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用于大型DFIG风电场的混合型HVDC系统中整流器的建模与控制

, PP. 224-232

Keywords: 风电场,高压直流输电,混合型HVDC,整流器,双馈发电机

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Abstract:

针对DFIG风电场-混合型HVDC系统,建立了dq坐标系下整流器子系统的状态空间标准模型。根据逆变器子系统采用的不同控制模式,定量分析了整流器子系统的有功、无功电流的动态特性,由此推导出用于控制的整流器子系统近似动态模型。基于该模型,设计了整流器子系统双闭环控制器。最后,采用Matlab/Simulink进行仿真,仿真验证了整流器子系统动态特性分析的正确性,同时,基于SimPowerSystems环境对“DFIG风电场-混合型HVDC系统”进行了仿真,结果表明,所提出的整流器控制方案能有效提高HVDC系统对风电场输出电流的跟踪能力。

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