A control strategy for PV stand-alone applications

Tunisia-Japan Symposium: R&D of Energy and Material Sciences for Sustainable Society

能源学;材料科学;政治学;社会学

Slouma, S.^1,2 ; Baccar, H.^1

Technopôle Borj Cédria, Centre de Recherche et de Technologie de l'Energie, LR10CRTEn01 Laboratoire Photovoltaïque, Tunis

2050, Tunisia^1

Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, LR11ES15 Laboratoire de Systèmes Electriques, Tunis

1002, Tunisia^2

关键词: Battery energy storage systems;    DC-DC buck converter;    Energy technologies;    Low-leakage current;    Maximum Power Point Tracking;    Photovoltaic modules;    Photovoltaic systems;    Standalone applications;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/596/1/012010/pdf
DOI  :  10.1088/1742-6596/596/1/012010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper proposes a stand-alone photovoltaic (PV) system study in domestic applications. Because of the decrease in power of photovoltaic module as a consequence of changes in solar radiation and temperature which affect the photovoltaic module performance, the design and control of DC-DC buck converter was proposed for providing power to the load from a photovoltaic source.In fact, the control of this converter is carried out with integrated MPPT (Maximum Power Point Tracking) algorithm which ensures a maximum energy generated by the PV arrays. Moreover, the output stage is composed by a battery energy storage system, dc-ac inverter, LCL filter which enables higher efficiency, low distortion ac waveforms and low leakage currents. The control strategy adopted is cascade control composed by two regulation loops.Simulations performed with PSIM software were able to validate the control system.The realization and testing of the photovoltaic system were achieved in the Photovoltaic laboratory of the Centre for Research and Energy Technologies at the Technopark Borj Cedria. Experimental results verify the effeciency of the proposed system.