Harmonic Current Depression for Medium Voltage Three-level Wind Power Converter with Active Damping Control

被引：0

作者：

Ma, Zhijun ^{[1
]}

Zhou, Linyuan ^{[1
]}

Liu, Jinjun ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian, Peoples R China

来源：

2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020) | 2020年

关键词：

Active damping; harmonic depression; three-level converter; LCL-FILTERED INVERTER; DESIGN; RESONANCE;

D O I：

10.1109/apec39645.2020.9124232

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Medium voltage three-level wind power converter is a good choice for the next generation 10-MW wind turbine. However, since switching frequency of medium voltage semiconductor device is strictly limited, harmonic current is hard to depress, especially for LCL type wind power converter. This paper presents an effective way to eliminate resonance current under low switching frequency. Active damping strategy, instead of passive damping, is adopted here. Detailed system model is built, which shows the converter harmonic terminal voltage, generated by the PWM section, introduces considerable the resonance harmonic current. To guarantee system stability, a negative proportion gain is used in the active damping feedback loop. According to the system model, a low pass filter is also adopted in the converter current feed-back loop, where harmonic current depression performance is greatly improved. Experimental results validate the theoretical analysis.

引用

页码：3271 / 3275

页数：5

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