| 引用本文: | 陈思哲,章 云,吴 捷,张 淼.双馈风力发电系统的比例谐振直接电压控制[J].电力自动化设备,2012,32(2): |
| CHEN Sizhe,ZHANG Yun,WU Jie,ZHANG Miao.Proportional-resonant direct voltage control of DFIG wind power generation system[J].Electric Power Automation Equipment,2012,32(2): |
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| 摘要: |
| 提出双馈异步发电机的比例谐振直接电压控制策略，实现双馈风力发电系统的电网同步控制。通过分析双馈异步发电机的数学模型，建立了转子旋转坐标系中转子电压对定子电压的直接控制关系。在转子旋转坐标系中采用比例谐振控制器控制定子电压，以实现对交流电网电压的无静差跟踪。与传统双馈异步发电机的电网同步控制策略相比，提出的控制策略减少了坐标旋转变换的次数，消除了转子电流的测量和控制环节，避免采用受发电机参数影响的前馈补偿控制，从而简化了控制算法，提高了控制系统的鲁棒性。仿真结果表明，提出的控制策略可有效地实现双馈异步发电机的电网同步控制。 |
| 关键词: 风电 发电机 同步 控制 直接电压控制 比例谐振控制 |
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| 基金项目:国家自然科学基金重点资助项目（60534040）；广东省重大科技专项（2009A080304011）；广东省“211工程”资助项目（粤发改［431］） |
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| Proportional-resonant direct voltage control of DFIG wind power generation system |
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CHEN Sizhe1, ZHANG Yun1, WU Jie2, ZHANG Miao1
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1.Faculty of Automation，Guangdong University of Technology，Guangzhou 510006，China;2.Guangdong Key Laboratory of Clean Energy Technology，School of Electric Power，South China University of Technology，Guangzhou 510640，China
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| Abstract: |
| The proportional-resonant direct voltage control is proposed to synchronize the DFIG wind power generation system with grid. The mathematical model of DFIG is analyzed and the relationship for direct control between rotor voltage and stator voltage in rotor rotating coordinates is established. The proportional-resonant controller is applied to track AC network voltage without static error. Compared with traditional network synchronization control of DFIG，the proposed scheme reduces the times of rotating coordinates transformation，avoids the measurement and control of rotor current，and cancels the feed-forward compensation control influenced by generator parameters. The control algorithm is thus simplified and the robustness of control system is improved. Simulative results show that，the proposed control strategy realizes the network synchronization control of DFIG effectively. |
| Key words: wind power electric generators synchronization control direct voltage control proportional-resonant control |
