Design trade-offs to meet class a IEC 61000-3-2 regulations with passive circuits in low power applications

The last amendment to IEC 61000-3-2 regulations significantly modified the regulation. In fact, Class A limits are now much softer. As a consequence, many of the solutions presented in the last years are now more or less useless for low power applications. This is due to the fact that simpler solutions as a passive LC filter can meet the regulations if the power level is below 500 W. This paper presents a study of trade-off passive solutions to meet IEC 61000-3-2 regulations for power levels below 300 W, even for universal line voltage. As it is demonstrated in the paper, designing the filter in such a way that the series resistance is higher can reduce the size of the inductor although the efficiency is penalized. A trade-off between size and efficiency can be established and, in some cases, using just the resistor can reduce the input current harmonic content sufficiently to comply with the abovementioned regulation and with an acceptable efficiency penalty.

[1]  O. Garcia,et al.  A Simple Single-Switch Single-Stage AC-DC Converter with Fast Otput Voltage regulation , 2002 .

[2]  W.M. Lin,et al.  Design of the basic rectifier with LC filter to comply with the new edition of the IEC1000-3-2 current harmonic-limit specifications (Edition 2.0) , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[3]  Milan M. Jovanovic,et al.  Design optimization of single-stage, single-switch input-current shapers , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[4]  Milan M. Jovanovic,et al.  Single-stage input-current-shaping technique with voltage-doubler-rectifier front end , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[5]  M.M. Hernando,et al.  Design of an AC-to-DC converter based on a flyback converter with active input current shaper , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[6]  M.M. Hernando,et al.  Input current shaper based on the series connection of a voltage source and a loss-free resistor , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[7]  Jose A. Cobos,et al.  A simple single-switch single-stage AC/DC power converter with fast output voltage regulation , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[8]  R. Redl.  An economical single-phase passive power-factor-corrected rectifier: topology, operation, extensions, and design for compliance , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[9]  D. E. Crow,et al.  Merits and limitations of full-bridge rectifier with LC filter in meeting IEC 1000-3-2 harmonic-limit specifications , 1997 .

[10]  Fu-Sheng Tsai,et al.  Off-line flyback converter with input harmonic current correction , 1996, Proceedings of Intelec'96 - International Telecommunications Energy Conference.

[11]  Fred C. Lee,et al.  Single-stage single-switch power-factor-correction AC/DC converters with DC-bus voltage feedback for universal line applications , 1998 .

[12]  E. Maset,et al.  Improved passive solutions to meet IEC 1000-3-2 regulation in low-cost power supplies , 1996, Proceedings of Intelec'96 - International Telecommunications Energy Conference.

[13]  A. Fernandez,et al.  Size comparison between a half bridge converter with an AICS and a two-stage boost converter operating in a narrow input voltage range , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[14]  Milan M. Jovanovic,et al.  Single-stage, single-switch, isolated power supply technique with input-current shaping and fast output-voltage regulation for universal input-voltage-range applications , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.