Energy saving analysis of the motor during use
This paper mainly analyzes the composition of energy loss during the use of the motor, and focuses on how to reduce the mechanical loss of the motor during operation to achieve energy saving and efficiency.
1. Asynchronous motor energy loss composition
(1) Copper loss: stator copper loss; rotor copper loss; stray loss.
(2) Core loss.
(3) Mechanical loss: ventilation loss; friction loss.
From the energy loss of the asynchronous motor listed above, copper loss and iron loss are not easily changed during maintenance. They are determined by design, and mechanical loss can be changed. Asynchronous motors generally have a large number of stages, that is, a motor with a high number of revolutions, which has a large mechanical loss and a small copper loss. A motor with a large number of stages, that is, a motor with a low number of revolutions, has a larger copper loss than a mechanical loss. Therefore, we need to reduce the mechanical loss of the motor to reduce the mechanical loss of the motor.
2. The main method to reduce the mechanical loss of the motor
Reducing the mechanical loss of the motor is mainly solved from the following aspects:
(1) Use a highly efficient fan (such as a wing-type axial fan).
(2) Adjust the gap between the hood and the outer circumference of the blade.
(3) The light load motor appropriately reduces the outer diameter of the fan.
(4) Use high quality bearings.
(5) Use high quality lubricants.
(6) Improve the assembly quality of the motor.
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