Mitigation of Current Distortion for GaN-Based CRM Totem-Pole PFC Rectifier with ZVS Control

被引：10

作者：

Sun J. ^{[1
]}

Gui H. ^{[1
]}

Li J. ^{[1
]}

Huang X. ^{[1
]}

Strain N. ^{[1
]}

Costinett D.J. ^{[1
]}

Tolbert L.M. ^{[1
]}

机构：

[1] Department of Electrical Engineering and Computer Science, The University of Tennessee Knoxville, Knoxville, 37996, TN

来源：

Sun, Jingjing (jsun30@vols.utk.edu) | 1600年 / Institute of Electrical and Electronics Engineers Inc.卷 / 02期

关键词：

CRM; current distortion; data centers; GaN; totem-pole PFC; wireless charging; ZVS control;

D O I：

10.1109/OJPEL.2021.3071213

中图分类号：

学科分类号：

摘要：

The GaN-based critical conduction mode (CRM) totem-pole power factor correction (PFC) converter with full-line-cycle zero voltage switching (ZVS) is a promising candidate for high-efficiency front-end rectifiers. However, the input current can be degraded by line-cycle current distortion and ac line zero-crossing current spikes, and maintaining reliable ZVS control is difficult in noise-susceptible high-frequency environments. In this paper, a detailed analysis of the current distortion issues in a GaN-based CRM totem-pole PFC with digital ZVS control is provided, and effective approaches are proposed to mitigate different kinds of current distortion and ensure stable ZVS control under high-frequency operation. The proposed solutions have the advantages of straightforward implementation and do not increase the control complexity. The current distortion issues are demonstrated in two GaN-based CRM totem-pole PFC prototypes, a 1.5 kW PFC for data centers and a 100 W PFC in a 6.78 MHz wireless charging power supply for consumer electronics. The proposed methods are experimentally verified with effective mitigation of the current distortion and improvement of the converter power efficiency. © 2020 IEEE.

引用

页码：290 / 303

页数：13

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