CN202586681U - Brushless double feeding asynchronous motor - Google Patents
Brushless double feeding asynchronous motor Download PDFInfo
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- CN202586681U CN202586681U CN 201220204907 CN201220204907U CN202586681U CN 202586681 U CN202586681 U CN 202586681U CN 201220204907 CN201220204907 CN 201220204907 CN 201220204907 U CN201220204907 U CN 201220204907U CN 202586681 U CN202586681 U CN 202586681U
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Abstract
The utility model discloses a brushless double feeding asynchronous motor. The brushless double feeding asynchronous motor comprises a rotating shaft. A rotor is provided on the rotating shaft. The outside of the rotator is provided with a stator. The stator comprises a stator core. A tangential direction of an inner ring surface of the stator core is provided with three annular stator three-phase control winding wire ducts. Stator three-phase control windings are provided in the stator three-phase control winding wire ducts. An axial direction of the inner ring surface of the stator core is provided with a plurality of linear stator three-phase power winding wire ducts. Stator three-phase power windings are provided in the stator three-phase power winding wire ducts. An annular rotor three-phase control winding wire duct corresponding to the stator three-phase control winding wire duct is provided on each rotor core along the tangential direction. Rotor three-phase control windings are provided in the rotor three-phase control winding wire ducts. Linear type rotor three-phase power winding wire ducts are provided on the rotor core along the axial direction. Rotor three-phase power windings are provided in the rotor three-phase power winding wire ducts. The brushless double feeding asynchronous motor has high efficiency, little loss, a simple structure, and a small size.
Description
Technical field
The utility model relates to a kind of double fed asynchronous machine, the brushless double feed asynchronous machine of using in especially a kind of industrial and mining enterprises.
Background technology
The power winding of double feedback electric engine directly is connected with common frequency power network, and the control winding is connected with electrical network through frequency converter.The double feedback electric engine power factor can be regulated, speed-regulating range width.When near rated speed, moving, variable frequency power supply only need be given the power supply of control winding, and its capacity has reduced the cost of governing system on the one hand much smaller than the rated power of motor, has reduced the harmonic pollution to electrical network on the other hand.Therefore, there is the brush double feedback electric engine to be widely used in wind power generation and to exchange elevator system at present.But, there is the brush double feedback electric engine to have brush, be easy to generate mechanical breakdown, the maintenance of motor workload is big, and reliability is relatively poor, the also restricted shortcoming in application scenario.Non-brushing is the fundamental way that overcomes these shortcomings; But the wire casing of existing brushless dual-feed motor all is the linear pattern wire casing identical with rotor shaft direction; There is the electromagnetic coupled relation between control winding and the power winding, meeting induced potential and consumed power in the other side's winding, so the brushless dual-feed motor loss of existing structure is bigger; Efficient is lower, can not satisfy the requirement of practical applications.
Summary of the invention
The utility model is to the weak point of present prior art, proposes a kind of simple in structure, brushless double feed asynchronous machine that the high loss of efficient is little.
For realizing above-mentioned purpose; The brushless double feed asynchronous machine of the utility model comprises rotating shaft, is located at the rotor in the rotating shaft, and rotor is provided with stator outward; Described stator comprises stator core; The inner ring surface tangential direction of stator core is provided with the stator three-phase control winding wire slot of three annulars, is provided with stator three-phase control winding in the stator three-phase control winding wire slot, and the inner ring surface axial direction of stator core is provided with a plurality of rectilinear stator three phase power winding wire slots; Be provided with stator three phase power winding in the stator three phase power winding wire slot; Segmentation is provided with three rotor cores on the said rotor, and tangential direction is equipped with a rotor three-phase with the corresponding annular of stator three-phase control winding wire slot and controls winding wire slot in said each rotor core, is provided with rotor three-phase control winding in the rotor three-phase control winding wire slot; In axial direction be provided with linear rotor three-phase power winding wire slot in the rotor core, be provided with rotor three-phase power winding in the rotor three-phase power winding wire slot.
