| 永磁同步风力发电机组的不对称故障穿越控制策略 |
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| 引用本文： | 杜雄,戴朋岑,李珊瑚,周雒维.永磁同步风力发电机组的不对称故障穿越控制策略[J].重庆大学学报(自然科学版),2013,36(1):62-68. |
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| 作者姓名： | 杜雄 戴朋岑 李珊瑚 周雒维 |
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| 作者单位： | 重庆大学 输配电装备及系统安全与新技术国家重点实验室,重庆,400044 |
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| 基金项目： | 教育部新世纪人才计划项目(NCET-09-0839)；全国优秀博士论文作者专项基金项目（200948）；重庆市自然科学基金计划资助项目(CSTC2009BB6036)；输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709210) |
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| 摘 要： | 永磁同步风力发电机组在不对称电网故障下运行,将导致并网电流不对称、畸变,直流母线电压上升并含有2倍工频纹波等问题.为了提高永磁同步风力发电机组在不对称电网故障下的穿越能力,提出一种PMSG机组的控制策略:在网侧换流器的控制中采用电网负序电压前馈的方法来消除并网电流负序分量；在机侧换流器的控制中提出了一种新的发电机电磁功率跟踪控制思想,使发电机的输出功率跟踪网侧换流器的输出功率,消除了不对称故障情况下直流母线电压的2倍工频纹波和限制直流侧电压上升,避免直流母线电压波动超出电容电压的额定值.1 MW机组的仿真结果表明,所提出的控制策略可实现不对称故障穿越,验证了所提出控制策略的有效性.
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| 关 键 词： | 永磁 不对称故障 故障穿越 控制方法 |
An asymmetric fault ride-through control strategy for PMSG wind turbine |
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| DU Xiong,DAI Pengceng,LI Shanhu and ZHOU Luowei.An asymmetric fault ride-through control strategy for PMSG wind turbine[J].Journal of Chongqing University(Natural Science Edition),2013,36(1):62-68. |
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| Authors: | DU Xiong DAI Pengceng LI Shanhu and ZHOU Luowei |
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| Institution: | State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China |
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| Abstract: | In order to improve the asymmetric fault ride-through capability of PMSG wind turbine, a novel control method is proposed. This method can reduce the negative sequence current component in the grid side converter and eliminate the 2 nd order voltage fluctuation in the DC link capacitor voltage of the AC-DC-AC converter. The proposed control method employs the grid voltage feed forward to reduce the grid side negative sequence current component, while a novel power control concept, output power of generator tracking the grid side power, is applied to control the electro-magnetic power of the PMSG to eliminate the 2 nd order voltage ripple in the DC link. Simulation results for a 1 MW case study show that the control method can eliminate the grid side negative sequence current component and the 2 nd order voltage ripple in the DC link at the same time. |
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| Keywords: | permanent magnet unbalanced fault fault ride-through control method |
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