Jiaozuo 454000, China;Zhoukou Power Supply Company, Zhoukou 466000, China) |
| Abstract: |
| An improved modular SVG parallel interleaving modulation method is proposed to solve the problem of large current Total Harmonic Distortion (THD) when interleaving parallel modulation of modular SVG system. Firstly, the current ripple of the interleaving parallel system is analyzed according to the structure of the interleaving parallel circuit, and the calculation formula of the maximum current ripple output of the interleaving parallel system is derived. Secondly, the improved interleaving parallel modulation method is compared with the traditional interleaving parallel method, and the improved method is superior to the traditional method in many aspects such as suppressing ripple, etc. Finally, the method proposed is verified by Matlab/Simulink simulation experiments to check the feasibility and effectiveness of the improved modular SVG parallel interleaving modulation. The results show that this interleaving parallel mode is very effective at lower switching frequencies, and it can be used in the field of low frequency and low current interleaving parallel systems. This work is supported by National Natural Science Foundation of China (No.51777060). |
| Key words: interleaving parallel current ripple THD SVG switching frequency |
