CN207251396U - PWM rotational speed regulation formula rare-earth permanent-magnet electric machines - Google Patents
PWM rotational speed regulation formula rare-earth permanent-magnet electric machines Download PDFInfo
- Publication number
- CN207251396U CN207251396U CN201721270012.1U CN201721270012U CN207251396U CN 207251396 U CN207251396 U CN 207251396U CN 201721270012 U CN201721270012 U CN 201721270012U CN 207251396 U CN207251396 U CN 207251396U
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- earth permanent
- rare
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- pwm
- magnet
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Abstract
The utility model discloses a kind of PWM rotational speed regulations formula rare-earth permanent-magnet electric machine,Including motor body,Central rotating shaft,Rotor core,Rare-earth permanent magnet and stator core,The central rotating shaft is equipped with the rotor core,The rare-earth permanent magnet is installed on inside the rotor core,The stator core is arranged on the motor body inner wall,Magnet exciting coil is wrapped with the stator core,Power module and pwm control circuit are equipped with the motor body,The pwm control circuit includes transformer,Bridge rectifier,Boost circuits and buck circuits,The power module is connected with the transformer,The transformer is connected with the bridge rectifier,The bridge rectifier connects the boost circuits and the buck circuits respectively,The boost circuits and the buck circuits are connected to the magnet exciting coil.By the above-mentioned means, the utility model can use the method for pulse width debugging to regulate and control the rotating speed of magneto, the Stability and veracity of speed governing is improved.
Description
Technical field
Magneto field is the utility model is related to, more particularly to a kind of PWM rotational speed regulations formula rare-earth permanent-magnet electric machine.
Background technology
China's rare earth resources enrich, and rare earth resources are mainly for the manufacture of rare earth permanent-magnetic material, and rare earth permanent-magnetic material is for electricity
Sub- electric utility has huge facilitation, such as the development of rare-earth permanent-magnet electric machine, in recent years more and more magnetoes
Being produced and come into operation, magneto built-in permanent magnet structure, instead of the excitation or armature structure in common electric machine, its
Working characteristics and general motor are different, so being also required to improve to the control mode of the working characteristics such as its rotating speed.
Utility model content
The utility model, can mainly solving the technical problems that provide a kind of PWM rotational speed regulations formula rare-earth permanent-magnet electric machine
The method debugged using pulse width regulates and controls the rotating speed of magneto, improves the Stability and veracity of speed governing.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of PWM rotational speed regulations are provided
Formula rare-earth permanent-magnet electric machine, including motor body, central rotating shaft, rotor core, rare-earth permanent magnet and stator core, the center turn
Axis level is lying in the motor body center of inside, and the central rotating shaft is equipped with the rotor core, the rare earth permanent magnet
Body be installed on the rotor core inside, the stator core be arranged on the motor body inner wall on, on the stator core around
Magnet exciting coil is connected to, gap is equipped between the stator core and the rotor core, the motor body shell side is equipped with
Power control box, the power control box is interior to be equipped with power module and pwm control circuit, and the pwm control circuit includes transformation
Device, bridge rectifier, boost circuits and buck circuits, the power module are connected with the transformer, the transformer with
The bridge rectifier connection, the bridge rectifier connects the boost circuits and the buck circuits respectively, described
Switching electronics, the switch electronic member are equipped between boost circuits and the buck circuits and the bridge rectifier
Part is IGBT or MOSFET, and the boost circuits and the buck circuits are connected to the magnet exciting coil.
In one preferred embodiment of the utility model, the boost circuits and the buck circuits are internally provided with some
Capacitance, inductance and thyratron transistor.
In one preferred embodiment of the utility model, the connection mode of the rare-earth permanent magnet and the rotor core is
Convex type is installed or embedded installation.
In one preferred embodiment of the utility model, the motor body lower end is equipped with pedestal, and the pedestal lower end is set
There is cushion pad.
The beneficial effects of the utility model are：The utility model employs operating of the PWM ripples modulation technique to magneto
It is controlled, the full name of PWM ripples is pulse width modulation, using chopped wave technique, controls the break-make of internal thyristor to control
ON time processed accounts for the ratio in total cycle, i.e. duty cycle, and duty cycle is bigger, and output voltage is bigger, and motor speed is faster, otherwise more
Slowly, it is that control means are flexible the advantages of PWM technologies, it is possible to achieve the stepless smooth control of direct current generator, Current Voltage output
Characteristic is more stable.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the utility model
Example is applied, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Other attached drawings are obtained, wherein：
Fig. 1 is the electrical block diagram of one preferred embodiment of the utility model PWM rotational speed regulation formulas rare-earth permanent-magnet electric machine；
Fig. 2 is the structure diagram of one preferred embodiment of the utility model PWM rotational speed regulation formulas rare-earth permanent-magnet electric machine；
The mark of each component is as follows in attached drawing：1st, motor body；2nd, central rotating shaft；3rd, rotor core；4th, rare-earth permanent magnet；
5th, stator core；6th, magnet exciting coil；7th, power control box；8th, power module；9th, pwm control circuit；10th, transformer；11st, bridge-type
Rectification circuit；12nd, boost circuits；13rd, buck circuits；14th, switching electronics；15th, pedestal；16th, cushion pad.
Embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained without making creative work, belongs to
The scope of the utility model protection.
