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. 05, 2023
Filed:
Sep. 29, 2020
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Takahiro Yokoyama, Osaka, JP;
Takayuki Miyajima, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 23/03 (2006.01); H02P 23/14 (2006.01);
U.S. Cl.
CPC ...
H02P 23/03 (2013.01); H02P 23/14 (2013.01); H02P 2207/05 (2013.01);
Abstract
A motor drive method is a method of driving a motor by a motor drive apparatus. The motor drive apparatus includes an inverter that regulates supplied power to the motor that is a position sensorless synchronous machine, and includes a controller that outputs a control signal to control the inverter. The method includes reducing output torque of the motor to be less than maximum output torque, in a speed range that is lower than a first speed at which the motor rotates. The maximum torque that is output from the motor is the maximum output torque in a case the motor drive apparatus drives the motor.