CN208691115U - A kind of variable reluctance brushless motor system - Google Patents
A kind of variable reluctance brushless motor system Download PDFInfo
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- CN208691115U CN208691115U CN201821482313.5U CN201821482313U CN208691115U CN 208691115 U CN208691115 U CN 208691115U CN 201821482313 U CN201821482313 U CN 201821482313U CN 208691115 U CN208691115 U CN 208691115U
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- stator
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- folded
- core
- brushless motor
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Abstract
The utility model discloses a kind of variable reluctance brushless motor systems, including stator core, centralized stator winding and rotor core；Wherein, stator core and rotor core are all made of salient-pole structure；Stator core uses stacked structure, including mostly folded stator；Rotor core uses stacked structure, including mostly folded rotor；Stator is identical with folded several m of rotor；The tooth number of poles that stack stator is equipped with is identical as the tooth number of poles N that stack rotor is equipped with；The how folded stator of composition stator core is arranged in a staggered manner with the angle of 360/ (m*N), the how folded rotor for forming rotor core is aligned setting, or the how folded rotor of composition rotor core is arranged in a staggered manner with the angle of 360/ (m*N), forms the how folded stator alignment setting of stator core；The centralized stator winding of coiling is composed in series a phase on stack stator.The utility model variable reluctance brushless motor system torque pulsation is small, has alternate independence.
Description
Technical field
It is small that the utility model provides a kind of simple structure, high reliablity, torque pulsation, bipolar with alternate independence
Property stacked variable reluctance brushless motor system, belong to reluctance motor manufacture technical field.
Background technique
Representative of the switched reluctance machines as a kind of no rare earth, brushless motor is just closed always extensively at the beginning of the proposition
Note and research.Centralized winding coil is nested in its stator core, rotor is only formed by silicon steel plate stacking, not only without winding, but also
Without permanent magnet, it is suitble to high speed and more bad working environments environment.The motor is run by reluctance torque, and starting current is small, plays turn
Square is big, speed-regulating range width；Every phase winding of motor is all made of concentratred winding structure, and end is shorter, and coiling difficulty is low, and copper loss is small；
In addition, mutual inductance is very small between the every phase winding of the motor, i.e. magnetic field coupling degree is low, ensure that motor has preferable fault-tolerance
Can, and every phase winding will not be connected directly on circuit, even if a certain phase winding breaks down, entire drive system still can be with
Maintain a degree of normal operation.Currently, switched reluctance machines had shown that in industrial speed-regulating system field it is powerful competing
Strive power, electric car, household electrical appliance, textile machine, in terms of also hold out broad prospects.
Although switched reluctance machines have the above plurality of advantages, but still there are some bottleneck problems to restrict switching magnetic-resistance electricity
The further genralrlization of machine.
(1) electromagnetic torque of switched reluctance machines is formed by stacking by a series of pulse torques, and synthesis torque is not one
Steady state value, therefore there are intrinsic torque pulsations, torque pulsation is more apparent when especially motor low speed is run, Yi Yinqi electromagnetic noise
And the fluctuation of speed, so that limit switch reluctance motor is in certain applications for requiring smooth torque, being accurately positioned occasion, and motor
Radial magnetic pull also bring along apparent vibration and noise.
(2) since the electric current of switched reluctance machines is in unidirectional pulse, so that choosing switch element capacity and power change
It is restricted in the versatility of parallel operation.The main circuit power module of especially Conventional switched reluctance motor generallys use three-phase not
Symmetrical bridge power topological circuit, every phase winding use two main switches, two unhurried current diodes, can not be with the three-phase bridge of standard
Formula main circuit module is general, in addition power module itself there is no unified national standard, this not only adds switched reluctance machines
The complexity and hardware cost of power inverter also constrain switched reluctance machines further genralrlization application.
Summary of the invention
Purpose of the utility model is to solve defect existing in the prior art, it is small to provide a kind of torque pulsation, tool
There is the bipolarity stacked variable reluctance brushless motor system of alternate independence.