Described stator three phase power winding and stator three-phase control winding be mutual vertical distribution in the space; Described rotor three-phase power winding and the mutual vertical distribution of rotor three-phase control winding; Leave air gap between described three rotor cores.
Beneficial effect:
(1), the utility model utilizes stator to control winding and rotor is controlled the transformer that winding constitutes, and has realized that reversible frequency converter is connected with the brushless of rotor power winding, has improved the reliability of motor, has reduced maintenance workload;
(2), wound asynchronous motor subsystem and the shared iron core of transformer subsystem in the utility model brushless double feed asynchronous machine, therefore, electric machine structure is simple, volume is less;
(3), this bright stator three phase power winding and stator three-phase control winding in the space mutual vertical distribution, do not have the electromagnetic coupled relation between them, can be in the other side's winding induced potential and consumed power; Rotor three-phase power winding and rotor three-phase control winding is the mutual vertical distribution in the space also, does not also have the electromagnetic coupled relation between them, can be in the other side's winding induced potential and consumed power; Therefore electric efficiency is high; Loss is little, and it is simple in structure, and volume is less.
Description of drawings
Fig. 1 is the vertical profile cross section structure figure of the utility model brushless double feed asynchronous machine.
Fig. 2 is the stator core vertical section structure figure of the utility model brushless double feed asynchronous machine.
Fig. 3 is the rotor structure figure of the utility model brushless double feed asynchronous machine.
Fig. 4 is the stator power winding coil of the utility model and the spatial distribution map of a stator control winding coil.
Fig. 5 is the control winding circuit figure of utility model brushless double feed asynchronous machine.
Among the figure: the 1-stator core; 2-stator three phase power winding; 3-stator three-phase control winding wire slot; 3-1-stator A controls winding wire slot mutually; 3-2-stator B controls winding wire slot mutually; 3-3-stator C controls winding wire slot mutually; 4-stator three-phase control winding; 5-rotor three-phase control winding wire slot; 5-1-rotor a controls winding wire slot mutually; 5-2-rotor b controls winding wire slot mutually; 5-3-rotor c controls winding wire slot mutually; 6-rotor three-phase control winding; 7-rotor three-phase power winding; The 8-rotor core; The 8-1-a rotor core; The 8-2-b rotor core; The 8-3-c rotor core; The 9-rotating shaft; 10-stator three phase power winding wire slot; 11-rotor three-phase power winding wire slot; The 12-frequency converter.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further description:
Fig. 1, Fig. 2 and shown in Figure 3; The brushless double feed asynchronous machine of the utility model comprises rotating shaft 9; Be located at the rotor in the rotating shaft 9, rotor is provided with stator outward, and described stator comprises stator core 1; The inner ring surface tangential direction of stator core 1 is provided with the stator three-phase control winding wire slot 3 of three annulars; Be provided with stator three-phase control winding 4 in the stator three-phase control winding wire slot 3, the inner ring surface axial direction of stator core 1 is provided with a plurality of rectilinear stator three phase power winding wire slots 10, is provided with stator three phase power winding 2 in the stator three phase power winding wire slot 10; Wherein stator core 1 inner surface has 36 stator three phase power winding wire slots 10 and 3 stator three-phase control winding wire slots 3, and stator three phase power winding 2 and stator three-phase control winding 4 be mutual vertical distribution in the space; Segmentation is provided with three rotor cores 8 on the said rotor; Rotor core 8 is built up by the thick silicon steel sheet of 0.3mm; Leave air gap between described three rotor cores 8,, tangential direction is equipped with a rotor three-phase with stator three-phase control winding wire slot 3 corresponding annulars and controls winding wire slot 5 in said each rotor core 8; Be provided with rotor three-phase control winding 6 in the rotor three-phase control winding wire slot 5; In axial direction be provided with linear rotor three-phase power winding wire slot 11 in the rotor core 8, be provided with rotor three-phase power winding 7 in the rotor three-phase power winding wire slot 11, rotor three-phase power winding 7 and the also mutual vertical distribution of rotor three-phase control winding 6.
