Motor driving device

Details Motor driving device Motor driving device

1990-12-07

1992-09-22

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318807, H02P 534

Patent

active

051500302

ABSTRACT:
A motor driving device for a motor having a rotor and a plurality of excitation coils includes a detector for detecting a rotation position of the rotor, a controller for performing closed-loop control of the switching timing for excitation currents applied to the excitation coils according to detection signals from the detector, and drive control circuits for controlling the current supplied to the excitation coils in accordance with an output from the controller. The drive control means includes a plurality of pulse-width modulation signal generators for controlling current passing through the excitation coils.

REFERENCES:
patent: 4310791 (1982-01-01), Akamatsu
patent: 4312031 (1982-01-01), Kudor
patent: 4488101 (1984-12-01), Studtmann
patent: 4928050 (1990-05-01), Torisawa et al.
patent: 4963808 (1990-10-01), Torisawa et al.
patent: 5029264 (1991-07-01), Ito et al.

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