KR20000072486A - A generator electric occurrence device using fixed coil in the rotation magnetic field - Google Patents

Abstract

PURPOSE: An electricity generating device of an alternator is provided to generate a magnetic field using two simple fixing winding coil sets and to reduce a cost and a weight by removing a butt end portion. CONSTITUTION: An electricity generating device of an alternator comprises a rotary solid steel cylindrical core(1) which has two poles(2) and is mounted at an alternator shaft(3). Round electrical coils(6,7) are attached at disks(4,5), whose circular holes have the same size so as to be fitted in the cylindrical core(1). A w stack silicon steel plate core(9) is fitted in a slot, and has air gaps(11-13). The disks(4,5) are installed at both ends of the core(1) so as to be set opposite each other. A pole(2) is interconnected with steel rings(14,15) attached at both ends of the cylindrical core(1).

Description

A generator electric occurrence device using fixed coil in the rotation magnetic field}

The present invention relates to an electric generator of a synchronous generator using a fixed coil in a rotating magnetic field, and in particular, to generate a rotating magnetic field with two simple fixed winding coil sets (SET), a conventional slip ring (SLIP RING) and a brush assembly ( It does not use BRUSH ASSEMBLY or EXCITER and eliminates even wiring of all slots and phase windings in the laminated silicon steel of the stator and eliminates the resulting butt ends, which saves cost and reduces weight. I would have to.

In general, a synchronous generator is a converter that converts mechanical energy into electrical energy, which is installed in power plants, factories, etc. to produce general electric energy and use it as a power source for home and industrial use.

Such synchronous generators can be used for power supply of automobiles, constant power supply for various industrial machinery, construction machinery and many other fields, local power supply to areas where general electricity supply is impossible, or emergency power supply for sudden power failure of general electricity. Essentially used for

The phase windings of conventional generators require the coils to be evenly wired inside a myriad of slots made of special shapes on the laminated silicon steel sheet of the stator.

In addition, in the related art, it is difficult to press-fit manually by hand in order to evenly wire a coil to a spiral sheet having a complicated and specially shaped slot, and much of the work is possible only by manpower. Therefore, the production of the existing synchronous generator is a labor-intensive work, so there is a problem of very low productivity.

In addition, phase winding manufacturing and coil wiring of laminated silicon steel sheet slots require excessive material use, and the manufacturing process must also rely on manual labor by manpower. There is a limit to lower production costs, which makes it difficult to raise the competitiveness of small and medium sized synchronous generator production.

In addition, the magnetic field formation by the excitation of the conventional synchronous generator is a method by the electromagnet set (SET) of the rotor energized through the slip ring and brush assembly, and a small generator mounted on the same axis of the synchronous generator There is a BRUSHLESS method using EXCITER.

The use of the former slip ring and brush assembly is inconvenient, requiring frequent maintenance that requires careful attention to its construction and the need to ensure that the sparks, such as the initial state, are always maintained.

Using the latter exciter requires the installation of another small generator on the same shaft, which requires the same manufacturing process as the synchronous generator, which leads to excessive material use and labor, as well as increased weight on the shaft. The diameter of the shaft will increase and the overall weight will increase considerably.

Therefore, such a conventional synchronous generator has the following fundamental problems.

Complex structured slots are required on stator laminated silicon steel sheets for phase winding wiring, and a large number of labors are required for manual and phase winding manual work that requires a coil to be pressed into the slots.

In addition, there are problems with excessive material requirements and heavy electromagnets required for women and the use of slip rings and brush assemblies or exciters for their energizing, and frequent maintenance that requires careful attention to keep the slip rings and brush assemblies in good condition. Is required.

In addition, it causes excessive material consumption and excessive labor cost due to the exciter mounted on the same axis, and the cost increase due to the overall weight increase including the axis.It is also impossible to mass-produce due to the difficulty of automatic equipment automation and to lower the production cost with low productivity. There is a limit.

