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US 2022/0038038 A1Published application
Method for determining the magnetic flux of an electric machine
AssigneeIfp Energies Nouvelles
InventorsHoai-Nam NGUYEN, Gianluca ZITO
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Abstract
The present invention relates to a method of determining the magnetic flux φ of an electric machine, based on measurements (MES) of currents and voltages in the phases of the electric machine, on a dynamic model (MOD) of the magnetic flux and on an adaptive Kalman filter (KAL).
Claims18
A method of determining magnetic flux of an electric machine, the electric machine comprising a rotor, a stator, the stator comprising windings connected to electric phases, comprising steps of:
- a) measuring a current and a voltage in the phases of the electric machine,
- b) determining the electrical rotational speed of the rotor, as a function of mechanical rotational speed of the rotor;
- c) constructing a dynamic model of the magnetic flux of the electric machine, the dynamic model of the magnetic flux connecting the magnetic flux to the current and to the voltage of the electric phases of the electric machine, and to the electrical rotational speed of the rotor;
- and
- d) determining the magnetic flux φ by applying an adaptive Kalman filter to the dynamic magnetic flux model, the dynamic magnetic flux model being applied to the current and voltage measurements and to the determined electrical rotational speed.
2 more elements
Dependencies are inferred from the claim text.