Differential Mode Input Filter Design for a Three-Phase Buck-Type PWM Rectifier Based on Modeling of the EMC Test Receiver

For a three-phase buck-type pulsewidth modulation rectifier input stage of a high-power telecommunications power supply module, a differential-mode (DM) electromagnetic compatibility (EMC) filter is designed for compliance to CISPR 22 Class B in the frequency range of 150 kHz-30 MHz. The design is based on a harmonic analysis of the rectifier input current and a mathematical model of the measurement procedure including the line impedance stabilization network (LISN) and the test receiver. Guidelines for a successful filter design are given, and components for a 5-kW rectifier prototype are selected. Furthermore, formulas for the estimation of the quasi-peak detector output based on the LISN output voltage spectrum are provided. The damping of filter resonances is optimized for a given attenuation in order to facilitate a higher stability margin for system control. Furthermore, the dependence of the filter input and output impedances and the attenuation characteristic on the inner mains impedance are discussed. As experimentally verified by using a three-phase common-/Differential-Mode separator, this procedure allows accurate prediction of the converter DM conducted emission levels and therefore could be employed in the design process of the rectifier system to ensure compliance to relevant EMC standards

[1]  M. Albach.  Conducted interference voltage of AC-DC converters , 1986, 1986 17th Annual IEEE Power Electronics Specialists Conference.

[2]  Byungcho Choi,et al.  Intermediate line filter design to meet both impedance compatibility and EMI specifications , 1995 .

[3]  F.C. Lee,et al.  Input filter design for power factor correction circuits , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[4]  C. R. Kohut.  Input filter design criteria for switching regulators using current-mode programming , 1992 .

[5]  Peter J. Wolfs,et al.  The coupled inductor filter: analysis and design for AC systems , 1998, IEEE Trans. Ind. Electron..

[6]  Fred C. Lee,et al.  A new control algorithm for three-phase PWM buck rectifier with input displacement factor compensation , 1993 .

[7]  Paolo Tenti,et al.  Three-Phase AC/DC PWM Converter with Sinusoidal AC Currents and Minimum Filter Requirements , 1987, IEEE Transactions on Industry Applications.

[8]  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).

[9]  Robert W. Erickson,et al.  Physical origins of input filter oscillations in current programmed converters , 1992 .

[10]  Pertti Silventoinen,et al.  Electromagnetic compatibility and EMC-measurements in DC-voltage link converters , 2001 .

[11]  G. Joos,et al.  Input filter design for PWM current-source rectifiers , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[12]  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..

[13]  S. Y. Erich,et al.  Input filter design criteria for current-programmed regulators , 1992 .

[14]  G. A. Kyriazis.  Analysis of discrepancies between measured and predicted conducted emissions in switched-mode power supplies , 1997, IEEE 1997, EMC, Austin Style. IEEE 1997 International Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.97CH36113).

[15]  R. D. Middlebrook,et al.  Input filter considerations in design and application of switching regulators. , 1976 .

[16]  Johann W. Kolar,et al.  Advanced modulation scheme for three-phase three-switch buck-type PWM rectifier preventing mains current distortion originating from sliding input filter capacitor voltage intersections , 2003, IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03..

[17]  Robert W. Erickson,et al.  Optimal single resistors damping of input filters , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[18]  Robert M. Tedder,et al.  An alternate analysis of the current programmed model leads to simplified input filter design criteria (power convertors) , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[19]  J.W. Kolar,et al.  Differential mode EMC input filter design for three-phase AC-DC-AC sparse matrix PWM converters , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[20]  U. Drofenik,et al.  New wide input voltage range three-phase unity power factor rectifier formed by integration of a three-switch buck-derived front-end and a DC/DC boost converter output stage , 2000, INTELEC. Twenty-Second International Telecommunications Energy Conference (Cat. No.00CH37131).

[21]  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..

[22]  Douglas K. Lindner,et al.  Input filter interaction in three phase AC-DC converters , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).