CN201142632Y - Mixed field excitation transmission speed control device - Google Patents
Mixed field excitation transmission speed control device Download PDFInfo
- Publication number
- CN201142632Y CN201142632Y CNU2008200307594U CN200820030759U CN201142632Y CN 201142632 Y CN201142632 Y CN 201142632Y CN U2008200307594 U CNU2008200307594 U CN U2008200307594U CN 200820030759 U CN200820030759 U CN 200820030759U CN 201142632 Y CN201142632 Y CN 201142632Y
- Authority
- CN
- China
- Prior art keywords
- rotation body
- permanent
- determination
- utmost point
- active rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
A hybrid excitation transmission speed regulating device is a hybrid excitation eddy current transmission device which has great output power and large torque and can carry out the real-time regulation of the output power and the torque; an outer ring permanent magnetic pole (21), an inner ring permanent magnetic pole (22), an outer ring iron core pole (71) and an inner ring iron core pole (72) are stuck to the surface of an active rotation body (1) of the device; a DC excitation winding (8) is arranged in an annular magnetic pole groove (11) of the surface of the active rotation body (1); a passive rotation body (10) is composed of a copper disk (3) with a slot and a back yoke (4), and the slot (31) of the copper disk (3) is filled with filling materials (32) with high permeability. The active rotation body (1) is fixed at an input rotating shaft (5), the passive rotation body (10) is fixed at an output rotating shaft (6); a motor adopts the copper disk structure with the slot, thus improving the output power; the strength of an air gap magnetic field can be conveniently regulated by regulating the intensity and the direction of the current of the DC excitation winding (8), thus regulating the rotation speed, the output power and the output torque.
Description
Technical field
The utility model relates to a kind of mixing exciter panel type eddy flow drive speed regulating device, belongs to the technical field that motor is made.
Background technology
The application of permanent magnetism drive technology has the history of decades, one of its application is that the power of prime mover is passed to interior magnet assembly on the working shaft by the outer magnet assembly on it, inside and outside magnet assembly is separated by cage, thereby working shaft need not stretch out the space that will seal, cancelled movable sealing, realized not having sealing, zero leakage.Be mainly used in pump and compressor, mixer and valve etc. in chemical industry, petrochemical industry, medicine, the food industry.The traditional mechanical of a large amount of uses of China's fluid machinery at present are sealed in these external departments and are replaced by the permanent magnetism transmission gradually.
The Another Application of permanent magnetism drive technology is electric excitation vortex drive device, and electric excitation vortex drive device has used hysteresis material, is a big characteristic of this device.The difference of hysteresis material and permanent magnetic material is that the former changes polarity easily, so regulate torque easily, provides good operating characteristics, and it has obtained using widely at present.But its nominal torque is little, because when nominal torque, clutch begins to slide, and hysteresis material absorbs energy by system, because the variation of magnetic pole, kinetic energy becomes heat, and this part heat should scatter and disappear and cool off timely.The adjustment control of electricity excitation vortex drive device torque is provided by magnet exciting coil, needs DC power supply and control system, and it is best selection in automatic control system.Integrated some technical process that can be of magnetic means and transducer, microprocessor realizes automation.For example when the coil diameter of up-coiler constantly increases, change, thereby torque also correspondingly changes thereupon, to guarantee to obtain constant tension force by the control exciting current.This is to printing machine class-intaglio printing press, weaving loom class-cloth inspecting machine, and paper sheet handling machine class-trimmer, metal treatment machine class-coating machine, wire cutting machine, steel bar heat-treating machine, coiled material machine, packing machine class-Bag Making Machine etc. is very valuable.Therefore, it is the stretching of almost any material and the good selection of curly course control.
The permanent magnetism transmission does not have excitation consumption, but since it mechanically or servomechanism regulate size of gaps, therefore make and use inconvenient operation.And electric excitation transmission is easy to adjust, but electric exciting power consumption is bigger.In addition, the transmission of traditional electrical excitation is owing to adopt claw-pole structure, and its heat dispersion is relatively poor.
