DEVICE FOR SHAPING COMMUTATING FIELD OF COMMUTATOR MACHINE Russian patent published in 2005 - IPC

FIELD: electrical engineering; commutator machines.

SUBSTANCE: proposed device designed for use in commutator machines provided with compensating winding, commutating poles, and any type of excitation has main poles, commutating poles, compensating winding, and armature current sensor; novelty is that in order to improve commutation in any transient mode of operation of electrical machine due to shaping desired commutating field for slot residing in commutation zone, control unit selects adequate mechanism to change task for pulse-width converters feeding commutating poles whose coils are wound on external magnetic system for which purpose control unit processes signals arriving from armature current sensor and from rotor position and speed sensor read out for moment when previous slot was in commutation zone. Commutating pole shoes do not need changing their shape.

EFFECT: enhanced commutating capacity for any mode of operation and brush gear condition; dispensing with complex calculation methods.

1 cl, 3 dwg