KR20110103247A - Rotor structure having low iron loss - Google Patents
Rotor structure having low iron loss Download PDFInfo
- Publication number
- KR20110103247A KR20110103247A KR1020100022479A KR20100022479A KR20110103247A KR 20110103247 A KR20110103247 A KR 20110103247A KR 1020100022479 A KR1020100022479 A KR 1020100022479A KR 20100022479 A KR20100022479 A KR 20100022479A KR 20110103247 A KR20110103247 A KR 20110103247A
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- South Korea
- Prior art keywords
- coil
- coil winding
- magnet
- iron loss
- rotor structure
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The present invention relates to a rotor structure in which joule heat, ie, iron loss, which is generated in the iron core when driving a generator and a motor, is reduced. A rotor structure in which iron loss is reduced.
Rotor structure in which the iron loss of the present invention is reduced,
In the rotor structure used for a generator or an electric motor,
A rotating shaft 100 configured horizontally;
A first magnet part 200 formed on the rotating shaft and having at least one pair of N poles and S poles alternately arranged;
A second magnet part 300 coupled to the first magnet part and formed on the rotating shaft, the second magnet part being formed by arranging at least one pair of polarities opposite to the polarity formed in the first magnet part;
The first coil winding part 410 and the second coil winding part 420 are disposed at a right angle to the first magnet part and the second magnet part formed on the rotating shaft so as to be spaced apart at regular intervals, and the first coil winding part And the second coil winding part are formed to be spaced apart from each other at a predetermined interval, and the first coil 500 and the second coil 600 are wound around the first coil winding part and the second coil winding part in parallel with the rotation axis, respectively. Induction core unit 400; characterized in that comprises a.
According to the present invention, the first magnet and the second magnet are configured to have opposite polarities on the rotating shaft, and the two coils are wound instead of one coil on the magnetic induction core. Since it provides the effect of minimizing eddy current loss and hysteresis loss by winding it, it can be applied to the generator to minimize the force hindering the rotation of the generator to increase the efficiency accordingly.
Description
The present invention relates to a rotor structure in which joule heat, that is, iron loss, is reduced in driving a generator and a motor, and more particularly, by minimizing eddy current loss and hysteresis loss by updating a magnet arrangement and a coil winding method. A rotor structure in which iron loss is reduced.
When a magnetic field approaches the conductor, hysteresis and eddy currents occur in the conductor, preventing the magnet from moving.
Nevertheless, if the magnet keeps moving, heat is generated by hysteresis and eddy current, which is iron loss.
Iron loss is generally caused by Joule heat, which is proportional to the square of the current and resistance, and therefore generally occurs in conductors such as steel, nickel, and nichrome wire with high resistance.
Since iron loss is one of the main factors to reduce thermal efficiency in generators and electric motors, various researches have been conducted to minimize iron loss.However, iron cores are laminated like silicon steel, or iron core thickness is not the same as that of amorphous steel. There was no success except by reducing the size of the eddy current by thinning it to / 10.
1 illustrates a basic magnet arrangement of a generator and a motor in which iron loss occurs in the related art. As the
Specifically, when the magnetic field approaches the conductor, hysteresis and eddy current (eddy current) occur in the conductor, and when the magnetic field moves, joule heat is generated by the force that hinders the movement of the magnetic field by the hysteresis and eddy current.
In particular, ferromagnetic materials that adhere well to magnets have higher hysteresis and eddy currents, and also have higher resistance, resulting in greater Joule heat. Iron loss generated in generators, motors, and transformers is a representative example of induction heating by magnetic fields.
Since the iron loss is the main cause of lowering the efficiency of generators, motors, transformers, etc. in order to reduce the iron loss, iron cores laminated with a silicon steel sheet or amorphous iron cores having an eddy current of 1/8 of the silicon steel sheet are used. The reduction remains a long-term challenge for those skilled in the art.
