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首页> 外文期刊>Electric Power Components and Systems >Reduction of Losses and Efficiency Enhancement of a Zero-voltage Transition-Zero-current Transition Pulse-width Modulated Synchronous Buck Converter with a Simple Passive Auxiliary Circuit
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Reduction of Losses and Efficiency Enhancement of a Zero-voltage Transition-Zero-current Transition Pulse-width Modulated Synchronous Buck Converter with a Simple Passive Auxiliary Circuit

机译：具有简单无源辅助电路的零电压过渡-零电流过渡脉宽调制同步Buck转换器的损耗降低和效率增强

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摘要

In this article, a novel auxiliary circuit is incorporated with a synchronous buck converter, which provides zero-voltage transition-zero-current transition switching conditions for the main and synchronous switches in the proposed converter. There are no additional voltage and current stress on main and synchronous switches due to the resonance of the auxiliary circuit that acts for a small segment of time in the proposed converter. A zero-voltage transition-zero-current transition pulse-width modulated synchronous buck converter with a simple passive auxiliary circuit reduces the stress and improves the efficiency by pacifying the conduction and switching losses compared to a traditional converter. The important design feature of the zero-voltage transition zero-current transition pulse-width modulated synchronous buck converter is the placement of resonant components that mollify the conduction and switching losses. Due to the zero-voltage transition-zero-current transition, the resonant components with low values are used, thereby resulting in the increase of switching frequency. The zero-voltage transition-zero-current transition operation of the proposed converter is presented through theoretical analysis. The characteristics of the proposed converter are verified with simulation in the PSIM (Power-sim Inc, Rockville, USA) co-simulated with a MATLAB/SIMULINK (The Math Works, Natick, Massachusetts, USA) environment and implemented experimentally.
机译：在本文中，一种新颖的辅助电路与同步降压转换器集成在一起，该转换器为拟议转换器中的主开关和同步开关提供零电压过渡-零电流过渡的开关条件。在建议的转换器中，由于辅助电路的谐振会在很小的时间内起作用，因此在主开关和同步开关上没有额外的电压和电流应力。与传统转换器相比，具有简单无源辅助电路的零电压转换零电流转换脉宽调制同步降压转换器可减轻应力，并通过缓解导通和开关损耗来提高效率。零电压转换零电流转换脉宽调制同步降压转换器的重要设计特征是放置谐振元件，以减小导通和开关损耗。由于零电压转变-零电流转变，使用了具有低值的谐振分量，从而导致开关频率的增加。通过理论分析，提出了该转换器的零电压-零电流过渡操作。拟议的转换器的特性已在PSIM（美国罗克维尔的Power-sim公司）中通过仿真进行了验证，并与MATLAB / SIMULINK（美国马萨诸塞州纳蒂克的Math Works）环境共同仿真，并通过实验实现。

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