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. 23, 2005
Filed:
Oct. 11, 2002
Robert J. Nelson, Orlando, FL (US);
Dennis Perttula, Orlando, FL (US);
Stephen Cates, Oviedo, FL (US);
Aaron Staley, Sanford, FL (US);
Robert J. Nelson, Orlando, FL (US);
Dennis Perttula, Orlando, FL (US);
Stephen Cates, Oviedo, FL (US);
Aaron Staley, Sanford, FL (US);
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Abstract
A dynamoelectric machine combining the functions of an exciter, a turning motor, and a starting motor for a turbine. The machine operates in a first mode where the slip between a first stator winding and a first armature winding is positive and thus the magnetic fields interact and operate as a motor to turn the turbine. In a second mode the slip is negative as the turbine turns the shaft and the first stator winding and the first armature operate as an exciter for supplying excitation to the rotating field winding of a main generator.