As shown in Figure 3, rotor core 8 is made up of a rotor core 8-1, b rotor core 8-2 and the c rotor core 8-3 three iron leg stems that are set in successively in the rotating shaft 9.Rotor three-phase power winding wire slot 11 in the said rotor core 8 and rotor three-phase control winding wire slot 5; Rotor three-phase power winding wire slot 11 is linear patterns; Its direction is identical with rotating shaft 9 directions; And the rotor three-phase power winding wire slot 11 on every section rotor core post is along the alignment of rotating shaft 9 directions, and rotor three-phase power winding 7 is placed in the above-mentioned rotor three-phase power winding wire slot 11, and the effective edge of said each rotor three-phase power winding 7 is through above-mentioned three-stage rotor unshakable in one's determination 8; Stator three-phase control winding wire slot 3 is controlled winding wire slot 3-1, stator B mutually by stator A and is controlled winding wire slot 3-2 and stator C mutually to control three of winding wire slot 3-3 mutually be that the circular ring type wire casing in the center of circle is formed with rotating shaft 9 centers; Wherein stator A controls winding wire slot 3-1 mutually and controls winding wire slot 5-1 formation concentric groove structure mutually with rotor a; Stator B controls winding wire slot 3-2 mutually and controls winding wire slot 5-2 formation concentric groove structure mutually with rotor b, and stator C controls winding wire slot 3-3 mutually and controls winding wire slot 5-3 formation concentric groove structure mutually with rotor c; Said rotor three-phase control winding wire slot 5 is controlled winding wire slot 5-1, rotor b mutually by rotor a and is controlled winding wire slot 5-2 and rotor c mutually to control three of winding wire slot 5-3 mutually be that the circular ring type wire casing in the center of circle is formed with rotating shaft 9 centers; Its rotor a controls the surperficial iron core that winding wire slot 5-1 is positioned at above-mentioned a rotor core 8-1 middle part mutually; Rotor b controls the surperficial iron core that winding wire slot 5-2 is positioned at above-mentioned b rotor core 8-2 middle part mutually, and rotor c controls the surperficial iron core that winding wire slot 5-3 is positioned at above-mentioned c rotor core 8-3 middle part mutually; Said rotor three-phase control winding 6 is circular ring type structures, and three concentrated windings are arranged, and is placed in respectively in said three rotor three-phase control winding wire slot 5; The notch that said stator A controls winding wire slot mutually aligns with the notch that rotor a controls winding wire slot mutually; The notch that stator B controls winding wire slot mutually aligns with the notch that rotor b controls winding wire slot mutually, and the notch that stator C controls winding wire slot mutually aligns with the notch that rotor c controls winding wire slot mutually.
By shown in Figure 4, the plane that the plane that stator three phase power winding 2 coils constitute and stator three-phase control winding 4 coils constitute is mutual vertical distribution in the space, does not exist electric coupling to concern between them, can be in the other side's winding induced potential and consumed power.Same, the plane that the plane that rotor three-phase power winding 7 coils constitute and rotor three-phase control winding 6 coils constitute is mutual vertical distribution in the space, does not also exist electric coupling to concern between them, can be in the other side's winding induced potential and consumed power.
By Fig. 5; Rotor three-phase power winding 7 adopts star-like the connection respectively with rotor three-phase control winding 6; And its head end is corresponding to be connected, and stator three-phase control winding 4 also adopts star-like connection, and its head end is connected with frequency converter 12; When the change frequency converter is exported to the electric voltage frequency of stator three-phase control winding 4; This frequency conversion voltage passes to rotor three-phase power winding 7 through transformer, and described transformer is that stator three-phase control winding 4 constitutes with rotor three-phase control winding 6, so just can regulate the frequency and the amplitude of rotor three-phase power winding 7 additional power sources.
