CN2909671Y - Mixed pole type brushless double-feed AC dynamo - Google Patents
Mixed pole type brushless double-feed AC dynamo Download PDFInfo
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- CN2909671Y CN2909671Y CNU2006201160672U CN200620116067U CN2909671Y CN 2909671 Y CN2909671 Y CN 2909671Y CN U2006201160672 U CNU2006201160672 U CN U2006201160672U CN 200620116067 U CN200620116067 U CN 200620116067U CN 2909671 Y CN2909671 Y CN 2909671Y
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Abstract
The utility model is a mixed pole type, brushless double-fed AC power motor. The rotor adopts a short-circuited winding in concentric type structure or a magnetoresistive structure, without slip ring and electric brush. The stator around of brushless rotor is equipped with two series of independent windings, which are power winding and control winding. Power winding is connected with the high-voltage power supplies which have stable voltage and frequency. Control winding is connected with the low-voltage control power supplies through controller. By changing the frequency, amplitude, and phase via controller, the utility model can control the rotational speed and running state of motors. Magnetic field modulation principle-based, via the special design of rotor structure, the utility model adds control winding which pole quantity is different from power winding, thereby solving the problem of speed regulation control and brushless problems that are produced when large-power high-voltage motors are using small-power low-voltage frequency converter. As a result, the cost of speed control system of motors is largely decreased and the reliability is also improved a lot.
Description
Technical field
The utility model relates to a kind of alternating current machine, particularly relates to a kind of mixed pole type brushless double-fed alternating current machine.
Background technology
Existing brushless double feed alternating current machine mainly contains three kinds of structural shapes.A kind of tandem formula brushless double feed alternating current machine of forming by two conventional wound type induction motors, the stator winding of two motors links to each other with power supply respectively, rotor coaxial connects and two rotor windings connect with phase sequence or negative-phase sequence, its shortcoming is need to adopt two motors, and volume is big and cost is higher.Second kind is that above-mentioned two motors are merged into a motor, on the stator of motor, be placed with two different cover windings of two cover numbers of poles, and on rotor, be placed with equally and the corresponding two cover windings of stator winding number of poles, its advantage is that two motors are merged into a motor, reduce to some extent than first kind of structural shape volume, shortcoming is rotor winding structure and wiring more complicated.The third is with rotor winding simplified structure on the basis of above-mentioned second kind of structural shape.Chinese patent discloses a kind of utility model patent " brushless dual-feed motor of remodeling " (patent No. ZL02294622.5), stator power winding and control winding common stator groove, the power winding places the bottom of groove, one section of the rotor winding by end ring sealing connection, and the other end connects by " concentric type " winding construction, and each outer short-circuited coil of organizing the concentric type winding has adopted the structure with public sliver and end ring.Its advantage is that the structure of rotor winding and manufacturing process are simplified, shortcoming is only to have proposed a kind of rotor winding structure with public sliver and end ring, theory analysis and experiment show, this kind has the rotor winding structure of public sliver and end ring, is unfavorable for that the rotor winding current produces the modulating action in magnetic field to the stator winding electric current; Leakage reactance is bigger because the number of turn of stator power winding is more simultaneously, and the bottom that places it in stator slot has further increased slot leakage reactance, has reduced the power factor (PF) of motor.
Summary of the invention
For the defective and the raising motor performance that remedy above-mentioned existing brushless dual-feed motor, the utility model provides a kind of further simplification rotor structure and improves the mixed pole type brushless double-fed alternating current machine of runnability and reliability.
The utility model mixes pole type brushless double-fed alternating current machine, comprise stator and rotor, described stator has 2 to overlap independently winding and be respectively power winding and control winding, described power winding is connected with power supply, described control winding connects a controller, and this controller is connected with the control power supply, and described rotor is no slip-ring brush structure, change frequency, amplitude and the phase place of described control winding current by described controller, control rotating speed of motor and running status.
The utility model mixes pole type brushless double-fed alternating current machine, and described power winding has the 2p utmost point, and described control winding has the 2q utmost point, and the number of poles of power winding and control winding can not equate that its pass is: 2p＞2q+2.Power winding and control winding common stator groove, the control winding places the bottom of groove, to reduce the slot leakage reactance of power winding.
The utility model mixes pole type brushless double-fed alternating current machine, described controller is the stationary power converting means that is made of electronic power switch device and control circuit thereof, be made up of two two way convertors and control unit, two two way convertors are interconnected, and control unit connects two way convertor respectively.
