Optimization measures for reducing losses of high-efficiency motors:

As we all know, the loss of motor is mainly composed of stator copper loss, rotor copper loss, iron loss, mechanical loss and leakage. The development of high-efficiency and high-efficiency motors must start with reducing these five losses and take a variety of measures to give full play to their potential. Reduce losses and improve motor efficiency.

Materials are more efficient and copper and iron consumption is less. In high-efficiency motors, due to the improvement of efficiency index, in order to reduce the winding loss and core loss, it is necessary to reduce the current density and magnetic induction intensity accordingly, and increase the conductor section and core length accordingly. The outer diameter of some bases is increased by punching plates. The corresponding increase in the number of substances.

Relatively high-quality magnetic materials are used to reduce iron consumption. Due to the limitation of axial size and center height, the simple increase of materials cannot reduce iron consumption. Therefore, cold-rolled silicon steel sheets with low loss must be selected, which is particularly important for motors with medium and high performance specifications.

Check the temperature rise of the motor properly. As the temperature rise is affected by the amount of material and mechanical loss, under the same material conditions, the temperature rise decreases with the increase of the amount of cooling air. With the decrease of temperature rise, the copper loss of stator and rotor decreases and the mechanical loss increases. If the copper loss of stator and rotor is greater than the mechanical loss, the efficiency will increase, otherwise the efficiency will decrease. Therefore, reasonable control of temperature rise plays a key role in improving the efficiency of performance motors.