The loss of the core of the hydraulic oil pump motor is large, which is one of the key factors affecting the efficiency of the motor. Today, the editor of Dalan Motor will take you to see what causes the loss of the motor core.
1. The quality of silicon steel sheet does not meet the requirements
Silicon steel sheet as the main magnetically conductive material of the motor, its performance compliance has a great influence on the performance of the motor. When choosing materials, you should try your best to choose the materials of good silicon steel manufacturers.
Second, the insulation between the stator iron chips is not good
There are many factors that lead to poor insulation between the sheets, there are quality problems of the silicon steel sheet itself, and there are also human factors caused by the production process of the iron core.
(1) The silicon steel sheet is not insulated or not well treated. This is a material problem of silicon steel sheet. This kind of problem can be found in the detection process of silicon steel sheet, but not all motor manufacturers have this test item. This problem is often not well recognized by motor manufacturers.
(2) The insulation between the pieces is damaged or the pieces are short-circuited. This type of problem occurs in the manufacturing process of the iron core. If the pressure when the iron core is stacked is too large, the insulation between the sheets is damaged; or the burrs are too large after punching, and the burrs are removed by sanding, which causes serious damage to the insulation on the surface of the punch; and the core is laminated The back groove is not light, use the file repair method; or because the stator inner bore is not light, the stator inner bore and the base stop are not concentric, and other factors are corrected by turning. The idiomatic usage of the production and processing of these motors has a great impact on the performance of the motor, especially the iron loss.
(3) When the winding is dismantled by fire or energized heating, the iron core is overheated, which reduces the magnetic permeability and damages the insulation between the sheets. This problem mainly occurs in the repair of windings in the production process and the repair of motors.
(4) The weight of the iron is insufficient and it is not compacted. The result is that the weight of the iron core is insufficient, which will directly cause the current to be out of tolerance, and at the same time there will be the fact that the iron loss exceeds the standard.
(5) Processes such as stack welding will also cause insulation damage between the laminations and increase eddy current losses.
(6) The thickness of the silicon steel sheet is too thick and the magnetic circuit is too saturated. At this time, the curve of the relationship between the no-load current and the voltage is bent more seriously. This is also a key element in the production and processing of silicon steel sheets.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
Copyright http: / (Dalan Motor) Reprint, please indicate the source
================================================== ================================================== ======
