CN104979991B - A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque - Google Patents
A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque Download PDFInfo
- Publication number
- CN104979991B CN104979991B CN201510127191.2A CN201510127191A CN104979991B CN 104979991 B CN104979991 B CN 104979991B CN 201510127191 A CN201510127191 A CN 201510127191A CN 104979991 B CN104979991 B CN 104979991B
- Authority
- CN
- China
- Prior art keywords
- rotor
- torque
- stator
- brushless motor
- permanent magnetism
- 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.)
- Active
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque, including motor shaft, rotor, stator, casing, end cap etc..It is characterized in that an automatic mechanism for adapting to torque variation and adjusting magnetic flux size is arranged in internal rotor, it is mainly made of spring TT＆C system and a worm drive pair, can the torque that stator current generates in rotor field be converted into axial thrust load in proportion makes stator do spiral shell on motor shaft into movement, to make stator change the axial position of rotor, air-gap flux amount is turned by original constant the function of torque, rotating speed is set to change with torque inverse ratio, and output power is constant always, make brushless motor that there is the adaptive constant power electrodeless variable-speed characteristic of several times gear ratio.The present invention realizes Direct Torque Control effect with simple and reliable method.
Description
Technical field
The present invention relates to permanent magnetic brushless, especially vehicle driving motor.
Background technology
In recent years, for environmental protection and energy saving, electric vehicle and technology are constantly brought forth new ideas.Due to rareearth magnetic material
Good characteristic and manufacturing process breakthrough, be commonly used using the brushless motor of strong magnetic force permanent-magnet material excitation.However, often
Since its magnetic structure immobilizes, excitation power cannot be adjusted rule permanent magnetic brushless in real time, therefore cannot obtain electrical excitation
The governor control characteristics of motor, especially lamp power stepless time adjustment characteristic.And driving motor of electric vehicle is just needed in certain work(
There is the broad governor control characteristics for being several times as much as rated speed in rate, in order to realize this characteristic, or can be used either synchronously or asynchronously electric
Machine AC inverter driving system, some are then vehicle increase mechanical variable speed system, use electric current and permanent magnetism compound rectifier excitation also, also
Birotor/bimorph transducer, in addition also machine winding connection is variable etc., and the design of this respect is countless, be provided to realize etc.
Power speed control, so far still in effort.Because these technical solutions or limited or excessive the increasing of effect are entirely moved
The complexity and manufacturing cost of system.From change magnetic circuit make hand technical solution designed flux shunt, complementation excitation,
Multiple patents of invention such as phase shift adjustable magnetic.Such as I am in the Chinese patent of application in 2012, CN103580411A, a kind of permanent magnetism without
Brush adaptive rate driving motor tracks rotating speed, the angle of centrifugal force and counter spring force equilibrium condition and spring using centrifugal mechanism
Displacement determines that the phase difference of rotor magnetic pole realizes weak magnetic speedup.Since the variation of centrifugal force is nonlinear, and spring is typically
Linear, it is not easy to realize accurate matching.In practice, it has been found that if using motor characteristic another parameter --- electromagnetic torque
As feedback, using the magnetic field magnetic field state of its reaction force regulation motor, can be more directly more stable obtain constant power change
The mechanical property of speed..
Utility model content
A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque includes：One is made of stator core and winding
Armature stator, function be generate rotating excitation field；One p-m rotor being made of magnetic pole and yoke, function are that same armature is fixed
The rotating excitation field of son interacts and rotates simultaneously output torque, and including the basic components such as motor shaft and end cap casing.It is special
Sign is that the rotor itself also includes a mechanism by output torque feedback regulation magnetic flux, and the mechanism is by spring force measuring machine structure
It is formed with worm drive pair, worm drive adjutant's electromagnetic torque is transformed into axis direction and rotor is driven to generate displacement, and spring is then
Generate the opposite corresponding restoring force of size in direction so that the axial position of rotor changes in real time, reaches adjusting air-gap flux
It measures and then adjusts torque coefficient and back emf coefficient, to realize the purpose of the adaptive continuous change of constant power.
One of worm drive pair is helical spline pair, including helical spline shaft and splined nut, and helical spline shaft is in electricity
The feature processed on arbor, splined nut are connected with rotor end plates, and when rotor is by when torque, rotor can be on axis
It is mobile, while power being exported from motor shaft.
Another worm drive pair is the pin in spiral prominence wheel set, including the helical-type line and mating plate on motor shaft surface
Son, pin are connected with rotor end plates, and when rotor is by when torque, rotor can move on axis, and colleague is by power from motor
Axis exports.
