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:
Jul. 14, 2015
Filed:
Dec. 02, 2010
Tetsuo Sugahara, Tokyo, JP;
Tetsuo Sugahara, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
In a power conversion apparatus that is configured to cool switching elements by using a boiling-refrigerant-type cooling device that uses a boiling phenomenon of a refrigerant included therein, an inverter control unit that controls the switching elements (Su to Sz) by generating a gate command capable of stabilizing boiling of the refrigerant includes a modulation-mode selection unit that determines stability of the cooling device based on an element-temperature estimation value that is an estimated temperature of the switching elements (Su to Sz), and that decides and selects a modulation mode PM for controlling the switching elements (Su to Sz) based on a determination result, and a gate-command generation unit that generates a gate command G based on the modulation mode PM selected by the modulation-mode selection unit.