Open Access

ARTICLE

Adaptive Predefined-Time Backstepping Control for Grid Connected Photovoltaic Inverter

by Jiarui Zhang¹, Dan Liu^2,*, Kan Cao², Ping Xiong², Xiaotong Ji³, Yanze Xu¹, Yunfei Mu¹

1 Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China
2 State Grid Hubei Electric Power Research Institute, Wuhan, 430077, China
3 State Grid Hubei Electric Power Co., Ltd., Wuhan, 430077, China

* Corresponding Author: Dan Liu. Email:

Energy Engineering 2024, 121(8), 2065-2083. https://doi.org/10.32604/ee.2024.050342

Received 03 February 2024; Accepted 10 April 2024; Issue published 19 July 2024

Abstract

The system performance of grid-connected photovoltaic (PV) has a serious impact on the grid stability. To improve the control performance and shorten the convergence time, a predefined-time controller based on backstepping technology and dynamic surface control is formulated for the inverter in the grid-connected photovoltaic. The time-varying tuning functions are introduced into state-tracking errors to realize the predefined-time control effect. To address the “computational explosion problem” in the design process of backstepping control, dynamic surface control is adopted to avoid the analytical calculations of virtual control. The disturbances of the PV system are estimated and compensated by adaptive laws. The control parameters are chosen and the global stability of the closed-loop is ensured by Lyapunov conditions. Simulation results confirm the effectiveness of the proposed controller and ensure the predefined time control in the photovoltaic inverter.

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Keywords

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