The mixing exciter panel type eddy flow drive speed regulating device technology of the utility model discussion combines the advantage of permanent magnetism, electric excitation eddy current drive technology, with the high power density of permanent magnetism transmission and adjustable the combining of magnetic field of electric excitation eddy current transmission, both advantages have been given full play to, overcome shortcoming separately, reduced electric excitation loss.By the interaction of high strength permanent-magnet pole, the adjustable magnet heart utmost point and copper dish, realize carrying out the transmission of moment of torsion by air gap between motor and the load; Keep independent operating between motor and the load mutually, do not have mechanical link.In addition, the present invention has adopted the magnetic pole tray type structure, and its heat dispersion is better than electric excitation transmission.It mainly is made up of two parts, and a part is made up of high strength permanent magnetism (neodymium iron boron) utmost point that is connected driving side and adjustable magnet heart utmost point rotor; On the copper rotor that another part is made up of the copper dish that is connected load-side.
The operation principle of the composite excitation drive technology of the utility model discussion is: copper rotor and pole wheel can freely independently rotate, when pole wheel rotates, copper rotor and magnet steel rotor produce relative motion, alternating magnetic field produces eddy current by air gap on copper rotor, eddy current produces induced field and magnetic pole resultant magnetic field (comprising permanent magnetic field and electricity excitation magnetic field) interaction simultaneously, thereby drive copper rotor along the direction rotation identical with p-m rotor, the result produces moment of torsion on the load-side output shaft, rotate thereby drive load.By regulating the size of current and the direction of DC excitation winding, that realizes air-gap field increases magnetic and weak magnetic, thereby the moment of torsion that control is transmitted obtaining controllable load speed, output torque and power output, thereby is realized the adjusting of load speed, output torque and power output.
Summary of the invention
Technical problem: technical problem to be solved in the utility model provides a kind of power output, torque is big, and can real-time regulated the composite excitation drive speed regulating device of power output, torque.
Technical scheme: for power output, the torque that improves motor, the present invention has adopted special electric machine structure, promptly on the copper dish of passive rotor, slot, adopt the packing material of high magnetic conduction to fill in the groove, this structure is bigger than dull and stereotyped copper dish (not slotting) structure power density, make that the transmitted power of transmission device is bigger, and when equal-wattage, this structure is littler than dull and stereotyped copper dish (not slotting) structural volume; In order to regulate power output, torque, the present invention has introduced staggered magnetic pole and DC excitation winding part, thereby realizes composite excitation, and staggered field structure makes electric machine structure more simple, magnet exciting coil length shorter than under the electric excitation transmission, therefore electric excitation loss is littler; In addition, owing to adopt the magnetic pole tray type structure, its heat dispersion is better than electric excitation transmission.Copper dish fluting also adopts the packing material of high magnetic conduction to fill to make air-gap flux pass high magnetic conduction substance and enters into passive rotor back of the body yoke, thereby produces eddy current in the copper dish.Make full use of the conductivity of copper and the magnetic conductivity of high magnetic conduction substance, made power output be improved.
For the appended synchronization torque that reduces transmission mechanism, additional asynchronous torque and single-phase vibration force, the fluting number on the passive rotor copper dish is followed nearly groove matching principle, satisfies Q simultaneously
1≠ Q
2Q
1≠ Q
2± p; Q
1-Q
2≠ (± 1); Q
1-Q
2≠ (± p ± 1).Q
1Be copper dish fluting number; Q
2Be permanent magnet number (being the sum of outer shroud permanent-magnet pole and interior ring permanent-magnet pole); P=Q
2/ 2 expression active rotation body numbers of poles.
