文章基本信息

标题：Battery Energy Storage System for PV Output Power Leveling
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作者：Rajkiran Singh ; Seyedfoad Taghizadeh ; Nadia Mei Lin Tan 等
期刊名称：Advances in Power Electronics
印刷版ISSN：2090-181X
电子版ISSN：2090-1828
出版年度：2014
卷号：2014
DOI：10.1155/2014/796708
出版社：Hindawi Publishing Corporation
摘要：Fluctuating photovoltaic (PV) output power reduces the reliability in power system when there is a massive penetration of PV generators. Energy storage systems that are connected to the PV generators using bidirectional isolated dc-dc converter can be utilized for compensating the fluctuating PV power. This paper presents a grid connected energy storage system based on a 2 kW full-bridge bidirectional isolated dc-dc converter and a PWM converter for PV output power leveling. This paper proposes two controllers: a current controller using the d-q synchronous reference and a phase-shift controller. The main function of the current controller is to regulate the voltage at the high-side dc, so that the voltage ratio of the high-voltage side (HVS) with low-voltage side (LVS) is equal to the transformer turns ratio. The phase-shift controller is employed to manage the charging and discharging modes of the battery based on PV output power and battery voltage. With the proposed system, unity power factor and efficient active power injection are achieved. The feasibility of the proposed control system is investigated using PSCAD simulation.