FREQUENCY-CONTROLLED ELECTRIC MOTOR Russian patent published in 2007 - IPC H02P25/22 H02P27/06 

FIELD: electric engineering, possible use in frequency controlled electric motor.

SUBSTANCE: frequency controlled electric motor contains power source, frequency controlled inverters and driving electric motor, capacity filter. Power source is made in form of rectifier, in parallel to which capacity filter is connected. Driving electric motor is made of N=1,2,3,... three-phased systems of windings, each one of which is connected to N serially connected three-phased frequency-controlled inverters, which are connected to rectifier. Each frequency-controlled inverter is provided with, interconnected in parallel, stabilovolt, resistor and capacitor, which are connected in parallel to powering buses of frequency-controlled inverters. In multi-polar driving electric motors amount of three-phased windings is divisible by number of poles or pairs of poles.

EFFECT: increased reliability of frequency controlled motor.