| 引用本文: | 马宏伟,李永东,许 烈.不对称电网电压下双馈风力发电机的控制方法[J].电力自动化设备,2013,33(7): |
| MA Hongwei,LI Yongdong,XU Lie.Control strategy of DFIG under unbalanced grid voltage condition[J].Electric Power Automation Equipment,2013,33(7): |
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| 摘要: |
| 分析了不对称电网电压下双馈风力发电机的运行特性，进而提出一种基于多频点比例积分谐振控制器的矢量控制方法，通过定子侧功率的单闭环结构，实现不对称电网电压下的双馈电机控制。相比于传统的正负序双dq域控制，所提方法既不需要负序dq域控制器，也不需要转子电流内环，控制结构简单。同时，该方法只需对一个简单参数（λ［０，２］）进行调整，即可实现不对称电网电压下双馈风电系统的多种不同控制目标。基于MATLAB／Simulink平台搭建了1.5MW双馈风电仿真平台，仿真结果验证了所提算法的正确性和有效性。 |
| 关键词: 风电 不对称电网电压 双馈发电机 比例积分谐振控制器 控制 |
| DOI： |
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| Control strategy of DFIG under unbalanced grid voltage condition |
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MA Hongwei, LI Yongdong, XU Lie
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School of Electrical Engineering，Tsinghua University，Beijing 100084，China
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| Abstract: |
| The behavior of DFIG（Doubly-Fed Induction wind Generator） under unbalanced grid voltage condition is analyzed and a vector control method based on multi-frequency proportional integral resonant controller is proposed，which applies the single close-loop structure of stator-side power to realize the control of DFIG. Compared with the traditional dual dq-domain control，its control structure is simple，without the PI controller in negative dq domain and the inner loop of rotor current. The multiple control objectives are achieved by conveniently adjusting the only parameter（λ［０，２］）. A 1.5MW DFIG-based wind power system is built with MATLAB／Simulink and the simulative results validate the effectiveness of the proposed method. |
| Key words: wind power unbalanced grid voltage doubly-fed induction generator proportional integral resonant controller control |
