基于无刷直流电机的风力机转矩模拟

Torque simulation of wind turbine based on brushless DC motor

针对风力发电技术的研究受到自然条件制约的问题,该文提出了一种新的利用无刷直流电机来代替风力机的模拟方案,通过控制无刷电机直流侧电流的方式实现转矩控制,电流环采用径向基函数神经网络与PI调节相结合的控制策略。利用Matlab/Simulink建立系统仿真模型,并搭建了基于DSP控制的无刷直流电机+永磁发电机的硬件平台,仿真和试验结果都与理论转矩相吻合,并有效降低了无刷电机的转矩脉动。该方法控制简单、精度高,为实际模拟系统的设计提供了一种新的思路。

In order to solve the problem that the study of wind power generation was restricted by nature conditions,this paper proposed a novel simulation scheme by using brushless DC motor instead of wind turbine,the torque imitation was implemented by controlling the DC side current,and the current loop adopted the control method of radial basis function neural network combined with PI control.A system simulation model was built by Matlab/Simulink,and a hardware platform based on brushless DC motor and permanent magnet generator was also established,which was controlled by DSP.Simulation and experimental results were consistent with theoretical torque,and the torque ripple of brushless DC motor was effectively reduced.This control method is simple with high control precision,and can provide a new idea for the design of the simulation system.