CN101931297A - Disk-type magneto generator of statorless iron core - Google Patents
Disk-type magneto generator of statorless iron core Download PDFInfo
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- CN101931297A CN101931297A CN2009101425455A CN200910142545A CN101931297A CN 101931297 A CN101931297 A CN 101931297A CN 2009101425455 A CN2009101425455 A CN 2009101425455A CN 200910142545 A CN200910142545 A CN 200910142545A CN 101931297 A CN101931297 A CN 101931297A
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Abstract
The invention discloses a disk-type magneto generator of a statorless iron core, which is suitable for wind driven generators or small hydroelectricity industry. The generator is composed of a rotor part and a stator part, wherein the rotor part is mainly composed of a case, upper permanent magnet steel, lower permanent magnet steel, a magnet steel fixing cover and an end cover; the stator part is mainly composed of a motor shaft, a bearing, a stator coil and a coil skeleton which is fixed on the motor shaft; the stator coil is embedded in the coil skeleton to omit the stator iron core with favourable conduction performance in the existing magneto generator; thus, when a generator field rotates, the stator part does not generate induced current and does not generate reluctance torque in the generator; expect mechanical friction torque, no starting reluctance torque exists in the generator, thus the invention is favourable for realizing gentle breeze power generation or small-flow power generation, does not generate iron loss in the generator, does not generate eddy current calorification, improves the generator efficiency, improves the service life, simplifies the structure, lowers the manufacturing cost, lowers the weight and is favourable for installing, storing, conveying and maintaining the generator.
Description
Affiliated technical field
The present invention relates to a kind of generator, particularly a kind of desk permanent-magnet generator that does not have stator core, this generator is particularly suitable for wind power generation and small water conservancy power field.
Background technology
In existing wind-force and small water conservancy power field, generator has two kinds, and the one, electric excitation generator, another kind are the permanent magnet generatores that newly-developed gets up.In electric excitation generator, be provided with magnet exciting coil in the generator, when generator operation, add exciting current by the outside to magnet exciting coil and produce generator main magnetic field, make generator for electricity generation, what use in the market mostly is this electric excitation generator.This generator has increased the structure and the complexity of system because of being provided with magnet exciting coil, has reduced generating efficiency, and the cost of electricity-generating height is replaced by permanent magnet generator gradually.
Existing permanent magnet generator is equipped with permanent-magnet steel in rotor, form generator main magnetic field, does not need to add the electric power excitation, has simplified electric generator structure, has improved generating efficiency, is the developing direction of wind-driven generator.But in permanent magnet generator, because the permanent magnet magnetic performance is very strong, when generator field rotates with respect to stator core, to in electricity generator stator core, produce the eddy current of inducting, this eddy current flows in stator core and produces reluctance torque, this torque and rotor permanent magnetism main field interact, in rotor, produce unloaded resistive torque, running brings brake torque to generator starting, particularly when generator just begins to start, generator does not also have the connection load, there is not the generating electromagnetic torque in generator, the torque of generator existence at this moment has only reluctance torque and mechanical friction torque, and reluctance torque accounts for the large percentage of permanent magnet generator starting torque, accounts for more than 90% of total starting torque, therefore to compare starting torque bigger for permanent magnet generator and electric excitation generator, make permanent magnet generator when low wind speed or weep, be difficult to starting, influenced the utilization of wind energy or water energy, influenced promoting the use of of permanent magnet generator.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of desk permanent-magnet generator (abbreviation generator) that does not have stator core is provided, there is not reluctance torque in this generator, helps the low speed starting of generator.
Technical solution of the present invention is: the desk permanent-magnet generator of no stator core, its characteristics are: generator is made up of rotor portion and stationary part, rotor portion is made up of parts such as casing, permanent-magnet steel, magnetic steel sleeve, end caps, and stationary part mainly is made up of parts such as coil rack, stator coil, motor shaft, bearings.Stator coil embeds in coil rack, saved the good stator core of electric conductivity in the existing generator, coil rack has the very big material of resistivity to make, stop faradic flowing, thereby when generator rotates, can not produce reluctance torque, when the generator starting under no load, only there is friction torque, starting torque is very little, makes generator be easy to low wind speed or weep starting operation.
