Conducted EMI in PWM inverter for household electric appliance
Tóm tắt
This paper presents the mitigation effort of the conducted electromagnetic interference (EMI) in the pulsewidth-modulation (PWM) inverter for household electric appliances. First, noise sources in the PWM inverter are investigated to get an understanding of their characteristics, and the propagation of the conducted EMI is described. Next, input filters are added to: suppress it. With changing filter stages, the conducted EMI spectra are measured to identify their effect. The common-mode EMI spectrum is extracted to separate the effect of the common-mode filter and to identify the dominant noise source. A new active common-mode EMI filter is proposed to give better attenuation of the common-mode noise and to enhance the performance of additional passive filters. An efficient way to design of input filter is discussed based on the measurement results.
Từ khóa
#Electromagnetic interference #Pulse width modulation inverters #Home appliances #Passive filters #EMP radiation effects #Pulse inverters #Electromagnetic propagation #Active filters #Attenuation #Active noise reductionTài liệu tham khảo
10.1109/63.17949
10.1109/63.892829
10.1109/PCCON.1997.645634
ogasawara, 2000, circuit configurations and performance of the active common-noise canceler for reduction of common-mode voltage generated by voltage-source pwm inverter, Conf Rec IEEE-IAS Annu Meeting, 1482
10.1109/28.536872
nave, 1991, Power Line Filter Design for Switched Mode Power Supplies
10.1109/2943.798337
10.1109/2943.798335
kolar, 1999, analytical calculation of the rms current stress on the dc link capacitor of voltage dc link pwm converter systems, Proceedings of 9th International Conference on Electrical Machines and Drives, 81, 10.1049/cp:19990995
10.1109/IAS.1999.805952
tihanyi, 1995, Electromagnetic Compatibility in Power Electronics
10.1109/28.833776
1993, Limits and Methods of Measurement of Radio Disturbance Characteristics of Electrical Motor-Operated and Thermal Appliances for Household and Similar Purposes Electric Tools and Electric Apparatus
10.1109/NSEMC.1989.37184
williams, 1996, EMC for Product Designers