基于DSVM直接转矩控制的风力机实时模拟系统

Wind Turbine Real-time Simulation Based on Discrete Space Vector Modulation Direct Torque Control

为解决实验室无法用真实风力机研究风力发电的相关技术问题,提出了用先进的直接转矩控制(DTC)策略控制异步电机模拟风力机特性的技术。设计了风机转矩的计算方法,及异步电机直接转矩控制系统,使其跟随风机转矩变化,进一步利用离散空间矢量调制(DSVM)技术改善了系统的低速性能,并在RT-LAB仿真平台下对所设计的风力机模拟系统进行了实时仿真,验证了系统稳定性好,准确性高的特点,为实验室内研究风力发电技术提供了一个良好的方案。

To solve the problem that was difficult to research the related technology of wind power generation in the laboratory,a technique,adopting the advanced direct torque control（DTC） strategy to control an induction motor,was proposed to simulate the wind turbine.The calculation method of wind turbine torque characteristics and DTC of induction motor were designed to follow the changes of wind turbine torque.Discrete space vector modulation（DSVM） was used to improve the low speed performance of the system.Further,the simulation results in RT-LAB real-time simulation platform verify that the designed wind turbine system presents good stability and high reliability.Thus,it provides a good way to research the wind power generation in the laboratory.