Electronic drive system
First Claim
1. Electrical drive system comprising a plurality of differently located AC motors having no slip rings and no commutator, the stator of said motors being designed in such manner that it is adapted to generate a magnetic rotating field, comprising further an electrical conductor network for feeding electrical energy from a current source to the AC motors and comprising a control system which includes control units allocated to the respective AC motors,characterized in that the control system comprises a central control station coupled with the electrical conductor network for generating of coded control signals, as well as control signal receivers located with the respective AC motors, said control signal receivers respectively comprising a decoder and a pulse generator unit, said pulse generator unit feeding pulses to the stator winding of the respective AC motor, the relative phase position of said pulses being controllable by said control signals of said central control station fed to said pulse generator unit in such manner that the rotating speed of the rotating field is controllable.
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Accused Products
Abstract
In an electrical drive system an increased electromagnetic compatibility is achieved by used of AC rotating motors having no commutator and no slip rings as driving motors, whereby a simplified structure of the drive system and of the control of the drive is achieved in that, particularly plural phased stator windings of the AC motors are pulsewise controlled by use of plural channel control whereby the rotation speed of the respective rotating magnetic field of the AC motors is controlled.
26 Citations
13 Claims
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1. Electrical drive system comprising a plurality of differently located AC motors having no slip rings and no commutator, the stator of said motors being designed in such manner that it is adapted to generate a magnetic rotating field, comprising further an electrical conductor network for feeding electrical energy from a current source to the AC motors and comprising a control system which includes control units allocated to the respective AC motors,
characterized in that the control system comprises a central control station coupled with the electrical conductor network for generating of coded control signals, as well as control signal receivers located with the respective AC motors, said control signal receivers respectively comprising a decoder and a pulse generator unit, said pulse generator unit feeding pulses to the stator winding of the respective AC motor, the relative phase position of said pulses being controllable by said control signals of said central control station fed to said pulse generator unit in such manner that the rotating speed of the rotating field is controllable.
Specification