Passive and Active Hybrid Integrated EMI Filters

Two new planar integrated electromagnetic interference (EMI) filter structures that reduce the filter volume and that are based on standard printed circuit board (PCB) process technology are presented in this paper. First, a passive integrated EMI filter is presented, which results in a volume reduction of 24% compared to the discrete solution. However, this filter requires a planar ferrite core for the common-mode inductor. In order to eliminate the ferrite core and reduce the filter volume further (-40% versus discrete filter), a passive integrated structure is combined with an active EMI filtering circuit. The transfer function, the volume, and the losses of the discrete and the two integrated filters, which are designed for a 600 W power-factor-corrected converter, are compared.

[1]  Martin F. Schlecht,et al.  Design of active ripple filters for power circuits operating in the 1–10 MHz range , 1987, IEEE Power Electronics Specialists Conference.

[2]  J.D. van Wyk,et al.  Improving the Characteristics of integrated EMI filters by embedded conductive Layers , 2005, IEEE Transactions on Power Electronics.

[3]  Martin F. Schlecht,et al.  Viability of active EMI filters for utility applications , 1994 .

[4]  J.W. Kolar,et al.  Novel three-phase CM/DM conducted emissions separator , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[5]  T.C. Neugebauer,et al.  Parasitic capacitance cancellation in filter inductors , 2006, IEEE Transactions on Power Electronics.

[6]  J. Kolar,et al.  Using transformer parasitics for resonant converters - a review of the calculation of the stray capacitance of transformers , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[7]  Giorgio Spiazzi,et al.  Analysis of EMI filter induced instabilities in boost power factor preregulators , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).

[8]  J.A. Ferreira,et al.  Design method and material technologies for passives in printed circuit Board Embedded circuits , 2005, IEEE Transactions on Power Electronics.

[9]  L. Østergaard.  Modelling and Simulation of the Diode Split Transformer , 2000 .

[10]  J.W. Kolar,et al.  Implementation of a transformer-less common mode active filter for off-line converter systems , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[11]  J.W. Kolar,et al.  Differential mode EMC input filter design for a three-phase buck-type unity power factor PWM rectifier , 2004, The 4th International Power Electronics and Motion Control Conference, 2004. IPEMC 2004..

[12]  Johan Strydom,et al.  Electromagnetic design of integrated resonator-transformers , 2009 .

[13]  J.D. van Wyk,et al.  Integrating active, passive and EMI-filter functions in power electronics systems:a case study of some technologies , 2005, IEEE Transactions on Power Electronics.

[14]  David J. Perreault,et al.  Filters with inductance cancellation using printed circuit board transformers , 2003, IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03..

[15]  Johann W. Kolar,et al.  Using Transformer Parasitics for Resonant Converters—A Review of the Calculation of the Stray Capacitance of Transformers , 2005, IEEE Transactions on Industry Applications.

[16]  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.

[17]  Min Chen,et al.  Low-Frequency Input Impedance Modeling of Boost Single-Phase PFC Converters , 2007, IEEE Transactions on Power Electronics.

[18]  M. J. Nave,et al.  A novel differential mode rejection network for conducted emissions diagnostics , 1989, National Symposium on Electromagnetic Compatibility.