CN101958617A - Double-characteristic three-phase motor with matching of double rotors and single stator - Google Patents
Double-characteristic three-phase motor with matching of double rotors and single stator Download PDFInfo
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- CN101958617A CN101958617A CN 201010502004 CN201010502004A CN101958617A CN 101958617 A CN101958617 A CN 101958617A CN 201010502004 CN201010502004 CN 201010502004 CN 201010502004 A CN201010502004 A CN 201010502004A CN 101958617 A CN101958617 A CN 101958617A
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Abstract
The invention provides a double-characteristic three-phase motor with matching of double rotors and a single stator, comprising a stator, a cage rotor and a synchronous rotor, wherein the two rotors are sleeved on a motor rotating shaft in series, the stator is sleeved on the periphery of the two rotors, the cage rotor is arranged at the front end of the motor rotating shaft, the synchronous rotor is arranged at the tail end of the motor rotating shaft, and the relative distance between the two rotors is 1.5-25mm in an axial direction. The three-phase motor adopts a double-rotor technology that the single stator is matched with the cage rotor and the rare-earth permanent-magnet synchronous rotor, integrates the performances of an asynchronous motor and the permanent-magnet synchronous motor, has the advantages of large magnetic-field intensity, large starting moment, small starting current, light weight, high efficiency, high power factor, energy saving, low noise, smooth operation, long service life, and the like and has excellent performance no matter in a low-speed state or a high-speed state.
Description
Technical field
The present invention relates to the drive of motor technical field, particularly a kind of single stator with two characteristics is joined two-spool three phase electric machine.
Background technology
Because the using and control very convenient of motor, have abilities such as self-starting, acceleration, braking, counter-rotating, can satisfy various service requirements, and have that operating efficiency is higher, the no flue dust peculiar smell of operation, pollution-free, a series of advantage such as noise is little, so motor all is used widely in every profession and trade fields such as industrial production, communications and transportation.Most widely used in various motor is AC asynchronous motor, and the performance of good performance is arranged when high-speed cruising, but have also that starting current is big, power factor is lower, speed governing is than shortcomings such as difficulties; And the permanent magnet synchronous motor starting current is little, the power factor height, and also its rotating speed and load size is irrelevant, it is more stable to work, and performance is outstanding during low cruise, and overload capacity is strong, but also exist starting performance relatively poor, the shortcoming that frequency-converting speed-governing control system more complicated and price are more expensive.Asynchronous motor has different characteristics with permanent magnet synchronous motor, at present, when the user selects motor often the optimal performance according to motor select, it is corresponded to actual needs as far as possible, yet, because the different qualities of variety classes motor, the shortcoming of its existence still can't be avoided, therefore, when the multinomial excellent properties that needs the multiclass motor combined, present product obviously can't satisfy its demand.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of single stator to join two-spool three phase electric machine with two characteristics, this motor combines the characteristic of asynchronous machine and permagnetic synchronous motor, and its magnetic field intensity is big, starting torque is big, starting current is little, power factor is high.
The present invention is achieved through the following technical solutions: a kind of single stator with two characteristics is joined two-spool three phase electric machine, comprise a stator, a cage rotor and a synchronous rotor, two rotor inlines are placed on the machine shaft, stator is placed in two rotor peripheries, cage rotor is located at the machine shaft front end, synchronous rotor is located at the machine shaft tail end, and the relative distance between two rotors is 1.5～25mm in the axial direction.According to the electrical safety requirement of reality or the requirement of other safe insulation quarantine measures, the relative distance of two rotors on machine shaft can be regulated, but must satisfy the requirement of electrical safety requirement or other safe insulation quarantine measures.
Described synchronous rotor is the rare earth permanent magnet synchronous rotor, has reduced the iron loss and the copper loss of motor, has energy-conservation advantage.
