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[1]贲洪奇,赵志强,丁明远.一种单级全桥 PFC 变换器变压器偏磁抑制策略[J].电机与控制学报,2020,24(03):20-27.[doi:10.15938/j.emc.2020.03.003]
 BEN Hong-qi,ZHAO Zhi-qiang,DING Ming-yuan.Bias-magnetic suppression strategy for single-stage full-bridge PFC converter[J].,2020,24(03):20-27.[doi:10.15938/j.emc.2020.03.003]
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一种单级全桥 PFC 变换器变压器偏磁抑制策略(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
24
期数:
2020年03
页码:
20-27
栏目:
出版日期:
2020-03-15

文章信息/Info

Title:
Bias-magnetic suppression strategy for single-stage full-bridge PFC converter
作者:
贲洪奇 赵志强 丁明远?
( 哈尔滨工业大学 电气工程及自动化学院,哈尔滨 150001)?
Author(s):
BEN Hong-qi ZHAO Zhi-qiang DING Ming-yuan?
( School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China)?
关键词:
单级全桥 PFC 变换器 偏磁 抑制策略 数字
Keywords:
single-stage full-bridge PFC converter bias-magnetic suppression strategy digital
分类号:
TM 461
DOI:
10.15938/j.emc.2020.03.003
文献标志码:
A
摘要:
单相单级全桥 PFC 变换器变压器双向励磁,具有功率密度高和电气隔离等特点,适用于中 大功率场合,但该变换器由于其工作方式的特殊性,存在特有的变压器偏磁现象。通过对单级全桥 PFC 变换器的工作原理与变压器偏磁产生机理进行分析,得出每 1 /4 工频周期内磁化曲线中心点 偏移情况,并递推得到偏移量的最大值。在此基础上,提出一种正负半周对称的数字抑制策略,通 过设计开关管的时序,使每个开关周期内变压器正负向励磁时间相等,进而消除了变压器偏磁; 与 传统偏磁抑制方式相比,该策略不增加电路的复杂程度与系统的体积、重量,实现较为容易。最后, 通过搭建额定输出电压/电流为 48V /12A 的样机验证了所提出的偏磁抑制策略的可行性。?
Abstract:
?Single-phase single-stage full-bridge PFC converter transformer bi-directional excitation,with high power density and electrical isolation characteristics,is suitable for medium and high power applications. However,due to the particularity of its working mode,the converter has its own transformer bias phenomenon. Through the analysis of the working principle of single-stage full-bridge PFC converter and the generation mechanism of transformer magnetic bias,the central point offset of the magnetization curve was obtained in every quarter of the power frequency cycle,and the maximum value of the offset was obtained recursively. On this basis,a digital suppression strategy with positive and negative half-cycle symmetry was proposed,which makes the positive and negative excitation time of transformer equal in each switching period,then eliminates the transformer bias. Compared with the traditional suppression method,the strategy does not increase the complexity of the circuit and the volume and weight of the system, and the realization method is easier. Finally,a prototype with rated output voltage and output current of 48V /12A was built to verify the feasibility of the proposed strategy.?

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备注/Memo

备注/Memo:
收稿日期: 2019 - 07 - 31?
基金项目: 国家自然科学基金( 51377036)?
作者简介: 贲洪奇( 1965—) ,男,博士,教授,博士生导师,研究方向为高频功率变换技术和功率因数校正技术等;?
? ? ? ? ? ? ? ? 赵志强( 1997—) ,男,硕士研究生,研究方向为有源功率因数校正技术;?
? ? ? ? ? ? ? ? 丁明远( 1995—) ,男,博士研究生,研究方向为有源功率因数校正技术。?
通信作者: 贲洪奇
更新日期/Last Update: 2020-06-28