WO2011095006A1 - Permanent magnet generator directly driven by wind wheel - Google Patents
Permanent magnet generator directly driven by wind wheel Download PDFInfo
- Publication number
- WO2011095006A1 WO2011095006A1 PCT/CN2010/076895 CN2010076895W WO2011095006A1 WO 2011095006 A1 WO2011095006 A1 WO 2011095006A1 CN 2010076895 W CN2010076895 W CN 2010076895W WO 2011095006 A1 WO2011095006 A1 WO 2011095006A1
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- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- stator
- magnetic
- permanent magnet
- center line
- Prior art date
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Classifications
-
- 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
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset 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
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the invention belongs to the technical field of generators, and in particular relates to a permanent magnet generator driven by a wind wheel.
- vertical axis wind power generation devices are more popular than horizontal axis wind power generation devices, because vertical axis wind power generation devices have simple design and manufacture of wind blades, low cost, no need for wind turbines, low starting wind speed, high utilization of wind energy, and basically no It has outstanding advantages such as aerodynamic noise, and many countries are working on further research and improvement on the blades and impellers of vertical-axis wind turbines in order to achieve higher power and efficiency for vertical-axis wind turbines.
- the current generators used in vertical-axis wind power generators generally use a permanent magnet generator of a conventional structure, that is, the stator is fixed to the stator shaft, and the rotor acts as a generator housing around the stator and passes through the side cover.
- the movable end is connected to the stator fixed shaft, wherein one end cover of the rotor is connected with the wind wheel, and the central shaft of the wind wheel is connected with the stator fixed shaft through the flange, so that the rotor rotates by the wind wheel;
- a permanent magnet corresponding to the iron core of the stator is pasted, and the permanent magnet is formed by stitching a plurality of planar magnetic sheets without gaps, and has the disadvantage that since the magnetic sheets are in close proximity, the S poles attract each other, and The magnetic circuit is irregular and the magnetic density is reduced.
- the center line of each of the existing groove of the stator is parallel to the center line of the fixed axis of the stator, and the structure causes a large magnetic resistance torque, that is, a large torque of the wind wheel, so the wind wheel The starting wind speed needs to be higher and the wind energy utilization rate is lower.
- the object of the present invention is to improve the permanent magnet generator of the existing vertical axis wind power generation device, thereby providing a magnetic circuit rule, a high magnetic density, a small magnetic resistance torque, a small wind wheel resistance torque, and a wind turbine starting wind speed.
- the lower wind turbine with higher wind energy utilization directly drives the permanent magnet generator.
- the technical solution of the present invention comprises: a stator, a stator fixed shaft, and a rotor surrounding the stator and movably connected to the fixed shaft of the stator, and a permanent magnet corresponding to the iron core of the stator is adhered to the inner side of the rotor, the stator core
- An angle ⁇ is formed between the center line of each of the welt grooves and the center line of the stator fixed shaft, and the permanent magnets on the inner side of the rotor are magnetic tiles, and the arc of the magnetic tile is the same as the inner side of the rotor.
- a certain distance d is maintained between the magnetic tiles.
- the angle ⁇ between the center line of each of the stator core grooves and the center line of the stator fixed shaft is preferably 3 to 4 degrees.
- the distance d between the magnetic tiles on the inner side of the rotor is preferably 6 to 7.5 mm.
- the rotor permanent magnet is made of neodymium iron boron.
- the beneficial effects of the invention are as follows: after the center line of each of the stator core groove and the center line of the stator fixed shaft is designed to be at an angle, the wire in the stator core wire groove and the magnetic field line of the permanent magnet of the rotor are originally cut perpendicularly. Change to non-vertical cutting, thereby reducing the magnetic resistance torque and further reducing the rotational resistance torque of the wind wheel, so that the effective working wind speed range of the wind wheel is expanded; in addition, the magnetic pieces constituting the permanent magnet of the rotor are changed from flat sheets to tiles and mutually A certain distance is spaced apart, so that the mutual attraction between the magnetic sheets is effectively avoided, so that the formed permanent magnets have a regular magnetic circuit and a high magnetic density.
- the invention effectively improves the efficiency of the wind power generation device and increases the power generation amount.
- Figure 1 is a schematic view of the overall structure of the present invention.
- FIG. 2 is a schematic cross-sectional view of a rotor of the present invention.
- Fig. 3 is a schematic view showing the unfolded structure of the A-A section of Fig. 2.
