Method and apparatus for estimating rotor angle of synchronous reluctance motor
A method of estimating a rotor angle of a synchronous reluctance motor, where the motor comprises a stator and a rotor. First, a stator flux and a stator current are determined. Two orthogonal stator flux components in a stator reference frame are calculated from the stator flux. Two orthogonal stat...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method of estimating a rotor angle of a synchronous reluctance motor, where the motor comprises a stator and a rotor. First, a stator flux and a stator current are determined. Two orthogonal stator flux components in a stator reference frame are calculated from the stator flux. Two orthogonal stator current components in the stator reference frame are calculated from the stator current. Two rotor orientation vectors are then calculated using a known rotor direct and quadrature axis inductance components, the stator flux components, and the stator current components. A rotor angle is estimated on the basis of the rotor orientation vectors. |
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