The spring force measuring machine structure includes spring, fixing screws, adjusting screw, and one end of spring is locked in by fixing screws
On flux shunt device, flux shunt device can only be relatively rotated and cannot be moved axially with motor shaft cooperation, and the spring other end passes through tune
It saves screw to connect with rotor end plates, spin movement with rotor, spring is given initial force value in advance so that loading moment is less than
When setting value, stator and rotor are maintained at initial position, and initial value is stator and rotor staggered positions.
Flux shunt device is located at stator one end circumferential edge edge, and material is high magnetic permeability soft magnetic materials, the master of flux shunt device
It is the reluctance force for cutting down stator movement to act on.
Further, make the gap of end plate and flux shunt device sufficiently small and smooth, then constitute air damper, have and filter out
Disturbance torque and the effect for avoiding overshoot.
Another kind design is complementary excitation, and the length of p-m rotor has more a bit of length than stator, this bit of length
The magnet of degree configuration is identical with raw footage quantity but polarity is on the contrary, play negative function, this design enhances weak magnetic effect, but wants
Multi-purpose magnet is suitable for the motor that total length is limited.
Due to using abovementioned technology, exports rotating speed and torque changes automatically with load resistance, but in specified input electricity
In the case that power, that is, rated voltage electric current is constant, output power is constant always, and the wheel hub motor of the existing slow-speed of revolution is made to obtain
The adaptive constant power electrodeless variable-speed characteristic of several times gear ratio.And when high speed, since magnetic flux is few in iron core, iron loss is few, low
Although magnetic flux becomes larger when fast, flat rate reduces, and less iron loss and higher efficiency can be obtained in very wide condition range,
The present invention very inexpensive realizes high-end Direct Torque Control effect with simple and reliable.Make brushless motor that there is several times no-load voltage ratio
Electrodeless variable-speed characteristic.
Description of the drawings
Fig. 1 is the specific design example of the present invention；
Wherein 1 motor shaft, 1a helical spline shafts, 1b splined nuts, 2 bearings, 3 binding posts, 4 electromagnetism windings, 5 stator iron
The heart, 6 end plate A, 7 magnet, 8 yokes, 9 end plate B, 10 flux shunt devices, 11 hall signal lines, 12 plugs, 13 tail-hoods, 14 circuits
Plate, 15 Hall elements, 16 bearings, 17 magnet rings, 18 fixing screws, 19 springs, 20 adjusting screws, 21 motor casings, 22 protecgulums.
Fig. 2 is the increasing magnetic state for designing example.
Fig. 3 is the design example using complementary excitation.Wherein 1c is pin, and 1d is helicla flute, 7A magnet, 7B complementation magnet,
14 hall circuitboards, 15 Hall elements, remaining parts are the same as attached drawing 1.
Specific implementation mode
Illustrate Principles of Regulation and speed-change process with reference to Fig. 1 and Fig. 2.
Illustrate the course of work of adaptive continuous change of the invention by taking vehicle traction as an example below：Energization front motor is in attached
State shown in Fig. 1, under the action of the spring, stator are biased to the left side, and the magnetic flux of a part of rotor permanent magnet enters flux shunt device
Forming circuit and not across ironcore choke, if the magnetic flux of magnet segment of alignment stator core coil is known as effective magnetic
Chain, then at this moment magnetic linkage is minimum value, i.e., original state is weak magnetic state.
After energization, if apply electrical power it is smaller, such as vehicle level road be lightly loaded start to walk when, by taking handle operates as an example, slightly
Handle signal, motor is by weak magnetic state partial voltage starting, and because torque is little, starting is soft；Such as heavy-load start, for example need fast
It starts to walk on speed starting or slope, it is desirable that motor provides high torque, then adds handle, applies high voltage, stator winding 4 to motor
Middle electric current is increase rapidly up to rated value or more, make air gap generate electromagnetic torque quickly increase on year-on-year basis, this moment loading in turn
Sub- magnet 7 is transmitted to further through worm drive secondary 1a and 1b on axis 1, and by 1 reaction force of motor shaft, and the direction of power is directed toward
Increase one end of magnetic linkage, then stator 3 overcomes piston and spring resistance to be fast moved to the left side, and mobile speed is controlled with handle
Related, being moved to the left will cause the magnetic flux of stator to increase, and output torque increases, this process carries out automatically, straight that power output is caused to turn round
Until square balances each other with loading moment or reaches limit value, at this moment motor interior location such as Fig. 2.
After after vehicle start or being transferred to level road by ramp, loading moment becomes smaller, if the input power depending on still maintaining,
At this moment since the moment of resistance becomes smaller, motor accelerated service, rotating speed is stepped up, while back-emf increases, when back-emf tends to be specified
When voltage, for common magneto, since electric current is reduced rapidly, rotating speed is not further added by, and power declines, and for this patent,
Resistance becomes hour, and spring is reduced by external force pressure, and loosens elongation, and stator moves right under the counter-force effect of spring, causes
Stator magnetic linkage reduces, and back-emf reduces simultaneously, and it is inconvenient that current of electric tends to keep stablizing, then input power stablizes constant, motor
Continue accelerated service, until some speed state, the moment of resistance is in balance again with electromagnetic torque, and electromagnetic torque axial thrust load is same
Spring force rebalances, and motor enters new steady s tate.