To achieve the goals above, the utility model provides a kind of variable reluctance brushless motor system, including stator core,
Centralized stator winding and rotor core；Wherein, stator core and rotor core are all made of salient-pole structure；Stator core is using folded
Formula structure, including mostly folded stator；Rotor core uses stacked structure, including mostly folded rotor；Stator is identical with folded several m of rotor；
The tooth number of poles that stack stator is equipped with is identical as the tooth number of poles N that stack rotor is equipped with；Form stator core how folded stator with
The angle of 360/ (m*N) is arranged in a staggered manner, and forms the how folded rotor alignment setting of rotor core, or forms the mostly folded of rotor core
Rotor is arranged in a staggered manner with the angle of 360/ (m*N), forms the how folded stator alignment setting of stator core；Coiling on stack stator
Centralized stator winding is composed in series a phase.
By double-salient-pole structure and the stacked structure of stator and rotor, in conjunction with stack stator centralization stator winding list
Solely one phase of composition, increases the alternate independence of motor, reduces electricity, the magnetic, thermal coupling of motor between phase and phase, improve motor
The reliability and redundancy of ontology；Stator or rotor are often folded simultaneously to be staggered placements, can be effectively reduced torque pulsation, be vibrated
With noise.
Further, the utility model variable reluctance brushless motor system uses non-uniform gap structure.By using unevenness
Even gap structure, generating each phase winding is in the inductance waveform of sinusoidal variations with rotor-position.
Further, the control circuit of above-mentioned variable reluctance brushless motor system uses bipolarity bridge circuit.It is passed through sine
Alternating current generates stable electromagnetic torque with the cost for reducing switched reluctance machines.
Wherein, folding number m is 2-6；The tooth number of poles is 2,4,6 or 8.
Preferably, variable reluctance brushless motor system is that 3 phase 3 of bipolarity folds 6-6 structure, and wherein stator core includes 3 folded fixed
Son, rotor core include 3 folded rotors, and the tooth number of poles that stack rotor and stator are equipped with is 6；Variable reluctance brushless motor system passes through
The bipolarity bridge circuit is passed through three phase sine alternating current and carries out motor control.The utility model is suitable for the mostly folded N-N of multiphase
The variable reluctance brushless motor of structure, wherein N is that (such as 3 phases 3 fold the pole 2-2 to stator and rotor tooth number of poles, 3 phases 3 fold the pole 4-4,3 phases 3 fold 8-8
Pole etc.).
The utility model has the advantage that compared with prior art
(1) the utility model variable reluctance brushless motor system, stator or rotor use stacked structure, often fold and are individually composed
One phase enhances the alternate independence of motor, reduces electricity, the magnetic, thermal coupling of motor between phase and phase, improves motor body
Reliability and redundancy；
(2) the utility model often folds rotor or stator and is staggered placement, can effectively reduce torque pulsation, vibrate and make an uproar
Sound；
(3) the utility model uses a kind of non-uniform gap structure, generates each phase winding with rotor-position in sine
The inductance waveform of variation changes the inductance waveform of Conventional switched reluctance motor approximately linear, effectively reduces torque pulsation.
(4) often folded stator slot only has a set of winding to the utility model, and space utilization rate is high；Stator armature winding is often folded simultaneously
It is composed in series a phase, magnetic circuit is short, is lost low；
(5) the utility model is passed through m phase sinusoidal ac, and voltage, electric current are bipolaritys, using universal power converter,
Overcome Conventional switched reluctance power of motor driving circuit it is at high cost, lack unified standard, the shortcomings that can not being mass produced.
Detailed description of the invention
Fig. 1 is the variable reluctance brushless motor stator staggered arrangement schematic diagram that 3 phase 3 of bipolarity folds 6-6 structure；
Fig. 2 is the variable reluctance brushless electric motor rotor staggered arrangement schematic diagram that 3 phase 3 of bipolarity folds 6-6 structure；
Fig. 3 is that motor uses non-uniform gap structure chart；
Fig. 4 is that 3 phases 3 dissolve the electric operation control circuit figure of magnetic resistance brushless motor；
Fig. 5 is motor inductances waveform diagram；
Fig. 6 is using Bipolar control electromagnetic torque waveform.
