CN108011491A - A kind of permanent-magnet speed governor of fixed magnetic gap - Google Patents
A kind of permanent-magnet speed governor of fixed magnetic gap Download PDFInfo
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- CN108011491A CN108011491A CN201711055452.XA CN201711055452A CN108011491A CN 108011491 A CN108011491 A CN 108011491A CN 201711055452 A CN201711055452 A CN 201711055452A CN 108011491 A CN108011491 A CN 108011491A
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- 238000004804 winding Methods 0.000 claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000005669 field effect Effects 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000033228 biological regulation Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P15/00—Arrangements for controlling dynamo-electric brakes or clutches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of permanent-magnet speed governor of fixed magnetic gap, including with inputting the armature rotor, the outer magnetic stator positioned at armature rotor periphery and the interior magnet rotor positioned at armature rotor inside circumference with exporting axis connection of axis connection；The armature rotor includes iron core, along the circumferentially distributed winding coil B of iron core inner peripheral surface and along the circumferentially distributed winding coil A of iron core outer circumference surface；Interior magnet rotor has permanent magnet B along its outer circumference surface is circumferentially distributed；Outer magnetic stator is included positioned at the fixed seat of armature rotor periphery and along the circumferentially distributed permanent magnet A of fixed seat inner peripheral surface；The control system for electric energy conversion is connected between the winding coil B and winding coil A.The present invention is as a result of slip energy rectified feedback technology, quick boosting or braking are realized by winding coil A, make fixed magnetic gap governor speed governing rapid reaction, flexible, stabilization, by slip energy rectified feedback booster action, it is achieved thereby that the maximization of speed efficiency.
Description
Technical field
The present invention relates to a kind of governor, and in particular to a kind of permanent-magnet speed governor of fixed magnetic gap.
Background technology
Permanent-magnet speed governor is the magnetic couple speed governing by permanent magnet, realizes soft (magnetic) connection of motor and load, nothing
Any harmonic wave for influencing power grid produces, and reliability is high, and can high temperature, low temperature, humidity, dirt, inflammable and explosive, voltage instability and
Work under the various adverse circumstances such as thunder and lightning, significantly mitigate mechanical oscillation, be widely used in electric power, steel, metallurgy, petrochemical industry, papermaking,
The industries such as municipal administration, naval vessel, irrigation and mining.And currently used permanent-magnet speed governor is to realize rotating speed tune by adjusting air gap
Whole, the power consumption of magnetic circuit adjuster is big, and there are torque-transfer capability is poor, assembly difficulty is high, wastes a large amount of rare earth resources
The shortcomings of.To solve the above problems, patent CN2015108084423 proposes a kind of permanent-magnet speed governor of fixed magnetic gap, from holding
The permanent-magnet speed governor for design that magnetic gap is constant, the quantity of the change magnetic line of force is started with, passes through the magnetic for controlling p-m rotor externally to show
Property size so that achieve the purpose that change torque.But synchronization can not be realized there are slippage, and slippage produces between input, output
Heat be consumed, torque transfer capability is relatively low.
The content of the invention
It can reduce magnetic circuit adjuster power consumption in view of the above-mentioned problems, the present invention provides one kind, improve torque-transfer capability
Fixation magnetic gap permanent-magnet speed governor.
Current permanent-magnet speed governor is all so as to control conductor by varying the air gap between conductor rotor and p-m rotor
Rotor cutting magnetic line number, to realize torque adjustment, since this mode is there are many drawbacks, the present invention to be based on electromagnetism
Principle, the slip energy for inputting, being produced between output is reused, so as to improve the transmission capacity of torque.
To solve the above problems, the technical solution that the present invention takes is：A kind of permanent-magnet speed governor of fixed magnetic gap, including with
Input the armature rotor of axis connection, the outer magnetic stator positioned at armature rotor periphery and be located at armature with output axis connection
Interior magnet rotor on the inside of rotor circumference；The armature rotor includes iron core, along the circumferentially distributed winding wire of iron core inner peripheral surface
Enclose B and along the circumferentially distributed winding coil A of iron core outer circumference surface；The interior magnet rotor has along its outer circumference surface is circumferentially distributed
Permanent magnet B；The outer magnetic stator includes positioned at the fixed seat of armature rotor periphery and circumferential along fixed seat inner peripheral surface
The permanent magnet A of distribution；The control system for electric energy conversion is connected between the winding coil B and winding coil A.