Composite excitation drive speed regulating device of the present utility model comprises active rotation body, passive rotation body, outer shroud permanent-magnet pole, interior ring permanent-magnet pole, the outer shroud utmost point unshakable in one's determination, the interior ring utmost point unshakable in one's determination and DC excitation winding; The active rotation body of this mixing exciter panel type eddy flow drive speed regulating device has two of symmetry, its place, axle center is fixed in the input rotating shaft, the outer surface of active rotation body posts staggered outer shroud permanent-magnet pole, interior ring permanent-magnet pole, the outer shroud utmost point unshakable in one's determination and the interior ring utmost point unshakable in one's determination, and the DC excitation winding is installed in the annular magnetic pole groove of active rotation surface; The passive rotation body comprises copper dish, the back of the body yoke of fluting, and back of the body yoke is positioned at the outside of this device, adopts the packing material of high magnetic conduction to fill in the copper dish groove; The copper dish of fluting is positioned at the inboard of back of the body yoke, and the passive rotation body is fixed on the output revolving shaft.The permanent-magnet pole of active rotation surface is divided into two parts, and the permanent magnetism of the external circle of active rotation is the outer shroud permanent-magnet pole very, the very interior ring permanent-magnet pole of the permanent magnetism of active rotation body inner ring; The utmost point unshakable in one's determination of active rotation surface is divided into two parts, and the iron core of the external circle of active rotation is the outer shroud utmost point unshakable in one's determination very, the very interior ring of the iron core of the active rotation body inner ring utmost point unshakable in one's determination; The outer shroud permanent-magnet pole of active rotation surface and the polarity of interior ring permanent-magnet pole are different and be staggered; The outer shroud of the active rotation surface utmost point unshakable in one's determination and the interior ring utmost point unshakable in one's determination are staggered; Outer shroud permanent-magnet pole and the outer shroud utmost point unshakable in one's determination is staggered; The interior ring permanent-magnet pole and the interior ring utmost point unshakable in one's determination are staggered.The passive rotation body adopts the copper dish of fluting, and copper dish groove evenly distributes on the circumference of copper dish, and notch is filled by the packing material of high magnetic conduction in the copper dish groove towards the active rotation body.
Magnetic flux path is during no DC excitation electric current: outer shroud permanent-magnet pole, interior ring permanent-magnet pole, passive rotor copper dish groove, passive rotor back of the body yoke, adjacent copper dish groove, adjacent different interior ring permanent-magnet pole outer shroud permanent-magnet pole, the power rotor of polarity, get back to outer shroud permanent-magnet pole, interior ring permanent-magnet pole at last.
When feeding the forward dc exciting current in the DC excitation winding, exciting current rises air-gap field and increases magnetic action.At this moment, the outer shroud permanent-magnet pole on the same rotor pole is identical with the interior ring utmost point unshakable in one's determination, interior ring permanent-magnet pole and outer shroud utmost point polarity unshakable in one's determination.
When feeding reverse DC excitation electric current in the DC excitation winding, exciting current plays weak magnetic action to air-gap field.At this moment, the outer shroud permanent-magnet pole on the same rotor pole is opposite with the interior ring utmost point unshakable in one's determination, interior ring permanent-magnet pole and outer shroud utmost point polarity unshakable in one's determination.
Eddy current path: on the copper dish of fluting, enclose outside on the copper dish around notch and to form circulation.
Beneficial effect: the utility model is owing to introduced staggered magnetic pole (permanent-magnet pole and the utmost point unshakable in one's determination are staggered) structure, high strength permanent-magnet pole, the adjustable magnet heart utmost point and DC excitation winding, air-gap field can be able to effective adjusting, air gap flux density can be regulated to the wide region of twice permanent magnetism air gap flux density zero, thereby realize the free adjustment of rotating speed, power output, output torque, reduced electric excitation loss, the advantage that fully combines permanent magnetism transmission and electric excitation transmission has overcome shortcoming separately again.In addition, because passive rotor copper dish is slotted and adopt the packing material of high magnetic conduction to fill, can obtain the power output higher, torque, thereby improve the power density of device than permanent magnetic vortex drive device.
Description of drawings
Fig. 1 is the utility model composite excitation drive speed regulating device generalized section;
Fig. 2 is the utility model composite excitation drive speed regulating device active rotation surface magnetic pole (not placing excitation winding) distribution schematic diagram;
Fig. 3 is the utility model composite excitation drive speed regulating device active rotation surface magnetic pole (placement excitation winding) distribution schematic diagram;
Fig. 4 is the utility model composite excitation drive speed regulating device fluting copper dish (not placing packing material in the copper dish groove) schematic diagram;
Fig. 5 is the utility model composite excitation drive speed regulating device fluting copper dish (placing high magnetic conduction packing material in the copper dish groove) and eddy current schematic diagram.
Have among the above figure: power rotor 1, outer shroud permanent-magnet pole 21, interior ring permanent-magnet pole 22, copper dish 3, copper dish groove 31, packing material 32, back of the body yoke 4, input rotating shaft 5, output revolving shaft 6, the outer shroud utmost point 71 unshakable in one's determination, the interior ring utmost point 72 unshakable in one's determination, DC excitation winding 8, bearing 9, passive rotation body 10, annular magnetic pole groove 11.