Therefore, the present invention has been proposed in view of the problems of the prior art as described above, and an object of the present invention is to configure the first magnet part and the second magnet part to be opposite in polarity to the rotating shaft, and to include one coil in the magnetic induction core part. The purpose is to minimize the eddy current loss and the hysteresis loss by winding two coils, but winding them in the opposite direction and winding the coils parallel to the axis of rotation.
Another object of the present invention is to enable a selective application according to the intended use by varying the wiring method of the coil according to the case used in series or in parallel.
In order to achieve the problem to be solved by the present invention,
Rotor structure is reduced iron loss according to an embodiment of the present invention,
A
A
A
The first
The rotor structure in which the iron loss is reduced according to the present invention is configured such that the first magnet part and the second magnet part have opposite polarities on the rotating shaft, and wound two coils instead of one coil around the magnetic induction core part. On the contrary, by winding the coil in parallel with the rotating shaft, it provides the effect of minimizing the eddy current loss and the hysteresis loss, and when applied to the generator, it is possible to minimize the force hindering the rotation of the generator and thus increase the efficiency thereof.
In addition, it is possible to provide a high efficiency electric motor by minimizing the heat generated by the iron loss generated through the rotor structure.
In addition, in the coil connection method wound on the rotor structure, it is possible to use a series connection method to increase the voltage or to use a parallel connection method to increase the amount of current, thereby providing an effect that can be selectively applied according to the intended use. do.
1 is a cross-sectional view showing a conventional rotor structure.
Figure 2 is a cross-sectional view showing a rotor structure is reduced iron loss according to an embodiment of the present invention.
Figure 2a is a cross-sectional view showing a rotor structure is reduced iron loss according to an embodiment of the present invention.
3 is an exemplary view showing a magnetic field structure in which iron loss is minimized according to an embodiment of the present invention.
4 is an exemplary view showing a conventional eddy current generating magnetic field structure.
5 is an exemplary view showing a wiring method when using a series of magnetic field structure to minimize the iron loss according to an embodiment of the present invention.
Figure 5a is an exemplary view showing a wiring method in parallel use of the magnetic field structure to minimize the iron loss according to an embodiment of the present invention.
6 is a perspective view showing a generator using a magnetic field structure to minimize iron loss according to an embodiment of the present invention.
7 is a cross-sectional view showing a motor using a magnetic field structure to minimize iron loss according to an embodiment of the present invention.
Rotor structure is reduced iron loss according to an embodiment of the present invention for achieving the above object,
In the rotor structure used for a generator or an electric motor,
A
A
A
The first
At this time, the first coil and the second coil is characterized in that the winding in the opposite direction.
At this time, the first coil and the second coil is wound around the axis of rotation is characterized in that a plurality of the magnetic induction core portion is wound.
At this time, when used in series,
The first coil and the second coil are wound in opposite directions, and the first coil and the second coil are connected.
At this time, when used in parallel,
The first coil and the second coil are wound in opposite directions, and connect the start point A of the first coil and the start point B of the second coil, and the output point A ′ of the first coil and the second coil. The output point B 'of the coil is connected.
At this time, the first magnetic part and the second magnetic part,
Characterized in that the installation is replaced by the first field coil portion and the second field coil portion.
On the other hand, the rotor structure is reduced iron loss according to another embodiment of the present invention,
A first magnet portion formed by alternately arranging at least one pair of N poles (or S poles) and S poles (or N poles) on a rotation axis;
A second magnet part formed by alternately arranging at least one pair of polarities opposite to the polarity formed on the first magnet part;
The first
At this time, when used in series,
The coil wound around the first coil winding and the coil wound around the second coil winding may be connected.
At this time, when used in parallel,
The start point A of the coil wound around the first coil winding part and the start point B of the coil wound around the second coil winding part are connected, and the output point A ′ of the coil wound around the first coil winding part. And an output point B 'of the coil wound around the second coil winding part.
On the other hand, the rotor structure is reduced iron loss according to another embodiment of the present invention,
In the rotor structure used for the electric motor,
A
A
A
The first
Hereinafter, the embodiment of the rotor structure to reduce the iron loss according to the present invention will be described in detail.
