Control system for separately excited dc motor

H - Electricity – 02 – P

Patent

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H02P 7/298 (2006.01)

Patent

CA 2231134

A microprocessor based control system generates optimal field and armature currents for a separately excited DC motor. The current levels for the field and armature coils are set by feedback control. Armature and field current setpoints are established in accordance with tabulated values selected for providing a required torque and speed in an optimal fashion. A table of corresponding values of armature voltage is also maintained. If the actual armature voltage is below the calculated value, then the field current setpoint is boosted by an amount sufficient to optimize output torque.

Système de commande par microprocesseur qui génère des courants optimaux inducteur et d'induit pour un moteur à courant continu et à excitation séparée. Les niveaux de courant pour les bobinages inducteur et d'induit sont fixés par un dispositif de commande asservi. Des valeurs de consigne de courant d'induit et inducteur sont établies selon des valeurs tabulées sélectionnées pour fournir un couple et une vitesse requis de manière optimale. Un tableau de valeurs correspondantes de la tension d'induit est également conservé. Si la tension d'induit effective est inférieure à la valeur calculée, la valeur de consigne du courant inducteur est augmentée à raison d'une quantité suffisante pour optimiser le couple de sortie.

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