光电零电压转换DC-DC降压变换器

2018 International Conference on Engineering, Applied Sciences, and Technology (ICEAST) Pub Date : 2018-07-01 DOI:10.1109/ICEAST.2018.8434491

L. Kumar, R. Selvamathi, V. Indragandhi, D. Elangovan, G. Arunkumar

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引用次数: 2

摘要

本文提出了一种软开关低应力零电压晶体管脉宽调制降压变换器。该变换器消除了谐振变换器电容器通常存在的较大的电流和电压应力。在PSIM软件中对该转换器进行了仿真。文中给出了仿真结果和波形输出。用软件对零电压开关(ZVS)谐振降压变换器的开关损耗与ZVT降压变换器的开关损耗进行了比较。辅助开关形成谐振回路，将电源开关上的电压或电流降低到零，在主电源开关切换到导通状态之前开关。ZVT/软开关功率变换器通过降低电压/电流来降低元件应力和传导损耗，并使开关损耗最小化。该变换器的总效率提高到97%，高于传统的变换器。

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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Photovoltaic Based Zero Voltage Transition DC-DC Buck Converter

A soft switched low stress zero-voltage transistor (ZVT) pulse width modulated (PWM) buck converter has been suggested in this paper. The proposed converter eliminates large current and voltage stresses which are generally exhibited by the capacitor of resonant converters. The proposed converter is simulated in PSIM software. The results of the simulation and the waveform outputs have been presented in the paper. The Zero Voltage Switching (ZVS) resonant buck-converter's switching losses have been compared with that of ZVT buck converter with software results. The auxiliary switch forms a resonant loop, decreasing the voltage or current on the power switch to zero, which switches before the main power switch is switched to the conducting state. The ZVT/soft-switching power converter decreases component stress and conduction losses by reducing the voltage/current and minimizes switching losses. The overall efficiency of the converter improved to 97% which is higher than the conventional converter.

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来源期刊

2018 International Conference on Engineering, Applied Sciences, and Technology (ICEAST)

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