Design and Implementation Bidirectional DC–AC Converter for Energy Storage System

IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE IEEE Canadian Journal of Electrical and Computer Engineering Pub Date : 2023-03-11 DOI:10.1109/ICJECE.2022.3233840

K. Suresh;E. Parimalasundar;M. S. Sujatha;N. M. G. Kumar

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引用次数: 8

Abstract

This article proposes a bidirectional single-phase dc–ac converter with triple port converter (T-PC) for application of energy storage. This proposed converter provides three ports such as ac port, dc port, and dc bus port to achieve three power interfacing ports. For the direct conversion process, dc port is directly connected to T-PC, and direct power will be exchanged between energy storage device (ESD) and grid when the ESD voltage peak amplitude is lower than the ac voltage. Thus, a dc–dc converter downstream power process gets reduced, and power loss is decreased considerably. Due to multilevel characteristics, switching losses in the T-PC can be reduced. The efficiency of the overall bidirectional dc–ac conversion process can be increased significantly. The circuit model, working principle, and modulation control of T-PC-based bidirectional dc–ac conversion concepts are analyzed. A 1.5-kW test-bench model is developed and its effectiveness is verified to find the merits of suggested conversion.

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储能系统双向直流-交流变换器的设计与实现

本文提出了一种用于储能的带三端口转换器（T-PC）的双向单相直流-交流转换器。该转换器提供了三个端口，如交流端口、直流端口和直流总线端口，以实现三个电源接口端口。对于直接转换过程，直流端口直接连接到T-PC，当ESD电压峰值幅度低于交流电压时，将在储能装置（ESD）和电网之间交换直流电。因此，直流-直流转换器的下游功率过程得以减少，功率损耗也大大降低。由于多电平特性，可以降低T-PC中的开关损耗。整个双向直流-交流转换过程的效率可以显著提高。分析了基于T-PC的双向直流-交流转换概念的电路模型、工作原理和调制控制。开发了一个1.5千瓦的试验台模型，并对其有效性进行了验证，以找出建议转换的优点。

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