The electric vehicle (EV) requirement has various glitches and solutions in EV technology. Alternate energy that delivers the required power to the EVs is derived from the fuel cell with high performance. Nevertheless, the output voltage obtained from the fuel cell system is very less, and it is not enough to drive the motor of the EVs. The DC–DC converter increases the output voltage of the fuel cell system, and the EV also requires a different output voltage for the entire system. The DC–DC converter for fuel cell-based EVs requires high voltage gain with high conversion efficiency. However, the converter based on single-input three-output (SITO) DC–DC unidirectional converter can reduce loss and the cost of the system, and hence the overall efficiency. In this paper, a new single power-switch-based SITO converter topology is proposed to improve the voltage gain and conversion efficiency. The converter presented in this paper acts as a front-end DC–DC converter for the DC–AC inverter, and it supplies power to the auxiliary DC loads or for charging the auxiliary battery in EV. The converter has a single-stage voltage multiplier cell with a voltage clamp circuit to improve the voltage gain with soft-switching to reduce the loss, and hence the efficiency. The proposed converter is operated with a single MOSFET switch which delivers three different output levels with less voltage stress across the switch is the main feature of the proposed converter. The theoretical analysis is validated through the experimental results, and results verify that the proposed converter is best suitable for EV applications.

中文翻译：

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用于燃料电池电动汽车的高性能单输入三输出 DC-DC 高增益转换器

电动汽车 (EV) 需求在 EV 技术中存在各种故障和解决方案。为电动汽车提供所需功率的替代能源来自高性能燃料电池。然而，燃料电池系统获得的输出电压非常低，不足以驱动电动汽车的电机。DC-DC转换器提高了燃料电池系统的输出电压，EV对整个系统也需要不同的输出电压。用于燃料电池电动汽车的 DC-DC 转换器需要高电压增益和高转换效率。然而，基于单输入三输出 (SITO) DC-DC 单向转换器的转换器可以降低系统的损耗和成本，从而提高整体效率。在本文中，提出了一种新的基于单功率开关的 SITO 转换器拓扑，以提高电压增益和转换效率。本文介绍的转换器充当 DC-AC 逆变器的前端 DC-DC 转换器，它为辅助直流负载供电或为电动汽车中的辅助电池充电。该转换器具有带电压钳位电路的单级电压倍增器单元，可通过软开关提高电压增益，从而降低损耗，从而提高效率。建议的转换器使用单个 MOSFET 开关操作，该开关提供三种不同的输出电平，开关两端的电压应力较小是建议转换器的主要特征。通过实验结果验证了理论分析，结果验证了所提出的转换器最适合电动汽车应用。