软开关电流馈电双向隔离三相DC-DC变换器

2017 Brazilian Power Electronics Conference (COBEP) Pub Date : 2017-11-01 DOI:10.1109/COBEP.2017.8257260

H. Filho, G. S. Costa, A. D. M. Santos, D. Oliveira

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引用次数: 3

摘要

本文提出了一种基于电压源双有源桥(DAB)拓扑结构的软开关馈电双向隔离三相dc-dc变换器。与电压源拓扑结构相比，电流馈电结构具有更大的灵活性，可以确保宽工作范围内的软开关，因为可变占空比允许在变换器的一次和二次侧之间保持直流链路常数。给出了所提出的转换器的细节和描述。对该拓扑的潮流特性和开关特性进行了数学分析。以额定电压为48V/380V，功率为3.5kW的设计实例为例，进行了仿真验证。

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A soft switching current fed bidirectional isolated three-phase DC-DC converter

A soft switching current fed bidirectional isolated three-phase dc-dc converter based on a voltage source dual-active bridge (DAB) topology is presented in this work. Current fed structures have more flexibility to ensure soft switching for a wide operating range, when compared with voltage source topologies, because the variable duty cycle allows maintain a dc link constant between the primary and secondary sides of the converter. Details and description of the proposed converter are presented. A mathematical analysis is realized regarding the power flow behavior and the switching characteristics of the topology. Simulations results considering a design example rated at 48V/380V, 3.5kW are performed to validate the proposed approach.

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2017 Brazilian Power Electronics Conference (COBEP)

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