AUTOMATIC COMBINED MICROPROCESSOR CONTROLLER OF THERMAL MACHINE TEMPERATURE WITH ELECTRIC DRIVE OF FAN Russian patent published in 2013 - IPC F01P7/02 H02K17/14 

FIELD: machine building.

SUBSTANCE: controller comprises a temperature sensor of a thermal machine, a thermal machine capacity sensor and a cooling air temperature sensor, a cooling fan, a control device of a fan drive. The shaft of the thermal machine is connected with a shaft of a synchronous generator. The shaft of the cooling fan is connected with the shaft of the four-speed induction motor with a short-circuited rotor and with a pole-switched stator winding. The stator winding comprises 24 coil groups. Coil groups are connected with eight switches of coil groups and a switch of motor connection with the stator winding of the synchronous generator. The thermal machine temperature sensor is connected to the first comparing device. The thermal machine capacity sensor and the cooling air temperature sensor are connected with the second and third comparing devices by means of the first and second devices of correction of static characteristics of sensors. The first, second and third comparing devices are connected accordingly with the first, second and third setting devices and a summation device. The summation device is connected to the control device of the fan drive.

EFFECT: increased reliability of a temperature control system electric drive.

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