Compensation Control of Zero Current Detection Delay and Interleave Phase Error for CRM Totem-Pole Power Factor Correction in Portable Charging

被引：0
|
作者：
Wang S. [1 ]
Li H. [2 ]
Gu Z. [3 ]
Zhang Z. [1 ]
Ren X. [1 ]
机构：
[1] College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] School of Electrical Engineering and Automation, Anhui University, Hefei
[3] The 13th Research Instituteof CETC, Shijiazhuang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 01期
关键词：
Critical conduction mode (CRM); Interleave; Portable charging; Totem-pole power factor correction (PFC); Zero-current-detection (ZCD);
D O I：
10.19595/j.cnki.1000-6753.tces.211289
中图分类号：
学科分类号：
摘要：
Totem-pole power factor correction (PFC) is widely used in EV chargers to improve the charging efficiency. A full-range ZVS control model considering ZVS margin and light load frequency limitation is proposed in this paper, full ZVS operation is realized within full voltage range. The impact of zero-current-detection (ZCD) delay on the total harmonic distortion (THD) of input current is analyzed, and a ZCD delay compensation method basedontheon-line time calculation model is proposed, the full load THD is reduced by 1.4%. For the phase error of two-phase interleaving, a phase error compensation method considering the change of switching period is proposed, which improves the interleaving accuracy and the full load THD is further reduced by 0.5%. Finally, a prototype of 3-kW portable charger is built to verify the effectiveness of the proposed control strategy. The maximum efficiency of the totem-pole PFC stage is 98.8%, and the maximum charging efficiency is 96.6%. The full load THD is 2.4%, which is 1.9% lower than that before compensation. © 2022, Electrical Technology Press Co. Ltd. All right reserved.
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页码：12 / 23
页数：11
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