KR20140024087A - Synchronous generator - Google Patents

Abstract

The present invention relates to a synchronous generator. The synchronous generator comprises a frame which covers the exterior thereof, a rotor part including a rotation shaft which is formed to penetrate the frame, a rotor which is coupled to the rotation shaft, and a plurality of coils which are installed by equally dividing 360 degree in the outer peripheral surface of the rotor and a stator which is covered to be opposite to the coils with space and is installed in the inner peripheral surface of the frame, wherein the rotor part includes a plurality of dampers installed in the outer peripheral surface of the coils and a plurality of damper bars connected to the damper neighboring both side surfaces of the dampers. The synchronous generator is able to reduce manufacturing costs using the damper bars having a plurality of curves instead of rings for fixing the damper and prevent the coils from being damaged through rivet connection.

Description

Synchronous Generators {SYNCHRONOUS GENERATOR}

The present invention relates to a synchronous generator, and more particularly, to a synchronous generator capable of preventing the loss of power and damage to the coil by installing a damper and a damper bar for reducing vibration on the outer peripheral surface of the rotor.

The generator converts mechanical power into electrical power and is driven by a turbine. Daily start-up and daily stop are possible without special constraints, allowing these generators to operate for base and peak loads. The synchronous generator is formed of a basic structure in which a rotor and a stator are installed inside the frame, and all generators must rotate at the same speed in order to operate the generator synchronously. Commonly used is the use of dampers. At this time, a damper bar having a ring structure is installed to fix and couple the damper to be used.

Korean Patent Laid-Open Publication No. 10-2008-0126641 relates to a cooling fan for a synchronous generator having an auxiliary wing for preventing backflow, in particular, a synchronous generator combines a cooling frame provided with a cooling unit at an outer end of a frame on which a stator and a rotor are installed. And forming a pair of communication holes in which air guides continuously bent downward on the same line are connected to each other so that the frame and the cooling frame communicate with each other. Since it is installed inside, when the internal heat of the frame generated by the operation of the stator and the rotor is supplied to the cooling frame by the driving force of the fan, air flows back to the frame by the main wing and the auxiliary wing provided in the fan. It is possible to improve the cooling performance even further, thereby improving the generation efficiency of the synchronous generator. Preventing the flow Synchronous appointed relates to a cooling fan provided with flaps.

Korean Patent Laid-Open Publication No. 10-2005-0044185 relates to a rotor in a generator and a damper winding for a rotor. The rotor 10 in an electric machine includes a magnetic core 11 having at least two poles, one for each pole. A corresponding plurality of winding assemblies 21, 22, and a damper winding 30 surrounding the magnetic core 11 and at least a portion of the winding assemblies 21, 22. The damper winding 30 extends in parallel with (i) a plurality of electrically conductive rings 33 concentric with the rotation axis 12 of the magnetic core 11 and (ii) the rotation axis 12 of the magnetic core 11, respectively. It has a plurality of bars (31, 32) connected to the ring (33) of. The radially outer surface of each bar 31, 32 is respectively connected to the radially inner surface of each ring 33. The spindle 18 of the magnetic core 11 has first and second planes 18a, 18b extending perpendicular to the straight axis of the magnetic core 11. The magnetic core 11 may include first and second protrusions 15, 17 extending in opposite directions along the horizontal axis.

Korean Patent Publication No. 10-2008-0126641 Korean Patent Publication No. 10-2005-0044185

The present invention is to provide a synchronous generator that can prevent the damage of the manufacturing cost and the coil by changing the shape of the damper and damper bar installed on the outer peripheral surface in order to reduce the vibration of the rotor located inside the synchronous generator.

Among the embodiments, the synchronous generator includes a frame surrounding the outside, a rotating shaft formed through the frame, a rotor coupled to the rotation axis in the center and a plurality of coils are installed by equally 360 degrees on the outer peripheral surface of the rotor A rotor part and a stator part which is spaced apart from the plurality of coils and is disposed on an inner circumferential surface of the frame, wherein the rotor part comprises a plurality of dampers installed on an outer circumferential surface of the plurality of coils; It includes a plurality of damper bars connected to the adjacent damper on both sides of the plurality of dampers.

In one embodiment, the rotor unit may further include a bearing located between the frame and the rotating shaft.

In one embodiment, the plurality of damper bars may be located adjacent to both sides of the plurality of dampers to form a circuit (Circuit).

In one embodiment, the plurality of damper bars may be connected to the plurality of dampers in a riveted structure.

In some embodiments, the plurality of damper bars may be formed of a curved aluminum material.

