Cooperative Control of Online Impedance Spectroscopy Monitoring Method and Maximum Power Point Tracking Method for Photovoltaic Panels - Université de Lorraine Access content directly
Conference Papers Year : 2022

Cooperative Control of Online Impedance Spectroscopy Monitoring Method and Maximum Power Point Tracking Method for Photovoltaic Panels

Abstract

Health monitoring is essential for the photovoltaic (PV) panels to improve the system's efficiency and stability. Existing health monitoring methods are applied either offline or need additional equipment. Impedance spectroscopy (IS) methods can characterize online the internal processes of electrochemical systems with corresponding equivalent circuit model. However, it is rarely used for PV panels. This paper focuses on the online implementation of IS based on existing power converter for real-time health monitoring of PV panels. The injection region and type of perturbation signal for PV panels during IS measuring are analyzed. Based on PV panel's equivalent circuit model, a theoretical analysis of the influence of temperature and irradiance on internal parameters is made. Besides, a cooperative control method of online IS method and maximum power point tracking (MPPT) method is proposed. Even during the IS measuring, the quasi-maximum output power of PV panels can be maintained. The feasibility of the proposed method is verified by both simulation and experiment under different operating conditions.
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Dates and versions

hal-03889589 , version 1 (08-12-2022)

Identifiers

  • HAL Id : hal-03889589 , version 1

Cite

Xin Wang, Zhixue Zheng, Michel Aillerie, Alexandre de Bernardinis, Jean-Paul Sawicki, et al.. Cooperative Control of Online Impedance Spectroscopy Monitoring Method and Maximum Power Point Tracking Method for Photovoltaic Panels. 2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe), Sep 2022, Hannover, Germany. ⟨hal-03889589⟩
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