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. 03, 2020
Filed:
May. 11, 2018
Abb Schweiz Ag, Baden, CH;
Chenjie Lin, Fuquay Varina, NC (US);
Ghanshyam Shrestha, Cary, NC (US);
Mehanathan Pathmanathan, Västeräs, SE;
Pedro Rodriguez, Västeräs, SE;
Pasi Paloheimo, Vantaa, FI;
Tuomas Janhunen, Vantaa, FI;
Susanna Bäckström-Andersson, Helsinki, FI;
Eino Silander, Klaukkala, FI;
ABB Schweiz AG, Baden, CH;
Abstract
Unique systems, methods, techniques and apparatuses of a rotating DC power supply are disclosed. One exemplary embodiment includes a first and second DC bus rail, a first and second leg, and a discharge resistor. The first leg includes a first semiconductor device and a second semiconductor device coupled in series at a first midpoint connection, the first semiconductor device being coupled to a first point on the first DC bus rail and the first midpoint connection being coupled to a field winding. The second leg includes a third semiconductor device and a fourth semiconductor device coupled in series at a second midpoint connection, the third semiconductor device being coupled to a second point on the first DC bus rail and the second midpoint connection being coupled to the field winding. The discharge resistor is operatively coupled to the first DC bus rail between the first point and the second point.