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:
Dec. 05, 2017
Filed:
Oct. 28, 2016
Applicant:
Abb Technology Oy, Helsinki, FI;
Inventors:
Assignee:
ABB Technology Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/458 (2006.01); H02M 5/42 (2006.01); H02M 1/32 (2007.01); H02M 7/487 (2007.01);
U.S. Cl.
CPC ...
H02M 5/42 (2013.01); H02M 1/32 (2013.01); H02M 5/4585 (2013.01); H02M 7/487 (2013.01); H02M 2001/322 (2013.01);
Abstract
A method is disclosed in one embodiment for discharging DC link capacitors. In one form the method includes switching a first half bridge of a first converter unit to a positive state, in which its AC output is connected with its positive DC output, and simultaneously switching a second half bridge of a second converter unit to a negative state, in which its AC output is connected with its negative DC output, such that a DC link capacitor of the first converter unit and a DC link capacitor of the second converter unit are interconnected oppositely to each other and discharged via the electrical filter.