KR102511787B1 - Slip ring typed ac generator - Google Patents

Abstract

The present invention relates to a slip ring type alternating current generator, and a slip ring type alternating current generator according to an embodiment of the present invention includes: a stator formed in a cylindrical shape and having a plurality of magnets formed on an inner surface of the stator; A rotor located inside at a predetermined interval and having a plurality of coils formed on the outer surface of the rotating body, a driving unit that rotates the rotor at a predetermined speed using a rotation shaft, and electrically connected to the coils and a power supply unit for outputting alternating current electricity to the outside by contacting a brush to the slip ring coupled to the pivot shaft.

Description

Slip ring type AC generator {SLIP RING TYPED AC GENERATOR}

The present invention relates to a slip ring type alternating current generator, and a technology capable of improving power generation efficiency while minimizing a rotational load of a rotor is disclosed.

Most of the electricity we use comes from thermal power plants or nuclear power plants. However, thermal power generation by burning fossil fuels generates carbon dioxide, which causes global warming and environmental problems. In addition, the nuclear power generation method in which a generator is operated through a nuclear reaction raises many environmental problems such as radioactive leakage and nuclear waste disposal problems. As the method of using electricity has become more important due to the problems of electricity production, that is, the depletion of fossil fuels and environmental problems, a movement to save electricity has been made recently, and power-saving home appliances have appeared accordingly.

Among the prior art, Korean Patent Registration No. 10-1516389 (registered on April 23, 2015) relates to a motor generator in which driving and electric charging are performed simultaneously, a cylindrical case with one side open and the other side blocked, An internal stator fixed to the center and having a coil wound thereon; An external stator fixed to the inner circumferential surface of the case and having a coil wound thereon, provided between the internal stator and the external stator, provided with a rotating means so as to be rotatable around the central axis of the case, rotation formed by crossing permanent magnets It is characterized in that it consists of a rotor, and a battery unit connected to the inner stator and the outer stator.

However, the prior art has limitations in that, as many magnets are used in the rotating rotor or stator, a lot of cost is incurred in equipment and the load of the motor increases.

A technical problem to be solved by the present invention is to provide a slip ring type alternating current generator capable of increasing power generation efficiency while reducing power to drive a rotor.

In addition, it is to provide a slip ring type alternating current generator capable of increasing durability by minimizing the generation of cogging torque by reducing the weight of the rotor.

In addition, it is to provide a slip ring type alternating current generator capable of reducing cost by reducing the number of magnets used in the stator and facilitating transportation by reducing overall weight.

A slip ring type alternating current generator according to an embodiment of the present invention has a stator formed in a cylindrical shape and having a plurality of magnets formed on an inner surface thereof, spaced apart from each other at predetermined intervals inside the stator, and located outside the rotating body. A rotor in which a plurality of coils are formed on the side, a driving unit for rotating the rotor at a predetermined speed using a rotation shaft, and a brush contacting a slip ring coupled to the rotation shaft while being electrically connected to the coil It includes a power supply unit that outputs alternating current electricity to the outside.

In addition, a plurality of slip grooves are formed on the surface of the slip ring, and the brush contacts the slip groove to output the electricity transmitted to the slip ring to the outside.

In addition, the coil may be formed in a three-phase, four-linear Y connection.

In addition, the stator may have a plurality of first magnets having a first polarity arranged, and a second polarity opposite to the first polarity may be induced between the first magnets.

The controller may further include a control unit that detects power induced from the rotor and compares it with a preset capacity range to increase or decrease the rotational speed of the drive unit.

Accordingly, power generation efficiency can be increased while reducing the force driving the rotor.

In addition, by reducing the weight of the rotor, it is possible to increase durability by minimizing generation of cogging torque.

In addition, cost can be reduced by reducing the number of magnets used in the stator, and overall weight can be reduced to facilitate transportation.

