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:
Oct. 19, 2004
Filed:
May. 06, 2002
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 7/28 ; H02P 6/00 ; H02P 9/14 ; G05F 5/04 ;
U.S. Cl.
CPC ...
H02P 7/28 ; H02P 6/00 ; H02P 9/14 ; G05F 5/04 ;
Abstract
A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to the power-system bus via an impedance load, a driver axially coupled to the rotor to drive the rotor, and a controller which gives the driver a command value to adjust the phase difference between the stator and the rotor to a desired value.