TY  - EJOU
AU  - Zhang, Jiarui 
AU  - Liu, Dan 
AU  - Cao, Kan 
AU  - Xiong, Ping 
AU  - Ji, Xiaotong 
AU  - Xu, Yanze 
AU  - Mu, Yunfei 

TI  - Adaptive Predefined-Time Backstepping Control for Grid Connected Photovoltaic Inverter
T2  - Energy Engineering

PY  - 2024
VL  - 121
IS  - 8
SN  - 1546-0118

AB  - 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.
KW  - Photovoltaic inverter system; backstepping technology; predefined-time control; adaptive control

DO  - 10.32604/ee.2024.050342