非理想电网电压下基于重复补偿器的三相PWM整流器控制

王超; 牛小兵; 朱景伟; 苏大勇

doi:10.16411/j.cnki.issn1006-7736.2019.02.013

大连海事大学学报 >

2019 , Vol. 45 >Issue 2: 93 - 100

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.02.013

船舶与海洋工程

非理想电网电压下基于重复补偿器的三相PWM整流器控制

王超 ,
牛小兵 ,
朱景伟 ,
苏大勇

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(大连海事大学船舶电气工程学院，辽宁大连 116026)

王超（1991 — ），男，硕士生，E-mail：1263254596@qq.com.

收稿日期: 2019-01-08

修回日期: 2019-02-22

网络出版日期: 2019-02-22

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Three-phase PWM rectifier control under non-ideal grid voltage based on repetitive compensator

WANG Chao ,
NIU Xiao-bing ,
ZHU Jing-wei ,
SU Da-yong

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（Marine Electrical Engineering College, Dalian Maritime University, Dalian 116026, China）

Received date: 2019-01-08

Revised date: 2019-02-22

Online published: 2019-02-22

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摘要

在具有谐波且不平衡的非理想电网电压下，采用常规控制的三相PWM整流器会产生畸变的交流电流和波动的直流母线电压，这会进一步恶化电网的运行状况，同时造成母线上后级设备性能的下降.针对这一问题，本文结合叠加定理和重复控制原理，提出一种新的控制策略.该方法通过双参考坐标系下功率控制调节基波电流、重复补偿器控制各次谐波电流，从而达到正弦化的交流电流以及平滑的直流母线电压的控制目标.实验表明，本文方法具有优异的性能.

关键词： 三相脉宽调制(PWM); 整流器; 重复控制; 谐波抑制; 直接功率控制

本文引用格式

王超 , 牛小兵 , 朱景伟 , 苏大勇 . 非理想电网电压下基于重复补偿器的三相PWM整流器控制[J]. 大连海事大学学报, 2019 , 45(2) : 93 -100 . DOI: 10.16411/j.cnki.issn1006-7736.2019.02.013

Abstract

Under the non-ideal grid voltage with harmonic and unbalanced, the three-phase PWM rectifier with conventional control will produce distorted AC current and fluctuating DC bus voltage, which will further deteriorate the operation status of the grid and cause the performance degradation of the postbus equipment. To solve this problem, a new control strategy was proposed by combining the superposition theorem and the repetitive control principle. According the proposed control strategy, the fundamental current was regulated by power control in double reference frame, and the harmonic current was controlled by repetitive compensator, so as to achieve the control objectives of sinusoidal AC current and smooth DC bus voltage. Experiments show that the proposed method has excellent performance.

Key words： three-phase pulse width modulation(PWM); power rectifier; repetitive control; harmonic suppression; direct power control

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