1 is a configuration diagram of a slip ring type AC generator according to an embodiment of the present invention.
2 is a cross-sectional view of a stator and a rotor in the AC generator according to FIG. 1;
FIG. 3 is a detailed cross-sectional view of a stator in the AC generator according to FIG. 1; FIG.
FIG. 4 is an exemplary diagram for explaining that a magnet of single polarity is implemented in a stator in the AC generator according to FIG. 1 .
5 is an exemplary diagram for explaining the configuration of a power supply unit in the AC generator according to FIG. 1;
6 is an exemplary view for explaining that a control unit and a sound sensor are added in the AC generator according to FIG. 1 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of functions in the embodiment, and the meaning of the terms may vary depending on the intention of a user or operator or a precedent. Therefore, the meaning of terms used in the embodiments to be described later, when specifically defined in the present specification, follows the definition, and when there is no specific definition, it should be interpreted as a meaning generally recognized by those skilled in the art.

1 is a configuration diagram of a slip ring type AC power generator according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a stator and a rotor in the AC generator according to FIG. 1, and FIG. 3 is a block diagram according to FIG. A cross-sectional detailed configuration diagram of a stator in an AC power generator, FIG. 4 is an exemplary diagram for explaining that a magnet of single polarity is implemented in the stator in the AC power generator according to FIG. 1, and FIG. 5 is an AC power generator according to FIG. 1 It is an exemplary diagram for explaining the configuration of the power supply unit in .

The slip ring type AC generator 100 according to an embodiment of the present invention includes a stator 110, a rotor 120, a driving unit 130 and a power supply unit 140.

The stator 110 is formed in a hollow cylindrical shape made of silicon steel, and a plurality of magnets 112 are formed on the inner surface. For example, in the stator 110, permanent magnets of N poles and S poles may be alternately arranged. The stator 110 may be supported by a fixing cover 111 formed on an outer circumferential surface so that the opening surface is positioned in a horizontal direction with the ground. The length or radius of the stator 110 may be varied by a user's design. The size or magnetic force of the magnet 112 formed on the stator 110 may be variously applied according to a user's design.

Further, in the stator 110, a plurality of first magnets 112-1 having a first polarity are arranged, and a second magnet having a second polarity opposite to the first polarity is disposed between the first magnets 112-1. (112-2) can also be derived. This is to use magnets 112 of the same polarity. In this case, it is preferable to set the first magnet 112-1 to the S pole. When the first magnet 112-1 has an S pole, the second magnet 112-2, which is a virtual induction electrode, is guided to the N pole in the gap therebetween. In this case, the body of the stator 110 may be formed of silicon steel. Accordingly, the number of magnets 112 inserted into the stator 110 can be reduced by half. By reducing the weight of the stator 110, the weight of the entire AC generator 100 can be reduced, cost can be reduced, and movement can be facilitated.

The rotor 120 is a cylindrical rotating body located inside the stator 110 spaced apart from each other at predetermined intervals. The rotor 120 is rotated by the driving unit 130 with a pivoting shaft 131 inserted in the center. A plurality of coils 121 are formed on the outer surface of the rotor 120 . For example, the plurality of coils 121 may be formed in a 3-phase 4-wire Y connection. The plurality of coils 121 are configured to generate AC electricity. A slot 122 is formed in the rotor 120 so that a plurality of coils 121 can be accommodated therein. The number of slots 122 may be designed in various ways according to power generation capacity. Weight and rotational speed vary according to the number of coils 121 coupled to the rotor 120 . Accordingly, the cogging phenomenon can be minimized while minimizing the weight of the rotor 120 .

The drive unit 130 rotates the rotor 120 at a predetermined speed using the pivot shaft 131 . The driving unit 130 is implemented as a motor and rotates the rotation shaft 131 to rotate the rotor 120 . In this case, the bearing 131-1 may be implemented on the rotation shaft 131. The driving unit 130 drives the rotor 120 at a preset motor rotation rate. The rotational speed of the drive unit 130 may be set differently according to the weight and power generation capacity of the rotor 120 . As the drive unit 130 rotates the rotor 120, the magnet 112 of the stator 110 and the coil 121 of the rotor 120 are alternately and repeatedly charged to generate electricity. For example, the driving unit 130 may also reduce the driving speed using a speed reducer. In the present invention, the efficiency of the power generated by the stator 110 and the rotor 120 can be increased more than the power consumed by the driving unit 130 .

