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:
Mar. 10, 2015
Filed:
Sep. 18, 2012
Applicant:
Siemens Corporation, Iselin, NJ (US);
Inventor:
Liviu Mihalache, Evans City, PA (US);
Assignee:
Siemens Corporation, Iselin, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/122 (2006.01); H02M 7/537 (2006.01); H02M 7/5395 (2006.01); H02M 7/49 (2007.01); H02M 7/48 (2006.01); H02M 1/00 (2006.01); H02M 1/32 (2007.01); H02M 7/483 (2007.01);
U.S. Cl.
CPC ...
H02M 7/537 (2013.01); H02M 7/5395 (2013.01); H02M 7/49 (2013.01); H02M 2001/0012 (2013.01); H02M 2001/0025 (2013.01); H02M 2001/325 (2013.01); H02M 2007/4835 (2013.01);
Abstract
A cascaded multi-level inverter is controlled in fault bypass operation. Rather than relying on approximations or feedback forms, the reference voltages are generated as an analytic solution. The analytic solution and its implementation are not affected by the output frequency of the inverter and it is able to provide maximum possible balanced line-line voltage to a three-phase motor. In addition, the analytic solution provides exact limits for the allowable operation region of the motor power factor in order to prevent overvoltage conditions of the cell inverter.