分析了风力机和直流电动机的运行原理,给出了直流电动机模拟风力机的理论依据.提出了实现简单、特性优良的转速、转矩控制模拟方案,通过控制直流电动机电枢电流来实现风力机转矩特性的模拟.搭建了基于风力机特性模拟的直驱式变速恒频风力发电系统试验平台,实现了模拟风力机在不同风速、转速下系统的稳定运行状态,验证了模拟方案的可行性和正确性,满足了该风力发电系统并网逆变和最大风能追踪等方面实验室研发的需要.%The operation principle of wind turbine and DC-motor was analyzed, theory based on imitation wind turbine characteristics in DC-motor was found. A simple and effective scheme was proposed based on the speed and torque, which imitated the torque characteristics of wind turbine by controlling the armatur current of DC-motor. A direct-driven type wind power system platform based on wind turbine characteristics imitation was set up, It could imitate the operation states when wind turbine operated in different wind velocity and different rotor speed, the correctness and feasibility of the imitation schemes was verified, which satisfied the research need in laboratory conditiond of the wind power system for tracking the maximum wind energy and grid-connected inverter.
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