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. 12, 2013
Filed:
May. 01, 2012
Ryuta Hasegawa, Hino, JP;
Hiroshi Mochikawa, Hachioji, JP;
Masami Hirata, Yokkaichi, JP;
Yukihiko Hatano, Ichinomiya, JP;
Ryuta Hasegawa, Hino, JP;
Hiroshi Mochikawa, Hachioji, JP;
Masami Hirata, Yokkaichi, JP;
Yukihiko Hatano, Ichinomiya, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An inverter apparatus according to one embodiment includes switching elements and freewheel diodes which are connected to a direct-current power supply, a temperature detector provided near at least one of the switching elements, and a temperature estimation unit. The temperature estimation unit estimates temperatures of switching elements not provided with the temperature detector, based on an estimated-temperature increase value calculated by a loss model of the switching elements and freewheel diode and others, and a temperature of the switching element detected by the temperature detector.