Armature rotor is cylindrical, its bottom connection input shaft, the inside and outside side of its side wall is circumferentially distributed respectively winding
Coil B, winding coil A；Armature rotor top end opening is for interior magnet rotor insertion armature rotor inner side.
Governor principle：Relative motion is produced when armature rotor rotates with interior magnet rotor, winding coil B cutting magnetic fields produce
Electric current, while electric current produces induced field and permanent magnetism field interactions again, magnet rotor edge is identical with armature rotor in final drive
Direction rotate, so as to drive the output shaft being connected on interior magnet rotor to rotate and export power.Winding coil B is through control system
Winding coil A is connected to, the electric current that winding coil B is produced is passed through electric current through control system to the winding coil A on armature rotor,
According to electromagnetic induction principle, electromagnetic force is produced in the permanent magnet A magnetic fields in fixed seat, the direction of electromagnetic force depends on winding wire
Enclose A and apply sense of current；When the direction of electromagnetic force and the identical direction of input shaft, boosting power i.e. driving force is shown as, this
When input shaft input power be approximately equal to the output power of output shaft and (ignore the damage of armature resistance, control system and rotation system
Consumption)；Otherwise it is brake force, the input power of input shaft is more than the output power of output shaft.
The control system includes being connected on the rectification module at coil windings B both ends, to be connected on rectification module output terminal positive and negative
Adjusting control circuit and three-phase inverter bridge circuit between pole；Three-phase inverter bridge circuit output end wiring circle winding A；Institute
The three-phase inverter bridge circuit stated includes six field-effect tube；The adjusting control circuit includes three Hall elements and a control
Coremaking piece；Power end, the ground terminal of three Hall elements are respectively connected to rectification module output head anode, anode, three Hall members
The output terminal of part is connected to control chip input terminal, and control chip power supply terminates rectification module output head anode, control chip
Output terminal is connected on the grid of six field-effect tube respectively, and the control terminal of control chip draws drive control line and control for brake respectively
Line, control chip are further connected with speed adjusting resistance.Control principle of the system based on typical brushless motor, rectification module are used for whole
Flow and prevent electric current reversely charging.
Utilize the speed regulation process of above-mentioned control system：Adjust speed adjusting resistance, when speed adjusting resistance is in 0 position of speed governing, winding
Driving current is 0 in coil B, is reacted to commutating circuit output current and is approximately equal to 0, is similarly reacted in winding coil A circuits electric
Stream output is approximately equal to 0, and input speed is rated speed at this time, output speed 0；When speed adjusting resistance expires journey position in speed governing,
Driving current is maximum in winding coil B, is reacted to commutating circuit output current maximum, is similarly reacted to winding coil A circuits
Middle electric current output is maximum, and input power is approximately equal to output power at this time, and input speed is approximately equal to output speed；Accelerate and run
When, just push away (driving) work；Braking operation when slowing down and shutting down.The process for adjusting speed adjusting resistance is the speed governing of governor
Journey.
The control system includes the circuit being made of coil windings B, controllable conduction component, rectification module；Coil around
Group B both ends are parallel with speed adjusting resistance, and adjusting control circuit and three-phase bridge type inverse are connected between rectification module output positive and negative charge
Circuit；Three-phase inverter bridge circuit output end wiring circle winding A；The three-phase inverter bridge circuit includes six field-effects
Pipe；The adjusting control circuit includes three Hall elements and a control chip；Power end, the ground terminal of three Hall elements
Rectification module output head anode, anode are respectively connected to, the output terminal of three Hall elements is connected to control chip input terminal, control
Chip power terminates rectification module output head anode, and the output terminal of control chip is connected on the grid of six field-effect tube respectively, controls
The control terminal of coremaking piece draws drive control line and brake control lines respectively.Control of the system based on typical brushless motor
Principle, rectification module are used for rectification and prevent electric current reversely charging.
Utilize the speed regulation process of above-mentioned control system：Speed adjusting resistance is adjusted, it is controllable when speed adjusting resistance is in 0 position of speed governing
Conductive member is not turned on, and electric current is 0 in winding coil B, and it is 0 to be reacted to commutating circuit output current, electricity in winding coil A circuits
Flow for 0, input speed is rated speed at this time, output speed 0；When speed adjusting resistance expires journey position in speed governing, controllable conduction
Component turns on entirely, and electric current is maximum in winding coil B, is reacted to commutating circuit output current as maximum, electricity in winding coil A circuits
Flow for maximum, input power is approximately equal to output power at this time, and input speed is approximately equal to output speed；When accelerating and running, just push away
(driving) works；Braking operation when slowing down and shutting down.The process for adjusting speed adjusting resistance is the speed regulation process of governor.It is preferred that
, the control chip uses integrated chip MCC33035 or DSPIC30F2010 or IR2136.
