New multifunctional push-pull converter operating with MPPT and integrated energy storage system for PV micro-inverter applications

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society Pub Date : 2017-10-29 DOI:10.1109/IECON.2017.8217368

Luis A. M. Barros, V. Monteiro, B. Exposto, A. Nogueiras, J. Afonso, J. G. Pinto

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引用次数: 1

Abstract

This paper presents a novel multifunctional push-pull converter for micro-inverter applications, used to interface photovoltaic (PV) modules and an battery energy storage system with the power grid (PG). The push-pull DC-DC power converter requires only two switching devices. It uses a specific algorithm to control the batteries charging process, preserving their lifetime, and also to operate as maximum power point tracker, optimizing the energy production from the PVs modules. The push-pull DC-AC power converter operates in coordination with the DC-DC converter, injecting all available energy from the PVs modules into the PG. If the produced energy exceeds the consumed energy, the surplus is used to charge the batteries for latter consumption. The proposed topology aims to contribute to the technological development in terms of power converters for micro-inverter applications. Throughout the paper is given a detailed explanation on the principle of operation of the new topology, as well as on the proposed digital control algorithm.

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应用于光伏微型逆变器的MPPT和集成储能系统的新型多功能推挽变换器

本文提出了一种用于微型逆变器应用的新型多功能推挽变换器，用于连接光伏(PV)模块和电池储能系统与电网(PG)。推挽式DC-DC电源变换器只需要两个开关器件。它使用一种特定的算法来控制电池充电过程，保持电池的使用寿命，并作为最大功率点跟踪器运行，优化光伏模块的能源生产。推挽式DC-AC电源转换器与DC-DC转换器协同工作，将光伏模块的所有可用能量注入PG，如果产生的能量超过消耗的能量，则剩余的能量用于给电池充电以供后期使用。提出的拓扑结构旨在为微逆变器应用的功率变换器的技术发展做出贡献。全文对新拓扑的工作原理以及所提出的数字控制算法进行了详细的说明。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

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