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:
Feb. 13, 2024
Filed:
Mar. 11, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Hiroto Saotome, Hitachinaka, JP;
Masaki Hano, Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
A controller in a motor control device includes an integral operation unitA (A) that performs an arithmetic operation for a d(q)-axis integrated value I** (I**) through integral control performed on a d(q)-axis current deviation ΔI(ΔI) and is configured to perform an arithmetic operation for a d(q)-axis voltage command value for controlling an output voltage of an inverter of a three-phase brushless motor. The controller further includes a limit value arithmetic operation unitC (C) that performs an arithmetic operation for d(q)-axis integration upper and lower limit values I(I) and I(I) on the basis of a power source voltage of the inverter and the like and an integration limiting unitD (E) that limits I** (I**) within a predetermined range defined by the d(q)-axis integration upper and lower limit values.