便携式充电CRM图腾柱功率因数校正过零检测延迟与交错相位误差补偿控制  

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

作　　者：王生东 李浩然 顾占彪[3] 张之梁[1] 任小永[1] Wang Shengdong;Li Haoran;Gu Zhanbiao;Zhang Zhiliang;Ren Xiaoyong(College of Automation Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China;School of Electrical Engineering and Automation Anhui University,Hefei 230039 China;The 13th Research Institute of CETC,Shijiazhuang 050051 China)

机构地区：[1]南京航空航天大学自动化学院,南京211106 [2]安徽大学电气工程与自动化学院,合肥230039 [3]中国电子科技集团公司第十三研究所,石家庄050051

出　　处：《电工技术学报》2022年第1期12-23,共12页Transactions of China Electrotechnical Society

基　　金：江苏省产业前瞻和关键核心技术基金资助项目(BE2019113)。

摘　　要：图腾柱功率因数校正(PFC)被广泛应用于电动汽车充电机以提高充电效率。该文提出考虑零电压开通(ZVS)裕度和轻载频率限制的全范围ZVS控制模型,全电压范围内实现完全ZVS开通。分析了电流过零检测(ZCD)延迟对输入电流总谐波畸变率(THD)的影响,提出基于在线时间计算模型的ZCD延迟补偿方法,满载电流THD降低1.4%。针对两相交错相位误差,提出考虑开关周期变化量的相位误差补偿方法,提高交错精度,满载THD进一步降低0.5%。最后,搭建了一台3kW便携式充电机,验证所提控制策略的有效性,充电机前级图腾柱PFC最高效率为98.8%,整机最高充电效率为96.6%,满载THD为2.4%,相比补偿前降低1.9%。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 based on the on-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 totempole 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.

关 键 词：便携式充电 临界电流模式 图腾柱功率因数校正 电流过零检测 交错并联 

分 类 号：TM461[电气工程—电器]