On the described machine shaft, the cage rotor front end is provided with fore bearing, and fore bearing is fitted on the machine shaft, and the fore bearing front end is provided with the fore bearing enclosing cover; The synchronous rotor rear end is provided with rear bearing, and rear bearing is fitted on the machine shaft, and the rear bearing front end is provided with the rear bearing inner cap, and the rear bearing rear end is provided with rear bearing block, and the front side anchor ring and the rear bearing inner cap of rear bearing block join.
Also be provided with wavy spring between described fore bearing enclosing cover and the fore bearing; Be provided with back-up ring between described rear bearing and the rear bearing block.
Described stator front end is provided with front end housing, and the stator rear end is provided with rear end cap, and front end housing is fixedlyed connected with stator by screw respectively with rear end cap.
The rear end of described rear end cap also is provided with the blower fan that motor radiating is used, and is connected by screw between the blower fan and the coaxial setting of machine shaft, blower fan and rear end cap; The blower fan top is provided with terminal box.
Described front end housing bottom and rear end cap bottom are respectively equipped with and make things convenient for motor that the footing hole of usefulness is installed.
When the single stator that originally has two characteristics is joined two-spool three phase electric machine operation, its operation principle is: three-phase symmetric winding feeds the three-phase symmetrical alternating current, to produce rotating magnetic field in the space, this magnetic field intercepts cage rotor conductor, in rotor, produce induced electromotive force and induced current, and cage rotor is to be lower than the rotating magnetic field synchronous speed, to be rotated with rotating magnetic field synchronous speed equidirectional; And the rare earth permanent magnet synchronous rotor produces the stationary magnetic field, and this moment, the rare earth permanent magnet synchronous rotor can not rotate, and by cage rotor rotating speed was promoted, and then rare earth permanent magnet synchronous rotor pull-in step rotating speed was rotated.
The present invention has following advantageous effect with respect to prior art:
(1) this three phase electric machine adopts single stator to join the birotor technology of a cage rotor and a rare earth permanent magnet synchronous rotor, this three phase electric machine combines the performance of asynchronous motor and permanent magnet synchronous motor, have that magnetic field intensity is big, starting torque is big, starting current is little, in light weight, efficient and power factor height, energy-conservation, advantage such as noise is low, operate steadily, the life-span is long, no matter make motor that good performance performance all be arranged under low speed or fast state.
(2) this three phase electric machine is simple in structure, volume is little, in light weight, make to safeguard also conveniently, (as lathe etc.) or other industry can obtain using very widely therefore in the industrial equipment field, have very big market potential.
Description of drawings
Fig. 1 is the structural representation of this three phase electric machine.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
A kind of single stator with two characteristics of present embodiment is joined two-spool three phase electric machine, its structure as shown in Figure 1, comprise a stator 9, a cage rotor 10 and a synchronous rotor 11, two rotor inlines are placed on the machine shaft 1, stator 9 is placed in two rotor peripheries, cage rotor 10 is located at machine shaft 1 front end, and synchronous rotor 11 is located at machine shaft 1 tail end, and the relative distance between two rotors is 1.5～25mm in the axial direction.According to the electrical safety requirement of reality or the requirement of other safe insulation quarantine measures, the relative distance of two rotors on machine shaft can be regulated, but must satisfy the requirement of electrical safety requirement or other safe insulation quarantine measures.
Synchronous rotor 11 is the rare earth permanent magnet synchronous rotor, has reduced the iron loss and the copper loss of motor, has energy-conservation advantage.
On the machine shaft 1, cage rotor 10 front ends are provided with fore bearing 7, and fore bearing 7 is fitted on the machine shaft 1, and fore bearing 7 front ends are provided with fore bearing enclosing cover 3; Synchronous rotor 11 rear ends are provided with rear bearing 17, and rear bearing 17 is fitted on the machine shaft 1, and rear bearing 17 front ends are provided with rear bearing inner cap 12, and rear bearing 17 rear ends are provided with rear bearing block 13, and the front side anchor ring and the rear bearing inner cap 12 of rear bearing block 13 join.
Also be provided with wavy spring 5 between fore bearing enclosing cover 3 and the fore bearing 7; Be provided with back-up ring 18 between rear bearing 17 and the rear bearing block 13.
