Electric machine with high efficiency with salient poles and method of its manufacturing

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering, in particular to electric machines with salient poles, including generators and motors. The suggested electric machine with salient poles includes rotating field assembly having curved outside diameter and including one and more rotor poles, windings and rods supporting coil, and winding section projecting beyond the rotor poles, and at least one cap of end face turn connected with rotating field assembly and surrounding coil supporting rods and windings section projecting beyond the rotor poles such that to reduce ventilation losses. At that this cap of the end face turn is made with the outside diameter mainly equal or similar to outside diameter of the specified rotating field assembly, and the rotating field assembly includes the open air cavity between the rotor poles and winding supports.

EFFECT: efficiency increasing of the electric machines with salient poles by means of the ventilation losses reduction.

10 cl, 8 dwg

 

The scope of the invention

The present invention relates to electric machines eurovirgins poles, including generators and motors.

Prerequisites to the creation of inventions

Previously, the initial cost of electric machines with eurovirgins poles, such as generators and motors, considered the main factor when buying an electric machine with eurovirgins poles required power, taking into account the design features of the fence, and the purchase was made among suppliers, which ensure high reliability and have a wide range. Electric machine with eurovirgins poles usually buy at the lowest price and, in most cases, it does not take into account operating costs.

However, it should be borne in mind that the cost of crude oil is growing rapidly and therefore the operating costs become an important factor in the choice of electrical machines with eurovirgins poles. Thus, it is impossible not to take into account the operational costs associated with the production of electricity by means of electric machines with eurovirgins poles. In addition, it is desirable to reduce greenhouse gas emissions in the most efficient electricity generation.

The production of the electricity industry and represent those areas, which can be mostly used blocks generators in accordance with the present invention, having a high efficiency Gains from increased efficiency in several high-value block can be obtained very quickly and are attractive from an economic point of view. Thus, there is a need to improve the efficiency of electric machines with eurovirgins poles.

Ventilation losses represent losses associated with cooling fans and design enouraging poles of electric machines with eurovirgins poles. In some applications, the ventilation loss may be the biggest individual component losses of the unit. This is due to the necessity of establishing air flow with high costs of air in order to avoid excessive temperature rise. In addition, there is a high pressure drop caused by unfavorable geometry. Both of these phenomena lead to very low efficiency of the fan in the known devices, which leads to high losses. Thus, there is a need to reduce ventilation losses and hence improve the efficiency of electric machines with eurovirgins poles.

The invention

The choice of electric machines with eurovirgins poles in the region have the highest efficiency, such as generators, should be performed with respect to fuel economy when you need it. However, having a high efficiency of the electric machine with eurovirgins poles have other advantages, in addition to fuel savings. Electric cars with low loss and create less heat, and therefore operate at lower temperatures cooler than cars with a lower efficiency of These lower temperatures can significantly improve the service life of the electric machine with eurovirgins the poles, because the service life of insulating materials increases with decreasing temperature.

To reduce losses related to installed on the shaft of the cooling fan in the cooling unit uses a new concept of fan driven by a small induction motor. To minimize turbulent losses enouraging pole, use the interpolar caps made of composite material and the caps face turns from a composite material to reduce drag. In addition, the fan units can be independent of the site create a rotating field.

In accordance with this invention features an electric machine with eurovirgins poles, which contains the node create the rotating field and at least one interpolar cap, the connection is United with the host rotary field, and/or at least one end cap coil connected to a node of the rotating field. Each interpolar cap mainly contains upper surface, which has a bending and/or at least one cavity. The cap end of the coil body may have at least one leg (one support element). Electric machine with eurovirgins poles may also contain at least one node of the fan, node-independent rotating field. In accordance with the preferred option, an electric machine with eurovirgins poles contains at least one circuit Board, and each node of the fan is mounted on the circuit Board. The interpolar caps and end caps round mainly made of composite materials, polymers, alloys, ceramics or natural materials.

In accordance with the present invention a method of manufacturing an electric machine with eurovirgins poles, with the node of the rotating field, and the method includes the operation of connection of at least one interpolar cap with the host rotary field. This method also includes an operation connection of at least one end cap with a coil node rotary field and/or the join operation at least one is evil fan, node-independent rotating field, the electric machine with eurovirgins poles. In accordance with a preferred embodiment of the present invention, the interpolar cap includes an upper surface, the upper surface of each interpolar cap has a cavity.

Brief description of drawings

In Fig. 1 shows a perspective view of a known node spinning field.

In Fig. 2 shows a perspective view, partially spatially separated parts, the variant site of a rotating field in accordance with the present invention.

In Fig. 3 shows a perspective view Assembly version of the site rotating field in accordance with the present invention.

In Fig. 4 shows a perspective view of a variant minyukova cap in accordance with the present invention.