Figure 2 is a cross-sectional view showing a rotor structure is reduced iron loss according to an embodiment of the present invention.
Figure 2a is a cross-sectional view showing a rotor structure is reduced iron loss according to an embodiment of the present invention.
As shown in Figure 2, the rotor structure of the present invention is reduced iron loss,
In the rotor structure used for a generator or an electric motor,
A
A
A
The first
At this time, the first coil and the second coil is characterized in that the winding in the opposite direction.
The rotating shaft is generally configured in an electric motor or a generator, and since the first magnet part and the second magnet part are installed, when the rotating shaft rotates, the first magnet part and the second magnet part rotate accordingly.
As shown in FIG. 2, the first magnet part is formed on the rotation shaft, and the N pole and the S pole are alternately formed at least one pair, and the second magnet part is coupled to the first magnet part and formed on the rotation shaft. At least one pair or more of the polarity opposite to the polarity formed on the first magnetic part is alternately formed.
That is, the polarity of the first magnet portion and the polarity of the second magnet portion is arranged opposite to each other, as shown in FIG. 2, the S pole of the second magnet portion is disposed on the N pole of the first magnet portion, The N pole of the second magnet portion is disposed on the S pole.
N poles and S poles shown in FIG. 2 are defined as one pair, and as shown in FIG. 2A, at least one pair means that a plurality of N poles and S poles are configured in one pair.
The magnetic
At this time, a groove having a predetermined size (see drawing) is formed in the central portion of the magnetic induction core part, which has a structure different from that of winding a single coil in a conventional magnetic induction core part.
That is, a groove is formed to wind two coils instead of winding one coil on the magnetic induction core part, whereby a place for winding two coils is formed.
In other words, the first coil winding part and the second coil winding part are formed to be spaced apart from each other by a predetermined interval, and the
The first coil and the second coil may be wound in opposite directions. For example, when the first coil is wound in a counterclockwise direction, the second coil is wound in a clockwise direction, and the first coil is clockwise. When winding in the direction, the second coil should be wound in the counterclockwise direction.
This is because winding in the same direction does not generate current.
3 is an exemplary view showing a magnetic field structure in which iron loss is minimized according to an embodiment of the present invention.
4 is an exemplary view showing a conventional eddy current generating magnetic field structure.
As shown in FIG. 4, in the conventional eddy current generating magnetic field structure, when the N pole approaches a conductor, eddy current is generated in one direction, causing Joule heat to generate heat in the iron core (conductor), and hysteresis loss occurs simultaneously, resulting in iron loss. Will occur.
However, in the magnetic field structure in which the iron loss of the present invention is minimized, the N pole and the S pole approach the conductor at the same time. In this case, the direction of the magnetic field is generated in the opposite direction, so that the eddy current is canceled and hysteresis does not occur.
Therefore, eddy current loss and hysteresis loss are minimized.
That is, when the first magnet portion and the second magnet portion formed on the rotating shaft as described above, the N pole and the S pole pass through the magnetic induction core part at the same time, so the direction of the magnetic field formed at this time is reversed to cancel the eddy current. And no hysteresis occurs, it is possible to provide a better effect of minimizing iron loss than a conventional rotor structure, which is beyond the ordinary predictable range of the skilled person.
In other words, two coils are formed in the magnetic induction core part, but the coils are formed parallel to the rotational axis and at the same time, the configuration in which the coils are reversed in the winding direction is not easily predicted by those skilled in the art.
Therefore, applying the above-described rotor structure to the generator can minimize the force that interferes with the rotation of the generator can be more efficient than before.
In other words, in order to reduce the iron loss mentioned in the background art, a stratified iron core or an amorphous iron core with almost no eddy current is used, but it is still unable to solve the problems of manufacturing difficulties, manufacturing process time delay, and high cost. Iron loss reduction remains a long-term unsolved task for those skilled in the art, but the present invention can solve the long-term unsolved task.
Meanwhile, the first magnetic field coil unit and the second magnetic field coil unit may be installed instead of the first magnetic unit and the second magnetic unit.
