Method for defining quadrature-axis magnetizing inductance...

Details Method for defining quadrature-axis magnetizing inductance... Method for defining quadrature-axis magnetizing inductance...

2006-01-10

2006-01-10

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

C318S700000, C318S721000, C318S719000, C318S801000, C318S799000

Reexamination Certificate

active

06984958

ABSTRACT:
Method for defining quadrature-axis magnetizing inductance of a synchronous machine, the synchronous machine being supplied by an inverter. The method comprises steps, wherein the synchronous machine is started without load or with reduced load; the rotor current of the synchronous machine is kept substantially at zero, the synchronous machine is accelerated to initial angular velocity of measurement, the load angle (ds) of the synchronous machine is guided substantially to 90 degrees, the stator voltage (us), the stator current (is) and the electrical angular velocity (?) of the synchronous machine is defined and the quadrature-axis magnetizing inductance of the synchronous machine (lmq) is defined on the basis of the stator voltage (us), the stator current (is) and the electrical angular velocity (?) of the machine.

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patent: 5608300 (1997-03-01), Kawabata et al.
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