In addition, there is a drawback to the installation of an uneconomical cooling system and to increase the weight to cool due to the excessive heating of the phase windings, the formation of a butt-end part of the phase windings that occupy about 40% of the total windings Due to the excessive material consumption and weight increase, there was a defect in the cost increase.

The present invention solves this problem, and the object of the present invention is to generate a magnetic field with two simple fixed winding coil sets, do not use slip ring and brush assembly or use exciter, Remove the numerous slots needed for phase winding on the laminated silicon steel sheet, remove the work-by-push coils into the slots one by one, remove the phase winding equalization wiring, and remove the butt-end parts formed by the phase windings. It is to provide an electric generator of the synchronous generator used.

1 is a front view of a cylindrical steel core in which two poles are coupled to a generator shaft.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a front view of one of two basic disks with an excitation coil

4 is a cross-sectional view taken along the line B-B of FIG.

5 is a front view of a two-phase three-phase generator

6 is a side view of FIG. 5.

<Explanation of symbols for main parts of drawing>

1: Cylindrical Core 2: Paul

3: generator shaft 4, 5: disc

6, 7: Electric coil 8: slot

9: core 10: phase winding coil

11-13: Air gap 14, 15: Steel ring

In order to achieve the above object, the present invention provides a W-type laminated silicon steel sheet core having the same shape as a stator having a phase winding coil, two fixed plastic disks having two exciting coils, and a pole to be excited. And two cylindrical cores and two solid steel rings mounted on the generator shaft to circulate the lines of magnetic force.

The present invention is characterized in that the synchronous generator is configured to be effective only by a rotating magnetic field which is energized by two fixed coils connected in opposition, which increase the excitation efficiency and have little magnetic flux loss.

The present invention is characterized in that the phase winding coils are independently installed so that phase winding and even wiring are not necessary, and thus the butt and part of the winding are eliminated to reduce the weight.

The present invention is characterized in that the W-type laminated silicon steel sheet cores are each independently formed to form a magnetic field.

The present invention is characterized in that the two cavity excitation coils are fixed so that the weight of the cylindrical core having one or more pairs of poles is reduced.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a cylindrical steel core in which two poles are coupled to a generator shaft of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and the rotary solid steel cylindrical core having a pole 2 is shown. (1) is configured to be mounted on the generator shaft (3).

FIG. 3 is a front view of one of the two basic disks with an excitation coil, and FIG. 4 is a sectional view taken along the line BB of FIG. 3, wherein the rounded electric coils 6 and 7 of the same size and shape are Attached to the disks 4 and 5, the circular holes in the center of the disks 4 and 5 are of substantially the same size so as to be fitted to the cylindrical core 1.

FIG. 5 is a front view of a two-phase three-phase generator, and FIG. 6 is a side view of FIG. 5, in which a phase winding coil 10 is mounted on the middle leg of the core 9 and each of the disks 4 and 5. It is constructed by fitting the W-shaped core 9 into the slot 8.

In the drawings, reference numerals 11 to 13 are air gaps.

Referring to the operation of the present invention configured as described in detail as follows.

Firstly, the present invention provides a rotary solid steel cylindrical core 1 having two poles 2 mounted on a generator shaft 3, and in plastics or other non-ferrous metal of two identical sizes and shapes in FIGS. 3 to 6. The disks 4, 5 made of solid material are the basis of this synchronous generator.

In addition, in Fig. 4, the round electric coils 6 and 7 of the same size and shape are attached to the discs 4 and 5, and the discs on which the electric coils 6 and 7 are mounted ( 4) (5) The central circular hole is set to approximately the same size so as to fit into the cylindrical core 1.

In general, in the case of a three-phase synchronous generator, as shown in Figs. 3 and 4, all six simple identical slots are made at every 60 degree angle on the circumference of the discs 4 and 5.

The phase winding coil 10 of FIG. 6 is mounted on the middle middle leg of the core 9, and then the W-shaped laminated silicon steel core 9, which is a stator of the synchronous generator, is fitted into this slot.