Principle of the present invention is: permanent-magnet steel is by two-layer composition up and down, on same axis direction, the N utmost point magnet steel of levels and S utmost point magnet steel are staggered, its magnetic line of force route is: the magnetic line of force that upper strata N utmost point permanent-magnet steel sends from the N utmost point, one side air gap of process N utmost point permanent-magnet steel and stator coil is to stator coil, pass through the air gap of this stator coil and S utmost point permanent-magnet steel again, arrive pairing S utmost point permanent-magnet steel, that passes this S utmost point permanent-magnet steel then holds the N utmost point in addition, through end cap, casing arrives the S utmost point that the N utmost point permanent-magnet steel of the magnetic line of force is sent on the upper strata, form closed loop, constitute the main field of generator simultaneously; In like manner, the magnetic line of force that the N of lower floor utmost point permanent-magnet steel sends from the N utmost point, one side air gap of process N utmost point permanent-magnet steel and stator coil is to stator coil, pass through the air gap of this stator coil and S utmost point permanent-magnet steel again, arrive pairing S utmost point permanent-magnet steel, that passes this S utmost point permanent-magnet steel then holds the N utmost point in addition, arrives the S utmost point that lower floor sends the N utmost point permanent-magnet steel of the magnetic line of force through casing, end cap, form closed loop, also constitute the main field of generator simultaneously.
In upper strata permanent-magnet steel or lower floor's permanent-magnet steel, N utmost point magnet steel and S utmost point magnet steel are staggered equally, in the whole stator winding of generator, along the circumferential direction form the extremely staggered magnetic field of the N utmost point and S, when this magnetic field rotated under wind turbine or the hydraulic turbine drive, the inswept stator coil in this magnetic field formed the alternating magnetic field of N, S polarity in stator coil, and in stator coil, produce the alternation induced potential, form the generating electromotive force, convert the mechanical energy of the wind turbine or the hydraulic turbine to electric energy, reach the generating purpose.
The present invention's advantage compared with prior art is: generator is not because of existing stator core, can be in the inner reluctance torque that produces of generator, thereby during generator starting except that the mechanical friction torque, do not have the generator reluctance torque, help the gentle breeze or the weep starting-generating of generator.Because of there is not stator core in generator, can not produce iron loss during generator operation, thereby generator unit stator part can not produce eddy-current heating in inside, the efficient height of generator own has improved the generator life-span.Because of there is not stator core in generator, simplify electric generator structure, reduced the generator manufacturing cost, alleviated generator weight, help installation, accumulating, the maintenance of generator.This generator can be made inner rotor core or outer-rotor structure, be particularly suitable for making outer-rotor structure, casing can be designed to and fan blade or the easy-to-install form of the hydraulic turbine, can further simplify the overall structure of generating complete set of equipments, further reduces system cost.
Description of drawings
Fig. 1 is the desk permanent-magnet electric generator structure schematic diagram of no stator core of the present invention.
Fig. 2 is permanent-magnet steel and following permanent-magnet steel N, a S polarity arrangement schematic diagram vertically on the desk permanent-magnet generator of no stator core of the present invention.
Fig. 3 is permanent-magnet steel or along the circumferential direction N, a S polarity arrangement schematic diagram of permanent-magnet steel down on the desk permanent-magnet generator of no stator core of the present invention.
Embodiment
As shown in Figure 1, the desk permanent-magnet generator of no stator core is made up of rotor portion and stationary part, rotor portion mainly is made up of casing 1, last permanent-magnet steel 2, following permanent-magnet steel 3, magnet steel fixed cover 4, end cap 5, and stationary part mainly is made up of motor shaft 6, bearing 7, stator coil 8, coil rack 9.Last permanent-magnet steel 2, magnet steel fixed cover 4 are installed on the casing 1, and following permanent-magnet steel 2, magnet steel fixed cover 4 are installed on the end cap 5, and casing 1 tightens together with end cap 5 usefulness screws, and becoming can integrally rotated integral body.Bearing 7 is installed on the motor shaft 6, and its outer ring is connected with end cap 5 with casing 1, supports the generator amature part.Coil rack 9 is fixed on the motor shaft 6, and stator coil 8 embeds in coil rack 9, and stator coil 8, coil rack 9 are as a whole with 6 one-tenth of motor shafts.Motor shaft 6 is fixed together with the generating pylon, and generator is played the support fixation effect as the installing component of generator.When fan blade or water wheels rotation, drive the generator amature rotation simultaneously, generator unit stator partly remains static, the generator field that last permanent-magnet steel 2 and following permanent-magnet steel 3 form is with respect to stator coil 8 motions, in stator coil 8, produce induced potential, when generator is connected with the external power grid circuit, send electric energy, with wind energy or water can mechanical energy be converted into electric energy.