Operation principle: the brushless double feed asynchronous machine of the utility model is made up of wound asynchronous motor subsystem and transformer subsystem.Wherein, stator power winding and rotor three-phase power winding 7 have constituted the wound asynchronous motor subsystem, realize the conversion of electromechanical energy; Stator control winding and rotor control winding have constituted the transformer subsystem, utilize transformer principle to realize that rotor three-phase power winding 7 adds the brushless regulatory function of field power supply frequency and amplitude.
When the brushless double feed asynchronous machine double-fed of the utility model was moved, stator three phase power winding 2 directly was connected with common frequency power network, and stator three-phase control winding 4 is connected with electrical network through frequency converter 12.When this frequency converter 12 of change is exported to the electric voltage frequency of stator three-phase control winding 4; This frequency conversion voltage passes to rotor three-phase power winding 7 through transformer; Described transformer is that stator three-phase control winding 3 constitutes with rotor three-phase control winding 6; So just can regulate, thereby reach the purpose of controlling motor speed, power factor the frequency and the amplitude of rotor three-phase power winding 7 additional power sources.
Claims (3)
1. brushless double feed asynchronous machine; Comprise rotating shaft (9), be located at the rotor in the rotating shaft (9); Rotor is provided with stator outward; It is characterized in that: described stator comprises stator core (1); The inner ring surface tangential direction of stator core (1) is provided with the stator three-phase control winding wire slot (3) of three annulars, is provided with stator three-phase control winding (4) in the stator three-phase control winding wire slot (3), and the inner ring surface axial direction of stator core (1) is provided with a plurality of rectilinear stator three phase power winding wire slots (10); Be provided with stator three phase power winding (2) in the stator three phase power winding wire slot (10); Segmentation is provided with three rotor cores (8) on the said rotor, and said each rotor core (8) is gone up tangential direction and is equipped with a rotor three-phase control winding wire slot (5) with the corresponding annular of stator three-phase control winding wire slot (3), is provided with rotor three-phase in the rotor three-phase control winding wire slot (5) and controls winding (6); In axial direction be provided with linear rotor three-phase power winding wire slot (11) in the rotor core (8), be provided with rotor three-phase power winding (7) in the rotor three-phase power winding wire slot (11).
2. brushless double feed asynchronous machine according to claim 1 is characterized in that: described stator three phase power winding (2) and stator three-phase control winding (4) be mutual vertical distribution in the space; Described rotor three-phase power winding (7) and rotor three-phase control winding (6) be vertical distribution each other.
3. brushless double feed asynchronous machine according to claim 1 is characterized in that: leave air gap between described three rotor cores (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220204907 CN202586681U (en) | 2012-05-09 | 2012-05-09 | Brushless double feeding asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220204907 CN202586681U (en) | 2012-05-09 | 2012-05-09 | Brushless double feeding asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586681U true CN202586681U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220204907 Expired - Fee Related CN202586681U (en) | 2012-05-09 | 2012-05-09 | Brushless double feeding asynchronous motor |
Country Status (1)
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| CN (1) | CN202586681U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624178A (en) * | 2012-05-09 | 2012-08-01 | 中国矿业大学 | Brushless double-fed asynchronous motor |
| CN104158363A (en) * | 2014-08-12 | 2014-11-19 | 南车株洲电力机车研究所有限公司 | Double-fed induction generator model |
| CN109980812A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of rotor structure and electromagnetic bearing and electromagnetic loading device |
-
2012
- 2012-05-09 CN CN 201220204907 patent/CN202586681U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624178A (en) * | 2012-05-09 | 2012-08-01 | 中国矿业大学 | Brushless double-fed asynchronous motor |
| CN104158363A (en) * | 2014-08-12 | 2014-11-19 | 南车株洲电力机车研究所有限公司 | Double-fed induction generator model |
| CN109980812A (en) * | 2019-03-27 | 2019-07-05 | 西安交通大学 | A kind of rotor structure and electromagnetic bearing and electromagnetic loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140509 |