The present invention can provide a synchronous generator that can prevent the damage of the manufacturing cost and the coil by changing the shape of the damper and damper bar installed on the outer peripheral surface in order to reduce the vibration of the rotor located inside the synchronous generator.

1 is a view for explaining a synchronous generator according to an embodiment of the present invention.
It is sectional drawing explaining the rotor part of the synchronous generator of FIG.
3 is a cross-sectional view illustrating a plurality of dampers and a plurality of damper bars of the rotor part of FIG. 2.

The description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

1 is a cross-sectional view illustrating a synchronous generator according to an embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating a rotor unit of the synchronous generator of FIG. 1, and FIG. 3 is a plurality of dampers of the rotor unit of FIG. 2. And a plurality of damper bars. Hereinafter, the synchronous generator 100 will be described with reference to FIGS. 1 to 3.

As shown in FIG. 1, the synchronous generator 100 according to an embodiment of the present invention is for converting mechanical energy into electrical energy, and includes a frame 110, a rotor part 120, and a stator part 130. Include. In one embodiment, the synchronous generator 100 may be operable for base load and peak load.

The frame 110 may be formed to surround the outside of the synchronous generator 100. In one embodiment, the frame 110 may be made of nonmagnetic material so as not to be affected by the magnetic field.

The rotor unit 120 includes a plurality of rotor shafts formed through the frame 110, a rotor 210 coupled to the center of the rotation shaft 140 at a center thereof, and a plurality of 360 degrees uniformly installed on the outer circumferential surface of the rotor 210. Of the coils 220, a plurality of dampers installed on the outer circumferential surface of the plurality of coils 220, and a plurality of dampers 310 adjacent to both sides of the plurality of dampers 310. It includes a plurality of damper bars (320). In one embodiment, the rotor portion 120 may be rotated through electromagnetic interaction with the stator portion 130 to be described later.

In one embodiment, the rotor portion 120 further includes a bearing (not shown) to perform a role of support with smooth movement of the rotation shaft 140 between the stator portion 130 and the rotation shaft 140 which will be described later The bearing may be made of a nonmagnetic material.

In one embodiment, the rotor unit 120 may further include a cooling fan (not shown) coupled to one end of the rotation shaft 140 and positioned at one end of the frame 110. The cooling fan may cool or release heat generated by the driving of the rotor unit 120 to the outside.

In one embodiment, the rotor 210 may be configured as a cylindrical through the center, the shape of the plurality of coils 220 may be elastically formed according to the shape of the rotor 210.

In one embodiment, the cooling fan can be rotated on the same axis as the rotor 210 by the rotating shaft 140, the cooling fan is rotated with the rotation of the rotor 210, the air can be circulated Therefore, the heat inside the synchronous generator can be discharged outward.

In one embodiment, the plurality of damper bars 320 may be located on both sides of the plurality of dampers 310 may be connected in a circuit (Circuit) form.

In one embodiment, the plurality of damper bars 320 may be adjacent to both sides of the plurality of dampers 310 may be connected in a rivet structure.

In one embodiment, the plurality of dampers 310 may be formed of a curved aluminum material.

The stator part 130 may be formed to surround the plurality of coils 220 to be spaced apart from each other and may be located on an inner circumferential surface of the frame 110. In one embodiment, the stator portion 130 may be formed of an iron core supporting the winding, and may be relative to the rotor portion 120.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: synchronous generator
110: frame
120: rotor portion 130: stator portion
140:
210: rotor 220: a plurality of coils
310: a plurality of dampers 320: a plurality of damper bars

Claims (5)

A frame surrounding the outside;
A rotor unit including a rotation shaft formed through the frame, a rotor coupled to the rotation shaft at a center thereof, and a plurality of coils installed equally by 360 degrees on an outer circumferential surface of the rotor; And
It includes a stator portion surrounding the plurality of coils spaced apart from each other, and located on the inner peripheral surface of the frame,
The rotor part
A plurality of dampers installed on an outer circumferential surface of the plurality of coils; And
A plurality of damper bars connecting to dampers adjacent to both sides of the plurality of dampers;
Synchronous generator comprising a.
The method of claim 1, wherein the rotor unit
And a bearing positioned between the frame and the rotating shaft.
The method of claim 1, wherein the plurality of damper bars
Synchronous generator, characterized in that the circuit is located adjacent to both sides of the plurality of dampers (Circuit).
The method of claim 1, wherein the plurality of damper bars
A synchronous generator characterized in that the plurality of dampers are connected in a rivet structure.
The synchronous generator according to claim 1, wherein the plurality of damper bars are formed of a curved aluminum material.

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