DEVICE FOR AUTOMATIC EVALUATION AND CONTROL OF CONSUMPED POWER OF TRACTION MOTORS OF URBAN ELECTRIC TRTANSPORT Russian patent published in 2007 - IPC B60L15/20 

FIELD: transport engineering; urban electric transport.

SUBSTANCE: invention relates to devices for automatic evaluation and control of power consumption of traction motors. Proposed contains switching relay unit connected to traction motor control circuit whose outputs are connected to output stages of analog-digital calculator built around AND, OR, NOT gates inputs of which are wheelset angular velocities pickup and data from driver's controller. Moreover, it is furnished with peak detector to direct input of which wheelset angular speed pickup is connected through second trimmer resistor and first matching (buffer) stage, and to output of peak detector direct input of third differential comparator is connected to output of which second of two inputs of first AND gate and second of three inputs of second AND gate are connected. Output signal Urv1 from output of reference voltage forming circuit is connected to inverting input of first differential comparator, direct input of second differential comparator is grounded, one of outputs of paired differential comparator is connected through first inverter to third input of second AND gate whose output signal is command k3 getting to third control relay of traction motors. Output signal of third AND gate is command k2 getting to second control relay of traction motors. First control relay of traction motors included into switching relay unit connects first and second traction motors at running out and braking.

EFFECT: provision of automatic evaluation and control of consumed power of vehicle traction motors, considerable reduction power consumption.

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