In this state, the six slot bottom lines become arcs corresponding to the arcs of the poles 2, and the W-type stack with the phase winding coils 10 fitted into the slots 8 of the discs 4 and 5 respectively. Since the silicon steel sheet core 9 is configured in the shape of an arc of this slot, an air gap 11-13 is formed.

In this case, the air gaps 11 and 13 are smaller in size than the air gaps 12, and the electric motif force and the electromotive force (EMF) vary depending on their configuration, shape, and size.

The assembly of the main components is shown in Figure 6, the basic disk (4) (5) having the electric coil (6) (7) is installed facing the ends of the cylindrical core (1), phase winding The W-shaped stator core 9 having the coil 10 is fitted into the slot 8 and completed.

The electrical coils 6 and 7 are connected in opposition to each other to generate magnetic fluxes, respectively, and the vectors of their magnetic flux densities are centered around the cylindrical core 1.

In other words, the forces from the steel poles 2 in the circumferential direction are each directed outwards, thereby forming a strong magnetic field where the lost magnetic flux is actually " 0 ".

In this synchronous generator, the magnetic field lines of the magnetic field and the center axis of the generator are on the same plane, but in the existing synchronous generator, they are located in the vertical plane.

The poles 2 of the synchronous generator are complementary in a similar shape to each other, which is connected to the steel rings 14 and 15 attached to both ends of the cylindrical core 1 so that the flow of magnetic flux is closed. .

The rotating magnetic field of the pole, which resembles a shape, induces an electromotive force EMF in the phase-iding coil 10, and one rotation of the rotor corresponds to two full waves of the EMF in each phase-winding coil 10.

In a three-phase synchronous generator, three sets of W-steel cores constitute one generator from where the coil moves 60 degrees or π / 3, respectively.

The next three sets of W-type steel cores, each with independent phase winding coils 10, constitute another three-phase generator.

Thus, two sets of three-phase windings consist of two synchronous generators with one co-excitation magnetic field.

The synchronous generator shaft, to which the cylindrical core 1 to be excited is coupled, is arranged in line in the center hole of two identical fixed disks on which the exciting coil is mounted.

Two identical solid steel rings through which the generator magnetic lines are circulated are mounted to the cylindrical core 1 that is excited.

The W-shaped laminated iron core 9 of the stator to which the phase winding coil 10 is attached is installed and fixed in a slot in two fixed base disks.

Rotational drive of the generator shaft is maintained by two ball bearings, bearings are mounted on two separate supports, and the fixing of the stator and the adjustment of the air gap are the final steps of the assembly of this synchronous generator.

As described above, the present invention includes two basic disks made of plastic with excitation coils, several W-shaped laminated phase steel cores with phase coils, solid steel cores with several poles mounted, and a generator shaft end. It is composed of a solid steel ring, which reduces the use of materials and labor, thereby making it possible to produce a generator that is light in weight, high in efficiency, and has improved productivity under improved cooling conditions.

Claims (5)

W-shaped laminated silicon steel core of the same type, which is a stator having a phase winding coil, The same two fixed plastic discs with two excitation coils, One cylindrical core combined with a pole to be excited, An electric generator of a synchronous generator using a fixed coil in a rotating magnetic field, characterized in that it comprises two solid steel rings attached to the generator shaft to circulate the magnetic force lines. 2. The fixed coil in a rotating magnetic field according to claim 1, wherein the synchronous generator is configured to be effective only by a rotating magnetic field energized by two fixed coils which are connected in reverse with increasing excitation efficiency and almost no magnetic flux loss. Electric generator of synchronous generator. The electric generator of a synchronous generator using a fixed coil in a rotating magnetic field according to claim 1, wherein said phase winding coils are provided independently. The electric generator of a synchronous generator using a fixed coil in a rotating magnetic field according to claim 1, wherein the W-type laminated silicon steel sheet cores are formed independently of each other. The synchronous generator according to claim 1, wherein the synchronous generator is fixed with two co-excited coils, so that the weight of the cylindrical core having one or more pairs of poles is reduced. Electricity generator.