WO2006019058A1 - 可変磁気抵抗型発電装置 - Google Patents
可変磁気抵抗型発電装置 Download PDFInfo
- Publication number
- WO2006019058A1 WO2006019058A1 PCT/JP2005/014846 JP2005014846W WO2006019058A1 WO 2006019058 A1 WO2006019058 A1 WO 2006019058A1 JP 2005014846 W JP2005014846 W JP 2005014846W WO 2006019058 A1 WO2006019058 A1 WO 2006019058A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- rotor
- poles
- rotor core
- rotation
- Prior art date
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Classifications
-
- 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
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
- H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
Definitions
- the present invention relates to a variable magnetoresistive power generator that uses reluctance (magnetoresistance).
- a reluctance motor using variable reluctance is manufactured by punching and laminating electromagnetic steel sheets for both the stator and rotor, and the winding is concentrated on the stator poles and not applied to the rotor. Also, permanent magnets are not used. Therefore, it is excellent as a rotating machine because its structure is extremely simple and robust compared to general induction machines and synchronous machines, it is easy to maintain, suitable for high-speed rotation, and high efficiency is expected because there is no rotor copper loss. Has features. Due to these excellent characteristics, the range of applications is expanding, such as being put into practical use as washing machines, vacuum cleaners, and hydraulic pump drive motors.
- These reluctance motors can obtain continuous rotation by appropriately switching (switching) the stator pole (saliency pole) to be excited according to the rotor position. Depending on the case, negative torque can be generated. Therefore, if the rotor is forcibly rotated by an external force and the excitation timing is adjusted appropriately, it operates as a power generator that converts the external force into electric power.
- variable magnetoresistive power generator using such a reluctance motor as a power generator is driven by an excitation power source, a rotor position sensor, and an excitation coil.
- power supplies for excitation such as remote islands and mountains In areas where it is difficult to secure and maintain the system, there is a problem that the installation of these complicated systems and excitation power supplies may be an obstacle to the installation.
- the present invention has been made paying attention to such problems, and a variable magnetoresistive power generator having a new structure capable of simplifying a system required for power generation and obtaining large power.
- the purpose is to provide.
- variable magnetoresistive power generation device provides:
- stator salient poles formed on the inner periphery of the annularly formed stator yoke so as to protrude inward of the stator yoke;
- a power generation coil provided on the stator salient pole
- the stator yoke is coaxially and rotatably arranged on the stator yoke, and at the predetermined angular position of rotation, reduces the magnetic resistance between at least two stator salient poles, and the stator salient poles at the predetermined angular position of rotation.
- the rotor core pole portion is provided on the stator yoke portion that forms a magnetic path between stator salient poles whose magnetic resistance is reduced at a predetermined angular position of rotation of the rotor core.
- the magnetic resistance between the stator salient poles where the pole part of the rotor core is close to the stator salient poles is small. Since the magnetic circuit is formed, the magnetic flux linkage in the power generation coil is increased, while the rotor core further rotates and the magnetic resistance between the stator salient poles where the non-polar portion of the rotor core is close to the stator salient poles. In the large heel state, the magnetic circuit is cut between the stator salient poles, so that Thus, the magnetic resistance between the stator salient poles to which the magnetic force is applied by the exciting means is greatly changed by the rotation of the rotor core, so that the power generating coil provided on the stator salient poles is reduced. Since the winding flux linkage in the coil changes greatly, a simpler system that does not require a rotor position sensor or a drive circuit for driving the excitation coil as in the prior art can be used. Large power can be obtained by a large change in the magnetic flux.
- variable magnetoresistive power generator according to claim 2 of the present invention is the variable magnetoresistive power generator according to claim 1,
- the exciting means is a permanent magnet.
- an excitation power source is not required, and the system required for power generation can be further simplified.
- the configuration of the power generation apparatus itself can be simplified.
- variable magnetoresistive power generator according to claim 3 of the present invention is the variable magnetoresistive power generator according to claim 1 or 2
- the exciting means is provided at a position where the distances between the stator salient pole forces at which the magnetic resistance is reduced at a predetermined angular position of the rotation of the rotor core are substantially equal.
- the magnetic force applied to each stator salient pole by the exciting means can be made substantially uniform, so that the difference in magnitude of the attractive force (magnetic force) that the stator core also receives each stator salient pole force is reduced, and power generation The vibration of the device can be reduced.
- FIG. 1 is a perspective view showing a configuration of a variable magnetoresistive power generator according to an embodiment of the present invention.
