SU1001317A1 - Electric machine stator - Google Patents

Description

(54) ELECTRIC MACHINE STATOR

The invention relates to electrical engineering and can be used, for example, in the production of low-power impolar electric machines. The stator of an electric car is known, which contains newly expressed poles and rmo G 11. The disadvantage of this stator is the high consumption of active materials due to the large amount of waste (up to 5%) obtained by stacking the sheets of the stator package. Closest to the proposed one is a stator of an electric machine, which contains rhighed poles, the sides of which have different specific magnetic losses, and the rotor, which includes the t 2 J ferromagnetic tape. A disadvantage of the known stator is a relatively large consumption of active materials due to the large width of the poles, due to the lack of OPPORTUNITY to make pole tips of the desired configuration and the desired magnetic conductivity, which would allow rational distribution of the magnetic field in the air gap with narrow poles. This increases the consumption of electrical steel and copper winding. The disadvantage is also the technological complexity of manufacturing a high-precision frame containing a ferromagnetic tape, twisted on an edge, and poles containing a bent ferromagnetic tape. The purpose of the invention is to save active materials while improving the processability and starting torque of an electric machine. This goal is achieved by the fact that in the stator of an electric machine containing newly expressed poles and rome, including a ferromagnetic tape, the parts of the rom between the newly expressed poles are made of a ferromagnetic tape so that its surfaces of the bottom of the cross section of the stator and the body of the stator are perpendicular to the stator cross section of the stator and the body of the stator is perpendicular to the stator cross section of the stator and the body of the stator and the hearth. poles are made of ferromagnetic powder pressed material with reinforcement formed by an axially located ferromagnetic tape, which on one side of each field owl faces directly to the bore of the stator. The part of the ferromagnetic tape placed directly at the bore of the newly expressed poles can be located concentric with the surface of the stator bore. Between the newly expressed poles, additional L-shaped poles can be installed, made of a ferromagnetic tape, with the height of each part of the frame between the side of the newly expressed pole with a ferromagnetic

tape placed directly at the bore of the stator, and the additional pole is less than the height of the rest of the frame.

Frame parts made of ferromagnetic tape on one side of the newly expressed poles, with a ferromagnetic tape placed directly on the stator bore, may be located closer to the newly expressed poles than the frame parts made of the ferromagnetic tape on the other side of the newly expressed poles.

The drawing shows the proposed stator, the cross section.

The stator contains the newly expressed poles 1 and rmo 2-5 .. The parts of the rome 2 and between the newly expressed poles are made of a ferromagnetic tape, with the perpendicular surfaces perpendicular 0

the stator cross-sectional planes, and the rest of the rods 4 and 5 and the newly expressed poles 1 are made of pressed ferromagnetic powder material with fittings 6 and 7 formed by an axially located ferromagnetic tape, which on one side 8 of each of the poles faces directly to the stator bore. Between the newly expressed poles 1 are installed, additional poles 9 are L-shaped, and the height of the part of the rome 2 is less than the height of the rest of the roma 3. Parts of the roma 3, made of ferromagnetic tape at the sides of the newly expressed poles, with a ferromagnetic tape placed directly at the stator bore ,, there may be available materials, improved processability and an increase in starting torque NOMeHTa. The bent plates of the frame on the plane perpendicular to the plane of the cross section of the stator, together with the reinforced vyrazherennymi poles and the rest of the frame from a ferromagnetic material provide less labor-intensive,

improved manufacturability than the prototype (jiaBHBKa rma on the edge is less technological).

Ability to perform newly expressed poles with tips and RMA

The desired configuration and magnetic conductivity (PMO of ferromagnetic plates and newly expressed poles of ferromagnetic material with reinforcement) allows you to get a saving of winding weight.

The starting properties relative to the prototype are improved by a greater difference in the specific magnetic losses in the elements of the magnetic circuit (the sides of the newly expressed poles, rmah).

The proposed implementation of stators provides non-waste production and allows for simple manufacturing technology, since precise processing operations are not required. This will make it possible to save up to 4b% of electrical steel compared to the known.

Claims (2)

Claim 1. The stator of the electric machine containing the newly expressed poles, one hundred 74 meters farther from the new poles than the parts of the frame 2. Parts of pta 2 and 3 are made of sheet or coiled electrical steel by non-waste punching of straight plates, the package of which is bent to the desired shape. Additional poles 9, valves 6 and 7 are also made of sheet or coiled electrical steel by non-waste stamping and bend to the desired shape. A bag comprising rmo 2 and 3, additional poles 9 and reinforcement 6 and 7 are installed in a mold, where the remaining parts of rome 4 and 5 and newly expressed poles 1 are made of ferromagnetic powder material with a binder by pressing. The proposed implementation of the stators in the aggregate provides savings in copper and ferromagnetic material