一种风电机组非奇异快速终端滑模MPPT控制方法

doi:10.16182/j.issn1004731x.joss.201803043

摘要/Abstract

摘要： 为提高双馈风力发电机组的风能捕获效率,设计了一种基于直接速度控制(DSC)的MPPT控制方法。针对传统直接速度控制策略中有效风速难以获得的问题,该方法采用高阶容积卡尔曼滤波(HCKF)和牛顿拉夫逊方法(NR)设计了有效风速估计器;针对转速环响应速度慢的问题设计了以非奇异快速终端滑模面为基础的转速控制器。以2.4 MW风电机组作为研究对象,在快速变化风况激励下,对风电机组的动态响应进行了仿真研究,结果表明改进的控制方法可以准确估计有效风速,与传统控制策略相比可以更好的实现最大功率跟踪。

关键词: 风电机组, MPPT, 高阶容积卡尔曼滤波, 非奇异快速终端滑模

Abstract: In order to improve the energy capture efficiency of doubly-fed induction generator (DFIG), a control method is designed based on direct speed control (DSC) to achieve maximum power point tracking (MPPT). An effective wind speed estimator based on high-degree cubature Kalman filter (HCKF) and Newton-Raphson method (NR) is proposed for solving the difficulty in obtaining effective wind speed using traditional control strategy. A speed controller based on nonsingular fast terminal sliding mode surface is designed to obtain a faster speed response for the speed loop. The numerical simulation research of the 2.4MW wind turbine under rapidly variable wind conditions is carried out. The simulation results show that the improved control method can estimate the effective wind speed accurately and achieve better MPPT compared with the traditional control strategy.

Key words: wind turbine, MPPT, high-degree cubature Kalman filter, nonsingular fast terminal sliding mode control

中图分类号:

TM315

李大中, 邬峰. 一种风电机组非奇异快速终端滑模MPPT控制方法[J]. 系统仿真学报, 2018, 30(3): 1109-1117.

Li Dazhong, Wu Feng. A MPPT Control Method of Wind Turbines with Nonsingular and Fast Terminal Sliding Mode[J]. Journal of System Simulation, 2018, 30(3): 1109-1117.

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