- FIG. 2 (a) is a top view showing a configuration of a variable magnetoresistive power generator in an embodiment of the present invention
- FIG. 2 (b) shows a configuration of a variable magnetoresistive power generator in an embodiment of the present invention. It is sectional drawing shown.
- FIG. 3 is a diagram showing an operation state of the variable magnetoresistive power generator in the embodiment of the present invention.
- FIG. 4 is a diagram showing a configuration of an evaluation system for measuring the power generation efficiency of the variable magnetoresistive power generator in the embodiment of the present invention.
- FIG. 7 is a diagram showing another embodiment of the present invention.
- FIG. 8 is a diagram showing a conventional example.
- FIG. 1 is a perspective view showing an overall image of a variable magnetoresistive power generator (reluctance generator) in the present embodiment
- FIG. ) Is a top view of the variable magnetoresistive power generator (reluctance generator) according to the present embodiment as viewed from the opening 6 ′ described later
- FIG. 2 (b) is a variable magnetoresistive power generator according to the present embodiment. It is a sectional side view of a (reluctance generator).
- a variable magnetoresistive power generator 9 mainly includes a stator core 1 that is a square ring that serves as a stator yoke in the present invention, and the stator core.
- the rotor 10 is a rotor core of the present invention that is coaxially and rotatably disposed in 1 and a bottomed cylindrical outer case 6 that accommodates the stator core 1 and the rotor 10. Yes.
- the stator core 1 used in this example is formed by laminating non-oriented electrical steel sheets having a thickness of 0.35mm, a height of 127mm, and a width of 78mm to a thickness of 20mm.
- Bolts 4 are formed in the parts, and in a state where these bolts 4 are inserted into the mounting holes 8 formed in the bottom 12 of the outer case 6, the stator core 1 is secured to the bottom of the outer case 6 by the nut N. Fixed to 12.
- a bearing 7 for supporting the rotating shaft 11 of the rotor 10 is provided, and an opening of the outer case 6 is provided.
- the sealing lid 13 that closes 6 ′ has four mounting holes 8 ′ and the center of these four mounting holes 8 ′ (same as the center of the sealing lid 13) with the rotating shaft 11 of the rotor 10.
- Bearings 7 'for supporting the shaft are provided, and the rotating shaft 11 of the rotor 10 is supported by these bearings 7, 7', and the bolt portion 4 is inserted into the mounting hole 8 '.
- the sealing lid 13 is attached to the outer case 6 by the nut N and the opening 6 'is closed, so that the rotor 10 is arranged coaxially and rotatably on the stator core 1. ! /
- FIGs. 1 and 2 two protrusions formed on the inner peripheral portion of the stator core 1 used in this embodiment so as to protrude inwardly of the stator core 1.
- Pole 2 faces each other
- winding wires are concentrated and a power generation coil 3 is formed.
- the number of windings was 1200, and the winding resistance was 5.24 ⁇ .
- stator core 1 positions on the stator core 1 where the distances from these salient poles 2 are substantially equal, that is, the two side portions where the salient poles 2 of the square annular stator core 1 are not formed.
- two permanent magnets 5 serving as excitation means in the present invention are provided by being bonded and fixed to the stator core 1 in a form that replaces part of the square annular stator core 1,
- Each of these permanent magnets 5 is magnetized in the vertical direction in the drawing, that is, in the direction along the outer periphery of the stator core 1, and the magnetic force of each of these permanent magnets 5 is passed through the stator core 1 serving as a magnetic path.
- the longitudinal length of the permanent magnet used in this example is 21 mm.
- the permanent magnets 5 are arranged at positions where the distances from the respective salient poles 2 are substantially equal. Since the magnetic force applied to 2 can be made almost uniform, the magnitude of the attractive force (magnetic force) received by the rotor 10 from each salient pole 2 can be made substantially the same, and therefore the magnitude of these attractive forces (magnetic force) This is preferable because the variation in the rotation of the rotor 10 due to the difference (due to the variation) is reduced and the vibration of the variable magnetoresistive generator 9 can be reduced.
- the present invention is not limited to this.
- the arrangement positions of the permanent magnets 5 as the excitation means may be appropriately selected so that the magnetic forces applied to the salient poles 2 are substantially equal.
- a force illustrating a single-phase variable magnetoresistive power generation device 9 having a pair of opposed salient poles 2 The present invention is not limited to this single-phase.
- the variable magnetoresistive power generator 9 can be a unit, for example, a plurality of units can be shifted to each other by 90 or 120 degrees with respect to the rotation angle and assembled coaxially to form a two-phase or three-phase power generator.
- three sets of salient poles are formed to face the inner circumference of one circular annular stator core with two permanent magnets. It may be a device.
