ALTERNATING CURRENT ELECTRIC DRIVE Russian patent published in 2004 - IPC

FIELD: electric drives engineering.

SUBSTANCE: device has asynchronous engine with phase rotor, winding of rotor of which is connected to input of diode bridge rectifier, outputs of which are connected to three-phase adjusting device. Each phase of asynchronous engine consists of serially connected diode and two controlled valves. Outputs of power network are connected to point of connection of diode cathode and controlled valve anode. Phase windings of stator of engine are connected to points of connection of cathode and anode of two controlled valves. Cathode output of adjusting device is connected to anode output of diode bridge rectifier, cathode output of which is connected to anode output of adjusting device through smoothing reactor. To outputs of engine stator winding three condensers are connected in parallel, linked in a triangle, controlling electrodes and anodes of each of controlled valves of adjusting device are connected to respective outputs of control impulses forming block, and three-phase input of control impulses forming block is connected to power network.

EFFECT: reliable adjustment of engine torque and better energy effectiveness.

5 dwg