| 电压不平衡时风电系统中基于双同步变换的锁相环设计 |
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| 引用本文： | 田桂珍,王生铁,林百娟,王志和.电压不平衡时风电系统中基于双同步变换的锁相环设计[J].电气传动,2010,40(7). |
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| 作者姓名： | 田桂珍 王生铁 林百娟 王志和 |
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| 作者单位： | 内蒙古工业大学,信息工程学院,内蒙古,呼和浩特,010051 |
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| 基金项目： | 内蒙古自治区高等学校科学技术研究重点项目 |
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| 摘 要： | 快速准确地锁定正序基波电压分量的相位和频率是保证风力发电系统中网侧变换器、静止无功补偿装置安全可靠运行的基础.针对基于单dq坐标变换的锁相环在电压不平衡和畸变时动态过程较差等问题,提出一种基于解耦双同步参考坐标变换的锁相环设计方法,通过双dq变换和解耦计算检测出不平衡电网电压中正序分量和负序分量,从而消除电压不平衡的影响.在电压不平衡、电压畸变、频率突变和单相接地情况下进行了仿真和实验研究,结果验证了所提方法的正确性和有效性.
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| 关 键 词： | 锁相环 不平衡电压 同步参考坐标 |
Design of Phase Locked Loop Based on Double Synchronous Reference Frame under Unbalance Grid Voltage in Wind Power Systems |
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| TIAN Gui-zhen,WANG Sheng-tie,LIN Bai-juan,WANG Zhi-he.Design of Phase Locked Loop Based on Double Synchronous Reference Frame under Unbalance Grid Voltage in Wind Power Systems[J].Electric Drive,2010,40(7). |
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| Authors: | TIAN Gui-zhen WANG Sheng-tie LIN Bai-juan WANG Zhi-he |
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| Affiliation: | TIAN Gui-zhen,WANG Sheng-tie,LIN Bai-juan,WANG Zhi-he(College of Information Engineering,Inner Mongolia University of Technology,Hohhot 010051,Nei Monggol,China) |
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| Abstract: | In order to assure grid side converter and the static reactive compensator in wind power systems of running safely and reliably under unbalanced grid voltage,it is the basic requirement that the phase and frequency of the positive sequence fundamental component of grid voltage are obtained quickly and accurately.Because the dynamic behavior of the phase locked loop system based on the single synchronous reference frame(SSRF SPLL) is dissatisfactory,a software phase locked loop based on double synchronous re... |
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| Keywords: | phase locked loop unbalanced voltage synchronous reference frame(SRF) |
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