级联H桥变流器的波动电压生成控制策略

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摘要提出一种针对级联H桥变流器的新型波动有效值反馈控制策略,它以输出电压滑动窗有效值为反馈量,以波动信号滑动窗有效值为参考量,对输出电压进行控制。对波动电压控制策略进行建模与分析,并给出一种参数设计方法。最后,在“35 kV-6 MW”样机上进行的工业现场实验充分验证了所提出控制方法的有效性和可行性。根据现场实验结果,波动电压的幅值相对误差可达到2%以下。

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	李宇飞
	王跃
	吴金龙
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	张建
	姚为正

关键词 ：级联H桥, 有效值反馈控制, 波动电压

Abstract：This paper presents a novel fluctuating rms value feedback control (FRFC) for the cascaded H-bridge (CHB) converter,which uses the output voltage sliding window rms value as the feedback variable and the fluctuating signal sliding window rms value as the reference for voltage control.The proposed strategy can easily set the controller parameter,has high accuracy in the output voltage fluctuation and frequency,and is suitable for high voltage and power applications in real industry.Modeling and analysis of the FRFC is elaborated in this paper.A parameter design method is proposed as well.Finally,the field experimental results on the 35 kV-6 MW wind turbine testing prototype sufficiently verify the feasibility and effectiveness of the proposed FRFC.According to the experimental results,the relative error of the fluctuating output voltage is less than 2% by utilizing the proposed FRFC.

Key words： Cascaded H bridge fluctuating voltage rms value feedback control

收稿日期: 2014-12-14 出版日期: 2015-05-22

PACS:

TM46

基金资助:国家高技术研究发展计划(“863”计划)(2012AA050206)和新世纪优秀人才支持计划资助项目

通讯作者: 李宇飞男,1987年生,博士研究生,研究方向大功率并网变流器、模块化级联型多电平变流器在电能质量和柔性直流输电系统中的应用。

作者简介: 李宇飞男,1987年生,博士研究生,研究方向大功率并网变流器、模块化级联型多电平变流器在电能质量和柔性直流输电系统中的应用。王跃男,1972年生,博士,教授,博士生导师,主要研究方向为电力传动、电能质量、风力发电、柔性交流输电和电力电子装置。

引用本文:

李宇飞, 王跃, 吴金龙, 冯宇鹏, 张建, 姚为正. 级联H桥变流器的波动电压生成控制策略[J]. 电工技术学报, 2015, 30(9): 46-52. Li Yufei , Wang Yue , Wu Jinlong , Feng Yupeng , Zhang Jian , Yao Weizheng. Control Strategy for Fluctuating Voltage Generation in Cascaded H Bridge Converters. Transactions of China Electrotechnical Society, 2015, 30(9): 46-52.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I9/46

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