Composite soft magnetic powder magnetic conducting material for slot wedge of electric machine and preparation thereof

A technology of magnetic conductive material and motor slot wedge, applied in the direction of inorganic material magnetism, electrical components, electromechanical devices, etc., can solve the problems of motor eddy current loss rise, shedding and cracking, low mechanical properties, etc., to reduce additional losses and eddy currents Loss, effect of high mechanical properties

A technology of magnetic conductive material and motor slot wedge, applied in the direction of inorganic material magnetism, electrical components, electromechanical devices, etc., can solve the problems of motor eddy current loss rise, shedding and cracking, low mechanical properties, etc., to reduce additional losses and eddy currents Loss, effect of high mechanical properties

CN1949406AInactive Publication Date: 2007-04-18SICHUAN UNIV
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  • Composite soft magnetic powder magnetic conducting material for slot wedge of electric machine and preparation thereof
  • Composite soft magnetic powder magnetic conducting material for slot wedge of electric machine and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment makes carbonyl iron powder / MnZn ferrite soft magnetic composite powder to prepare the magnetic material, and the process steps are as follows:

[0017] (1) Ingredients: glass fiber 30%; soft magnetic composite powder 20% (MnZn ferrite powder: Fe powder = 4: 1); epoxy resin 50%. The above percentages are volume percentages. The glass fiber is added in the form of glass cloth, and the resin is fully impregnated on the glass cloth.

[0018] (2) Lamination: Divide the evenly mixed composite soft magnetic powder according to the number of glass cloth layers, and then place the uniformly distributed composite powder on the glass cloth to obtain a prepress. The pre-press material is overlapped layer by layer to obtain the structure shown in Fig. 2 .

[0019] (3) Hot pressing: Put the laminated prepress into the template for hot pressing, so that the resin melts and flows to bond the composite magnetic powder and fiber. The hot pressing temperature is the cur...

Embodiment 2

[0023] This embodiment makes the magnetic permeable material prepared by FeSiAl / MnZn ferrite soft magnetic composite powder, and the process steps are as follows:

[0024] (1) Ingredients: glass fiber 25%; soft magnetic composite powder 25% (MnZn ferrite powder: FeSiAl powder = 3: 2); epoxy resin 50%. The above percentages are volume percentages. The glass fiber is added in the form of glass cloth, and the resin is fully impregnated on the glass cloth.

[0025] (2) Lamination: Divide the evenly mixed composite soft magnetic powder according to the number of glass cloth layers, and then place the uniformly distributed composite powder on the glass cloth to obtain a prepress. The pre-press material is overlapped layer by layer to obtain the structure shown in Fig. 2 .

[0026] (3) Hot pressing: Put the laminated prepress into the template for hot pressing, so that the resin melts and flows to bond the composite magnetic powder and fiber. The hot pressing temperature is the cu...

Embodiment 3

[0030] In this embodiment, the magnetic conductive material prepared by reduced iron powder / MnZn ferrite soft magnetic composite powder is prepared, and the process steps are as follows:

[0031] (1) Ingredients: glass fiber 20%; soft magnetic composite powder 20% (MnZn ferrite powder: reduced Fe powder=1:4); epoxy resin 60%. The above percentages are volume percentages. The glass fiber is added in the form of glass cloth, and the resin is fully impregnated on the glass cloth.

[0032](2) Lamination: Divide the evenly mixed composite soft magnetic powder according to the number of glass cloth layers, and then place the uniformly distributed composite powder on the glass cloth to obtain a prepress. The pre-press material is overlapped layer by layer to obtain the structure shown in Fig. 2 .

[0033] (3) Hot pressing: Put the laminated prepress into the template for hot pressing, so that the resin melts and flows to bond the composite magnetic powder and fiber. The hot pressi...

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Abstract

The invention relates to a dynamo using slot wedge using compound soft magnetic powder magnetic conductance material. The powder is the compound soft magnetic powder compounded from MnZn ferrite powder and reduced iron powder or carbonyl iron dust. The radio is 10-90wt% high resistivity magnetic powder, and 10-90wt% high magnetic permeability magnetic powder. Adding certain quantity glass fiber into compounded magnetic powder layer, separating structure would be formed. The invention could decrease supplementary load loss of dynamo, as well as eddy current loss, and improve efficiency of dynamo.

Description

technical field [0001] The invention belongs to the field of soft magnetic materials, in particular to a composite soft magnetic powder magnetic conduction material for motor slot wedges. Background technique [0002] As we all know, the total loss of the motor is composed of copper loss, iron loss, mechanical loss and additional loss. Among them, the iron loss is mainly composed of hysteresis loss and eddy current loss, and the additional loss is composed of pulse vibration loss and surface loss. At present, domestic and foreign motor research and development institutions are looking for ways to reduce motor loss and improve motor efficiency from the perspective of motor structure and motor materials. From the perspective of motor materials, the most effective method is to use magnetic slot wedges made of magnetically permeable materials to replace the insulating slot wedges in the original motor stator slot structure, and use the magnetic permeabil...

Claims

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Application Information

Patent Timeline
18 Apr 2007
Publication
CN1949406A
IPC
H01F1/20; H02K3/493
Inventors
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