The utility model mixes pole type brushless double-fed alternating current machine, and described rotor adopts the rotor with (p+q) group concentric type winding, and every group of concentric type winding is made of single turn or the multiturn short-circuited coil that several have different spans.
The utility model mixes pole type brushless double-fed alternating current machine, and described rotor also can adopt the reluctance rotor of (p+q) individual salient-pole structure or (p+q) reluctance rotor or (p+q) the mixed rotor structure that combines with reluctance rotor of group concentric type winding of the axial lamination of group.
The beneficial effects of the utility model are: based on the magnetic field modulation principle by the rotor structure of particular design with on stator, increased the control winding different with power winding number of poles, the power winding links to each other with the High Voltage Power Supply power supply with fixed voltage and frequency, the control winding links to each other with low-voltage control power supply by controller, change frequency, amplitude and the phase place of controlling winding current by controller, can control rotating speed of motor and running status.Solved speed regulating control and the non-brushing problem that large power high voltage motor adopts smaller power low-voltage frequency converter from motor internal, greatly reduced the motor speed regulation system cost and improved reliability.The utility model mixes pole type brushless double-fed alternating current machine, not only the rotor winding structure of original brushless dual-feed motor has further been simplified and improved the rotor winding stator winding electric current has been produced the modulation function in magnetic field, and expanded as the hybrid multiple rotor structure that salient pole reluctance type, axial lamination reluctance type and wound rotor combine in reluctance rotor by single phase-wound rotor structure.Simultaneously, change stator power winding into the groove top by the stator slot bottom, reduced the leakage reactance of power winding, thereby improved motor performance.
Description of drawings
Fig. 1 mixes pole type brushless double-fed alternating current machine schematic diagram for the utility model;
Fig. 2 mixes first kind of rotor structure schematic diagram of pole type brushless double-fed alternating current machine for the utility model;
Fig. 3 mixes second kind of rotor structure schematic diagram of pole type brushless double-fed alternating current machine for the utility model;
Fig. 4 mixes the third rotor structure schematic diagram of pole type brushless double-fed alternating current machine for the utility model;
Fig. 5 mixes the 4th kind of rotor structure schematic diagram of pole type brushless double-fed alternating current machine for the utility model;
Fig. 6 mixes pole type brushless double-fed AC motor control theory diagram for the utility model.
Embodiment
For further setting forth the utility model, below in conjunction with embodiment the utility model is mixed pole type brushless double-fed alternating current machine and be described in more detail.
Fig. 1 mixes pole type brushless double-fed alternating current machine schematic diagram for the utility model, and wherein 1 is motor stator, and 2 is rotor, and 3 is controller, and 4 is power winding power supply, 5 control winding power supplies.Placed 2 in the core slots in motor stator 1 and overlapped independently symmetric winding, be respectively outlet terminal A among Fig. 1
1, B
1, C
1The power winding of expression is used A
2, B
2, C
2The control winding of expression.The annexation of winding is: the outlet terminal A of power winding
1, B
1, C
1Be connected with power supply 4; The outlet terminal A of control winding
2, B
2, C
2By controller 3, be connected with power supply 5.
Rotor 2 usefulness concentric type cage-type rotors are represented among Fig. 1, are a kind of signal, in fact are not limited to this kind rotor structure mode.Fig. 2, Fig. 3, Fig. 4 and Fig. 5 mix pole type brushless double-fed alternating current machine different rotor structure schematic diagram for the utility model, wherein Fig. 2 is the rotor with concentric type short-circuited winding, has (p+q) group concentric type winding, single turn or multiturn short-circuited coil that every group of concentric type winding has different spans by several (its quantity depends on the rotor number) constitute, and do not have the common winding limit between each concentric type short-circuited coil; Fig. 3 is the reluctance rotor with salient-pole structure, has (p+q) individual salient pole; Fig. 4 has (p+q) individual axial laminted pole for adopting the reluctance rotor of axial lamination; The mixed rotor of Fig. 5 for adopting the concentric type winding to combine with magnetoresistive structures, the magnetic barrier with (p+q) individual group of concentric type winding and some, wherein 9 is the sliver of concentric type winding, 10 for connecting the winding overhang of sliver; 11 magnetic that constitute for non-magnet_conductible material hinder, and with the magnetic flux path in the restrict rotor iron core, play the effect of reluctance rotor.The acting in conjunction of above-mentioned different structure rotor is that the magnetic field of stator power winding with different numbers of poles and the generation of control winding current is modulated, and produces needed rotating magnetic field and realizes energy converting between mechanical.
