具有负载无关零电压开关控制方法的可变输出电压DC/DC全桥变换器

2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) Pub Date : 2022-02-01 DOI:10.1109/pedstc53976.2022.9767205

Shokoufeh Valadkhani, M. Mirsalim, J. Moghani

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引用次数: 0

摘要

建议的转换器具有从几乎为零到50V/20A的宽输出范围。阴极保护应用、电动汽车(EV)电池充电器和光伏逆变器等具有广泛电压容量的应用的关键问题是，在低输出下很难实现零电压开关(ZVS)。所提出的变换器采用辅助无源元件来克服这一问题。此外，在变压器二次侧采用并联电容，以减少寄生电容的影响，并提供对寄生元件敏感度较低的鲁棒控制系统。理论计算和仿真结果验证了所提方法的正确性。

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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Variable Output Voltage DC/DC Full-Bridge Converter with Load-Independent Zero-Voltage-Switching Control Method

The suggested converter enjoys a wide output range from almost zero to 50V/20A. The crucial issue of applications with expansive voltage capacities such as cathodic protection applications, electric vehicle (EV) battery chargers, and photo-voltaic inverters is that the zero-voltage-switching (ZVS) is hardly attained at low outputs. The proposed converter employs auxiliary passive components to surmount this problem. Moreover, a parallel capacitor is implemented at the transformer secondary side to decrease the effect of the parasitic capacitors and provide a robust control system with less sensitivity to parasitic elements. Theoretical calculations and simulation outcomes confirm the veracity of the suggested method.

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2022 13th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC)

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