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. 16, 2021
Filed:
Jul. 28, 2017
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Yuji Hirosawa, Tokyo, JP;
Masahiro Nigo, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/00 (2016.01); H02P 27/08 (2006.01); H02P 6/04 (2016.01);
U.S. Cl.
CPC ...
H02P 6/006 (2013.01); H02P 27/08 (2013.01); H02P 2006/045 (2013.01);
Abstract
A driving device includes a connection switching unit that switches connection condition of a coil between Y connection and delta connection, an inverter, and a control device that controls a carrier frequency of the inverter. The carrier frequency is set at a first carrier frequency when the connection condition of the coil is the Y connection. The carrier frequency is set at a second carrier frequency when the connection condition of the coil is the delta connection.