【摘要】 基于直流电机驱动低速永磁同步发电机的风力发电模拟平台,提出了一种各种风速下最大风能捕获(MPPT)新型实现方法,即由上位机模拟风场,基于最佳叶尖速比(TSR)控制永磁发电机的转速,直接控制直流电动机的功率来模拟风力机捕获的最大风能。基于这种控制策略,对各种风速下的永磁发电机无速度传感器控制、变桨距控制、最大风能的单位功率因数并网控制进行了仿真;在额定风速以下,进行了发电机侧MPPT实验。仿真和实验结果验证了这种永磁直驱风力发电MPPT新策略的正确性和可行性。更多还原

【Abstract】 A novel method of Maximum Power Point Tracking(MPPT) implementation under various wind speeds was proposed based on an experimental wind generation imitation platform including a Permanent Magnet Synchronous Generator (PMSG) driven by DC-motor.i.e.the wind field imitation is implemented by the upstream computer,and the PMSG speed is controlled based on the optimal tip speed ratio(TSR) control strategy,and then the maximum power captured from the wind filed is imitated by directly controlling the DC motor’s output power.The simulation including the PMSG speed sensorless control,variable pitch control,grid-connection with unit power factor control was effectively implemented; under the rated wind speed,the generator-side MPPT experiment was completed.The simulation and experimental results have effectively verified the validity and feasibility of the novel MPPT strategy proposed.更多还原