- a wind wheel directly drives a permanent magnet generator with a power of 10 kW, and is composed of a stator 4 and a stator fixed shaft 1 and a rotor 3.
- a stator 6 is fixed at one end of the stator fixed shaft 1 so as to be connected with the central end of the wind wheel.
- the flanges are connected.
- the stator 4 is composed of a core 41 and a coil winding 42, and the core 41 is provided with 36 welt grooves 411 on the circumferential surface thereof, and the angle between the center line of each of the welt grooves 411 and the stator fixed shaft center line is 3 degree.
- the rotor 3 is composed of a rotating tube 32 and a first end cover 31 of the end of the rotating drum 32, and a second end cover 34 at the other end of the rotating drum 32.
- the rotating sleeve 32 is enclosed outside the stator 4, and the first end cover 31 passes through
- the first bearing 2 and the second end cover 34 are connected to the stator fixing shaft 1 through the second bearing 5, and the second end cover 34 is a flange cover connected to the wind wheel, and the inner side surface of the rotating drum 32 is pasted with
- the spacing d is 7 mm.
Abstract
A permanent magnet generator directly driven by a wind wheel comprises a stator (4), a fixed stator shaft (1) and a rotor (3) around the stator (4) and movably connected with the fixed stator shaft (1). Permanent magnets (33) opposite to a stator core (41) are stuck on an inner lateral surface of the rotor (3). A certain included angle α is formed between a center line of each wire inserting slot (411) of the stator core (41) and a center line of the fixed stator shaft (1). The permanent magnets (33) stuck on the inner lateral surface of the rotor (3) are magnetic shoes. Each magnetic shoe and the inner lateral surface of the rotor (3) are of the same radian. A certain distance d is kept between adjacent said magnetic shoes. Conductors in each wire inserting slot (411) of the stator core (41) and magnetic lines of force of the rotor permanent magnets (33) are changed from vertical cutting to non-vertical cutting in the generator. Therefore a magnetic resisting moment is reduced, thus the rotating resisting moment of the wind wheel is reduced. A range of an effective working wind speed is expanded. The rotor permanent magnets (33) of the generator are provided with a regular magnetic circuit and a high magnetic density. Thus, efficiency of the wind-driven power generating device can be effectively improved, and electricity generated is increased.
Description
说 明 书 风轮直驱动永磁发电机 技术领域 Description Wind wheel direct drive permanent magnet generator Technical field
本发明属于发电机技术领域， 特别是涉及一种风轮直驱动的永磁发电机。 The invention belongs to the technical field of generators, and in particular relates to a permanent magnet generator driven by a wind wheel.
背景技术 Background technique
目前， 垂直轴风力发电装置较水平轴风力发电装置更为流行， 因为垂直轴 风力发电装置具有风叶片设计制造简单，造价低，不需对风装置，起动风速低、 风能利用率高、 基本不产生气动噪声等突出的优点， 而且许多国家正在致力于 对垂直轴风力发电装置的风叶片、 叶轮作进一步研究改进， 以期使垂直轴风力 发电装置达到更高的功率和效率。但目前应用于垂直轴风力发电装置的发电机, 一般还是釆用传统结构的永磁发电机， 即其定子固定于定子轴上， 而转子则作 为发电机壳体围绕定子并通过两侧端盖活动连接于定子固定轴上， 其中转子的 一侧端盖与风轮相连接， 风轮的中心轴与定子固定轴通过法兰相连接， 从而由 风轮带动转子旋转； 所述转子内侧面上粘贴有与定子的铁芯相对应的永磁体， 该永磁体是由若干平面磁片无间隙拼接而成， 其存在的缺点是， 由于磁片之间 十分接近， 其 、 S极相吸， 而致磁路不规则， 磁密度减少； 另外， 现有定子 的各嵌线槽中心线与定子固定轴中心线相平行， 该结构造成磁性阻力矩大， 也 即风轮阻力矩大， 因而风轮起动风速需较高而致风能利用率较低。 At present, vertical axis wind power generation devices are more popular than horizontal axis wind power generation devices, because vertical axis wind power generation devices have simple design and manufacture of wind blades, low cost, no need for wind turbines, low starting wind speed, high utilization of wind energy, and basically no It has outstanding advantages such as aerodynamic noise, and many countries are working on further research and improvement on the blades and impellers of vertical-axis wind turbines in order to achieve higher power and efficiency for vertical-axis wind turbines. However, the current generators used in vertical-axis wind power generators generally use a permanent magnet generator of a conventional structure, that is, the stator is fixed to the stator shaft, and the rotor acts as a generator housing around the stator and passes through the side cover. The movable end is connected to the stator fixed shaft, wherein one end cover of the rotor is connected with the wind wheel, and the central shaft of the wind wheel is connected with the stator fixed shaft through the flange, so that the rotor rotates by the wind wheel; A permanent magnet corresponding to the iron core of the stator is pasted, and the permanent magnet is formed by stitching a plurality of planar magnetic sheets without gaps, and has the disadvantage that since the magnetic sheets are in close proximity, the S poles attract each other, and The magnetic circuit is irregular and the magnetic density is reduced. In addition, the center line of each of the existing groove of the stator is parallel to the center line of the fixed axis of the stator, and the structure causes a large magnetic resistance torque, that is, a large torque of the wind wheel, so the wind wheel The starting wind speed needs to be higher and the wind energy utilization rate is lower.