Stator 9 front ends are provided with front end housing 8, and stator 9 rear ends are provided with rear end cap 19, and front end housing 8 is fixedlyed connected with stator 9 by screw respectively with rear end cap 19.
The rear end of rear end cap 19 also is provided with the blower fan 16 that motor radiating is used, and is connected by screw between the blower fan 16 and machine shaft 1 coaxial setting, blower fan 16 and rear end cap 19; Blower fan 16 tops are provided with terminal box 14.
Front end housing 8 bottoms and rear end cap 19 bottoms are respectively equipped with and make things convenient for motor that the footing hole of usefulness is installed.
When single stator that present embodiment has two characteristics is joined two-spool three phase electric machine operation, its operation principle is: three-phase symmetric winding feeds the three-phase symmetrical alternating current, to produce rotating magnetic field in the space, the conductor of this magnetic field intercepts cage rotor 10, in rotor, produce induced electromotive force and induced current, and cage rotor 10 is to be lower than the rotating magnetic field synchronous speed, to be rotated with rotating magnetic field synchronous speed equidirectional; And producing the stationary magnetic field as the rare earth permanent magnet synchronous rotor of synchronous rotor 11, this moment, the rare earth permanent magnet synchronous rotor can not rotate, and by cage rotor 10 rotating speed was promoted, and then rare earth permanent magnet synchronous rotor pull-in step rotating speed was rotated.
As mentioned above, just can realize the present invention preferably, the foregoing description is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (7)
1. the single stator with two characteristics is joined two-spool three phase electric machine, it is characterized in that, comprise a stator, a cage rotor and a synchronous rotor, two rotor inlines are placed on the machine shaft, stator is placed in two rotor peripheries, cage rotor is located at the machine shaft front end, and synchronous rotor is located at the machine shaft tail end, and the relative distance between two rotors is 1.5～25mm in the axial direction.
2. join two-spool three phase electric machine according to the described a kind of single stator of claim 1, it is characterized in that described synchronous rotor is the rare earth permanent magnet synchronous rotor with two characteristics.
3. join two-spool three phase electric machine according to the described a kind of single stator with two characteristics of claim 1, it is characterized in that on the described machine shaft, the cage rotor front end is provided with fore bearing, fore bearing is fitted on the machine shaft, and the fore bearing front end is provided with the fore bearing enclosing cover; The synchronous rotor rear end is provided with rear bearing, and rear bearing is fitted on the machine shaft, and the rear bearing front end is provided with the rear bearing inner cap, and the rear bearing rear end is provided with rear bearing block, and the front side anchor ring and the rear bearing inner cap of rear bearing block join.
4. join two-spool three phase electric machine according to the described a kind of single stator of claim 3, it is characterized in that, also be provided with wavy spring between described fore bearing enclosing cover and the fore bearing with two characteristics; Be provided with back-up ring between described rear bearing and the rear bearing block.
5. join two-spool three phase electric machine according to the described a kind of single stator with two characteristics of claim 1, it is characterized in that described stator front end is provided with front end housing, the stator rear end is provided with rear end cap, and front end housing is fixedlyed connected with stator by screw respectively with rear end cap.
6. join two-spool three phase electric machine according to the described a kind of single stator of claim 5 with two characteristics, it is characterized in that, the rear end of described rear end cap also is provided with the blower fan that motor radiating is used, and is connected by screw between the blower fan and the coaxial setting of machine shaft, blower fan and rear end cap; The blower fan top is provided with terminal box.
