| 电网故障时永磁直驱风电机组的低电压穿越控制策略 |
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| 引用本文： | 姚骏,廖勇,庄凯.电网故障时永磁直驱风电机组的低电压穿越控制策略[J].电力系统自动化,2009,33(12):91-96. |
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| 作者姓名： | 姚骏 廖勇 庄凯 |
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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，重庆市 400044 |
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| 基金项目： | 本文受国家高技术研究发展计划(863计划)项目(2007AA05Z422)和重庆市科委科技计划项目攻关项目(CSTC 2008AB3047) 资助。 |
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| 摘 要： | 为提高永磁直驱风电机组所并电网的运行稳定性，研究电网故障下永磁直驱风电机组的运行特性以及提高其低电压穿越运行能力，文中提出一种适用于采用双脉宽调制变换器并网的永磁直驱风电机组的低电压穿越运行控制方案。通过在电网故障时限制发电机的电磁功率来限制输入至直流侧电容和电网侧变换器的功率，通过在电网故障时采用考虑发电机功率信息的网侧变换器电流闭环控制来实现直流链电压稳定控制，从而有效实现发电系统的低电压穿越运行。系统仿真结果表明，所提出的控制方案无需增加硬件保护装置，在电网对称及非对称故障下均可有效实现永磁直驱风电机组的低电压穿越运行。
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| 关 键 词： | 风力发电 直驱 永磁同步发电机 电网故障 低电压穿越 |
| 收稿时间： | 2008/11/8 0:00:00 |
| 修稿时间： | 6/5/2009 12:28:36 PM |
A Low Voltage Ride-through Control Strategy of Permanent Magnet Direct-driven Wind Turbine Under Grid Faults |
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| YAO Jun,LIAO Yong,ZHUANG Kai.A Low Voltage Ride-through Control Strategy of Permanent Magnet Direct-driven Wind Turbine Under Grid Faults[J].Automation of Electric Power Systems,2009,33(12):91-96. |
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| Authors: | YAO Jun LIAO Yong ZHUANG Kai |
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| Affiliation: | YAO Jun,LIAO Yong,ZHUANG Kai(State Key Laboratory of Power Transmission Equipment & System Security , New Technology,Chongqing University,Chongqing 400044,China) |
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| Abstract: | To improve the stability of power grid with permanent magnet direct-driven wind turbines,the operational characteristics of permanent magnet direct-driven wind turbines under grid faults is studied. A low voltage ride-through (LVRT) control strategy is proposed for the direct-driven wind turbine using a back-to-back pulse-width modulation (PWM) converter. The electromagnetic power of the PMSG is limited under the grid faults to minimize the power transferred to the DC-link capacitor and grid-side converter.... |
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| Keywords: | wind-power generation direct-driven permanent magnet synchronous generator (PMSG) grid faults low voltage ride-through (LVRT) |
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