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:
Apr. 26, 2016
Filed:
Nov. 22, 2012
Ntn Corporation, Osaka, JP;
Takayoshi Ozaki, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
An inverter is provided with a temperature sensor for detecting the temperature of the inverter. A plurality of threshold values are set up for the temperature detected by the temperature sensor, electric current restricting conditions different from each other are set up for each of the temperature regions sorted out by each threshold value, and an inverter restricting unit for applying a restriction to an electric current command applied to the inverter in dependence on the electric current restricting condition of the temperature region, in which the detected temperature is included. Without the drivability of an automobile being disturbed, by means of a temperature control of the inverter, not only are any change in characteristic and impairment, resulting from an overheating thereof, prevented, but also an undesirable reduction of the life of the inverter is avoided.