- the force with two permanent magnets is not limited to this.
- four permanent magnets 5 ′ are provided and excited.
- a permanent magnet (excitation means) for applying a magnetic force to a salient pole that is provided in a stator yoke and has a power generating coil is provided with at least one salient pole. What is necessary is just to arrange
- the magnet material used as the permanent magnet 5 is preferably made of samarium 'cobalt (Sm-Co) in the present embodiment, which has a strong magnetic force, excellent coercive force, and is preferable to be strong and inexpensive.
- Sm-Co samarium 'cobalt
- the present invention is not limited to this, and these magnet materials may be appropriately selected depending on the power generation amount to be obtained and the scale of the power generation device.
- the permanent magnet 5 is used as the excitation means, and this is preferable because no separate excitation power source is required, but the present invention is not limited to this.
- an excitation means an excitation coil may be provided instead of the permanent magnet 5, and the excitation coil may be driven by an excitation power source to apply a magnetic force to the salient pole 2.
- the rotor 10 is also a non-directional electromagnetic punched out in a substantially cross shape having four protrusions 1 Oa and four recesses 10b alternately. It is formed by laminating steel plates (0.5 mm) to a thickness of 42 mm, similar to the stator core 1, with the rotating shaft 11 inserted through the center, and the same as the conventional switch trilatance motor. It has a structure.
- the length between the projecting portions 10a facing each other in a substantially cross shape, that is, the diameter of the rotor 10 at the projecting portions 10a is slightly shorter than the interval between the projecting poles 2 arranged to face each other.
- the rotational position of the rotor 10 is a position where these protrusions 10a face the salient poles 2, the distance between each salient pole 2 and the rotor 10 is small, so that the magnetic resistance between each salient pole 2 is reduced.
- these protrusions 10a are not in a position facing the salient pole 2, that is, When the portion 10b is at a position facing the salient poles 2, the distance between each salient pole 2 and the rotor 10 increases, so that the magnetic resistance between each salient pole 2 increases. Therefore, this protrusion 10a corresponds to the pole part in the present invention, and the recess 10b corresponds to the non-polar part in the present invention.
- the outer diameter of the protrusion 10a of the rotor 10 used in this example is about 40 mm.
- the force with the rotor 10 having a salient pole structure is not limited to this.
- the outer periphery of the rotor 10 may be formed in a cylindrical shape by providing a non-magnetic material, and a non-oriented electrical steel sheet is punched into a disk shape, and a large number of slits are formed in the region corresponding to the recess 10b. Thus, a non-polar part may be formed.
- the rotor 10 (rotor core) is further rotated to form a non-polar portion 10b of the present invention while the winding flux in the provided power generation coil 3 increases.
- the magnetic resistance increases, Permanent magnet 5 ⁇ Stator core 1 ⁇ Salient pole 2 ⁇ Rotor 10 ⁇ Salient pole 2 ⁇ Stator core 1 ⁇ Permanent magnet 5
- the magnetic circuit will be cut off.
- the magnetic flux linkage is reduced, and thus the magnetoresistive force between the salient poles 2 to which the magnetic force is applied by the permanent magnet 5 is greatly changed by the rotation of the rotor 10 (rotor core). Since the winding flux linkage in the power generating coil 3 provided in 2 changes greatly, large power can be obtained by the large change in the winding linkage flux.
- FIGS. 5 (a) to 5 (c) show the results of measuring the relationship between the machine input to be applied and the output power output from the variable magnetoresistive generator 9 at each rotation speed.
- the value of the machine input P (m) was obtained by using the formula shown in FIG.
- the number of rotations is 1200 rpm (Fig. 5 (a)), 3002 rpm (Fig. 5 (b)), and 4765 rpm (Fig. 5 (c)).
- a conversion efficiency exceeding 70% was obtained at 1200 rpm, the output power was about 5 W (0.2 A), 3002 rpm and 4765 min. It can be seen that even at high speeds of rotation, a conversion efficiency of up to about 60% is obtained, and the output power is up to 12W or 20W.
- variable magnetoresistive power generation device 9 of the present embodiment a large amount of electric power is obtained as an experimental value, but a larger output power, specifically a calculated value by the finite element method, can be obtained. It is calculated that about 50 W can be obtained at 3000 revolutions per minute, and the reason why the output power in this example is smaller than these calculation results is considered to be due to the deterioration of the characteristics of the magnet used. It should be noted that, in these theoretical values, the output power when the permanent magnet is arranged on the salient pole 2 shown in FIG. 8 is the same as the stator core 1 and rotor of the present embodiment. Even if 10 (rotor core) is used, it has been calculated that the maximum power generation of 5-6W cannot be obtained, and the output power when a permanent magnet is placed on these salient poles 2 is from 5-6W. Is expected to be even smaller It is.