In whole process, spring measures load torque in real time, and adjusts stator shaft orientation position, makes the magnetic linkage size in air gap
It is the most advantageous to power of motor.No matter how torque and rotating speed change, but their product, that is, output power is constant always.Permanent work(
The benefit of rate speed change is that the ratio i.e. efficiency of output and input power are also constant, we are in very wide velocity interval in this way
High efficiency can be obtained.
Claims (6)
1. a kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque, including：One by stator core (5) and winding
(4) the armature stator constituted, function are to generate rotating excitation field；One p-m rotor being made of magnetic pole (7) and yoke (8),
Function is the rotating excitation field interaction of same armature stator and rotates and output torque, and including basic components：Motor shaft
(1), end cap and casing；It is characterized in that the rotor itself also includes a mechanism by output torque feedback regulation magnetic flux,
The mechanism is made of spring force measuring machine structure and worm drive pair, and worm drive adjutant's electromagnetic torque is transformed into axis direction and drives
Rotor generates displacement, and spring then generates the corresponding restoring force of the opposite size in direction so that the axial position of rotor becomes in real time
Change, reaches and adjust air-gap flux amount and then adjust torque coefficient and back emf coefficient, to realize that constant power adaptively continuously becomes
The purpose of speed；
The spring force measuring machine structure includes spring (19), fixing screws (18), adjusting screw (20), and fixing screws are by the one of spring
End is locked on flux shunt device (10), and flux shunt device (10) same to motor shaft (1) cooperation can only be relatively rotated and cannot axially be moved
Dynamic, spring (19) other end is connected by adjusting screw (20) same to rotor end plates (6), is spinned movement with rotor, and spring is advance
It is given initial force value so that when loading moment is less than setting value, stator and rotor are maintained at initial position, and initial value is stator
With rotor staggered positions.
2. a kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque as described in claim 1, it is characterised in that institute
One of worm drive pair stated is helical spline pair, including helical spline shaft (1a) and splined nut (1b), helical spline shaft
(1a) is the feature processed on motor shaft, and splined nut (1b) is connected with rotor end plates, when rotor is by torque,
Rotor can move on axis, while power being exported from motor shaft.
3. a kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque as described in claim 1, it is characterised in that institute
The worm drive pair stated second is that pin in spiral prominence wheel set, including the helicla flute (1d) and mating plate on motor shaft surface
(1c), pin (1c) same to rotor end plates (6) are connected, and when rotor is by torque, rotor can make spiral movement on axis, simultaneously
Power is exported from motor shaft.
4. the adaptive continuous change permanent magnetism inner-rotor brushless motor of a kind of torque according to claim 1, it is characterised in that
The flux shunt device (10) is located at stator one end circumferential edge edge, and material is high magnetic permeability soft magnetic materials, and flux shunt device is
The magnet for removing stator provides flux path, can cut down the reluctance force of stator movement.
5. the adaptive continuous change permanent magnetism inner-rotor brushless motor of a kind of torque according to claim 1, it is characterised in that
The flux shunt device (10) and the gap of end plate (6) are sufficiently small and smooth, have air damping effect, have and eliminate perturbed force
Square and the effect for avoiding overshoot.
