Rotor position estimator for a switched reluctance machine using

Details Rotor position estimator for a switched reluctance machine using Rotor position estimator for a switched reluctance machine using

1991-02-11

1992-04-21

Shoop, Jr., William M.

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318254, 318721, H02F 800

Patent

active

051071959

ABSTRACT:
A method and apparatus for indirectly determining rotor position in a switched reluctance motor (SRM) are based on a flux/current model of the machine, which model includes multi-phase saturation, leakage, and mutual coupling effects. The flux/current model includes a network mesh of stator, rotor and air gap reluctance terms. The network is driven by magnetomotive force (mmf) terms corresponding to the ampereturns applied to each of the stator poles. Phase current and flux sensing for each phase are performed simultaneously. The reluctance terms of the flux/current model are determined from the phase flux and current measurements. The phase current and flux measurements also determine the rotor position angle relative to alignment for each respective motor phase and which phase (or phases) is operating in its predetermined optimal sensing region defined over a range of rotor angles. The measurements on at least two phases are then used for establishing whether the stator phases of the sensing phase are approaching alignment or maximum unalignment with SRM rotor poles. Finally, the rotor position angle for the sensing phase and its position relative to alignment are used to provide a rotor position estimate for the motor.

REFERENCES:
patent: 4584506 (1986-04-01), Kaszmann
patent: 4739240 (1988-04-01), MacMinn et al.
patent: 4772839 (1988-09-01), MacMinn et al.
patent: 4896089 (1990-01-01), Kliman et al.
patent: 4933620 (1990-06-01), MacMinn et al.
patent: 4959596 (1990-09-01), MacMinn et al.
patent: 4961038 (1990-10-01), MacMinn et al.
patent: 4990843 (1991-02-01), Moren et al.

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