VEHICLE ELECTRIC DRIVE CONTROL SYSTEM Russian patent published in 2019 - IPC H02P21/12 H02P25/62 B60L15/08 B60W50/08 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and transport and can be used as a control system for electric drive of a unified machine for process electric transport. Control system contains asynchronous electric motor, to which inverter is connected, which converts DC to AC voltage with controlled frequency and controlled voltage in the mode of pulse-width modulation. Control system is made in the form of microprocessor system, power output of which is connected to inverter. Microprocessor system comprises first, second and third analogue measuring inputs, as well as first, second, third and fourth digital measurement inputs. Ammeter measuring phase currents at inverter output is connected to first analogue measuring input, output of voltmeter measuring DC voltage at power output is connected to second analogue input, and the third analogue measuring input is connected to the vehicle accelerator potentiometer output. First digital measuring input is connected to the first channel of the encoder mounted on the electric motor shaft; the second measuring input is connected to the second channel of the encoder, and to the third and fourth digital measuring inputs, respectively, sensors for connecting the main and parking brakes are connected; in addition to the microprocessor system, a control unit is made, which is made in the form of an LCD-indicator and a data input unit.

EFFECT: technical result is improvement of quality control of asynchronous electric motor rotor speed.

1 cl, 2 dwg