损耗功率对异步电动机模拟风力机特性的影响及优化

Influence of Power Loss on Characteristics of Wind Turbine Simulated by Induction Motor and Its Optimization

对于风力发电系统的研究,在实验室条件下,通常采用电动机来模拟风力机。由于电动机存在功率损耗,导致电动机不能准确的模拟风力机,在实验时将影响风力发电机控制,以及风力机最大风能跟踪控制策略的研究。基于异步电动机的矢量控制策略,对其风力机特性的模拟控制策略做出优化,提出考虑损耗功率的异步电动机模拟风力机特性的控制策略。此方法通过MATLAB/Simulink建立精确的异步电动机模型,搭建考虑铜耗、铁耗、机械损耗以及杂散损耗的控制模型,经过仿真验证了优化后的控制策略的正确性。

Research on wind power generation system, which under laboratory conditions, the motor is used to simulate the wind turbine generally. Because of power loss, the motor cannot simulate wind turbine accurately, that will affect the control of wind turbine and the study on the control strategy of maximum wind energy tracking. Based on the vector control strategy of asynchronous motor, optimize the simulation of control strategy of wind turbine characteristics and propose the control strategy of asynchronous motor considering the power loss to simulate the characteristics of wind turbine. This method build a precise model of asynchronous motor by MATLAB/Simulink and set up control model considering copper loss, iron loss, mechanical loss and stray loss. The simulation resuhs verify the accuracy of the optimized control strategy.