基于混合开关结构 PWM 谐振转换器的 35 kW 隔离燃料电池 DC-DC 转换器设计

IF 1.3 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Seung-Min Nam, Young-Joo Kim, Jae-Hyuck Choi, Min-Kyo Jung, Jun-Young Lee
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引用次数: 0

摘要

本文介绍了采用混合开关结构的 35 千瓦隔离式燃料电池直流-直流转换器(FDC)的设计。通过采用可使用绝缘栅双极晶体管(IGBT)的电路结构和脉宽调制(PWM)方法,与使用全碳化硅金属氧化物半导体场效应晶体管(SiC-MOSFET)相比,即使在几十千赫兹的频率下,价格也不会明显降低。拟议的转换器基于 PWM 谐振转换器,具有良好的开关特性,对开关器件的电压应力较低。然而,由于电流应力较大,它的成本较高。采用混合开关结构可以解决这一问题,该结构在前导脚开关中采用了 IGBT。考虑到输入和输出电压的巨大变化,本文介绍了主要参数的设计、考虑开关特性的功率半导体的选择以及频率选择方法。利用输出功率为 35 kW(输入电压 = 330-610 V,输出电压 = 450-850 V)、开关频率为 40 kHz 的原型验证了所提出的 FDC 设计的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

35 kW isolated fuel-cell DC–DC converter design based on PWM resonant converter with hybrid switch structure

35 kW isolated fuel-cell DC–DC converter design based on PWM resonant converter with hybrid switch structure

This paper presents the design of a 35 kW isolated fuel-cell DC–DC converter (FDC) with a hybrid switch structure. By utilizing a circuit structure and pulse-width modulation (PWM) method that enables the use of insulated-gate bipolar transistors (IGBTs), the price is reduced without a significant efficiency degradation even at frequencies of tens of kHz when compared to using all silicon carbide metal–oxide–semiconductor field-effect transistors (SiC-MOSFETs). The proposed converter is based on a PWM resonant converter, which has good switching characteristics and low-voltage stresses on the switching devices. However, it suffers from high cost owing to heavy current stresses. This problem can be solved using a hybrid switch structure that adopts IGBTs in the leading-leg switches. Considering the wide variations in the input and output voltages, the design of the main parameters, the selection of power semiconductors considering the switching characteristics, and the frequency selection method are presented. The feasibility of the proposed FDC design is verified using a prototype implemented with an output power of 35 kW (input voltage = 330–610 V and output voltage = 450–850 V) and a switching frequency of 40 kHz.

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来源期刊
Journal of Power Electronics
Journal of Power Electronics 工程技术-工程:电子与电气
CiteScore
2.30
自引率
21.40%
发文量
195
审稿时长
3.6 months
期刊介绍: The scope of Journal of Power Electronics includes all issues in the field of Power Electronics. Included are techniques for power converters, adjustable speed drives, renewable energy, power quality and utility applications, analysis, modeling and control, power devices and components, power electronics education, and other application.
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