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:
Nov. 15, 2022
Filed:
Jul. 25, 2017
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Masahiro Nigo, Tokyo, JP;
Yuji Hirosawa, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 25/18 (2006.01); F25B 49/02 (2006.01); H02K 1/14 (2006.01); H02K 1/276 (2022.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
H02P 25/18 (2013.01); F25B 49/025 (2013.01); H02K 1/146 (2013.01); H02K 1/276 (2013.01); H02P 27/08 (2013.01);
Abstract
A driving device includes an inverter to output a voltage to coils, a connection switching unit to switch a connection state of the coils between a Y connection and a delta connection, and a controller. The controller causes the inverter to stop outputting, when the connection state of the coils is the Y connection and a current value of the inverter reaches a first threshold A, or when the connection state of the coils is the delta connection and the current value of the inverter reaches a second threshold B. The first threshold A and the second threshold B satisfy B<√3×A.