发明内容 Summary of the invention
本发明的目的，是对现有垂直轴风力发电装置的永磁发电机进行技术改进 , 从而提供一种磁路规则、 磁密度高、 磁性阻力矩小而风轮阻力矩小、 风轮起动 风速较低、 风能利用率较高的风轮直驱动永磁发电机。 The object of the present invention is to improve the permanent magnet generator of the existing vertical axis wind power generation device, thereby providing a magnetic circuit rule, a high magnetic density, a small magnetic resistance torque, a small wind wheel resistance torque, and a wind turbine starting wind speed. The lower wind turbine with higher wind energy utilization directly drives the permanent magnet generator.
本发明的技术解决方案为： 包括定子、 定子固定轴和围绕定子并活动连接 于定子固定轴上的转子， 转子内侧面上粘贴有与定子的铁芯相对应的永磁体， 所述定子铁芯各嵌线槽中心线与定子固定轴中心线之间设有夹角 α , 所述转子 的内侧面上粘贴的永磁体釆用磁瓦， 磁瓦的弧度与转子的内侧面弧度相同， 所
述各磁瓦间保持一定间距 d。 The technical solution of the present invention comprises: a stator, a stator fixed shaft, and a rotor surrounding the stator and movably connected to the fixed shaft of the stator, and a permanent magnet corresponding to the iron core of the stator is adhered to the inner side of the rotor, the stator core An angle α is formed between the center line of each of the welt grooves and the center line of the stator fixed shaft, and the permanent magnets on the inner side of the rotor are magnetic tiles, and the arc of the magnetic tile is the same as the inner side of the rotor. A certain distance d is maintained between the magnetic tiles.
所述定子铁芯各嵌线槽中心线与定子固定轴中心线之间夹角 α优选 3 ~ 4 度。 The angle α between the center line of each of the stator core grooves and the center line of the stator fixed shaft is preferably 3 to 4 degrees.
所述转子内侧面各磁瓦的间距 d优选 6 ~ 7.5mm。 The distance d between the magnetic tiles on the inner side of the rotor is preferably 6 to 7.5 mm.
所述转子永磁体的材质为钕铁硼。 The rotor permanent magnet is made of neodymium iron boron.
本发明的有益效果是： 将定子铁芯各嵌线槽中心线与定子固定轴中心线之 间设计成夹角后， 使定子铁芯嵌线槽中的导线与转子永磁体磁力线原为垂直切 割改变为非垂直切割， 从而减小磁性阻力矩并进而减小风轮转动阻力矩， 使风 轮有效工作风速范围扩大； 另外， 将构成转子永磁体的磁片由平片改为瓦片并 相互间隔一定距离， 从而有效地避免各磁片间的相吸， 从而使所构成的永磁体 磁路规则、磁密度高。本发明有效地提高了风力发电装置效率，提高了发电量。 The beneficial effects of the invention are as follows: after the center line of each of the stator core groove and the center line of the stator fixed shaft is designed to be at an angle, the wire in the stator core wire groove and the magnetic field line of the permanent magnet of the rotor are originally cut perpendicularly. Change to non-vertical cutting, thereby reducing the magnetic resistance torque and further reducing the rotational resistance torque of the wind wheel, so that the effective working wind speed range of the wind wheel is expanded; in addition, the magnetic pieces constituting the permanent magnet of the rotor are changed from flat sheets to tiles and mutually A certain distance is spaced apart, so that the mutual attraction between the magnetic sheets is effectively avoided, so that the formed permanent magnets have a regular magnetic circuit and a high magnetic density. The invention effectively improves the efficiency of the wind power generation device and increases the power generation amount.
