Motor control apparatus

Details Motor control apparatus Motor control apparatus

2005-05-31

2005-05-31

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S700000, C318S714000, C318S715000, C318S718000, C318S800000, C318S801000

Reexamination Certificate

active

06900613

ABSTRACT:
A motor control apparatus includes a phase current detecting section for detecting phase currents to a motor, a current phase/current peak value calculating section for calculating a current phase based on the phase currents, a voltage phase setting section for adding a predetermined phase difference to the current phase and setting the resultant sum as a voltage phase, a phase voltage setting section for setting phase voltages to the motor based on the voltage phase and the command voltage. Basically, the motor is operated by maintaining the voltage at constant and always monitoring the current/voltage phases so as to maintain a constant phase difference, without the motor axis position being predicted.

REFERENCES:
patent: 5726549 (1998-03-01), Okuno et al.
patent: 5903128 (1999-05-01), Sakakibara et al.
patent: 5903129 (1999-05-01), Okuno et al.
patent: 6281656 (2001-08-01), Masaki et al.
patent: 6583593 (2003-06-01), Iijima et al.
patent: 2000350489 (2000-12-01), None
patent: 2001251889 (2001-09-01), None
patent: 2001268974 (2001-09-01), None

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