A Novel Bidirectional CLC-T Resonant Immittance Converter for CC / CV Battery Charging

Q3 Engineering

AUS Pub Date : 2023-03-29 DOI:10.1109/ESARS-ITEC57127.2023.10114862

N. J. Merlin Mary, Shelas Sathyan

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引用次数: 0

Abstract

This paper proposes a novel bidirectional CLC-T resonant immittance converter with a modified secondary for electric vehicle battery charging applications. The proposed converter has inherent constant current (CC) / constant voltage (CV) charging characteristics and is operated only at the resonant frequency. The first harmonic approximation (FHA) technique is used to design the proposed 3.3 kW, 400 V input, 320–420 V output resonant immittance converter. The converter performance at steady-state in charging and discharging operation modes is validated using PSIM simulation. In charging mode, the converter delivers constant current output till the battery reaches the rated voltage. Beyond that, it delivers constant voltage output with decreasing current. The resonant tank is equivalent to CLC-T and CL in CC and CV modes. All the switches attain zero voltage switching in charging and discharging operations. The circulating losses are drastically reduced, which increases the efficiency of the proposed converter as it is operated only at the fixed resonant frequency. As no modulation technique is involved, the complexity of the controller implementation for CC / CV charging is eliminated.

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用于CC / CV电池充电的新型双向lc - t谐振阻抗变换器

本文提出了一种新型的双向CLC-T谐振阻抗变换器，该变换器具有改进的二次电路，可用于电动汽车电池充电。该变换器具有固有的恒流/恒压充电特性，并且仅在谐振频率下工作。采用一次谐波近似(FHA)技术设计了3.3 kW、输入400 V、输出320-420 V的谐振阻抗变换器。通过PSIM仿真验证了变换器在充电和放电工作模式下的稳态性能。在充电模式下，转换器提供恒流输出，直到电池达到额定电压。除此之外，它提供恒定的电压输出与减少电流。谐振槽在CC和CV模式下相当于CLC-T和CL。所有开关在充放电操作中均实现零电压切换。循环损耗大大降低，提高了变换器的效率，因为它只在固定的谐振频率下工作。由于不涉及调制技术，消除了CC / CV充电控制器实现的复杂性。

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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来源期刊

AUS Engineering-Architecture

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： Revista AUS es una publicación académica de corriente principal perteneciente a la comunidad de investigadores de la arquitectura y el urbanismo sostenibles, en el ámbito de las culturas locales y globales. La revista es semestral, cuenta con comité editorial y sus artículos son revisados por pares en el sistema de doble ciego. Periodicidad semestral.