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首页> 外文期刊>Power Electronics, IET >High step-down interleaved buck converter with low voltage stress
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High step-down interleaved buck converter with low voltage stress

机译:具有低电压应力的高降压交错式降压转换器

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摘要

This study presents a four-phase interleaved buck converter with low voltage stress and high step-down conversion ratio. The proposed converter provides an extended duty cycle and low voltage stress for switches and diodes, in high step-down applications. This makes it possible to use switches with lower voltage rating and thus reduce both switching and conduction losses to improve the overall efficiency. Extremely low output current ripple and continuous input current are two other advantages of the proposed converter. Also, the output current can be shared between interleaved modules without using additional current sharing control technique due to charge balance of input and blocking capacitors. All these benefits are obtained without adding any active auxiliary component or using transformers. The experimental results from a prototype of the proposed converter designed for 400–24 V, operating at 0.5 kW, verify the theoretical analysis.
机译:这项研究提出了一种具有低电压应力和高降压转换比的四相交错式降压转换器。所提出的转换器在高降压应用中为开关和二极管提供了扩展的占空比和低电压应力。这样就可以使用额定电压较低的开关,从而减少开关损耗和传导损耗,从而提高整体效率。提议的转换器的另外两个优点是极低的输出电流纹波和连续输入电流。同样,由于输入电容器和阻塞电容器的电荷平衡,可以在交错模块之间共享输出电流,而无需使用其他电流共享控制技术。在不添加任何有源辅助组件或不使用变压器的情况下获得了所有这些好处。该拟议转换器的原型设计为400–24 V,工作在0.5 kW时的实验结果验证了理论分析。

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