Inverter EMI modeling and simulation methodologies

A numerical prediction of electromagnetic interference (EMI) allows evaluation of EMI performances at the design stage and before prototyping. It can also help reduce the post-prototype EMC cost by minimizing late re-design and modifications of a drive implementation. This paper describes two simulation approaches with time and frequency domain simulations and verifies them with experimental results. Both time and frequency domain simulation approaches are found effective as long as the noise source and propagation path are properly modeled. The 3 dimensional finite element analysis (FEA) based parasitic parameter extraction tool - Ansoft Spicelink/spl trade//spl trade/ has been used substantially. To gain additional degree of confidence, the results obtained from FEA are verified with closed-form solutions and actual measurements.

[1]  Jih-Sheng Lai,et al.  Characterization of power electronics system interconnect parasitics using time domain reflectometry , 1998 .

[2]  Jih-Sheng Lai,et al.  Three-phase inverter differential mode EMI modeling and prediction in frequency domain , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..

[3]  Mark J. Nave,et al.  Prediction of Conducted Emissions in Switched Mode Power Supplies , 1986, 1986 IEEE International Symposium on Electromagnetic Compatibility.

[4]  Thomas A. Lipo,et al.  Modeling of motor bearing currents in PWM inverter drives , 1995 .

[5]  A. Puzo,et al.  Influence of the Driver Circuits in the Generation and Transmission of EMI in a Power Converter, Effects on its Electromagnetic Susceptibility , 1995 .

[6]  K. P. Moy.  EMC related issues for power electronics , 1989, Automotive Power Electronics.

[7]  Jih-Sheng Lai,et al.  EMI characterization and simulation with parasitic models for a low-voltage high-current AC motor drive , 2002, IEEE Transactions on Industry Applications.

[8]  Henry W. Ott,et al.  Noise Reduction Techniques in Electronic Systems , 1976 .

[9]  Laszlo Tihanyi.  Electromagnetic Compatibility in Power Electronics , 1995 .

[10]  J. Roudet,et al.  Layout optimization to reduce EMI of a switched mode power supply , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[11]  Li Ran,et al.  Conducted electromagnetic emissions in induction motor drive systems. I. Time domain analysis and identification of dominant modes , 1998 .

[12]  J. Roudet,et al.  Power electronic converter EMC analysis through state variable approach techniques , 2001 .

[13]  T.W. Nehl,et al.  Towards EMI prediction of a PM motor drive for automotive applications , 2003, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..

[14]  Yuqing Tang,et al.  Modeling-based examination of conducted EMI emissions from hard- and soft-switching PWM inverters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[15]  Thomas A. Lipo,et al.  Source of induction motor bearing currents caused by PWM inverters , 1996 .

[16]  Deepak Divan,et al.  Conductive electromagnetic interference (EMI) noise evaluation for an actively clamped resonant DC link inverter (ACRDCLI) for electric vehicle (EV) traction drive applications , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.