| 不对称故障下双馈风力发电系统网侧变流器的控制方法 |
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| 引用本文： | 喻冲,宋平岗,刘鹏,李辉.不对称故障下双馈风力发电系统网侧变流器的控制方法[J].变流技术与电力牵引,2011(1). |
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| 作者姓名： | 喻冲 宋平岗 刘鹏 李辉 |
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| 作者单位： | 华东交通大学电气与电子工程学院; |
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| 摘 要： | 风力发电机组通过背靠背变流器与电网相连接,电压发生不对称故障时直流侧电压将发生大幅波动,而要消除这方面的影响,关键在于对网侧电流的控制。针对电网电压不对称故障下风电机组的表现,文章提出了一种适用于该情况下的网侧变流器的控制策略,以实现风电机组的低电压穿越。对发生不对称故障时网侧变流器的状态进行分析,得出其控制指令,使用Matlab/Simulink建立仿真模型,给出A相电压发生50%跌落下的仿真结果,验证了该控制策略的可行性。
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| 关 键 词： | 电网电压不对称跌落 低电压穿越 网侧变流器 双馈电机 |
Control Method of DFIG Grid-side Converter under Asymmetric Grid Voltage Drop |
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| YU Chong,SONG Ping-gang,LIU Peng,LI Hui.Control Method of DFIG Grid-side Converter under Asymmetric Grid Voltage Drop[J].Converter Technology & Electric Traction,2011(1). |
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| Authors: | YU Chong SONG Ping-gang LIU Peng LI Hui |
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| Institution: | YU Chong,SONG Ping-gang,LIU Peng,LI Hui(School of Electrical and Electronic Engineering,East China Jiaotong University,Nanchang,Jiangxi 330013,China) |
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| Abstract: | DFIG is connected with the grid by Back-to-Back converter.The DC-side voltage will fluctuate widely under the asymmetric fault of grid voltage.Therefore,controlling the grid-side current is the key method to eliminate the influence.Aiming to the performance of DFIG under the asymmetric fault of grid voltage,a control method of grid-side converter is proposed for realizing low-voltage ride-through of wind turbines.The state is also analyzed,and then the control instruction is obtained.Furthermore,the simulat... |
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| Keywords: | asymmetric grid voltage drop LVRT(low-voltage ride-through) grid-side converter DFIG(Doubly Fed Induction Generator) |
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