中国电机工程学报2016，Vol.36Issue(22)：6210-6219,10.DOI:10.13334/j.0258-8013.pcsee.152726
电网不平衡下MMC多变量保护控制器参数设计研究
Design and Analysis of Control Parameter for Multi-variable Flexible Control in MMC Under Unbalanced AC Grid Conditions
摘要
Abstract
In the grid-connected modular multilevel converters (MMCs) system, grid faults not only cause the quality deterioration of grid currentswhich may lead the MMC to shut down, but also bring unbalanced problems to the arm voltages. In this paper, a multi-variable protected control method which was employed ind-q coordinate was presented. Considering the permitted maximum of three-phase current, the permitted capacitor voltage ripple and the maximum reactive power set-point, the calculation of the parameterk was given respectively. The converter mathematical models which were based on the laws of Kirchhoff and energy balance were given first. Then the relationship between the system requirements, such as the maximum current and the permitted capacitor voltage ripple, and the parameterk was derived. Furthermore, the design principles of parameterk were deduced. Finally, the simulating results from real time digital simulator (RTDS), and the experimental results from a scaled-down MMC prototype were presented to verify the theoretical analysis.关键词
模块化多电平变流器/电网不平衡/多变量灵活控制/参数设计/安全运行Key words
multi-modular converter (MMC)/unbalanced grid voltages/multi-variable flexible control/parameter design/safety operation分类
信息技术与安全科学引用本文复制引用
朱明琳,杭丽君,李国杰,解大,李文伟..电网不平衡下MMC多变量保护控制器参数设计研究[J].中国电机工程学报,2016,36(22):6210-6219,10.基金项目
国家863高技术基金项目(2015AA050103)；上海市自然科学基金项目(14ZR1422200)；台达环境教育基金会《电力电子科教发展计划》(DREG2015005)。The National High Technology Research and Development of China 863 Program(2015AA050103) （2015AA050103）
The Natural Science Foundation of Shanghai Science and Technology Commission (14ZR1422200) （14ZR1422200）
The Power Electronics Science and Education Development Program of Delta Environmental & Education Foundation (DREG2015005) （DREG2015005）
