Design and Implementation of a Low-Voltage Photovoltaic System Integrated with Battery Energy Storage

Author:

He Xiao12,Hashimoto Seiji1,Jiang Wei3ORCID,Liu Jicheng2,Kawaguchi Takahiro1ORCID

Affiliation:

1. Division of Electronic and Informatics, Gunma University, Kiryu 376-8515, Japan

2. School of Electrical Engineering and Automation, Changshu Institute of Technology, Suzhou 215506, China

3. Department of Electronic Engineering, Yangzhou University, Yangzhou 225127, China

Abstract

In this paper, the simulation and design of a power converter suitable for a low-voltage photovoltaic (PV) battery energy storage converter was investigated. The converter was suitable for sources and loads with near voltage levels and were aimed at efficiency improvement. The converter was called a series partial power converter (SPPC). A continuous current and a boost SPPC topology based on an isolated Cûk converter was constructed. The operation modes of the converter were analyzed. The efficiency verification test of the SPPC in a laboratory environment was completed using an outdoor start-up test, a photovoltaic full cover test and a steady-state operation test under different power levels. The results show that the SPPC can achieve 95–98% converter efficiency within the 87 W–242 W power range. The incremental conductance method based on the SPPC can realize the dynamic MPPT under constant illumination and changing meteorological conditions.

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

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