Sorry - industrial motor drives, frequency converters, or other AC-AC converters didn't occur to me as the source of the question, since I don't consider them "inverters". They are AC-AC converters containing DC-AC inverters. (IMHO).
Ahh the joys of semantics. Jim Eichner, P.Eng. Xantrex Technology Inc. e-mail: [email protected] web: www.xantrex.com Any opinions expressed are those of my invisible friend, who really exists. Honest. No really. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, September 13, 2002 3:36 AM To: Jim Eichner; [email protected] Subject: RE: harmonic current on inverters for industrial uses in Japan Most of the industrial inverters draw harmonics current from the AC power supply, and this input current is independent of the inverter current. The input stage (that converts AC to DC) is usually a diode bridge rectifier. Günter J. Maass Researcher - Power Electronics Development EMBRACO S.A. Jim Eichner <[email protected] To: "EMC-PSTC (E-mail)" <[email protected]> om> cc: Sent by: Subject: RE: harmonic current on inverters for industrial uses in Japan owner-emc-pstc@majordo mo.ieee.org 12/09/2002 22:45 Please respond to Jim Eichner Minor correction of myself. Of course inverters draw harmonic current, from their DC source: harmonics of the inverter's internal switching frequency. What I meant was inverters don't draw the type of harmonic currents that have been the subject of new regulations over the past few years (EN61000-3-2 etc). Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: [email protected] web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -----Original Message----- From: Jim Eichner [mailto:[email protected]] Sent: Thursday, September 12, 2002 10:43 AM To: 'POWELL, DOUG'; EMC-PSTC (E-mail) Subject: RE: harmonic current on inverters for industrial uses in Japan Hi Doug: Please let me know what you find out on this. I recently came across a reference to inverters, in searching the JEITA site for harmonic current limitation standards. That didn't make sense to me: an inverter is a DC-AC converter that has no connection to an AC source and draws no harmonic current. The only thing I could think of is that maybe they were on about harmonic content of the output, not the input. If so, I hope they are talking about voltage, because the harmonic content in the output current will depend upon the nature of the load. Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: [email protected] web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -----Original Message----- From: POWELL, DOUG [mailto:[email protected]] Sent: Thursday, September 12, 2002 7:58 AM To: EMC-PSTC (E-mail) Subject: harmonic current on inverters for industrial uses in Japan Hello esteemed colleagues, I am searching for an English language version of a report writtne in Japanese, I already have the title translated: "Calculation methods of harmonic current on inverters for industrial uses." JEM- TR 201 Can enayone help with location of this report in English? thank you so much, -doug ----------- Douglas E. Powell, Compliance Engineer Advanced Energy Industries, Inc. Mail stop: 203024 1626 Sharp Point Drive Ft. 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