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:
Aug. 14, 2018
Filed:
Apr. 01, 2015
Applicant:
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 9/06 (2006.01); H02J 7/12 (2006.01); H02J 3/38 (2006.01); H02M 7/493 (2007.01); H02M 7/12 (2006.01);
U.S. Cl.
CPC ...
H02J 9/06 (2013.01); H02J 3/38 (2013.01); H02M 7/12 (2013.01); H02M 7/493 (2013.01);
Abstract
An uninterruptible power supply device (U) includes a converter (), an inverter (), a bidirectional chopper (), and a controller (). The bidirectional chopper () includes first to fourth transistors (Q-Q), first to fourth diodes (D-D), and first and second, coils (). In a charging mode, the controller () causes the first and fourth transistors (QQ) to be complementarily turned on and controls the ON period of each of the first and fourth transistors (QQ) so as to cause respective detected values of first current and second current () flowing through the first coil and the second coil () to be equal to each other.