The power supply unit 140 is electrically connected to the coil 121 and outputs AC electricity to the outside by contacting the brush 142 to the slip ring 141 coupled to the pivot shaft 131. In this case, the slip ring 141 is coupled to the rotation shaft 131 in a cylindrical shape, and a plurality of slip grooves 141-1 are formed on the surface. The slip ring 141 is formed on one side of the rotor 120 and is electrically connected to the coil 121 of the rotor 120. The slip ring 141 rotates along with the rotor 120 through the rotation shaft 131. The brush 142 is formed to move along the slip groove 141-1 of the slip ring 141. In other words, the brush 142 is connected to the slip ring 141 in a contact manner, but is not necessarily limited thereto and may be connected in a non-contact manner. The brush 142 serves to output AC electricity transmitted through the rotor 120 to the outside while contacting the slip ring 141 .

6 is an exemplary view for explaining that a control unit and a sound sensor are added in the AC generator according to FIG. 1 .

Referring to FIGS. 1 to 6 , the slip ring type AC generator 100 according to an embodiment of the present invention may further include a control unit 150.

The control unit 150 may increase or decrease the rotational speed of the driving unit 130 by detecting the power induced from the rotor 120 and comparing it with a preset capacity range. The control unit 150 receives the power generation capacity set by the user, and drives the drive unit 130 to rotate the rotor 120 for this purpose. The control unit 150 detects the power generation capacity in real time and determines whether the drive of the rotor 120 is normal. The control unit 150 may also determine whether or not there is a failure by determining the generation capacity received from the power supply unit 140 at a predetermined time period. The control unit 150 may output a failure signal when the generation capacity does not meet a preset value. In this case, the control unit 150 may also output a failure signal to the external user terminal 10 . Accordingly, the user can check whether the AC generator 100 is out of order even remotely.

Meanwhile, the slip ring type AC generator 100 according to the embodiment of the present invention may further include a sound sensor 160.

The sound detector 160 detects noise within the AC generator 100 . The sound detector 160 detects at least one of a frictional noise between the stator 110 and the rotor 120, a frictional noise between the slip ring 141 and the brush 142, and motor noise of the driving unit 130. The sound sensor 160 may stop the operation of the driving unit 130 by determining that the noise frequency exceeds a preset value. In this case, the control unit 150 may also output a failure signal to the external user terminal 10 . This is to enable an external user to remotely check whether or not the AC power generator 100 is out of order, and to more accurately determine whether or not there is a failure. In other words, even if the output generation capacity is normal, if the noise information is in a faulty state, the drive unit 130 is stopped to prevent a risk of fire due to overheating.

In the above, the present invention has been described with reference to the preferred embodiments described with reference to the drawings, but is not limited thereto. Therefore, the present invention should be interpreted by the description of the claims intended to cover obvious modifications that can be derived from the described examples.

100: alternating current generator
110: stator
111: fixed cover
112: magnet
112-1: first magnet
112-2: second magnet
120: rotor
121: coil
122: slot
130: driving unit
131: rotation axis
131-1 : Bearing
140: power supply
141: slip ring
141-1: Sleep home
142: brush
150: control unit
160: sound detection unit

Claims (5)

It is formed of a silicon steel material in a cylindrical shape, a plurality of magnets are formed on the inner surface, a plurality of first magnets representing a first polarity are arranged, and a gap between the first magnets has a second polarity opposite to the first polarity. a stator for inducing an imaginary second magnet with two polarities;
a rotor located inside the stator spaced apart from each other at predetermined intervals and having a plurality of coils formed on an outer surface of the rotating body;
a driving unit that rotates the rotor at a predetermined speed using a rotation shaft;
While being electrically connected to the coil, a brush is brought into contact with a slip ring coupled to the pivot shaft to output alternating current electricity to the outside, a plurality of slip grooves are formed on the surface of the slip ring, and the brush moves the slip groove. a power supply unit that contacts and outputs the electricity transmitted to the slip ring to the outside; and
Sleep comprising a control unit that detects power induced from the rotor, compares it with a preset capacity range, increases or decreases the rotational speed of the driving unit, and determines the generation capacity received from the power supply unit at a preset time period to determine whether or not there is a failure Ring type alternator. delete According to claim 1,
The coil is a slip ring type alternating current generator formed by a three-phase four-line Y connection. delete delete

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