Patent ID: 6246192
Filing Date: 2001-06-12
Classification: H02P

Abstract:
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 thatthe 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.