分布式电源中变速恒频风力发电的模糊滑模控制

Fuzzy Sliding Mode Control of Variable-Speed Wind Power System

该文首先详细讨论了应用Booster-Buck型AC/DC整流器的变速恒频永磁风力发电机组的仿射非线性模型,由于变速恒频风力发电系统模型的非线性,且模型参数会跟随运行状态的改变而发生变化等问题,一般的线性控制方法误差较大,鲁棒性不强。这里应用模糊滑模控制方法,设计了风能最优跟踪控制器,仿真和实验表明该方法是有效的。

This paper discusses the nonlinear control problem for variable-speed wind energy conversion systems including a booster-buck AC /DC rectifier. Due to the stochastic operating conditions and the inevitable uncertainties inherent in the system, linear control method comes at the price of poor system performance and low reliability. So, it first develops a detailed model of variable-speed wind energy conversion system, which incorporates a distributed generation and then applies the sliding mode incorporating fuzzy tuning schemes designing controller for robust performance of optimizing the generator converter system efficiency. Analysis and experiment show that the method is able to achieve satisfactory wind energy tracking.