6. the adaptive continuous change permanent magnetism inner-rotor brushless motor of a kind of torque according to claim 1, it is characterised in that
The length of the p-m rotor can have more a bit of length than stator, and the magnet of this segment length configuration is the same as raw footage quantity
For identical but polarity on the contrary, playing negative function, this design enhances weak magnetic effect, but to be mostly used magnet, limited suitable for total length
Motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127191.2A CN104979991B (en) | 2015-03-24 | 2015-03-24 | A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127191.2A CN104979991B (en) | 2015-03-24 | 2015-03-24 | A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104979991A CN104979991A (en) | 2015-10-14 |
| CN104979991B true CN104979991B (en) | 2018-07-24 |
Family
ID=54276194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510127191.2A Active CN104979991B (en) | 2015-03-24 | 2015-03-24 | A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104979991B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655689A (en) * | 2017-01-03 | 2017-05-10 | 重庆西伟迪磁电动力科技有限公司 | Bidirectional dual-helix permanent magnet brushless motor with torque adaptive speed change |
| CN106655680B (en) * | 2017-02-25 | 2023-09-05 | 兰州交通大学 | Adjustable magnetic rotating motor |
| EP3747036A1 (en) | 2018-02-02 | 2020-12-09 | Robotiq Inc. | A programmable permanent magnet actuator and a magnetic field generation apparatus and method |
| CN108462271A (en) * | 2018-03-12 | 2018-08-28 | 宁勤顺 | The brushless direct current motor of included torsion slow start slow stop and its application |
| CN108718122A (en) * | 2018-06-06 | 2018-10-30 | 林峭 | A kind of motor for taking into account high speed and low-speed performance |
| CN112523952B (en) * | 2020-11-26 | 2022-02-08 | 诸暨和创电机科技有限公司 | Permanent magnet wind driven generator with torque gradient adjustment function |
| CN112994344A (en) * | 2021-02-04 | 2021-06-18 | 广州橙行智动汽车科技有限公司 | Motor, method for changing input current of motor, readable medium and automobile |
| CN113193705A (en) * | 2021-04-30 | 2021-07-30 | 深圳市唯川科技有限公司 | Induction motor and garden tool |
| CN113541388A (en) * | 2021-07-22 | 2021-10-22 | 刘鹤 | Servo motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262547A (en) * | 1999-01-27 | 2000-08-09 | 南京仁源磁电机制造有限公司 | Method for stabilizing output voltage of permanent-magnet electric generator and voltage-stabilized permanent-magnet electric generator |
| CN102064656A (en) * | 2010-11-24 | 2011-05-18 | 杨荷 | Rotor slippage complementary exciting permanent-magnetic brushless variable speed motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10327569A (en) * | 1997-05-26 | 1998-12-08 | Hitachi Metals Ltd | Permanent-magnet brushless motor |
| CN103580411A (en) * | 2012-08-10 | 2014-02-12 | 杨荷 | Permanent-magnet brushless self-adaptive variable-speed drive motor |
-
2015
- 2015-03-24 CN CN201510127191.2A patent/CN104979991B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262547A (en) * | 1999-01-27 | 2000-08-09 | 南京仁源磁电机制造有限公司 | Method for stabilizing output voltage of permanent-magnet electric generator and voltage-stabilized permanent-magnet electric generator |
| CN102064656A (en) * | 2010-11-24 | 2011-05-18 | 杨荷 | Rotor slippage complementary exciting permanent-magnetic brushless variable speed motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104979991A (en) | 2015-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104979991B (en) | A kind of adaptive continuous change permanent magnetism inner-rotor brushless motor of torque | |
| US7999432B2 (en) | Field controllable rotating electric machine system with magnetic excitation part | |
| US20090045691A1 (en) | Field controllable rotating electric machine system with magnetic excitation part | |
| US7567006B2 (en) | Field controllable rotating electric machine system with flux shunt control | |
| EP1401087A1 (en) | Axially movable rotor | |
| US20080265702A1 (en) | Permanent magnetic brushless motor with length adjustable air gap based on load | |
| US20030057793A1 (en) | Rotor axial activation modulation of electric machinery due to reverse torque | |
| US10498206B2 (en) | Electric tool | |
| CN103580411A (en) | Permanent-magnet brushless self-adaptive variable-speed drive motor | |
| JP2013226038A5 (en) | ||
| US20140375151A1 (en) | Stepper motor with integrated brake and drive circuit | |
| CN102820730A (en) | Permanent magnet brushless direct current linear motor with structure of rotor screw | |
| CN104578561B (en) | A kind of self adaptation variable speed pm brushless in-wheel motor | |
| CN104917315B (en) | A kind of permanent magnetic brushless with many centrifugal film compounded governors | |
| GB2111331A (en) | Brushless d c motor | |
| CN104467338B (en) | A kind of switched reluctance machines of no-rotor position sensor | |
| CN202856593U (en) | Helical pair type permanent magnet governor | |
| US1595550A (en) | Variable-speed induction motor | |
| CN110635650B (en) | Three-stator brushless permanent magnet motor | |
| JP4676804B2 (en) | Magnet generator and method of adjusting output of magnet generator | |
| KR20150123388A (en) | Coil Type Variable Voltage Generator | |
| TW201601422A (en) | Ironless stepper motor and method thereof | |
| CN110635645B (en) | High-efficiency speed regulating method of brushless motor | |
| CN110635643B (en) | Power increasing and speed increasing method of brushless permanent magnet motor | |
| JP2005253168A (en) | Permanent magnet dynamo-electric machine and electric power steering device using it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160921 Address after: 400054, 73, Xianfeng village, Huaxi street, Banan District, Chongqing Applicant after: Chongqing West Meredith magnetoelectric Power Technology Co Ltd Address before: 400054 Chongqing city Banan District lijiatuo Industrial Road No. 28 Building 2 unit 6-2 3 Jinxiu Jiangnan Applicant before: Yang Shiguo |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |