Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-12-11
2007-12-11
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S625000, C318S375000, C318S372000
Reexamination Certificate
active
11225478
ABSTRACT:
Certain exemplary embodiments comprise a system comprising a plurality of Active Front End units adapted to be electrically coupled to a direct current (DC) bus. Each of the plurality of Active Front End units can be adapted to be electrically coupled to a separate winding of a transformer of a plurality of transformers. Each of the plurality of Active Front End units can be adapted to convert alternating current (AC) voltage to a DC voltage. Each of the plurality of Active Front End units can be adapted to supply the DC voltage to the DC bus. The DC bus can be adapted to be electrically coupled to a plurality of inverters.
REFERENCES:
patent: 3943429 (1976-03-01), Heintze
patent: 6148019 (2000-11-01), Fishman et al.
patent: 2004/0055185 (2004-03-01), Onsager et al.
patent: 2004/0223346 (2004-11-01), Rayner et al.
patent: 0520500 (1992-12-01), None
patent: WO 01/93410 (2001-12-01), None
PCT International Search Report mailed Feb. 3, 2006.
Masih Karen
Siemens Energy & Automation Inc.
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