In figure, 1- stator core, 2- rotor core, 3- armature winding, 4- non-uniform gap.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, the utility model bipolarity variable reluctance brushless motor system is a kind of reluctance motor, wherein stator iron
Core 1, rotor core 2 are salient-pole structure.And stator core 1, rotor core 2 are all made of stacked structure, by multiple common silicon steel
Piece is overrided to form.Both without winding or without permanent magnet on rotor core 2, there is concentratred winding 3 on stator tooth.The utility model variable reluctance
Brushless motor can be designed to a variety of different folded table structures, and also there are many different collocation for the tooth number of poles of stator and rotor, fold number
More, torque is bigger, and whole step angle is small, is conducive to reduce torque pulsation.
The present embodiment is by taking 3 phases 3 fold the variable reluctance brushless motor (i.e. 6 slots of stator/rotor, 6 pole) of 6-6 structure as an example, in detail
Carefully introduce the utility model.As depicted in figs. 1 and 2, the variable reluctance brushless motor of this case includes 3 folded stator cores 1,3 folded rotors
Iron core 2 turns the inside that iron core 2 is located at stator core 1, and stator core 1 and rotor core 2 are salient-pole structure, stator core 1
Can be made of silicon steel punching laminated, be simple to manufacture with rotor core 2, be wound on stator core 1 concentrate armature around
Group 3, the armature winding 3 often folded on stator are composed in series a phase.Fig. 1 is 3 folded stators with 20 ° of electrical angle staggered arrangement figures, and 3 folded turn
Son alignment.Fig. 2 is 3 folded rotors with 20 ° of degree electrical angle staggered arrangement figures, 3 folded stator alignment.As shown in figure 3, passing through uneven gas
4 structure of gap, generating each phase winding is in the inductance waveform of sinusoidal variations with rotor-position, as shown in Figure 5.
As shown in figure 4, driving armature winding by the sinusoidal current that bipolarity bridge circuit generates, stable electricity can produce
Magnetic torque, as shown in Figure 6.Traditional, shortage unification at high cost using switched reluctance machines power driving circuit is also overcomed simultaneously
Standard, the shortcomings that can not being mass produced.
Claims (4)
1. a kind of variable reluctance brushless motor system, the variable reluctance brushless motor system include stator core, centralized stator around
Group and rotor core；It is characterized by: the stator core and rotor core are all made of salient-pole structure；The stator core is adopted
With stacked structure, including mostly folded stator；The rotor core uses stacked structure, including mostly folded rotor；Stator and rotor it is folded
Number m is identical；The tooth number of poles that stack stator is equipped with is identical as the tooth number of poles N that stack rotor is equipped with；Form the more of stator core
Folded stator is arranged in a staggered manner with the angle of 360/ (m*N), forms the how folded rotor alignment setting of rotor core, or composition rotor iron
The how folded rotor of core is arranged in a staggered manner with the angle of 360/ (m*N), forms the how folded stator alignment setting of stator core；Stack stator
The centralized stator winding of upper coiling is composed in series a phase.
2. variable reluctance brushless motor system according to claim 1, it is characterised in that: the variable reluctance brushless motor system
Using non-uniform gap structure.
3. variable reluctance brushless motor system according to claim 2, it is characterised in that: the variable reluctance brushless motor system
Control circuit use bipolarity bridge circuit, be passed through sinusoidal ac and controlled.
4. variable reluctance brushless motor system according to claim 3, it is characterised in that: folded several m are 2-6；The tooth
Number of poles 2,4,6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482313.5U CN208691115U (en) | 2018-09-11 | 2018-09-11 | A kind of variable reluctance brushless motor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482313.5U CN208691115U (en) | 2018-09-11 | 2018-09-11 | A kind of variable reluctance brushless motor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208691115U true CN208691115U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821482313.5U Withdrawn - After Issue CN208691115U (en) | 2018-09-11 | 2018-09-11 | A kind of variable reluctance brushless motor system |
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| Country | Link |
|---|---|
| CN (1) | CN208691115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088527A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | A kind of variable reluctance brushless motor system |
-
2018
- 2018-09-11 CN CN201821482313.5U patent/CN208691115U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088527A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | A kind of variable reluctance brushless motor system |
| CN109088527B (en) * | 2018-09-11 | 2023-09-01 | 南京信息工程大学 | Variable reluctance brushless motor system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190402 Effective date of abandoning: 20230901 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190402 Effective date of abandoning: 20230901 |