Preferably, the controllable conduction component uses silicon-controlled or metal-oxide-semiconductor.
Input shaft, the position of output shaft can exchange.Armature rotor can connect output shaft i.e. in the application, and interior magnet rotor connects
Connect input shaft.
The present invention as a result of slip energy rectified feedback technology, can be realized by winding coil A quick boosting or
Braking, so that the fixation magnetic gap governor speed governing rapid reaction, flexible, stabilization, pass through slip energy rectified feedback boosting and make
With it is achieved thereby that the maximization of speed efficiency, drastically increases energy-saving efficiency and energy-saving effect and service life is complete
Surmount frequency converter, belong to energy-efficient product, can be that user saves the great number of driving energy.
Brief description of the drawings
Fig. 1 is cross-sectional view of the present invention；
Fig. 2 is the A-A schematic cross-sectional views of Fig. 1；
Fig. 3 is one control system schematic diagram of embodiment；
Fig. 4 is two control system schematic diagram of embodiment；
Wherein：1. fixed seat, 2. permanent magnet A, 3. input shafts, 4. winding coil A, 5. iron cores, 6. winding coil B, 7. is defeated
Shaft, 8. permanent magnet B, 9. control systems.
U1-U3 Hall elements, U4 control chips, VT1-VT6 field-effect tube, UO2 controllable conduction components, R1 speed adjusting resistances.
Embodiment
Embodiment one
A kind of permanent-magnet speed governor of fixed magnetic gap, including be connected with input shaft 3 armature rotor, positioned at armature rotor circumference
The outer magnetic stator in outside and the interior magnet rotor positioned at armature rotor inside circumference being connected with output shaft 7；The armature turns
Attached bag includes iron core 5, along the circumferentially distributed winding coil B 6 of 5 inner peripheral surface of iron core and circumferentially distributed along 5 outer circumference surface of iron core
Winding coil A 4；The interior magnet rotor has permanent magnet B 8 along its outer circumference surface is circumferentially distributed；The outer magnetic stator includes
Positioned at the fixed seat 1 of armature rotor periphery and along the circumferentially distributed permanent magnet A 2 of 1 inner peripheral surface of fixed seat；It is described around
The control system 9 for electric energy conversion is connected between group coil B 6 and winding coil A4.
The control system 9 includes being connected on the rectification module at 6 both ends of coil windings B, is connected on rectification module and exports and rectify
Adjusting control circuit and three-phase inverter bridge circuit between anode；Three-phase inverter bridge circuit output end wiring circle winding A
4；The three-phase inverter bridge circuit includes six field-effect tube VT1-VT6；The adjusting control circuit includes three suddenly
You are an element U1-U3 and control chip U4；The power end of three Hall element U1-U3, that ground terminal is respectively connected to rectification module is defeated
Outlet cathode, anode, the output terminal of three Hall element U1-U3 are connected to control chip U4 input terminals, control chip U4 power supplys
Rectification module output head anode is terminated, the output terminal of control chip U4 is connected on the grid of six field-effect tube VT1-VT6 respectively, controls
The control terminal of coremaking piece U4 draws drive control line and brake control lines respectively, and control chip U4 is further connected with speed adjusting resistance R1.
Preferably, the control chip U4 uses integrated circuit MCC33035 or DSPIC30F2010 or IR2136.
Speed regulation process：Speed adjusting resistance R1 is adjusted, when speed adjusting resistance R1 is in 0 position of speed governing, electricity is driven in winding coil B6
Flow for 0, be reacted to commutating circuit output current and be approximately equal to 0, be similarly reacted to electric current output in winding coil A4 circuits and be approximately equal to
0, input speed is rated speed at this time, output speed 0；When speed adjusting resistance R1 expires journey position in speed governing, winding coil B 6
Middle driving current is maximum, is reacted to commutating circuit output current maximum, it is defeated to be similarly reacted to electric current in winding coil A4 circuits
Go out maximum, input power is approximately equal to output power at this time, and input speed is approximately equal to output speed；When accelerating and running, just push away and (drive
It is dynamic) work；Braking operation when slowing down and shutting down.The process for adjusting speed adjusting resistance R1 is the speed regulation process of governor.
