Composite Energy Storage System with Photovoltaic Power Generation and Uninterruptible Power Supply Function
Author(s) -
JungMin Kwon
Publication year - 2013
Publication title -
international journal of photoenergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.426
H-Index - 51
eISSN - 1687-529X
pISSN - 1110-662X
DOI - 10.1155/2013/830341
Subject(s) - uninterruptible power supply , rectifier (neural networks) , islanding , photovoltaic system , inverter , thyristor , electrical engineering , maximum power point tracking , energy storage , power (physics) , power optimizer , ac adapter , boost converter , engineering , power factor , computer science , electronic engineering , distributed generation , voltage , renewable energy , physics , stochastic neural network , quantum mechanics , machine learning , recurrent neural network , artificial neural network
A composite energy storage system (CESS) that includes a photovoltaic (PV) power generation and an uninterruptible power supply (UPS) function is proposed. This system has three operating modes, namely, a grid-connected inverter mode, a grid-connected rectifier mode, and an islanding mode. This system is composed of a boost converter, a three-phase inverter/rectifier, a bidirectional DC/DC converter, and thyristor switches. The boost converter extracts maximum power from the PV panels and sends it to the DC-link. The bidirectional DC/DC converter is connected between the battery and the DC-link, which leads to an optimized charging/discharging operation. The three-phase inverter/rectifier transmits the power to and from the grid. Also, it operates as a UPS in the islanding mode. The thyristor switches are used for connecting/disconnecting between the grid and the AC load. A 15 kW prototype is implemented to verify the performance of the proposed system
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