针对风力机特性模拟中电动机转矩控制较难实现的问题,提出一种转速调节模拟法风力机模拟器.该模拟器基于开关磁阻电机调速系统,DSP中实时采集转速和负载转矩信号,求解风力机模型,参考转速提供给开关磁阻电机调速系统实时跟踪.针对转速调节模拟法,建立误差模型以衡量模拟步长和转速对模拟误差的影响.针对开关磁阻电机的实时转速控制问题,依据模糊控制策略,设计模糊PI转速调节器,实现实时控制.将开关磁阻电机调速系统整定成典型Ⅱ型系统以确定模拟步长.固定风速变负载和变风速最大风能跟踪下的实验结果表明,该模拟器转速随动性能良好,能够输出期望风力机功率.%A wind turbine simulator (WTS) realized by speed regulation of motor instead of the traditional torque control method is presented in the paper, which is hard to realize. The simulator was based on switched reluctance drive (SRD). DSP implemented the wind turbine model with the acquisition of speed and load torque data. It provided the reference speeds for SRD to track. An error model was established and the simulation error for speed regulation WTS was analyzed. A fuzzy logic conbined PI controller for SRD was designed, then it was set to be typical Ⅱ system to determine the simulation step. The experimental results indicate that the WTS has a good tracking performance. It outputs the expected power in constant wind velocity and variable wind velocity under maximum power point tracing(MPPT) control.
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