- these winding interlinkage magnetic fluxes can be obtained in a simpler system without requiring a rotor position sensor, a driving circuit for driving an exciting coil, or the like as in the prior art. Large electric power can be efficiently obtained by a large change.
- an excitation power source is unnecessary, and the system necessary for power generation can be further simplified, and it is not necessary to form an excitation coil.
- the body structure can also be simplified.
- the permanent magnet 5 as an exciting means or the exciting coil is formed on the stator core 1 separated from the salient pole 2, so that, for example, the permanent magnet 5 or the exciting coil is formed.
- the permanent magnet 5 and exciting coils are also possible to improve the accessibility to these permanent magnets 5 and exciting coils during maintenance, and even if replacement is required, they can be easily replaced. It becomes like this.
- the exciting coil including the permanent magnet and the iron core may be detachably attached to the stator core 1 by providing a pocket or the like for mounting on the stator core 1, for example.
- the present invention can be applied to a wind power generator, and can also be applied to a micro gas turbine or the like.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004239067A JP2007312444A (ja) | 2004-08-19 | 2004-08-19 | 可変磁気抵抗型発電装置 |
JP2004-239067 | 2004-08-19 |
Publications (1)
Publication Number | Publication Date |
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WO2006019058A1 true WO2006019058A1 (ja) | 2006-02-23 |
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ID=35907446
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/014846 WO2006019058A1 (ja) | 2004-08-19 | 2005-08-12 | 可変磁気抵抗型発電装置 |
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JP (1) | JP2007312444A (ja) |
WO (1) | WO2006019058A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007113651A2 (en) * | 2006-04-04 | 2007-10-11 | Toyota Jidosha Kabushiki Kaisha | Motor and electric power supply control apparatus for the motor |
CN107026550A (zh) * | 2017-05-19 | 2017-08-08 | 北京航空航天大学 | 一种混合励磁开关磁阻电机 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9018815B2 (en) | 2009-02-14 | 2015-04-28 | Tohoku University | Generator |
JP5335509B2 (ja) * | 2009-03-25 | 2013-11-06 | 本田技研工業株式会社 | 回転電機 |
EP2299566A1 (de) * | 2009-09-17 | 2011-03-23 | PM-Generators GmbH | Wind- oder Wasserenergieanlage |
WO2015029105A1 (ja) * | 2013-08-26 | 2015-03-05 | 三菱電機株式会社 | 電動機 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11308829A (ja) * | 1997-10-07 | 1999-11-05 | Valeo Equip Electric Moteur | 電気機械、特に自動車用の同期発電機 |
JPH11514195A (ja) * | 1995-07-05 | 1999-11-30 | エレクトリック・パワー・リサーチ・インスティチュート・インコーポレーテッド | 界磁弱化(又は増強)機能を備えた二重突極永久磁石機械 |
-
2004
- 2004-08-19 JP JP2004239067A patent/JP2007312444A/ja active Pending
-
2005
- 2005-08-12 WO PCT/JP2005/014846 patent/WO2006019058A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11514195A (ja) * | 1995-07-05 | 1999-11-30 | エレクトリック・パワー・リサーチ・インスティチュート・インコーポレーテッド | 界磁弱化(又は増強)機能を備えた二重突極永久磁石機械 |
JPH11308829A (ja) * | 1997-10-07 | 1999-11-05 | Valeo Equip Electric Moteur | 電気機械、特に自動車用の同期発電機 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007113651A2 (en) * | 2006-04-04 | 2007-10-11 | Toyota Jidosha Kabushiki Kaisha | Motor and electric power supply control apparatus for the motor |
WO2007113651A3 (en) * | 2006-04-04 | 2008-06-05 | Toyota Motor Co Ltd | Motor and electric power supply control apparatus for the motor |
US7868505B2 (en) | 2006-04-04 | 2011-01-11 | Toyota Jidosha Kabushiki Kaisha | Motor and electric power supply control apparatus for the motor |
CN107026550A (zh) * | 2017-05-19 | 2017-08-08 | 北京航空航天大学 | 一种混合励磁开关磁阻电机 |
CN107026550B (zh) * | 2017-05-19 | 2019-07-02 | 北京航空航天大学 | 一种混合励磁开关磁阻电机 |
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Publication number | Publication date |
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JP2007312444A (ja) | 2007-11-29 |
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