Electricity: motive power systems – Induction motor systems
Reexamination Certificate
2005-06-14
2005-06-14
Martin, David (Department: 2837)
Electricity: motive power systems
Induction motor systems
C318S806000, C318S132000, C318S434000, C318S432000, C180S410000, C180S443000
Reexamination Certificate
active
06906492
ABSTRACT:
A motor abnormality detection apparatus is capable of performing the abnormality detection of a motor (5) without supplying a special electric current thereto for abnormality detection in an ordinary control state. A motor control device (100) controls the motor (5) through vector control which is described by a two-phase rotating magnetic flux coordinate system having the direction of a field current as a d-axis direction and a direction orthogonal to the d-axis direction as a q-axis direction. A motor abnormality detection part (100h) (100h) performs an abnormality determination of the motor based on target impression voltages (Vd*, Vq*) impressed on the motor (5).
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Colon Santana Eduardo
Martin David
Mitsubishi Denki & Kabushiki Kaisha
Sughrue & Mion, PLLC
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