As shown in Figure 1, the axial dimension of the last permanent-magnet steel 2 of the desk permanent-magnet generator of no stator core, following permanent-magnet steel 3, stator coil 8 and casing 1, end cap 5 is shorter, and radial dimension is bigger, and generator is fit to make tray type structure.
As shown in Figure 2, the desk permanent-magnet generator of no stator core, on same axial direction, the magnet steel alternating polarity in the two-layer up and down permanent-magnet steel is arranged, and forms and passes the stator coil main field.
As shown in Figure 3, the desk permanent-magnet generator of no stator core, in a circumferential direction, the N utmost point magnet steel of every layer of permanent-magnet steel and S utmost point magnet steel are alternately arranged, and form the alternately alternating magnetic field of N, S polarity of the magnetic field when magnet steel rotates in stator coil.
For increasing generator power, the present invention can be with in Fig. 1 schematic diagram, part except that casing 1, end cap 5, motor shaft 6 and bearing 7 is as the generator unit body, can be together by a plurality of generator unit body stacks more than 2 or 2, stationary part is installed on the same motor shaft, rotating part is installed in the same casing, and the stator coil of each unit generating body is connected in series or parallel, and forms the desk permanent-magnet generator of the bigger no stator core of power.
In order to simplify the structure of total system, give full play to the characteristics of the desk permanent-magnet generator of no stator core, the casing 1 of generator can be processed into multiple version, can be processed into and fan blade or the direct-connected structure of the hydraulic turbine, the impeller of blower or the hydraulic turbine directly are fixed on the motor housing 1, save the transition link, simplied system structure reduces system cost.
Claims (7)
1. the desk permanent-magnet generator that does not have stator core, it is characterized in that: the desk permanent-magnet generator of no stator core is made up of rotor portion and stationary part, rotor portion is mainly by casing (1), last permanent-magnet steel (2), following permanent-magnet steel (3), magnet steel fixed cover (4), end cap (5) is formed, stationary part is mainly by motor shaft (6), bearing (7), stator coil (8), coil rack (9) is formed, last permanent-magnet steel (2), magnet steel fixed cover (4) is installed on the casing (1), following permanent-magnet steel (2), magnet steel fixed cover (4) is installed on the end cap (5), casing (1) tightens together with screw with end cap (5), becoming can integrally rotated integral body, bearing (7) is installed on the motor shaft (6), its outer ring is connected with end cap (5) with casing (1), support the generator amature partial rotation, coil rack (9) is fixed on the motor shaft (6), stator coil (8) embeds in coil rack (9), stator coil (8), coil rack (9) becomes as a whole with motor shaft (6), motor shaft (6) is as the installing component of generator, be fixed together with the generating pylon, and generator is played the support fixation effect.
2. the desk permanent-magnet generator of no stator core according to claim 1 is characterized in that: go up permanent-magnet steel (2) and following permanent-magnet steel (3) vertically the arranged mode be that on same axial direction, N utmost point magnet steel and S utmost point magnet steel replace arrangement.
3. the desk permanent-magnet generator of no stator core according to claim 1 is characterized in that: permanent-magnet steel arrangement along the circumferential direction is that in every layer of permanent-magnet steel, N utmost point magnet steel and S utmost point magnet steel are alternately arranged.
4. the desk permanent-magnet generator of no stator core according to claim 1, it is characterized in that: the axial dimension of the last permanent-magnet steel 2 of the desk permanent-magnet generator of no stator core, following permanent-magnet steel 3, stator coil 8 and casing 1, end cap 5 is shorter, radial dimension is bigger, and generator is fit to make tray type structure.
5. the desk permanent-magnet generator of no stator core according to claim 1, it is characterized in that: coil rack (9) is made by the very big material of resistivity, stator coil (8) embeds in coil rack (9), has saved the good stator core of electric conductivity in the existing permanent magnet generator.
