Adaptive integral sliding mode MPPT control for wind turbines with fixed‐time convergence

Author:

Chen Qi1,Wang Lin2,Sun Yong3,Xie Shuzong1ORCID,Wang Ruiliang2

Affiliation:

1. State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou China

2. Technical Center Zhejiang Windey Co., Ltd. Hangzhou China

3. Innovation Research Institute Zhejiang Windey Co., Ltd. Hangzhou China

Abstract

AbstractIn the context of increasing renewable energy penetration and the imperative for efficient utilization, this paper explores the application of maximum power point tracking (MPPT) control for wind turbines. The objective is to optimize wind power generation by maximizing energy capture efficiency while addressing challenges associated with behind‐the‐meter renewables, load flexibility, and encouraging prosumers' participation. This paper proposes an adaptive integral sliding mode MPPT control strategy for wind turbines in the presence of external disturbance and model uncertainties. A new fixed‐time integral sliding mode manifold is constructed, such that the singularity problem can be avoided in the controller design without using any piecewise continuous functions. Then, an adaptive fixed‐time MPPT controller is developed to ensure that the tracking error can converge to a small neighbourhood around zero in fixed time, where the upper bound of the convergence time can be pre‐set based on actual engineering needs by selecting appropriate parameters. By designing update law, no prior knowledge on the upper bound of the lumped uncertainties is required anymore in advance. Stability analysis of the closed‐loop system is conducted using Lyapunov stability theory, and the effectiveness of the proposed strategy is validated through numerical simulations.

Funder

China Postdoctoral Science Foundation

National Natural Science Foundation of China

Publisher

Institution of Engineering and Technology (IET)

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