5 is an exemplary view showing a wiring method when using a series of magnetic field structure to minimize the iron loss according to an embodiment of the present invention.
As shown in FIG. 5, when used in series, the first coil and the second coil are wound in opposite directions, and the first coil and the second coil are connected.
If the winding direction is in the same direction, for example, the first coil clockwise, if the second coil is also wound clockwise, no current is generated.
At this time, as shown in the drawing, the coil forming the first coil is continuously wound to the second coil winding part, but must be wound in the opposite direction.
Figure 5a is an exemplary view showing a wiring method in parallel use of the magnetic field structure to minimize the iron loss according to an embodiment of the present invention.
As shown in FIG. 5A, when used in parallel, the first coil and the second coil are wound in opposite directions, and connect the start point A of the first coil and the start point B of the second coil, The output point A 'of the first coil and the output point B' of the second coil are connected.
That is, the start point A of the first coil and the start point B of the second coil are connected to each other to connect a + (-) pole, and the output point A 'of the first coil and the output point B' of the second coil. ) To connect the-(+) pole.
Therefore, the series connection method can be used to increase the voltage, or the parallel connection method can be used to increase the amount of current, thereby providing an effect that can be selectively applied according to the intended use.
6 is a perspective view showing a generator using a magnetic field structure to minimize iron loss according to an embodiment of the present invention.
As shown in FIG. 6, when the generator is manufactured using the rotor structure in which the iron loss of the present invention is minimized, a plurality of the magnetic induction core parts of which the first coil and the second coil are wound are spaced at a predetermined interval about the rotation axis. It is formed.
The generator structure of the present invention is a structure for reducing the load, it is possible to minimize the force to interfere with the generator rotation generated in the rotor of the generator when the current flows in the coil (when the load occurs) while removing the iron loss.
7 is a cross-sectional view showing a motor using a magnetic field structure to minimize iron loss according to an embodiment of the present invention.
As shown in Figure 7, when manufacturing the electric motor using a rotor structure is minimized iron loss it is possible to provide a high-efficiency motor by minimizing the heat generated by the iron loss generated, through the structure of the present invention When the motor is driven, the rotational force of the rotor can be maximized.
That is, as shown in the drawing, when the current is supplied to the first coil and the second coil in the opposite direction of the current flow, the force is generated in the first magnet part and the second magnet part in one direction at the same time, and the rotational force and the Torque is generated.
Thus, the force is generated in one direction at the same time, thereby providing a better effect that the rotation force is further increased.
Through the configuration and operation as described above, the first and second magnets are configured to have opposite polarities on the rotating shaft, and the two coils are wound instead of one coil on the magnetic induction core. By winding in parallel with the rotating shaft to provide the effect of minimizing the eddy current loss and hysteresis loss, if applied to the generator can minimize the force hindering the rotation of the generator to increase the efficiency accordingly.
Those skilled in the art to which the present invention pertains as described above may understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not restrictive.
The scope of the invention is indicated by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the invention. do.
100: rotation axis
200: first magnet part
300: second magnet part
400: self-induction core part
410: first coil winding
420: 2nd coil winding part
500: first coil
600: second coil
Claims (13)
A rotating shaft 100 configured horizontally;
A first magnet part 200 formed on the rotating shaft and having at least one pair of N poles and S poles alternately arranged;
A second magnet part 300 coupled to the first magnet part and formed on the rotating shaft, the second magnet part being formed by arranging at least one pair of polarities opposite to the polarity formed in the first magnet part;
The first coil winding part 410 and the second coil winding part 420 are disposed at a right angle to the first magnet part and the second magnet part formed on the rotating shaft so as to be spaced apart at regular intervals, and the first coil winding part And the second coil winding part are formed to be spaced apart from each other at a predetermined interval, and the first coil 500 and the second coil 600 are wound around the first coil winding part and the second coil winding part in parallel with the rotation axis, respectively. Induction core portion 400; Rotor structure is reduced iron loss characterized in that it comprises a.
The rotor structure is reduced iron loss, characterized in that the first coil and the second coil is wound in the opposite direction.