In Fig. 5 shows a perspective view from the outer side version of the cap end of a coil in accordance with the present invention.

In Fig. 6 shows a perspective view, with a spatial separation of parts of a variant at least one node of the fan in accordance with the present invention.

In Fig. 7 shows a perspective view of a variant of the fan units in accordance with the present invention.

In Fig. 8 shows a perspective view of a variant of the collected electric machine with eurovirgins the mi poles in accordance with the present invention.

Although in the described invention can be made various changes, only some specific variants of the present invention shown in the drawings and described in detail hereinafter. However, it should be borne in mind that the drawings and detailed description of the specific variants of the invention does not in any way limit the scope of the present invention or its formula. Rather, the drawings and the detailed description serve to explain the concept of the invention to specialists in this field so that they can implement and use the concept of the invention.

Detailed description of the invention

The following describes one or more explanatory variants of the present invention. It should be borne in mind that not all details of the real structure described or shown on the drawings to facilitate understanding of the invention. It should be borne in mind that when you create a real design, which is made using the present invention, can be made various changes to achieve your goals, including those related to building systems, with business, with government regulations and other constraints that can be changed during commissioning and from time to time. Despite the fact that spent during implementation efforts can be complicated and takes a lot of lying is neither, such efforts, however, reflect a standard work of specialists in this field and do not go beyond the scope of this invention.

Known electric machine with eurovirgins poles, namely, the well-known generator, has a reduced efficiency in various applications. In Fig. 1 shows the node 100 of the rotating field of the generator. The node 100 rotating field contains the pole 102 of the rotor winding rods 104 and 106 to support the coil. Winding 104 are held in place by means of supports 108 windings. Open area between the poles of the rotor 102, which are the supports 108, is the place in which the ventilation losses.

Node 112 of the fan mounted on the shaft 110. In the known machine has significant ventilation losses, because the node 112 of the fan requires a large amount of mechanical energy. The mechanical energy required to move air for cooling, forms a significant proportion of the losses in the system and reduces the efficiency of the system.

Section 114 of the windings 104, which stands for the poles of the rotor 102, is another source of ventilation losses. When the node 100 of the rotating field rotates, section 114 of the winding rods 104 and 106 support the coil creates drag, which significantly increases losses and reduces the efficiency

The following is the preferred variants of the electric machine with eurovirgins poles, namely, the generator. However, it should be borne in mind that all electrical machines with eurovirgins poles can be improved using the present invention, which is not beyond the scope of the present invention. Electric machine with eurovirgins poles include generators and motors.

In Fig. 2 shows a variant of the node 200 rotating field. Open air area between the poles of the rotor 202 and supports windings 208 is closed by means minasny caps 216. The terminals 206 of the support coil and sections 214 windings protruding beyond the poles of the rotor 202, closed using caps 218 end turns. In this constructive variant there is no node in the fan attached to the shaft 210.

In Fig. 3 shows a perspective view Assembly version of the node 300 rotating field. You can see that the open air area between the poles of the rotor 302 are closed using minasny caps 316. Sections 314 of the windings protruding beyond the poles 302 of the rotor is closed by means of caps 318 end turns. In this constructive variant there is no node in the fan attached to the shaft 310.

In Fig. 4 shows a perspective view of a variant of the interpolar cap 416. The interpolar cap 416 is made with possibility of installation on the boundary between adjacent poles of the rotor. In accordance with the preferred option, top on top of the spine 420 interpolar cap 416 may have a bend, so after assembling the full site rotating field may form a cylindrical surface, which is preferred to reduce the ventilation losses. In accordance with a preferred variant, at least one cavity 422 may be formed in the interpolar cap 416 to reduce the cost of materials used and to reduce the total weight of the interpolar cap 416.

The interpolar cap 416 may be made of any material with suitable structural properties sufficient to withstand the forces occurring during rotation during operation. Such material may be (but not limited to metals, composites, polymers, alloys, ceramics, natural materials and other similar materials. In accordance with a preferred variant, the composite material in the form of strengthened reinforced epoxy resin is the preferred electrical properties, weight and strength properties. In accordance with the most preferred option, the interpolar cap 416 may be made of hardened reinforced epoxy resin brand G-11, however, experts can easily understand that, in accordance with the present invention can be used, and other suitable materials.

In Fig. 5 shows a perspective view of a variant of the cap 518 mechanical VI is CA. Outer diameter 524 cap 518 mechanical revolution mainly equal to the outside diameter of the host rotary field. The equality of these diameters can reduce ventilation losses due to the irregular boundary between the surfaces. The depth of the cap 518 end loop allows you to completely cover the exposed areas of the windings and the terminals of the coil support. Between the windings mainly has the necessary internal clearance. The installation surface 526 of the cap 518 mechanical coil is selected so that it can be paired with rods support the coil. In accordance with the preferred option, cap 518 mechanical coil connecting bolts with rods support the coil in the axial direction. The cap 518 round face can also have a structural support 528, creating additional rigidity, and they are formed so as not to interfere with the internal components of a node of the rotating field.

