基于重复和准比例谐振复合的直驱风机网侧变流器控制策略

为了提高电网电压不平衡及畸变条件下永磁直驱同步风电机组的运行性能,提出了一种基于重复控制与准比例谐振控制复合的直驱风机网侧变流器控制策略.该控制策略根据电网电压不平衡条件下变流器控制目标得到电流指令值,在两相静止坐标系下利用复合控制,实现对基频电流的无静差跟踪,并抑制交流电网谐波的干扰.在提出控制系统详细框图的基础上,对各个控制环节的设计方法进行了研究,并评估了控制效果.仿真结果表明,该控制策略在电网电压不平衡及畸变的工况下,能有效抑制有功功率波动,降低电流谐波畸变率,验证了策略的正确性....

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Published in电力系统保护与控制 Vol. 46; no. 8; pp. 95 - 102
Main Authors 徐红灿, 滕予非, 王晓茹
Format Journal Article
LanguageChinese
Published 西南交通大学电气工程学院,四川 成都,610031%国网四川省电力公司电力科学研究院,四川 成都,610072 16.04.2018
Subjects
直驱风机
quasi-proportional resonance control
谐波
harmonics
repetitive control
direct drive wind generator
准比例谐振控制
电网电压不平衡
grid voltage unbalance
重复控制
Online AccessGet full text
ISSN1674-3415
DOI10.7667/PSPC170533

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Abstract 为了提高电网电压不平衡及畸变条件下永磁直驱同步风电机组的运行性能,提出了一种基于重复控制与准比例谐振控制复合的直驱风机网侧变流器控制策略.该控制策略根据电网电压不平衡条件下变流器控制目标得到电流指令值,在两相静止坐标系下利用复合控制,实现对基频电流的无静差跟踪,并抑制交流电网谐波的干扰.在提出控制系统详细框图的基础上,对各个控制环节的设计方法进行了研究,并评估了控制效果.仿真结果表明,该控制策略在电网电压不平衡及畸变的工况下,能有效抑制有功功率波动,降低电流谐波畸变率,验证了策略的正确性.
AbstractList 为了提高电网电压不平衡及畸变条件下永磁直驱同步风电机组的运行性能,提出了一种基于重复控制与准比例谐振控制复合的直驱风机网侧变流器控制策略.该控制策略根据电网电压不平衡条件下变流器控制目标得到电流指令值,在两相静止坐标系下利用复合控制,实现对基频电流的无静差跟踪,并抑制交流电网谐波的干扰.在提出控制系统详细框图的基础上,对各个控制环节的设计方法进行了研究,并评估了控制效果.仿真结果表明,该控制策略在电网电压不平衡及畸变的工况下,能有效抑制有功功率波动,降低电流谐波畸变率,验证了策略的正确性.
Abstract_FL In order to improve the performance of the Permanent Magnet Synchronous Generator (PMSG) under unbalanced and distorted gird voltage operating conditions, a novel Control Strategy Combining Repetitive (REP) control and Quasi-Proportional Resonant (QPR) control is proposed for PMSG grid-side converter. In the proposed control strategy, the current commands are dependent on the objectives of converter control when the grid voltage is unbalanced. The hybrid control strategy is applied in the two-phase stationary reference frame to eliminate the steady-state tracking error on the fundamental frequency current and suppress the total harmonic distortion. The block diagram of control system is presented, and the design methods of each block are studied. Meanwhile, the effect of the control strategy is investigated. Finally, the simulation results show that the proposed control strategy can effectively suppress active power pulsation and reduce the total harmonic distortion under unbalanced and distorted gird voltage operating conditions, verifying the correctness of the strategy.
Author 滕予非
徐红灿
王晓茹
AuthorAffiliation 西南交通大学电气工程学院,四川 成都,610031%国网四川省电力公司电力科学研究院,四川 成都,610072
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Author_FL WANG Xiaoru
TENG Yufei
XU Hongcan
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Keywords 直驱风机
quasi-proportional resonance control
谐波
harmonics
repetitive control
direct drive wind generator
准比例谐振控制
电网电压不平衡
grid voltage unbalance
重复控制
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PublicationTitle 电力系统保护与控制
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PublicationYear 2018
Publisher 西南交通大学电气工程学院,四川 成都,610031%国网四川省电力公司电力科学研究院,四川 成都,610072
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Title 基于重复和准比例谐振复合的直驱风机网侧变流器控制策略
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