6. the desk permanent-magnet generator of no stator core according to claim 1, it is characterized in that: the desk permanent-magnet generator of no stator core can be made up of a plurality of generator unit bodies more than 2 or 2, stationary part is installed on the same motor shaft, rotating part is installed in the same casing, the stator coil of each unit generating body is connected in series or parallel, forms the desk permanent-magnet generator of the bigger no stator core of power.
7. the desk permanent-magnet generator of no stator core according to claim 1, it is characterized in that: casing (1) can be processed into and fan blade or the direct-connected version of the hydraulic turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101425455A CN101931297A (en) | 2009-06-27 | 2009-06-27 | Disk-type magneto generator of statorless iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101425455A CN101931297A (en) | 2009-06-27 | 2009-06-27 | Disk-type magneto generator of statorless iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101931297A true CN101931297A (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101425455A Pending CN101931297A (en) | 2009-06-27 | 2009-06-27 | Disk-type magneto generator of statorless iron core |
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| CN (1) | CN101931297A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005832A (en) * | 2010-10-15 | 2011-04-06 | 深圳市科瑞悦电气设备有限公司 | Wind power generating device |
| CN102364844A (en) * | 2011-10-27 | 2012-02-29 | 华瑞科学仪器(上海)有限公司 | Assembled magnetic disk type generator |
| CN103138516A (en) * | 2011-11-22 | 2013-06-05 | 陈启川 | High-effect silicon-free steel sheet generator |
| CN103427722A (en) * | 2012-05-14 | 2013-12-04 | 罗才德 | Magnetic levitation disc-shaped power generator |
| CN104638869A (en) * | 2015-01-30 | 2015-05-20 | 上海泉源机电有限公司 | Coreless induction generator and hydroelectric generating instant faucet |
| CN107947528A (en) * | 2015-01-26 | 2018-04-20 | 项富宏 | Body-building generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477745A (en) * | 1983-12-15 | 1984-10-16 | Lux Gregory F | Disc rotor permanent magnet generator |
| CN2850109Y (en) * | 2005-11-11 | 2006-12-20 | 沈阳工业大学 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
| CN1905331A (en) * | 2006-08-04 | 2007-01-31 | 林修鹏 | Disk type wind-mill generator |
| CN201118413Y (en) * | 2007-10-29 | 2008-09-17 | 深圳航天科技创新研究院 | Disk three-phase brushless permanent magnetic DC electromotor |
-
2009
- 2009-06-27 CN CN2009101425455A patent/CN101931297A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477745A (en) * | 1983-12-15 | 1984-10-16 | Lux Gregory F | Disc rotor permanent magnet generator |
| CN2850109Y (en) * | 2005-11-11 | 2006-12-20 | 沈阳工业大学 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
| CN1905331A (en) * | 2006-08-04 | 2007-01-31 | 林修鹏 | Disk type wind-mill generator |
| CN201118413Y (en) * | 2007-10-29 | 2008-09-17 | 深圳航天科技创新研究院 | Disk three-phase brushless permanent magnetic DC electromotor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005832A (en) * | 2010-10-15 | 2011-04-06 | 深圳市科瑞悦电气设备有限公司 | Wind power generating device |
| CN102005832B (en) * | 2010-10-15 | 2014-04-23 | 深圳市科瑞悦电气设备有限公司 | Wind power generating device |
| CN102364844A (en) * | 2011-10-27 | 2012-02-29 | 华瑞科学仪器(上海)有限公司 | Assembled magnetic disk type generator |
| CN102364844B (en) * | 2011-10-27 | 2013-08-28 | 华瑞科学仪器(上海)有限公司 | Assembled magnetic disk type generator |
| CN103138516A (en) * | 2011-11-22 | 2013-06-05 | 陈启川 | High-effect silicon-free steel sheet generator |
| CN103427722A (en) * | 2012-05-14 | 2013-12-04 | 罗才德 | Magnetic levitation disc-shaped power generator |
| CN107947528A (en) * | 2015-01-26 | 2018-04-20 | 项富宏 | Body-building generator |
| CN104638869A (en) * | 2015-01-30 | 2015-05-20 | 上海泉源机电有限公司 | Coreless induction generator and hydroelectric generating instant faucet |
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Application publication date: 20101229 |