基于直流电动机电流闭环控制的风力机特性模拟

Characteristic Simulation of Wind Turbine Based on DC Motor Closed-loop Current Control

风能是一种无污染、可再生的绿色能源.开发风能,大力发展风力发电是解决世界能源危机的一个行之有效的途径.风力机模拟是在实验室环境下研究风力发电的前提.本文首先分析了风力机的功率、转矩特性,指出风力机模拟的要求在于模拟转矩-转速特性.针对现有风力机模拟方法的不足,提出一种基于BUCK调速电路的直流电动机电流闭环控制的模拟方法.并进行了模拟试验,模拟结果与风力机理论曲线吻合,表明该方法是一种简单可行的风力机模拟方法.

Since wind power is a pollution-free, renewable source of energy, wind-power generation is an effective approach to solving energy crisis worldwide. Wind power can be completed by aid of wind turbine simulation in a laboratory. This paper analyzed the power and torque characteristics of wind turbine, demonstrating that wind turbine simulation consists in the characteristics of simulation torque and speed. Based upon the defects of the present wind turbine simulation approach, this paper puts forward a new method of simulation the closed-loop current control of DC motor based on BUCK Speed-Ad- justment circuit. Simulation experiments were carried out, the result of which was consistent with theoretical curve, indicating that DC Motor closed-loop current control is an easy and feasible wind turbine simulation.