Embodiment
Composite excitation drive speed regulating device of the present utility model comprises active rotation body 1, passive rotation body 10, outer shroud permanent-magnet pole 21, interior ring permanent-magnet pole 22, the outer shroud utmost point 71 unshakable in one's determination, the interior ring utmost point 72 unshakable in one's determination and DC excitation winding 8: the active rotation body 1 of this mixing exciter panel type eddy flow drive speed regulating device has two of symmetry, its place, axle center is fixed in the input rotating shaft 5, the outer surface of active rotation body 1 posts staggered outer shroud permanent-magnet pole 21, interior ring permanent-magnet pole 22, the outer shroud utmost point 71 unshakable in one's determination and the interior ring utmost point 72 unshakable in one's determination are installed DC excitation winding 8 in the annular magnetic pole groove 11 on active rotation body 1 surface; Passive rotation body 10 comprises copper dish 3, the back of the body yoke 4 of fluting, and back of the body yoke 4 is positioned at the outside of this device, adopts the packing material 32 of high magnetic conduction to fill in the copper dish groove 31; The copper dish 3 of fluting is positioned at the inboard of back of the body yoke 4, and passive rotation body 10 is fixed on the output revolving shaft 6.The permanent-magnet pole on active rotation body 1 surface is divided into two parts: the permanent magnetism of active rotation body 1 outer ring is outer shroud permanent-magnet pole 21 very, the very interior ring permanent-magnet pole 22 of the permanent magnetism of active rotation body 1 inner ring; The utmost point unshakable in one's determination on active rotation body 1 surface is divided into two parts: the iron core of active rotation body 1 outer ring is the outer shroud utmost point 71 unshakable in one's determination very, the very interior ring of the iron core of the active rotation body 1 inner ring utmost point 72 unshakable in one's determination; The outer shroud permanent-magnet pole 21 on active rotation body 1 surface and the polarity of interior ring permanent-magnet pole 22 are different and be staggered; The outer shroud on the active rotation body 1 surface utmost point 71 unshakable in one's determination is staggered with the interior ring utmost point 72 unshakable in one's determination; Outer shroud permanent-magnet pole 21 is staggered with the outer shroud utmost point 71 unshakable in one's determination; Interior ring permanent-magnet pole 22 is staggered with the interior ring utmost point 72 unshakable in one's determination.Passive rotation body 10 adopts the copper dish 3 of fluting, and copper dish groove 31 evenly distributes on the circumference of copper dish 3, and notch is filled by the packing material 32 of high magnetic conduction in the copper dish groove 31 towards active rotation body 1.
The utility model has adopted special mixing exciter panel type eddy flow drive speed regulating device structure, i.e. fluting and adopt the packing material 32 of high magnetic conduction to fill in the copper dish 3 of passive rotor.Power rotor 1 is fixed in the input rotating shaft 5; Different outer shroud permanent-magnet pole 21, interior ring permanent-magnet pole 22 and the outer shroud utmost point 71 unshakable in one's determination, the interior ring utmost point 72 unshakable in one's determination of polarity is staggered and sticks on the outer surface of power rotor 1; Passive rotation body 10 is made of copper dish 3 and back of the body yoke 4 and is fixed on the output revolving shaft 6; Packing material 32 all adopts high permeability material to make in the back of the body yoke 4 of the outer shroud utmost point 71 unshakable in one's determination, the interior ring utmost point 72 unshakable in one's determination, active rotation body 1, passive rotation body 10 and the copper dish groove 31, and input rotating shaft 5 and output revolving shaft 6 all adopt non-magnetic conductive steel.
In addition, consider, select to have the material of the Nd-Fe-Bo permanent magnet material of higher HCJ as the outer shroud permanent-magnet pole 21 and the interior ring permanent-magnet pole 22 of active rotation body 1 from improving motor gas-gap magnetic thermal stability close and magnet steel.
Copper dish fluting and the filling of employing high permeability material make air-gap flux pass high magnetic conduction substance and enter passive rotor back of the body yoke, thereby produce eddy current in the copper dish.Make full use of the conductivity of copper and the magnetic conductivity of high magnetic conduction substance, made power output be improved.
