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:
Mar. 31, 2020
Filed:
Oct. 01, 2018
Nidec Corporation, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A motor drive control device that drives and controls a motor by using a PWM inverter includes a dead time compensation portion that obtains a compensation amount to compensate for an error of an output voltage of the PWM inverter generated when a dead time to avoid simultaneous turning-on of respective switching elements mutually connected in series in the PWM inverter is prepared and outputs a voltage command obtained by taking the compensation amount into account to the PWM inverter. The dead time compensation portion obtains the compensation amount based on a magnitude of a current command vector indicating a vector of a current to be followed by a current flowing through the motor. The current command vector is a vector defined by a coordinate system in synchronism with a rotor of the motor or its equivalent coordinate system.