基于变速恒频的双馈风力发电控制的研究
首发时间:2012-01-20
摘要:双馈风力发电采用变速恒频发电技术;通过转子侧交直交(AC-DC-AC)变流器,对双馈电机实现功率因数可调的四象限运行。变流器采用机侧、网侧双PWM控制策略和旋转坐标系下电流内环、转速外环以及电压前馈解耦控制;通过Matlab仿真,分析了风机的调速跟踪和抗负载扰动性能,映证了控制策略的有效性。
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Study of Doubly-Fed Wind Power generation Control Strategy Based on Variable Speed Constant Frequency
Abstract:Doubly Fed Induction Generator (DFIG) used in tracking wind power by technology of Variable Speed Constant Frequency(VSCF). Through the rotor side AC-DC-AC converter on DFIG to realize adjustable power factor for four quadrant operation。The converter adopt PWM strategy in rotor side and grid side, using current inner loop, speed outer loop and decoupling control system by voltage feedforward. Simulation by MatLab, the paper analysis the control of speed tracking and disturbances performance, demonstrating the effective control strategy .
Keywords: PWM VSCF wind turbine of DFIG
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