附图说明 DRAWINGS
图 1为本发明总体结构示意图。 Figure 1 is a schematic view of the overall structure of the present invention.
图 2为本发明的转子截面结构示意图。 2 is a schematic cross-sectional view of a rotor of the present invention.
图 3为图 2的 A- A剖面展开结构示意图。 Fig. 3 is a schematic view showing the unfolded structure of the A-A section of Fig. 2.
具体实施方式 detailed description
下面结合附图以实施例对本发明作进一步说明。 The present invention will be further described by way of embodiments with reference to the accompanying drawings.
一种风轮直驱动永磁发电机， 功率为 10千瓦， 由定子 4及定子固定轴 1 和转子 3构成， 定子固定轴 1的其中一端固定有法兰 6, 以便于与风轮中心轴 端法兰相连接。所述定子 4由铁芯 41与线圏绕组 42组成，而铁芯 41周面上均 布有 36条嵌线槽 411,各嵌线槽 411中心线与定子固定轴中心线夹角 α为 3度。 所述转子 3由转筒 32与转筒 32—端的第一端盖 31、 转筒 32另一端的第二端 盖 34构成， 转筒 32围罩在定子 4外， 其第一端盖 31通过第一轴承 2、 第二端 盖 34通过第二轴承 5与定子固定轴 1相连接， 且第二端盖 34是与风轮相连接 的法兰盖， 转筒 32的内侧面上粘贴有与定子的铁芯 41相对应的永磁体 33, 所 述永磁体 33釆用 8对由钕铁硼材料制作的磁瓦，磁瓦的弧度与转子 3的内侧面 弧度相同， 所述各磁瓦的间距 d为 7mm。
A wind wheel directly drives a permanent magnet generator with a power of 10 kW, and is composed of a stator 4 and a stator fixed shaft 1 and a rotor 3. A stator 6 is fixed at one end of the stator fixed shaft 1 so as to be connected with the central end of the wind wheel. The flanges are connected. The stator 4 is composed of a core 41 and a coil winding 42, and the core 41 is provided with 36 welt grooves 411 on the circumferential surface thereof, and the angle between the center line of each of the welt grooves 411 and the stator fixed shaft center line is 3 degree. The rotor 3 is composed of a rotating tube 32 and a first end cover 31 of the end of the rotating drum 32, and a second end cover 34 at the other end of the rotating drum 32. The rotating sleeve 32 is enclosed outside the stator 4, and the first end cover 31 passes through The first bearing 2 and the second end cover 34 are connected to the stator fixing shaft 1 through the second bearing 5, and the second end cover 34 is a flange cover connected to the wind wheel, and the inner side surface of the rotating drum 32 is pasted with The permanent magnet 33 corresponding to the iron core 41 of the stator, the permanent magnet 33 is made of 8 pairs of magnetic tiles made of neodymium iron boron material, the curvature of the magnetic tile is the same as the inner side curvature of the rotor 3, and the magnetic tiles are The spacing d is 7 mm.
Claims
1、 一种风轮直驱动永磁发电机， 包括定子（4)、 定子固定轴（1)和围绕 定子（4)并活动连接于定子固定轴（1)上的转子（3), 转子（3) 内侧面上粘 贴有与定子的铁芯（ 41 )相对应的永磁体（ 33 )，其特征在于所述定子铁芯（ 41 ) 各嵌线槽中心线与定子固定轴（1) 中心线之间设有夹角 α, 所述转子（3) 的 内侧面上粘贴的永磁体（33)釆用磁瓦， 磁瓦的弧度与转子（3) 的内侧面弧度 相同， 所述各磁瓦间保持一定间距 d。 1. A wind wheel direct drive permanent magnet generator comprising a stator (4), a stator fixed shaft (1), and a rotor (3) surrounding the stator (4) and movably coupled to the stator fixed shaft (1), the rotor ( 3) A permanent magnet (33) corresponding to the iron core (41) of the stator is attached to the inner side surface, and is characterized in that the center line of each of the stator cores (41) and the stator fixed shaft (1) center line An angle α is provided between the permanent magnets (33) affixed on the inner side of the rotor (3), and the arc of the magnetic watt is the same as the inner side of the rotor (3). Keep a certain distance d between them.
