DC MULTI-MOTOR ELECTRIC DRIVES CONTROL DEVICE Russian patent published in 2014 - IPC B60L15/04 

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises relay wires and motor current transducer, master element, motor angular velocity transducer and comparator. Comparator output signal varies with angular velocity deflection Ω_i from magnitude Ω₀. Additionally, this device incorporates logical unit connected with master element and angular velocity transducer. Electric drive power circuit varies in compliance with the algorithm: Ω₀>0 and Ω≥0 - forward motion; Ω₀<0 and Ω≤0 - backward motion; abs(Ω₀)-abs(Ω)>0 - motor mode; abs(Ω₀)-abs(Ω)<0 - brake mode; Ω₀=0 and Ω=0 - shutdown. Angular velocity transducer is equipped with output signal modulus isolation module.

EFFECT: automatic levelling current loads, simplified design.

1 dwg