Electricity: motive power systems – Induction motor systems – Secondary circuit control
Reexamination Certificate
2005-03-22
2005-03-22
Martin, David (Department: 2837)
Electricity: motive power systems
Induction motor systems
Secondary circuit control
C318S821000
Reexamination Certificate
active
06870348
ABSTRACT:
An induction machine includes a rotor having rotor flux and a rotor resistance. The induction machine outputs first and second reference current values. A control system includes a first controller that outputs first and second reference voltage values to the induction machine and that generates an estimated rotor flux magnitude value based on a rotor resistance parameter. A computation circuit receives the first and second reference current values from the induction machine and the first and second voltage reference values from the first controller and calculates an actual rotor flux magnitude. A rotor resistance adjustor that updates the rotor resistance parameter based on the actual and estimated rotor flux magnitudes.
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Hiti Silva
Mijalkovic Milan S.
Nagashima James M.
Stankovic Aleksandar M.
DeVries Christopher
General Motors Corporation
Martin David
Miller Patrick
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