2、 按权利要求 1所述的风轮直驱动永磁发电机， 其特征在于所述转子（3) 内侧面各磁瓦的间距 d为 6~7.5mm。 2. The wind turbine direct drive permanent magnet generator according to claim 1, characterized in that the distance d between the magnetic tiles on the inner side of the rotor (3) is 6 to 7.5 mm.
3、 按权利要求 1或 2所述的风轮直驱动永磁发电机， 其特征在于所述转子 永磁体（33) 的材质为钕铁硼。 3. A wind turbine direct drive permanent magnet generator according to claim 1 or 2, characterized in that the rotor permanent magnet (33) is made of neodymium iron boron.
4、 按权利要求 1所述的风轮直驱动永磁发电机， 其特征在于所述定子铁芯 (41)各嵌线槽中心线与定子固定轴（1) 中心线之间夹角 α为 3~4度。 4. The wind turbine direct drive permanent magnet generator according to claim 1, wherein an angle α between a center line of each of the stator cores (41) and a center line of the stator fixed shaft (1) is 3 to 4 degrees.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010120082A CN101764444A (en) | 2010-02-05 | 2010-02-05 | Wind wheel direct-driven permanent magnet generator |
| CN201010120082.5 | 2010-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011095006A1 true WO2011095006A1 (en) | 2011-08-11 |
Family
ID=42495471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2010/076895 WO2011095006A1 (en) | 2010-02-05 | 2010-09-14 | Permanent magnet generator directly driven by wind wheel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101764444A (en) |
| WO (1) | WO2011095006A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364843A (en) * | 2011-11-07 | 2012-02-29 | 李连山 | Ultrahigh-energy generator |
| CN108616201A (en) * | 2018-06-20 | 2018-10-02 | 苏州高腾智能装备有限公司 | Paste magnetic shoe mechanism |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764444A (en) * | 2010-02-05 | 2010-06-30 | 浙江风光机电科技有限公司 | Wind wheel direct-driven permanent magnet generator |
| CN104518605A (en) * | 2014-12-20 | 2015-04-15 | 西安上普动力科技有限公司 | Conveying belt damping belt wheel with regenerative brake power generation function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62178146A (en) * | 1986-01-29 | 1987-08-05 | Matsushita Electric Ind Co Ltd | Brushless generator |
| CN101064446A (en) * | 2006-04-27 | 2007-10-31 | 阳光技术发电机株式会社 | Method of displaying ambient temperature for vehicles |
| CN101106291A (en) * | 2007-07-25 | 2008-01-16 | 上海洛克磁业有限公司 | A structure for generator stator punching sheet |
| CN101764444A (en) * | 2010-02-05 | 2010-06-30 | 浙江风光机电科技有限公司 | Wind wheel direct-driven permanent magnet generator |
| CN201623606U (en) * | 2010-02-05 | 2010-11-03 | 浙江风光机电科技有限公司 | Wind wheel direct-driven permanent magnet generator |
-
2010
- 2010-02-05 CN CN201010120082A patent/CN101764444A/en active Pending
- 2010-09-14 WO PCT/CN2010/076895 patent/WO2011095006A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62178146A (en) * | 1986-01-29 | 1987-08-05 | Matsushita Electric Ind Co Ltd | Brushless generator |
| CN101064446A (en) * | 2006-04-27 | 2007-10-31 | 阳光技术发电机株式会社 | Method of displaying ambient temperature for vehicles |
| CN101106291A (en) * | 2007-07-25 | 2008-01-16 | 上海洛克磁业有限公司 | A structure for generator stator punching sheet |
| CN101764444A (en) * | 2010-02-05 | 2010-06-30 | 浙江风光机电科技有限公司 | Wind wheel direct-driven permanent magnet generator |
| CN201623606U (en) * | 2010-02-05 | 2010-11-03 | 浙江风光机电科技有限公司 | Wind wheel direct-driven permanent magnet generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364843A (en) * | 2011-11-07 | 2012-02-29 | 李连山 | Ultrahigh-energy generator |
| CN108616201A (en) * | 2018-06-20 | 2018-10-02 | 苏州高腾智能装备有限公司 | Paste magnetic shoe mechanism |
| CN108616201B (en) * | 2018-06-20 | 2023-12-26 | 苏州高腾智能装备有限公司 | Magnetic shoe pasting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101764444A (en) | 2010-06-30 |
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