基于sic的图腾柱无桥PFC变换器及控制策略研究

2023 6th International Conference on Energy, Electrical and Power Engineering (CEEPE) Pub Date : 2023-05-12 DOI:10.1109/CEEPE58418.2023.10165796

Chenkun Fan, Fang Liu, Shang Zhao

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引用次数: 0

摘要

针对图腾极功率因数校正(PFC)变换器中存在的浪涌电流、高频开关体二极管损耗和边界导通模式(BCM)工况损耗等问题，采用SiC肖特基二极管和SiC IGBT设计了一种改进的图腾极无桥PFC变换器，降低了浪涌电流和导通损耗的影响，提高了电路效率。基于电压直接前馈控制原理，优化设计了变换器控制系统，以减小过零时刻电流尖峰引起的谐波干扰，提高电能质量。利用Simulink对改进后的图腾杆无桥PFC变换器及其控制系统建立了仿真模型。实验结果表明，本文所设计的变换器在控制系统的作用下实现了高效率和高电能质量。

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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Research on SiC-based Totem-pole Bridgeless PFC Converter and Control Strategy

To address the problems of inrush current, high-frequency switching body diode loss and Boundary Conduction Mode (BCM) working condition loss in totem-pole Power Factor Correction (PFC) converter, an improved totem-pole bridgeless PFC converter is designed using SiC Schottky diode and SiC IGBT, which reduces the effects of inrush current and conduction loss while improving circuit efficiency. Based on the direct voltage feed-forward control principle, the converter control system is optimally designed to cut the harmonic interference caused by the current spikes at the over-zero moment and enhance the power quality. Simulation model of the improved totem-pole bridgeless PFC converter and its control system is built using Simulink. Experimental results demonstrate that the converter designed in this paper achieves high efficiency and high power quality under the action of the control system.

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来源期刊

2023 6th International Conference on Energy, Electrical and Power Engineering (CEEPE)

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