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:
Nov. 27, 2012
Filed:
Dec. 10, 2010
Applicants:
Akira Sasaki, Kitakyushu, JP;
Shoichiro Shimoike, Kitakyushu, JP;
Inventors:
Akira Sasaki, Kitakyushu, JP;
Shoichiro Shimoike, Kitakyushu, JP;
Assignee:
Kabushiki Kaisha Yaskawa Denki, Kitakyushu-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 27/00 (2006.01); H02H 5/04 (2006.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
An inverter apparatus according to the invention includes a heat sink, an inverter that includes a semiconductor device and that is attached to the heat sink, detectors that detect the temperature of the inverter, an estimator that calculates estimated values of the thermal resistance and the thermal capacity of the heat sink on the basis of the temperature detected by the detectors, and a controller that controls driving of the inverter on the basis of the estimated values.