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:
May. 30, 2023
Filed:
Mar. 13, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
Provided is a power conversion device that does not require adaptation work and can suppress a current beat regardless of an operation state of a motor. The power conversion device includes an inverterthat converts a DC voltage into an AC voltage and drives an AC motor, and beat compensation unitsandthat suppress a current beat component of an output current of the inverter. The beat compensation unitsandinclude beat extraction units, andthat calculate beat components of the output current of the inverter, and beat compensation voltage calculation unitsandthat estimate beat compensation voltages from the beat components calculated by the beat extraction units, and. The current beat component of the output current of the inverteris suppressed based on the beat compensation voltages estimated by the beat compensation voltage calculation unitsand