Claims (3)
1. composite excitation drive speed regulating device, comprise active rotation body (1), passive rotation body (10), outer shroud permanent-magnet pole (21), interior ring permanent-magnet pole (22), the outer shroud utmost point (71) unshakable in one's determination, the interior ring utmost point unshakable in one's determination (72) and DC excitation winding (8), it is characterized in that: the active rotation body (1) of this mixing exciter panel type eddy flow drive speed regulating device has two of symmetry, its place, axle center is fixed in the input rotating shaft (5), the outer surface of active rotation body (1) posts staggered outer shroud permanent-magnet pole (21), interior ring permanent-magnet pole (22), the outer shroud utmost point (71) unshakable in one's determination and the interior ring utmost point unshakable in one's determination (72) are installed DC excitation winding (8) in the annular magnetic pole groove (11) on active rotation body (1) surface; The passive rotation body comprises the copper dish (3) and the back of the body yoke (4) of fluting, and back of the body yoke (4) is positioned at the outside of this device, adopts the packing material (32) of high magnetic conduction to fill in the copper dish groove (31); The copper dish (3) of fluting is positioned at the inboard of back of the body yoke (4), and passive rotation body (10) is fixed on the output revolving shaft (6).
2. composite excitation drive speed regulating device according to claim 1, the permanent-magnet pole that it is characterized in that active rotation body (1) surface is divided into two parts, the permanent magnetism of active rotation body (1) outer ring is outer shroud permanent-magnet pole (21) very, the very interior ring permanent-magnet pole (22) of the permanent magnetism of active rotation body (1) inner ring; The utmost point unshakable in one's determination on active rotation body (1) surface is divided into two parts, and the iron core of active rotation body (1) outer ring is the outer shroud utmost point (71) unshakable in one's determination very, the very interior ring utmost point unshakable in one's determination (72) of the iron core of active rotation body (1) inner ring; The outer shroud permanent-magnet pole (21) on active rotation body (1) surface and the polarity of interior ring permanent-magnet pole (22) are different and be staggered; The outer shroud utmost point unshakable in one's determination (71) on active rotation body (1) surface is staggered with the interior ring utmost point unshakable in one's determination (72); Outer shroud permanent-magnet pole (21) is staggered with the outer shroud utmost point unshakable in one's determination (71); Interior ring permanent-magnet pole (22) is staggered with the interior ring utmost point unshakable in one's determination (72).
3. composite excitation drive speed regulating device according to claim 1, it is characterized in that passive rotation body (10) adopts the copper dish (3) of fluting, copper dish groove (31) evenly distributes on the circumference of copper dish (3), notch is filled by the packing material (32) of high magnetic conduction in the copper dish groove (31) towards active rotation body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200307594U CN201142632Y (en) | 2008-01-11 | 2008-01-11 | Mixed field excitation transmission speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200307594U CN201142632Y (en) | 2008-01-11 | 2008-01-11 | Mixed field excitation transmission speed control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142632Y true CN201142632Y (en) | 2008-10-29 |
Family
ID=40070341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200307594U Expired - Lifetime CN201142632Y (en) | 2008-01-11 | 2008-01-11 | Mixed field excitation transmission speed control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201142632Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860281A (en) * | 2010-05-19 | 2010-10-13 | 鞍山钦元节能设备制造有限公司 | Electromagnetic speed-adjusting driving system |
| CN102136788A (en) * | 2010-01-27 | 2011-07-27 | 财团法人工业技术研究院 | Speed changing device |
| CN102223130A (en) * | 2010-04-16 | 2011-10-19 | 东北大学 | Electromagnetic speed-regulation driving system |
| CN103427574A (en) * | 2013-08-26 | 2013-12-04 | 东南大学 | Axial permanent magnet asynchronous wind driven generator |
| CN104562396A (en) * | 2014-12-24 | 2015-04-29 | 苏州华冲精密机械有限公司 | Planetary body for textile machine |
