System and method for optimally driving a DC motor

Details System and method for optimally driving a DC motor System and method for optimally driving a DC motor

1992-08-28

1994-08-02

Wysocki, Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318439, H02P 700

Patent

active

053349172

ABSTRACT:
Method and a device in a drive system for a DC-motor including an inverter and a multiple phase synchronous motor with a permanent magnet rotor, and provided with a rotor position detection means in order to generate a rotation dependent logical position signal or signals. An optimization is carried out, which is based on the rotation dependent logical signals (POS1, POS2, POS3) from said rotor position detection means whereby the commutation points each are displaced such, that at said optimization minimum input current is detected to eliminate poor operation caused by unsymmetries in the motor iron or windings as well as unsymmetries of the rotor magnet and thereby optimize motor performance with respect to e.g. efficiency at present velocity and load, maximum acceleration and motor vibrations.

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Perret et al., "Minimization of torque ripple in brushless DC motor drivers", Oct. 11, 1985, IEEE-IAS Annual Meeting, p. 790.

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