Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-05-16
2006-05-16
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S786000, C318S430000
Reexamination Certificate
active
07045987
ABSTRACT:
An arrangement and a method for starting a slip-ring machine, the arrangement comprising a frequency converter arranged to be connected between a supply network and a rotor of the slip-ring machine for controlling the slip-ring machine, and starting means for starting the slip-ring machine. The starting means are arranged between the frequency converter and the rotor of the slip-ring machine, whereby the frequency converter is arranged to control the magnitude of the current of the rotor of the slip-ring machine in connection with starting the slip-ring machine.
REFERENCES:
patent: 3683251 (1972-08-01), Pisecker
patent: 6448735 (2002-09-01), Gokhale et al.
patent: 297 16 971 (1998-01-01), None
patent: 1076228 (1967-07-01), None
patent: 2 011 198 (1978-12-01), None
ABB Oy
Dykema Gossett PLLC
Masih Karen
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