| 基于电网虚拟磁链的变速恒频风力发电机柔性并网技术 |
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| 引用本文： | 战杰,张彦,刘其辉,赵义术.基于电网虚拟磁链的变速恒频风力发电机柔性并网技术[J].电力自动化设备,2009,29(12). |
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| 作者姓名： | 战杰 张彦 刘其辉 赵义术 |
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| 作者单位： | 1. 山东电力研究院,山东,济南,250002
2. 华北电力大学电气与电子工程学院,北京,102206 |
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| 基金项目： | 国家自然科学基金项目，山东电力集团公司重大科技项目 |
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| 摘 要： | 利用双馈风力发电机与电网的"柔性连接"特性,基于合理的转子侧交流励磁控制可实现发电机柔性并网.在推导双馈风力发电机空载数学模型基础上,提出了电网虚拟磁链的概念,给出了柔性并网中双PWM励磁变换器的控制方法:基于电网虚拟磁链定向的机侧变换器矢量控制策略和基于电网电压定向网侧变换器矢量控制策略.设计了具有初始磁链估计、不需电压传感器的虚拟电网磁链观测器,该观测器实现简单,精度较高.实验研究表明,柔性并网技术安全稳定,电流冲击小,满足双馈风力发电机的变速恒频运行需要.
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| 关 键 词： | 交流励磁 变速恒频 风力发电 电网虚拟磁链 并网 柔性 |
Flexible grid-connection technology based on grid virtual flux linkage for VSCF wind generator |
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| ZHAN Jie,ZHANG Yan,LIU Qihui,ZHAO Yishu.Flexible grid-connection technology based on grid virtual flux linkage for VSCF wind generator[J].Electric Power Automation Equipment,2009,29(12). |
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| Authors: | ZHAN Jie ZHANG Yan LIU Qihui ZHAO Yishu |
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| Affiliation: | ZHAN Jie~1,ZHANG Yan~1,LIU Qihui~2,ZHAO Yishu~1 (1.Sh,ong Electrical Power Research Institute,Ji'nan 250002,China,2.College of Electrical , Electronics Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | According to the characteristics offlexible connectionbetween DFIG(Doubly-Fed Induction Generator) and grid,the flexible grid - connection of generator is achieved by valid AC excitation of rotor.The mathematic model of DFIG with no-load is deduced and the concept of grid virtual linkage is put forward. The control scheme of back-to-back PWM converter for grid - connection is analyzed,which includes the grid virtual linkage oriented vector control strategy of rotor - side converter and the grid voltage orie... |
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| Keywords: | AC-excitation VSCF wind power generation grid virtual flux linkage grid-connection flexibility |
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