辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2020, Vol. 40 ›› Issue (3): 74-82.DOI: 10.3969/j.issn.1672-6952.2020.03.014

• 信息与控制工程 • 上一篇    下一篇

新型三相三电平光伏逆变器开路故障检测与容错控制的研究

潘斌1， 王有政2,3， 陈明明1， 赵勇4， 于晶贤1   

  1. 1.辽宁石油化工大学 理学院，辽宁 抚顺 113001； 2.辽宁石油化工大学 信息与控制工程学院，辽宁 抚顺 113001； 3.辽宁石油化工大学 石油化工过程控制国家级实验教学示范中心，辽宁 抚顺 113001； 4.中国海洋大学 数学科学学院，山东 青岛 266000
  • 收稿日期:2019-07-18 修回日期:2019-08-23 出版日期:2020-06-29 发布日期:2020-07-06
  • 作者简介:潘斌（1981?），男，博士，副教授，从事计算机图形学和信息可视化、复杂系统故障检测与容错控制的研究；E?mail：panbin@lnpu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(61602228、61572290)。

Research on Open⁃Circuit Fault Detection and Fault⁃Tolerant Control of Three⁃Phase Three⁃Level PV Inverters

Pan Bin1， Wang Youzheng2,3， Chen Mingming1， Zhao Yong4， Yu Jingxian1   

  1. 1.College of Science, Liaoning Shihua University，Fushun Liaoning 113001，China； 2.School of Information and Control Engineering, Liaoning Shihua University，Fushun Liaoning 113001，China； 3.National Experimental Teaching Demonstration Center of Petrochemical Process Control Liaoning Shihua University，Fushun Liaoning 113001，China； 4.College of Mathematical Sciences, Ocean University of China,Qindao Shandong 266000，China
  • Received:2019-07-18 Revised:2019-08-23 Published:2020-06-29 Online:2020-07-06

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摘要： 为提高三电平光伏逆变器运行的可靠性，提出基于改进型电流流通路径开路故障检测和电压空间矢量冗余容错控制方法。首先，以三相三电平光伏逆变器拓扑结构为基础，详细地分析了各部分功率器件发生开路故障后电路电流流通路径，利用流过钳位二极管和负载的电流以及开关器件的切换状态进行故障检测，通过短时间内注入欠励磁无功电流对故障类型进行分类。然后，从理论上探索不同位置的功率器件发生开路故障后逆变器电压空间矢量的变化情况。根据逆变器故障后电压空间矢量的分布规律和逆变器自身的冗余矢量完成容错控制。提出的方法无需额外的硬件成本和复杂的计算，故障检测和容错控制速度快。最后，搭建一台额定功率为10 kW的样机验证提出方法的有效性和可靠性。

关键词: 故障检测, 　容错控制, 　光伏逆变器, 　三电平, 　开路故障, 　电压空间矢量

Abstract: In order to improve the operation reliability of the three⁃level PV inverter, an open⁃circuit fault detection and a voltage space vector redundancy fault⁃tolerant control method based on the improved current flow path were proposed. First, based on the three⁃phase three⁃level PV topology structure, the circuit current flow path after the open⁃circuit fault of each partial power device was analyzed in detail, the fault detection could be carried out by the current size flowing through the clamping diode and the load, the switching state of the switching device, and the fault type could be classified by injecting the under⁃excitation reactive current in a short time. Then, the change of the voltage space vector of the inverter after the open⁃circuit fault of the power device in different positions was theoretically explored. And the fault⁃tolerant control was completed according to the distribution law of the voltage space vector after the inverter fault and the redundancy vector of the inverter. The proposed method was fast in fault detection and fault⁃tolerant control without additional hardware cost and complex calculation. Finally, a prototype with rated power of 10 kW was built to verify the effectiveness and reliability of the proposed method.

Key words: Fault detection, Fault?tolerant control, PV inverter, Three?level, Open?circuit fault, Voltage space vector

引用本文

潘斌, 王有政, 陈明明, 赵勇, 于晶贤. 新型三相三电平光伏逆变器开路故障检测与容错控制的研究[J]. 辽宁石油化工大学学报, 2020, 40(3): 74-82.

Pan Bin, Wang Youzheng, Chen Mingming, Zhao Yong, Yu Jingxian. Research on Open⁃Circuit Fault Detection and Fault⁃Tolerant Control of Three⁃Phase Three⁃Level PV Inverters[J]. Journal of Liaoning Petrochemical University, 2020, 40(3): 74-82.

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