期刊论文

MPPT control with improved integral SMC for D-PMSG wind power generation system

Fang, Yunyi(746148258@qq.com)

中文

电力系统保护与控制

1674-3415

2019

47

13

77-83

10.19783/j.cnki.pspc.180878

This work is supported by Key Project of Hunan Education Department (No. 17A006)

本校为第一且通讯机构

针对永磁直驱风力发电系统的内部参数摄动和外部扰动等问题,基于非线性扩张状态观测器(NLESO)提出了一种实现最大功率跟踪的改进型积分滑模控制方法.该方法使用非线性光滑函数设计了NLESO,对系统的内外扰动等不确定因素进行估计和主动补偿,提高了转速的跟踪能力.引入非线性光滑函数设计了滑模趋近律,消除了传统滑模控制中的高频抖振现象,并基于Lyapunov原理对滑模控制器进行了稳定性分析.仿真结果表明,与传统PI控制相比,该方法不仅响应速度快,无超调无抖振,而且具备良好的抗扰能力,风速突变情况下仍能快速实现最大功率跟踪,在风力发电系统最大功率跟踪控制领域具有较大的应用前景.

Considering the internal parameter perturbation and external disturbances of Direct-driven Permanent Magnet Synchronous Generator (D-PMSG) wind power system, an improved integral Sliding Mode Control (SMC) method based on the Nonlinear Extended State Observer (NLESO) is proposed to achieve Maximum Power Point Tracking (MPPT). NLESO is designed by nonlinear smoothing function, and the disturbances and uncertainty are estimated and compensated by NLESO, which improves the tracking ability of the speed. The sliding mode approach rate is designed b...