【摘要】 全功率变流器是直驱风力发电系统的重要组成部分,可将发电机发出的能量更好地并网。这里对直驱并网变流器主电路的设计进行了研究,包括电网网侧滤波器和电机侧滤波器的设计及计算、共模电压的消除。最后,基于网侧和机侧的控制理论和所提出的设计方案,利用Matlab对其控制方法进行了仿真,并通过1.5 MW直驱风力发电机组并网变流器样机的实验平台进行了互馈实验,实验结果证明了设计方法的可行性。更多还原

【Abstract】 This paper studies the main circuit of the direct-driven grid-converter.Power supply circuit design of content includes the design method of line-side LCL filter and the generator-side du/dt filter,the elimination of common mode voltage,the brake unit,the pre-charging circuit and the control system.Finally,based on the control theory and the design scheme,simulating the control methods using Matlab,and through the experiments of the full-scale power con-verter for 1.5 MW permanent magnet direct-driven wind turbine,it demonstrates that the design method is feasible.更多还原