Parasitic Effects of Grounding Paths on Common-Mode EMI Filter's Performance in Power Electronics Systems

High-frequency common-mode (CM) electromagnetic-interference (EMI) noise is difficult to suppress in electronics systems. EMI filters are used to suppress CM noise, but their performance is greatly affected by the parasitic effects of the grounding paths. In this paper, the parasitic effects of the grounding paths on an EMI filter's performance are investigated in a motor-drive system. The effects of the mutual inductance between two grounding paths are explored. Guidelines for the grounding of CM EMI filters are derived. Simulations and experiments are finally carried out to verify the theoretical analysis.

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

[2]  Ralph Morrison,et al.  Grounding and Shielding Techniques in Instrumentation , 1986 .

[3]  Lawrence E. Crooks,et al.  Noise reduction techniques in electronic systems (2nd ed.), Henry W. Ott. Wiley‐Interscience, New York. 1988 , 1989 .

[4]  C. Paul.  Introduction to electromagnetic compatibility , 2005 .

[5]  Richard Lee Ozenbaugh.  EMI Filter Design , 1995 .

[6]  Shuo Wang,et al.  Effects of parasitic parameters on EMI filter performance , 2004 .

[7]  F.C. Lee,et al.  Characterization, evaluation, and design of noise Separator for conducted EMI noise diagnosis , 2005, IEEE Transactions on Power Electronics.

[8]  F.C. Lee,et al.  Characterization and parasitic extraction of EMI filters using scattering parameters , 2005, IEEE Transactions on Power Electronics.

[9]  Eric Holzman.  Essentials of RF and microwave grounding , 2006 .

[10]  Christos Christopoulos,et al.  Introduction to Electromagnetic Compatibility , 2007 .

[11]  Fred C. Lee,et al.  Effects of Interactions Between Filter Parasitics and Power Interconnects on EMI Filter Performance , 2007, IEEE Transactions on Industrial Electronics.

[12]  Ralph Morrison.  Grounding and Shielding , 2007 .

[13]  James Roudet,et al.  Modeling of Connections Taking Into Account Return Plane: Application to EMI Modeling for Railway , 2007, IEEE Transactions on Industrial Electronics.

[14]  Johann W. Kolar,et al.  Design Of Minimum Volume Emc Input Filters For An Ultra Compact Three-phase Pwm Rectifier , 2007 .

[15]  Dan Chen,et al.  Effects of X Capacitors on EMI Filter Effectiveness , 2008, IEEE Transactions on Industrial Electronics.

[16]  Luis Angel Barragan,et al.  FPGA Implementation of a Switching Frequency Modulation Circuit for EMI Reduction in Resonant Inverters for Induction Heating Appliances , 2008, IEEE Transactions on Industrial Electronics.

[17]  Miguel Rodriguez,et al.  EMI Radiated Noise Measurement System Using the Source Reconstruction Technique , 2008, IEEE Transactions on Industrial Electronics.

[18]  Kayhan Gulez,et al.  Torque Ripple and EMI Noise Minimization in PMSM Using Active Filter Topology and Field-Oriented Control , 2008, IEEE Transactions on Industrial Electronics.

[19]  Steffen Bernet,et al.  Design of $LCL$ Filters of Active-Front-End Two-Level Voltage-Source Converters , 2009, IEEE Transactions on Industrial Electronics.

[20]  Mark J. Nave,et al.  Power line filter design for switched-mode power supplies , 2010 .