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:
Sep. 16, 2014
Filed:
Oct. 24, 2011
Takashi Kawashima, Kariya, JP;
Kazuki Najima, Kariya, JP;
Fumihiro Kagawa, Kariya, JP;
Motonobu Funato, Kariya, JP;
Takashi Kawashima, Kariya, JP;
Kazuki Najima, Kariya, JP;
Fumihiro Kagawa, Kariya, JP;
Motonobu Funato, Kariya, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi-Ken, JP;
Abstract
A motor controller for a motor-driven compressor includes a compressing body for compressing and discharging a refrigerant and a motor including a rotary shaft, the motor for driving the compressing body through the rotary shaft. A coil of the motor is arranged in a refrigerant containing area in the motor-driven compressor. The motor controller includes a determining section for determining whether liquid refrigerant is present in the refrigerant containing area and a modulation control section for driving the motor in accordance with three phase modulation control or two phase modulation control based on a determination result of the determining section.