EMI Filter Design for High Switching Frequency Three-Phase/Level PWM Rectifier Systems

被引：17

作者：

Hartmann, M. ^{[1
]}

Ertl, H. ^{[2
]}

Kolar, J. W. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Power Elect Syst Lab, Zurich, Switzerland

[2] Univ Technol Vienna, Power Elect Sect, Inst Elect Drives & Mach, Vienna, Austria

来源：

2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) | 2010年

关键词：

D O I：

10.1109/APEC.2010.5433382

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The actual attenuation characteristic of EMI filters in practice often differs from theoretical predictions and minor changes could result in a significant performance improvement. Whereas the performance of the differential-mode (DM) filter stage usually can be well predicted, the common-mode (CM) behavior is more difficult to handle. This is especially true for three-phase PWM rectifier systems, which show a large high-frequency CM voltage at the rectifier output. In this work the possible CM noise current paths of a three-phase/level PWM rectifier are analyzed where parasitic capacitances to the heat sink and to earth are considered. Additionally, a concept to significantly reduce CM emissions is discussed in detail. Based on the proposed models an EMI filter design for a system with 1 MHz switching frequency is shown. Experimental verification of the designed EMI filter is presented by impedance and conducted emission (CE) measurements taken from a 10 kW hardware prototype. Several practical aspects of filter realization like component arrangement, shielding layers, magnetic coupling etc. are discussed and verified by measurements.

引用

页码：986 / 993

页数：8

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