【摘要】 以背靠背双PWM全功率变换器控制的直驱永磁风力发电系统为研究对象,在传统控制策略的基础上,提出了一种改进型变流器控制策略:机侧变流器采用转子磁链定向控制直流母线电压,网侧变流器通过电网电压定向控制流向电网的功率。由于改进型控制策略中的功率环调节在网侧,其能量转换的效率较传统控制策略高,系统的响应速度加快,动态特性很好,稳态后各项参数的性能也很优越。然后,在Matlab/Simulink环境下对这种控制策略进行了仿真分析,并进一步通过实验验证了该控制策略的有效性和可行性。更多还原

【Abstract】 Direct-drive permanent magnet wind power system has a variety of topology structure and control strategy,and the control strategy of the stand or fall will directly affect the wind power system control effect quality.This thesis mainly discusses direct-driven permanent magnet synchronous wind energy conversion system used back-to-back PWM converter,a new converter control strategy is proposed based on the traditional one.The generator-side converter using rotor flux oriented control DC bus voltage,the grid-side converter through the grid voltage orientation control power.Then,in Matlab/Simulink environment for the control strategy of the simulation analysis,and further through the experiments verify the correctness and feasibility of the control strategy.更多还原