The dynamics of the rotary vane pumps starting from the asynchronous motor with the ball-bearings

Authors: Tkachuk V.V., Protopopov A.A., Yakovich S.M.
Published in issue: #7(24)/2018
DOI: 10.18698/2541-8009-2018-7-346
Category: Power, Metallurgic and Chemical Engineering | Chapter: Hydraulic Machines and Hydropneumatic units
Keywords: pump, overheat, mathematical model, electric motor, the starting dynamics, temperature, current force, winding
Published: 30.07.2018

The paper considers the mathematical model describing the dynamics of the electric motor starting in the pumping unit. We point out the main factors allowing to determine the overheat temperature of the electric motor, justify their interrelationship and calculate the parameters of the pump. In most cases the principal cause of the electric motors failure is overheat of the rotor winding and the stator. The winding temperature, in its turn, is determined by the current force required to generate the target value of torque on the motor shaft, and the power of motor directly depends on the parameters of the pump. According to this data we can conclude that relatively small increase of the insulator temperature has an essential impact on the durability of the electric motor.

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