Embodiment two
A kind of permanent-magnet speed governor of fixed magnetic gap, including be connected with input shaft 3 armature rotor, positioned at armature rotor circumference
The outer magnetic stator in outside and the interior magnet rotor positioned at armature rotor inside circumference being connected with output shaft 7；The armature turns
Attached bag includes iron core 5, along the circumferentially distributed winding coil B 6 of 5 inner peripheral surface of iron core and circumferentially distributed along 5 outer circumference surface of iron core
Winding coil A 4；The interior magnet rotor has permanent magnet B 8 along its outer circumference surface is circumferentially distributed；The outer magnetic stator includes
Positioned at the fixed seat 1 of armature rotor periphery and along the circumferentially distributed permanent magnet A 2 of 1 inner peripheral surface of fixed seat；It is described around
The control system 9 for electric energy conversion is connected between group coil B 6 and winding coil A 4.
The control system 9 includes the circuit being made of coil windings B 6, controllable conduction component UO2, rectification module；
Coil windings B6 both ends are parallel with speed adjusting resistance R1, and adjusting control circuit and three-phase are connected between rectification module output positive and negative charge
Bridge inverter main circuit；Three-phase inverter bridge circuit output end wiring circle winding A 4；The three-phase inverter bridge circuit includes six
A field-effect tube VT1-VT6；The adjusting control circuit includes a three Hall element U1-U3 and control chip U4；Three
Power end, the ground terminal of Hall element U1-U3 is respectively connected to rectification module output head anode, anode, three Hall element U1-U3
Output terminal be connected to control chip U4 input terminals, control chip U4 power supplys termination rectification module output head anode, control chip
The output terminal of U4 is connected on the grid of six field-effect tube VT1-VT6 respectively, and the control terminal of control chip U4 draws driving control respectively
Line and brake control lines processed.
Preferably, the control chip U4 uses integrated circuit MCC33035 or DSPIC30F2010 or IR2136.
Preferably, the controllable conduction component UO2 uses silicon-controlled or metal-oxide-semiconductor.
Speed regulation process：Speed adjusting resistance R1 is adjusted, when speed adjusting resistance R1 is in 0 position of speed governing, controllable conduction component U02 is not led
Logical, electric current is 0 in winding coil B 6, and it is 0 to be reacted to commutating circuit output current, and electric current is 0 in 4 circuits of winding coil A, this
When input speed be rated speed, output speed 0；When speed adjusting resistance R1 expires journey position in speed governing, controllable conduction component U02
Complete to turn on, electric current is maximum in winding coil B 6, is reacted to commutating circuit output current as maximum, electricity in 4 circuits of winding coil A
Flow for maximum, input power is approximately equal to output power at this time, and input speed is approximately equal to output speed；When accelerating and running, just push away
(driving) works；Braking operation when slowing down and shutting down.The process for adjusting speed adjusting resistance R1 is the speed regulation process of governor.
Claims (5)
- A kind of 1. permanent-magnet speed governor of fixed magnetic gap, it is characterised in that：Including be connected with input shaft (3) armature rotor, be located at The outer magnetic stator of armature rotor periphery and the interior magnetic positioned at armature rotor inside circumference being connected with output shaft (7) turn Son；The armature rotor includes iron core (5), along the circumferentially distributed winding coil B (6) of iron core (5) inner peripheral surface and along iron The circumferentially distributed winding coil A (4) of core (5) outer circumference surface；The interior magnet rotor has permanent magnetism along its outer circumference surface is circumferentially distributed Body B (8)；The outer magnetic stator is included positioned at the fixed seat (1) of armature rotor periphery and along fixed seat (1) inner peripheral surface Circumferentially distributed permanent magnet A (2)；It is connected between the winding coil B (6) and winding coil A (4) for electric energy conversion Control system (9).
- 2. the permanent-magnet speed governor of fixed magnetic gap according to claim 1, it is characterised in that：Control system (9) bag Include rectification module, the adjusting control circuit being connected between rectification module output positive and negative charge for being connected on coil windings B (6) both ends And three-phase inverter bridge circuit；Three-phase inverter bridge circuit output end wiring circle winding A (4)；The three-phase bridge type inverse electricity Road includes six field-effect tube (VT1-VT6)；The adjusting control circuit includes three Hall elements (U1-U3) and a control Chip (U4)；Power end, the ground terminal of three Hall elements (U1-U3) are respectively connected to rectification module output head anode, anode, and three The output terminal of a Hall element (U1-U3) is connected to control chip (U4) input terminal, control chip (U4) power supply termination rectification mould Block output head anode, the output terminal of control chip (U4) are connected on the grid of six field-effect tube (VT1-VT6), control chip respectively (U4) control terminal draws drive control line and brake control lines respectively, and control chip (U4) is further connected with speed adjusting resistance (R1).