7. join two-spool three phase electric machine according to the described a kind of single stator with two characteristics of claim 5, it is characterized in that, described front end housing bottom and rear end cap bottom are respectively equipped with and make things convenient for motor that the footing hole of usefulness is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010502004 CN101958617A (en) | 2010-09-30 | 2010-09-30 | Double-characteristic three-phase motor with matching of double rotors and single stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010502004 CN101958617A (en) | 2010-09-30 | 2010-09-30 | Double-characteristic three-phase motor with matching of double rotors and single stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101958617A true CN101958617A (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010502004 Pending CN101958617A (en) | 2010-09-30 | 2010-09-30 | Double-characteristic three-phase motor with matching of double rotors and single stator |
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| CN (1) | CN101958617A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056458A1 (en) * | 2011-10-21 | 2013-04-25 | Dien Ghing-Hsin | Electric motor |
| CN105987014A (en) * | 2015-01-29 | 2016-10-05 | 沈阳兴华航空电器有限责任公司 | Single-tier short-range alternating-current tubular axial-flow fan |
| CN106253615A (en) * | 2016-08-26 | 2016-12-21 | 广东威灵电机制造有限公司 | Motor |
| CN108923606A (en) * | 2018-10-08 | 2018-11-30 | 株洲联诚集团控股股份有限公司 | A kind of harmony locomotive traction blower asynchronous starting permasyn morot |
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| CN2122446U (en) * | 1992-06-27 | 1992-11-18 | 北京市西城区新开通用试验厂 | Asynchronous induction started rare-earth permanent-magnetizm motor |
| CN2132330Y (en) * | 1992-05-29 | 1993-05-05 | 王玉成 | Composite rotor AC asynchronous motor |
| CN2662524Y (en) * | 2003-11-27 | 2004-12-08 | 盘锦辽河油田恒泰利建安工程有限公司 | Composite rotor high starting torque induction motor |
| CN2689578Y (en) * | 2004-03-28 | 2005-03-30 | 江允良 | AC stepless speed-variable electric motors |
| US20080036322A1 (en) * | 2005-04-06 | 2008-02-14 | Bayerische Motoren Werke Aktiengesellschaft | Electrical Machine and Method for Setting the Field and Armature of a Permanently Excited Electrical Machine |
| CN201821237U (en) * | 2010-09-30 | 2011-05-04 | 广州数控设备有限公司 | Double-characteristic three-phase motor provided with single stator and double rotors |
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2010
- 2010-09-30 CN CN 201010502004 patent/CN101958617A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132330Y (en) * | 1992-05-29 | 1993-05-05 | 王玉成 | Composite rotor AC asynchronous motor |
| CN2122446U (en) * | 1992-06-27 | 1992-11-18 | 北京市西城区新开通用试验厂 | Asynchronous induction started rare-earth permanent-magnetizm motor |
| CN2662524Y (en) * | 2003-11-27 | 2004-12-08 | 盘锦辽河油田恒泰利建安工程有限公司 | Composite rotor high starting torque induction motor |
| CN2689578Y (en) * | 2004-03-28 | 2005-03-30 | 江允良 | AC stepless speed-variable electric motors |
| US20080036322A1 (en) * | 2005-04-06 | 2008-02-14 | Bayerische Motoren Werke Aktiengesellschaft | Electrical Machine and Method for Setting the Field and Armature of a Permanently Excited Electrical Machine |
| CN201821237U (en) * | 2010-09-30 | 2011-05-04 | 广州数控设备有限公司 | Double-characteristic three-phase motor provided with single stator and double rotors |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056458A1 (en) * | 2011-10-21 | 2013-04-25 | Dien Ghing-Hsin | Electric motor |
| CN105987014A (en) * | 2015-01-29 | 2016-10-05 | 沈阳兴华航空电器有限责任公司 | Single-tier short-range alternating-current tubular axial-flow fan |
| CN106253615A (en) * | 2016-08-26 | 2016-12-21 | 广东威灵电机制造有限公司 | Motor |
| CN106253615B (en) * | 2016-08-26 | 2019-01-08 | 广东威灵电机制造有限公司 | Motor |
| CN108923606A (en) * | 2018-10-08 | 2018-11-30 | 株洲联诚集团控股股份有限公司 | A kind of harmony locomotive traction blower asynchronous starting permasyn morot |
| CN108923606B (en) * | 2018-10-08 | 2024-03-15 | 株洲联诚集团控股股份有限公司 | Asynchronous starting permanent magnet synchronous motor for harmonious locomotive traction fan |
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Application publication date: 20110126 |