Please refer to Fig.1 and Fig. 2, the utility model embodiment include：
A kind of PWM rotational speed regulations formula rare-earth permanent-magnet electric machine, including motor body 1, central rotating shaft 2, rotor core 3, rare earth
Permanent magnet 4 and stator core 5,2 level of central rotating shaft are lying in 1 center of inside of motor body, the central rotating shaft
The rotor core 3 is equipped with, the rare-earth permanent magnet 4 is installed on inside the rotor core 3, and the stator core 5 is arranged on
On 1 inner wall of motor body, magnet exciting coil 6, the stator core 5 and the rotor iron are wrapped with the stator core 3
Gap is equipped between core 3, the 1 shell side of motor body is equipped with power control box 7, electricity is equipped with the power control box 7
Source module 8 and pwm control circuit 9, the pwm control circuit 9 include transformer 10, bridge rectifier 11, boost circuits 12
With buck circuits 13, the power module 8 is connected with the transformer 10, the transformer 10 and the bridge rectifier 11
Connection, the bridge rectifier 11 connect the boost circuits 12 and the buck circuits 13, the boost circuits respectively
Switching electronics 14, the switching electronics are equipped between 12 and the buck circuits 13 and the bridge rectifier 11
14 be IGBT or MOSFET, and the boost circuits 12 and the buck circuits 13 are connected to the magnet exciting coil 6.
In addition, the boost circuits 12 and the buck circuits 13 are internally provided with some capacitances, inductance and shutter stream
Pipe.
In addition, the connection mode of the rare-earth permanent magnet 4 and the rotor core 3 is installed for convex type or embedded peace
Dress.
In addition, the motor body lower end is equipped with pedestal 15,15 lower end of pedestal is equipped with cushion pad 16.
2 level of shaft is lying in 1 center of inside of motor body centered on the operation principle of the utility model, on central rotating shaft
Equipped with rotor core 3, rare-earth permanent magnet 4 is installed on inside rotor core 3, the connection mode of rare-earth permanent magnet 4 and rotor core 3
For convex type installation or embedded installation, stator core 5 is arranged on 1 inner wall of motor body, and excitation wire is wrapped with stator core 3
Circle 6, is equipped with gap between stator core 5 and rotor core 3.
1 shell side of motor body is equipped with power control box 7, and power module 8 is equipped with power control box 7 and PWM is controlled
Circuit 9, pwm control circuit 9 include transformer 10, bridge rectifier 11, boost circuits 12 and buck circuits 13, power supply mould
Block 8 is connected with transformer 10, and transformer 10 is connected with bridge rectifier 11, this circuit module function is to be depressured alternating current simultaneously
Rectification uses for powered by direct current machine.
Bridge rectifier 11 connects boost circuits 12 and buck circuits 13, boost circuits 12 and buck electricity respectively
Road 13 is internally provided with some capacitances, inductance and thyratron transistor, passes through capacitance and the charge and discharge electro ultrafiltration and shutter stream of inductance
The waveform of the on-off action control output voltage of pipe, duty cycle is bigger, and output voltage is bigger, and motor operating is faster, otherwise slower.
Switching electronics 14, switch electricity are equipped between boost circuits 12 and buck circuits 13 and bridge rectifier 11
Subcomponent 14 is IGBT or MOSFET, and switching electronics gate pole connects drive circuit, controls its switch conduction, is selectively used
Boosting or buck functionality, boost circuits 12 and buck circuits 13 are connected to magnet exciting coil 6.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
The equivalent structure or equivalent flow shift made using the utility model description, is directly or indirectly used in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (4)
1. a kind of PWM rotational speed regulations formula rare-earth permanent-magnet electric machine, including motor body, central rotating shaft, rotor core, rare-earth permanent magnet
And stator core, it is characterised in that the central rotating shaft level is lying in the motor body center of inside, the central rotating shaft
The rotor core is equipped with, the rare-earth permanent magnet is installed on inside the rotor core, and the stator core is arranged on described
On motor body inner wall, magnet exciting coil is wrapped with the stator core, is set between the stator core and the rotor core
There is gap, the motor body shell side is equipped with power control box, and power module is equipped with the power control box and PWM is controlled
Circuit processed, the pwm control circuit include transformer, bridge rectifier, boost circuits and buck circuits, the power supply mould
Block is connected with the transformer, and the transformer is connected with the bridge rectifier, and the bridge rectifier connects respectively
The boost circuits and the buck circuits, between the boost circuits and the buck circuits and the bridge rectifier
Equipped with switching electronics, the switching electronics are IGBT or MOSFET, and the boost circuits and the buck circuits connect
It is connected to the magnet exciting coil.
2. PWM rotational speed regulations formula rare-earth permanent-magnet electric machine according to claim 1, it is characterised in that the boost circuits and
The buck circuits are internally provided with some capacitances, inductance and thyratron transistor.
3. PWM rotational speed regulations formula rare-earth permanent-magnet electric machine according to claim 1, it is characterised in that the rare-earth permanent magnet
Connection mode with the rotor core is convex type installation or embedded installation.
4. PWM rotational speed regulations formula rare-earth permanent-magnet electric machine according to claim 1, it is characterised in that under the motor body
End is equipped with pedestal, and the pedestal lower end is equipped with cushion pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270012.1U CN207251396U (en) | 2017-09-29 | 2017-09-29 | PWM rotational speed regulation formula rare-earth permanent-magnet electric machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270012.1U CN207251396U (en) | 2017-09-29 | 2017-09-29 | PWM rotational speed regulation formula rare-earth permanent-magnet electric machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251396U true CN207251396U (en) | 2018-04-17 |
Family
ID=61889615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721270012.1U Expired - Fee Related CN207251396U (en) | 2017-09-29 | 2017-09-29 | PWM rotational speed regulation formula rare-earth permanent-magnet electric machines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207251396U (en) |
-
2017
- 2017-09-29 CN CN201721270012.1U patent/CN207251396U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20180929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |