Research on Close-Loop Current Control Method of Operational Test Circuit for MMC Valves

被引：0

作者：

Xu B. ^{[1
]}

Gao C. ^{[1
]}

Yang J. ^{[2
]}

Wang X. ^{[3
]}

Wang G. ^{[2
]}

Zhou J. ^{[3
]}

机构：

[1] Global Energy Interconnection Research Institute, Changping District, Beijing

[2] State Key Laboratory of Advance Power Transmission Technology, Changping District, Beijing

[3] Beijing Key Laboratory of High Power Electronic, Changping District, Beijing

来源：

Dianwang Jishu/Power System Technology | 2017年 / 41卷 / 12期

关键词：

Circuit current; Control method; MMC; Operational test;

D O I：

10.13335/j.1000-3673.pst.2017.1985

中图分类号：

学科分类号：

摘要：

Modular multilevel converter (MMC) must pass operational test before field operation to check whether its design meets engineering requirements. According to IEC standards, in operational test, the same current stress as the counterpart under actual operation condition need to be generated qualitatively and quantitatively. In traditional ways, open-loop control method is commonly used to control the current in test circuit and its control accuracy and equivalence both need to be improved. For this purpose, close-loop control methods for direct current, fundamental current and second harmonic current in H-model operational test topology are proposed in this paper. By adopting the methods, above mentioned current components can track their reference values accurately and rapidly, so that the current stress generated in the test is equivalent to the counterpart under actual operation condition. Finally, simulation and experiment verify correctness and effectiveness of the proposed control methods. © 2017, Power System Technology Press. All right reserved.

引用

页码：3809 / 3815

页数：6

共 16 条

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