- 3. the permanent-magnet speed governor of fixed magnetic gap according to claim 1, it is characterised in that：Control system (9) bag Include the circuit being made of coil windings B (6), controllable conduction component (UO2), rectification module；Coil windings B (6) both ends are parallel with Speed adjusting resistance (R1), is connected to adjusting control circuit and three-phase inverter bridge circuit between rectification module output positive and negative charge；Three-phase Bridge inverter main circuit output end wiring circle winding A (4)；The three-phase inverter bridge circuit includes six field-effect tube (VT1- VT6)；The adjusting control circuit includes three Hall elements (U1-U3) and a control chip (U4)；Three Hall elements (U1-U3) power end, ground terminal is respectively connected to rectification module output head anode, anode, three Hall elements (U1-U3) it is defeated Outlet is connected to control chip (U4) input terminal, control chip (U4) power supply termination rectification module output head anode, control chip (U4) output terminal is connected on the grid of six field-effect tube (VT1-VT6) respectively, and the control terminal of control chip (U4) is drawn respectively Drive control line and brake control lines.
- 4. the permanent-magnet speed governor of the fixation magnetic gap according to Claims 2 or 3, it is characterised in that：The control chip (U4) MCC33035 or DSPIC30F2010 or IR2136 is used.
- 5. the permanent-magnet speed governor of fixed magnetic gap according to claim 3, it is characterised in that：The controllable conduction component (UO2) silicon-controlled or metal-oxide-semiconductor is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055452.XA CN108011491A (en) | 2017-11-01 | 2017-11-01 | A kind of permanent-magnet speed governor of fixed magnetic gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055452.XA CN108011491A (en) | 2017-11-01 | 2017-11-01 | A kind of permanent-magnet speed governor of fixed magnetic gap |
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| Publication Number | Publication Date |
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| CN108011491A true CN108011491A (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711055452.XA Pending CN108011491A (en) | 2017-11-01 | 2017-11-01 | A kind of permanent-magnet speed governor of fixed magnetic gap |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2301811Y (en) * | 1997-06-24 | 1998-12-23 | 中国船舶工业总公司第七研究院第七一二研究所 | Permanent-magnet brushless DC motor |
| JP2013258876A (en) * | 2012-06-14 | 2013-12-26 | Nippon Steel & Sumitomo Metal | Eddy current type speed reducer |
| CN104362823A (en) * | 2014-12-05 | 2015-02-18 | 刁俊起 | Permanent magnet speed controller with fixed magnetic gap |
| WO2016086514A1 (en) * | 2014-12-05 | 2016-06-09 | 刁俊起 | Permanent magnet speed governor having fixed magnetic gap |
| CN105720791A (en) * | 2016-03-17 | 2016-06-29 | 北京工业大学 | Coil rotation type electromagnetic eddy-current speed regulator |
| CN106451997A (en) * | 2016-08-26 | 2017-02-22 | 诸暨和创磁电科技有限公司 | Magneto-electric speed regulator |
-
2017
- 2017-11-01 CN CN201711055452.XA patent/CN108011491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2301811Y (en) * | 1997-06-24 | 1998-12-23 | 中国船舶工业总公司第七研究院第七一二研究所 | Permanent-magnet brushless DC motor |
| JP2013258876A (en) * | 2012-06-14 | 2013-12-26 | Nippon Steel & Sumitomo Metal | Eddy current type speed reducer |
| CN104362823A (en) * | 2014-12-05 | 2015-02-18 | 刁俊起 | Permanent magnet speed controller with fixed magnetic gap |
| WO2016086514A1 (en) * | 2014-12-05 | 2016-06-09 | 刁俊起 | Permanent magnet speed governor having fixed magnetic gap |
| CN105720791A (en) * | 2016-03-17 | 2016-06-29 | 北京工业大学 | Coil rotation type electromagnetic eddy-current speed regulator |
| CN106451997A (en) * | 2016-08-26 | 2017-02-22 | 诸暨和创磁电科技有限公司 | Magneto-electric speed regulator |
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Application publication date: 20180508 |