Analysis and implementation of a high step‐up converter for fuel cell power‐generation systems
Analysis and implementation of a high step‐up converter for fuel cell power‐generation systems
复制标题
燃料电池发电系统高升压转换器的分析与实现
DOI：
10.1002/cta.2195
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发表时间：
2016
影响因子：
2.3
通讯作者：
Chun‐An Cheng
中科院分区：
文献类型：
--
作者：
K. Tseng;Jia;M. Tsai;Chun‐An Cheng
本文提出了一种高升压转换器，它利用一个三绕组耦合电感和整流倍压电路，以获得高升压增益的燃料电池。所提出的转换器用作有源箝位电路，其缓解功率开关两端的大电压尖峰。因此，可以利用具有低额定电压的功率开关来降低传导损耗和电路成本。存储在耦合电感器的泄漏电感中的能量被再循环到输出端子，导致效率提高。此外，所提出的转换器中的耦合电感器还可以具有额外的绕组以实现更高的电压增益。最后，针对1000 W额定功率的燃料电池发电系统，开发了输入电压为60 V、输出电压为380 V的原型电路，验证了其性能，并给出了不同输入电压和输出功率水平下的实验波形和实测效率。版权所有© 2016约翰威利父子有限公司.
This paper presents a high step‐up converter, which utilizes a three‐winding coupled inductor and a rectified voltage‐doubler circuit to obtain high step‐up gain for fuel cells. The proposed converter functions as an active‐clamp circuit, which relieves large voltage spikes across the power switches. Thus, power switches with low‐voltage‐rated can be utilized to reduce conduction losses and circuit cost. Energy stored in leakage inductances of the coupled inductor is recycled to the output terminal, resulting in efficiency improvements. In addition, the coupled inductor in the presented converter can also have extra windings in order to achieve higher voltage gain. Finally, a prototype circuit with an input voltage of 60 V and an output voltage of 380 V is developed for a 1000 W‐rated fuel cell power‐generation system to validate its performance, and experimental waveforms and measured efficiency under different input voltages and output power level are demonstrated. Copyright © 2016 John Wiley & Sons, Ltd.