Cap round face can also be made from any material with suitable structural properties sufficient to withstand the forces occurring during rotation during operation. Such material may be (but not limited to metals, composites, polymers, alloys, ceramics, natural materials and other similar materials. In accordance with the preferred option compositions the ionic material in the form of strengthened reinforced epoxy resin is the preferred electrical properties, weight and strength properties. In accordance with the most preferred option, cap 518, 618 end of a coil can be made of reinforced fiberglass epoxy brand G-11, however, experts can easily understand that, in accordance with the present invention can be used, and other suitable materials.

In Fig. 6 shows a perspective view, with a spatial separation of parts of a variant at least one node of the fan, node-independent rotating field. You can see that many nodes 630 fans can be installed on the mounting plate 632. Grid 634 can be located on the mounting plate 632, on the outer side from nodes 630 fans. In accordance with the preferred option, technological hatch 636 may also be provided on the mounting plate 632. This scheme allows you to create less stress than those specified on the shaft of the fan.

In Fig. 7 shows a perspective view of a variant of nodes 730 fans. Many nodes 730 fans are installed on the mounting plate 732. These nodes 730 fans mainly connected with bolts and mounting plate 732. Grid 734 can be located on the mounting plate 732, on the outer side from nodes 730 fans. These grids 734 mainly connected with bolts and mounting plate 72.

In the specified case used 4 nodes fans. However, experts can easily understand that, in accordance with the present invention can be used any number of fan units that allow you to create airflow to cool internal components of an electric machine with eurovirgins poles. Despite the fact that there may be considerable variations in the amounts (expenses) air flow for cooling specific electrical machines with eurovirgins poles, in accordance with the most preferred option, the nodes fans create an air flow, comprising at least about 2000 cubic feet per minute. Variations in the cost of air flow depends on the size of the frame, the length of the set, of the type used fan, parameters of the working environment and other variables. The mounting plate is mainly made of steel or other rigid material which enables us to support each node of the fan during operation. For the manufacture of circuit boards can be used, and other suitable materials that are not beyond the scope of this invention.

In Fig. 8 shows a perspective view of a variant of the collected electric machine with 800 eurovirgins poles. Electric machine with 800 eurovirgins poles has a body 836 node ve is tilator, connected with the node 838 anchors. The rotor 840, which is also referred to as node a rotating field is inside the node 838 anchor.

Despite the fact that have been described preferred embodiments of the invention, it is clear that they are not restrictive and specialists in this field can be amended and supplemented, which is not beyond the scope of the claims.

1. Electric machine with eurovirgins poles, which contains:
node a rotating field having a curved outer diameter and including one or more rotor poles, coils and rods to support the coil, and phase windings, which stands for the poles of the rotor; and
at least one end cap coil connected to a node of the rotating field and covering the rods to support the coil and the area of the windings, which stands for the poles of the rotor, so as to reduce ventilation losses, the cap end of the coil body is made with an external diameter of mostly equal or close to the external diameter of the host rotary field,
the host rotary field includes an open air area between the poles of the rotor and supports the windings.

2. Electric machine with eurovirgins poles under item 1, in which each cap end of the coil body has at least one structural support, RAS is than necessary, so in order not to interfere with the internal components of a node of the rotating field.

3. Electric machine with eurovirgins poles on p. 2, in which each cap end of the coil body made of a material selected from the group comprising composite materials, polymers, alloys, ceramics, and natural materials.

4. Electric machine with eurovirgins poles on p. 3, which further comprises at least one interpolar cap connected to the node of the rotating field is established at the boundary between adjacent poles of the rotor.

5. Electric machine with eurovirgins poles on p. 4, in which each interpolar cap has an upper surface, the upper surface of each interpolar cap has a bend.

6. Electric machine with eurovirgins poles on p. 4, in which each interpolar cap contains at least one cavity.

7. Electric machine with eurovirgins poles under item 2, which additionally contains at least one node of the fan, node-independent rotating field.

8. Electric machine with eurovirgins poles on p. 6, which further comprises at least one circuit Board, and each node of the fan is mounted on the circuit Board.

9. Electric machine with eurovirgins poles on p. 3, in which toroi each cap end of the coil body made of composite material in the form of the strengthened reinforced epoxy resin.

10. Electric machine with eurovirgins under item 4, in which each interpolar cap made of composite material in the form of the strengthened reinforced epoxy resin.



 

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