The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2017
Filed:
May. 05, 2015
Applicant:
Vacon Oyj, Vaasa, FI;
Inventor:
Nicklas Södö, Vaasa, FI;
Assignee:
VACON OY, Vaasa, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/04 (2006.01); H02P 3/00 (2006.01); H02M 1/12 (2006.01); H02M 5/458 (2006.01); H02M 1/08 (2006.01); H02M 5/27 (2006.01); H02P 23/26 (2016.01);
U.S. Cl.
CPC ...
H02M 1/12 (2013.01); H02M 1/08 (2013.01); H02M 5/27 (2013.01); H02M 5/458 (2013.01); H02P 23/26 (2016.02); H02M 2001/123 (2013.01);
Abstract
A method and an arrangement for limiting the interference to a common electric power network, generated by a power electronics device, e.g. a frequency converter, which power electronics device comprises of at least one switch type component being able to change the output voltage value at a predefined permissible switching frequency range. The method comprises scanning through the permissible switching frequency range, recording measured common mode current values as a function of the switching frequency, and setting the final switching frequency of the switch type component out of a value where a local maximum value of the common mode current has been recorded.