家电科技2024，Vol.6Issue(6)：106-110,5.DOI:10.19784/j.cnki.issn1672-0172.2024.06.018
单相有源PFC电器中EMI电路共模电感发热研究
Common mode inductance thermal analysis in EMI circuit for active power factor correction based single-phase electrical system
摘要
Abstract
In single-phase AC-powered household appliance systems,EMI filters composed of X capacitors and common-mode inductors are typically used to suppress electromagnetic interference,and Boost-type Power Factor Correction(PFC)circuits are employed to improve power factor and reduce current harmonics.However,under certain conditions,the common-mode inductor may experience excessive temperature rise or even overheat and burn out due to current resonance.A high-frequency ripple current equivalent circuit model is established for the EMI filter and Boost-type PFC circuit,revealing the mechanism by which the differential mode component of the common-mode inductor induces current resonance under the excitation of PFC switching ripple current.It analyzes the critical impact of the common-mode inductor's leakage inductance and the X capacitor on current resonance and proposes strategies to reduce the resonance frequency and peak resonance current.Using an inverter air conditioning system as a case study,PSIM simulations and experiments were conducted,which validate the accuracy of the model analysis.A PFC carrier frequency design and common-mode inductor optimization scheme is proposed,thoroughly resolving the reliability issue of common-mode inductor resonance.关键词
功率因数校正/EMI/共模电感/谐振Key words
Power factor correction/EMI/Common mode inductance/Resonance分类
信息技术与安全科学引用本文复制引用
黄招彬,龙谭,徐锦清,胡斌,刘文龙..单相有源PFC电器中EMI电路共模电感发热研究[J].家电科技,2024,6(6):106-110,5.基金项目
2020年广东省重点研发计划(项目编号:2021B0101310001). （项目编号:2021B0101310001）
