H - Electricity – 02 – P
Patent
H - Electricity
02
P
318/103, 318/22
H02P 21/14 (2006.01) H02P 21/10 (2006.01)
Patent
CA 1304775
ABSTRACT OF THE DISCLOSURE An angle is calculated with high time resolution for the field angle of a rotating-field machine in order to control the rotating-field machine. Due to the inertia of the system, the speed of rotation of the field vector changes slowly. A microprocessor reads the measured values of current and voltage only at a slow rate (tµ). The values are processed into the components of an EMF vector which is converted as to magnitude (?) and a discontinuously changing value (.omega.) for the frequency of a flux vector or the EMF vector. A hardware integrator (INT1) is coupled to the microcomputer and furnishes a quasi- continuously changing signal (?) for the field angle at a high computing rate under the control of the discontinuously changing value (.omega.) of the flux vector.
566352
Reng Leonhard
Schlegel Thomas
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
Reng Leonhard
Schlegel Thomas
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