| CN104753312A (en) * | 2014-12-18 | 2015-07-01 | 东北大学 | Slotting permanent magnet speed regulator stuffed with steel blocks and preparation method for slotting permanent magnet speed regulator |
| CN105090277A (en) * | 2014-05-21 | 2015-11-25 | 白万本 | Magnetic force locking device |
| CN109687675A (en) * | 2018-12-21 | 2019-04-26 | 苏州达思灵新能源科技有限公司 | A kind of axial arrangement double salient-pole electric machine |
| CN113852228A (en) * | 2021-10-13 | 2021-12-28 | 重庆希弗节能技术有限公司 | Excitation controllable motor |
-
2008
- 2008-01-11 CN CNU2008200307594U patent/CN201142632Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136788A (en) * | 2010-01-27 | 2011-07-27 | 财团法人工业技术研究院 | Speed changing device |
| CN102136788B (en) * | 2010-01-27 | 2013-04-10 | 财团法人工业技术研究院 | Speed changing device |
| CN102223130A (en) * | 2010-04-16 | 2011-10-19 | 东北大学 | Electromagnetic speed-regulation driving system |
| CN101860281A (en) * | 2010-05-19 | 2010-10-13 | 鞍山钦元节能设备制造有限公司 | Electromagnetic speed-adjusting driving system |
| CN103427574A (en) * | 2013-08-26 | 2013-12-04 | 东南大学 | Axial permanent magnet asynchronous wind driven generator |
| CN103427574B (en) * | 2013-08-26 | 2016-02-10 | 东南大学 | A kind of axial permanent magnetic asynchronous wind driven generator |
| CN105090277A (en) * | 2014-05-21 | 2015-11-25 | 白万本 | Magnetic force locking device |
| CN104753312A (en) * | 2014-12-18 | 2015-07-01 | 东北大学 | Slotting permanent magnet speed regulator stuffed with steel blocks and preparation method for slotting permanent magnet speed regulator |
| CN104562396A (en) * | 2014-12-24 | 2015-04-29 | 苏州华冲精密机械有限公司 | Planetary body for textile machine |
| CN109687675A (en) * | 2018-12-21 | 2019-04-26 | 苏州达思灵新能源科技有限公司 | A kind of axial arrangement double salient-pole electric machine |
| CN113852228A (en) * | 2021-10-13 | 2021-12-28 | 重庆希弗节能技术有限公司 | Excitation controllable motor |
| CN113852228B (en) * | 2021-10-13 | 2023-06-20 | 重庆希弗节能技术有限公司 | Excitation controllable motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100544170C (en) | Mixing exciter panel type eddy flow drive speed regulating device | |
| CN201142632Y (en) | Mixed field excitation transmission speed control device | |
| CN100541990C (en) | Permanent magnetic vortex drive device | |
| CN105915021B (en) | A kind of brushless type composite excitation permanent magnet eddy speed regulating device | |
| CN107248804B (en) | Disc-type permanent magnet coupling mechanism and device using same | |
| CN109194082B (en) | Amorphous alloy axial flux motor with wide field weakening speed expansion and low rotor loss | |
| CN101291095B (en) | Hybrid switch reluctance motor | |
| CN111884460B (en) | Axial magnetic flux hybrid excitation memory motor | |
| CN207251431U (en) | Desk permanent-magnet coupling mechanism, desk permanent-magnet coupled speed regulator, magnetic coupling arrangements for speed regulation, brushless double feed coupling transmission device | |
| CN102412700B (en) | Low-speed high-thrust-density linear motor | |
| CN102315739B (en) | Hybrid excitation generator | |
| US20170104388A1 (en) | Method and apparatus for compact axial flux magnetically geared machines | |
| CN105429407A (en) | Magnetic gear motor with continuously adjustable speed ratio | |
| CN106936290A (en) | A kind of permanent-magnet coupler for improving conductor disc | |
| CN108964387B (en) | The double-deck standard squirrel cage conductor rotor high torque density permanent-magnet speed governor | |
| CN101242130B (en) | Asynchronous startup and permanent magnetic synchronization transmission coupler | |
| CN202172355U (en) | Combined type electromagnetic speed regulation system | |
| CN104682621A (en) | Axial magnetic field slip synchronization-type double-direct wind power generator | |
| CN107681868B (en) | Efficient high starting torque desk permanent-magnet eddy-current coupling | |
| CN201118426Y (en) | Permanent vortex transmission device | |
| CN202405976U (en) | Permanent-magnet direct-drive vernier motor | |
| CN110299815A (en) | A kind of coaxial birotor speed change electromagnetic actuator | |
| CN202444390U (en) | Disc type low-speed large-torque permanent magnetism vernier motor | |
| CN110115104B (en) | Rotary induction heater with DC excitation device | |
| CN110492710B (en) | Double-rotor generator and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080111 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |