Modeling and Design of Common Mode and Differential Mode Filter for PWM Converters

This paper presents a method to model a back-to-back converter and the additional passive filter system. The mathematical modeling method followed the step of converting the three-phase system to single phase systems by separating the differential mode (DM) and common mode (CM) noise circuit for the design of the filter components separately. The model accounts for parasitic components in the converters and presents an indirect method of estimating parasitic capacitance for CM filter design. Design rules for the different components are summarized. Results from a lab prototype are presented and show good correspondence to the model.

[1]  Johann W. Kolar,et al.  Analysis and practical relevance of CM/DM EMI noise separator characteristics , 2017 .

[2]  Thomas A. Lipo,et al.  Pulse Width Modulation for Power Converters: Principles and Practice , 2003 .

[3]  R.W. De Doncker,et al.  Systematic design of EMI-filters for power converters , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[4]  Dongbing Zhang,et al.  A new method to characterize EMI filters , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[5]  Johann W. Kolar,et al.  The Input Impedance of Common-Mode and Differential-Mode Noise Separators , 2015, IEEE Transactions on Industry Applications.

[6]  Yie-Tone Chen,et al.  A procedure for designing EMI filters for AC line applications , 1996 .

[7]  Johann W. Kolar,et al.  Guideline for a Simplified Differential-Mode EMI Filter Design , 2010, IEEE Transactions on Industrial Electronics.

[8]  M. Liserre,et al.  Design and control of an LCL-filter based three-phase active rectifier , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[9]  Johann W. Kolar,et al.  Differential Mode Input Filter Design for a Three-Phase Buck-Type PWM Rectifier Based on Modeling of the EMC Test Receiver , 2006, IEEE Transactions on Industrial Electronics.