Method and device for the angle sensor-free detection of the position of the rotor shaft of a permanently excited synchronous machine on the basis of current signals and voltage signals
OwnerUlrich Vollmer, Matthias Bitzerinventors
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Abstract
Disclosed are a device and a method for determining position information of the rotor shaft of an electric machine based on at least one recorded input signal of the electric machine, the recorded input signal being supplied to a model of the electric machine. The position information of the rotor shaft is determined with the aid of the model, based on the supplied input signal, the model mapping nonlinear saturation effects of the electric machine. The model of the electric machine is an extended Kalman filter in which the nonlinear saturation effects of the electric machine are described by a polynomial.
Claims12
1-11. (canceled)
A method for determining position information of a rotor shaft of an electric machine based on at least one recorded input signal of the electric machine, the method comprising:
- supplying the recorded input signal to a model of the electric machine, the model mapping nonlinear saturation effects of the electric machine;
- and
- determining the position information of the rotor shaft with the aid of the model, based on the supplied input signal.
A device configured to determine position information of a rotor shaft of an electric machine, the device comprising:
- a measuring device configured to detect at least one input signal of the electric machine,
- a model of the electric machine, the model mapping nonlinear saturation effects of the electric machine;
- and
- a computing device configured to determine the position information of the rotor shaft with the aid of the model, based on a recorded input signal supplied to the model of the electric machine.
Dependencies are inferred from the claim text.