Method and apparatus for controlling synchronous motor

Details Method and apparatus for controlling synchronous motor Method and apparatus for controlling synchronous motor

2006-04-11

2006-04-11

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S700000, C318S711000, C318S714000, C318S717000

Reexamination Certificate

active

07026782

ABSTRACT:
An apparatus is provided for controlling a synchronous motor. The apparatus comprises a first calculator calculating a voltage characteristic showing a characteristic of voltages to be applied to armature coils of a stator and a producer producing a command signal to provide the armature coils with the phase currents on the basis of the voltage characteristic. The apparatus still comprises a current detector detecting a signal depending on an amplitude of at least one of the phase currents, a second calculator calculating a rate of changes in a current amount indicating amplitudes of the phase currents, by using the signal from the current detector, and a feed-back member feed-backing the rate of changes in the current amount into the calculation of the voltage characteristic.

REFERENCES:
patent: 2005/0077793 (2005-04-01), Garvey et al.
patent: 2005/0110452 (2005-05-01), Toyozawa et al.
patent: A 2004-064860 (2004-02-01), None

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