The rotor structure is reduced iron loss, characterized in that for forming a plurality of the magnetic induction core portion winding the first coil and the second coil are spaced about a predetermined interval around the rotation axis.
If using serially,
The first coil and the second coil is wound in the opposite direction, the rotor structure is reduced iron loss, characterized in that for connecting the first coil and the second coil.
If used in parallel,
The first coil and the second coil are wound in opposite directions, and connect the start point A of the first coil and the start point B of the second coil, and the output point A ′ of the first coil and the second coil. Rotor structure is reduced iron loss, characterized in that for connecting the output point (B ') of the coil.
The first magnetic part and the second magnetic part,
Rotor structure is reduced iron loss characterized in that the installation is replaced by the first field coil portion and the second field coil portion.
A second magnet part formed by alternately arranging at least one pair of polarities opposite to the polarity formed on the first magnet part;
The first coil winding portion 410 and the second coil winding portion 420 are spaced apart by a predetermined distance from the outer side of the first magnet portion and the second magnet portion formed on the rotating shaft, the first coil winding portion and the second coil winding The parts are formed to be spaced apart from each other by a predetermined interval, the first coil winding portion and the second coil winding portion magnetic induction core portion 400 is wound in parallel with the axis of rotation, respectively; including the first coil The rotor structure is reduced iron loss, characterized in that for winding the coils respectively wound in the winding portion and the second coil winding portion in the opposite direction.
The rotor structure is reduced iron loss, characterized in that to form a plurality of coils of the magnetic induction core wound around a predetermined interval about the rotation axis.
If using serially,
The rotor structure is reduced iron loss, characterized in that for connecting the coil wound on the first coil winding and the coil wound on the second coil winding.
If used in parallel,
The start point A of the coil wound around the first coil winding part and the start point B of the coil wound around the second coil winding part are connected, and the output point A ′ of the coil wound around the first coil winding part. And a rotor structure, wherein the iron loss is reduced by connecting an output point B 'of the coil wound around the second coil winding part.
The generator is reduced iron loss, characterized in that it comprises a plurality of magnetic induction core parts spaced apart at regular intervals about the rotation axis.
The iron loss is reduced, characterized in that it comprises a plurality of magnetic induction core portion spaced apart from each other by a predetermined interval about the rotation axis.
A rotating shaft 100 configured horizontally;
A first magnet part 200 formed on the rotating shaft and having at least one pair of N poles and S poles alternately arranged;
A second magnet part 300 coupled to the first magnet part and formed on the rotating shaft, the second magnet part being formed by arranging at least one pair of polarities opposite to the polarity formed in the first magnet part;
The first coil winding part 410 and the second coil winding part 420 are disposed at a right angle to the first magnet part and the second magnet part formed on the rotating shaft so as to be spaced apart at regular intervals, and the first coil winding part And the second coil winding part are formed to be spaced apart from each other at a predetermined interval, and the first coil 500 and the second coil 600 are wound around the first coil winding part and the second coil winding part in parallel with the rotation axis, respectively. Rotor structure is configured to include, including; core, characterized in that the iron loss is reduced to provide a current by changing the direction of the current to the first coil and the second coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100022479A KR101186992B1 (en) | 2010-03-12 | 2010-03-12 | Rotor having low iron loss. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100022479A KR101186992B1 (en) | 2010-03-12 | 2010-03-12 | Rotor having low iron loss. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20110103247A true KR20110103247A (en) | 2011-09-20 |
| KR101186992B1 KR101186992B1 (en) | 2012-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020100022479A KR101186992B1 (en) | 2010-03-12 | 2010-03-12 | Rotor having low iron loss. |
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| KR (1) | KR101186992B1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57110063A (en) | 1980-12-24 | 1982-07-08 | Tadashi Sato | Power generator |
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2010
- 2010-03-12 KR KR1020100022479A patent/KR101186992B1/en active IP Right Grant
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| Publication number | Publication date |
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| KR101186992B1 (en) | 2012-09-28 |
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