Controller 3 is the stationary power converting means that are made of electronic power switch device and control circuit thereof, can realize the two-way changing of interchange-AC/DC voltage and frequency, the voltage of the fixed frequency that the control power supply can be provided is converted to the needed frequency of control winding, amplitude and the adjustable alternating voltage of phase place; The voltage transitions of frequency, amplitude and the phase change that also the control winding can be exported is the voltage of fixed frequency simultaneously, realizes the energy feedback.
The theory diagram of controller is made up of two way convertor 6,7 and control unit 8 as shown in Figure 6.Do motor operation and be operated in synchronous speed when following when motor, two way convertor 6 changes Electric Machine Control winding output voltage into direct current with the frequency alternating current relevant with motor speed as rectifier; And two way convertor 7 with the direct current transformation alternating current identical with the power supply frequency of 6 outputs, feeds back to power supply with the electric energy of controlling winding output as inverter.When motor speed is higher than with leg speed, need be to control winding input electric energy, this moment, two way convertor 6 and 7 function exchanged, two way convertor 7 as rectifier and two way convertor 6 as inverter, the alternating current that two way convertor 7 will be controlled power supply to be provided is converted to direct current, supplies with the control winding by inverter 6 and then the alternating current that is converted to required frequency, amplitude and phase place then.When motor when the generator, two way convertor 6 and 7 power flow direction are just opposite with above-mentioned motor operational mode.The function of control unit 8 is according to the different running status power flow directions and the requirement of controlling winding power supply or output AC voltage of motor, to control the mode of operation and the Power Conversion characteristic of two way convertor 6 and 7.
Claims (7)
1, a kind of mixed pole type brushless double-fed alternating current machine, comprise stator and rotor, it is characterized in that described stator (1) has 2 to overlap independently winding and be respectively power winding and control winding, described power winding is connected with power supply (4), described control winding connects a controller (3), this controller is connected with control power supply (5), and described rotor (2) is no slip-ring brush structure.
2, mixed pole type brushless double-fed alternating current machine according to claim 1, it is characterized in that described power winding has the 2p utmost point, described control winding has the 2q utmost point, the pass of the number of poles of power winding and control winding is: 2p＞2q+2, power winding and control winding common stator groove, the control winding places the bottom of groove.
3, mixed pole type brushless double-fed alternating current machine according to claim 2, it is characterized in that described controller (3) is the stationary power converting means that is made of electronic power switch device and control circuit thereof, form by two two way convertors (6,7) and control unit (8), two two way convertors (6,7) are interconnected, and control unit (8) connects two way convertor (6,7) respectively.
4, mixed pole type brushless double-fed alternating current machine according to claim 3 is characterized in that described rotor adopts the rotor with p+q group concentric type winding, and every group of concentric type winding is made of single turn or the multiturn short-circuited coil that several have different spans.
5, mixed pole type brushless double-fed alternating current machine according to claim 3 is characterized in that described rotor adopts the reluctance rotor of p+q salient-pole structure.
6, mixed pole type brushless double-fed alternating current machine according to claim 3 is characterized in that described rotor adopts p+q to organize the reluctance rotor of axial lamination.
7, mixed pole type brushless double-fed alternating current machine according to claim 3 is characterized in that the mixed rotor structure that described rotor adopts p+q group concentric type winding to combine with reluctance rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201160672U CN2909671Y (en) | 2006-05-25 | 2006-05-25 | Mixed pole type brushless double-feed AC dynamo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201160672U CN2909671Y (en) | 2006-05-25 | 2006-05-25 | Mixed pole type brushless double-feed AC dynamo |
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| Publication Number | Publication Date |
|---|---|
| CN2909671Y true CN2909671Y (en) | 2007-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2006201160672U Expired - Fee Related CN2909671Y (en) | 2006-05-25 | 2006-05-25 | Mixed pole type brushless double-feed AC dynamo |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005843A (en) * | 2010-11-21 | 2011-04-06 | 沈阳工业大学 | Brushless double-fed wind driven generator and method for controlling brushless double-fed wind driven generating system |
| CN102097913A (en) * | 2009-12-14 | 2011-06-15 | 徐隆亚 | Double-fed brushless motor rotor and manufacturing method thereof |
| CN102118092A (en) * | 2011-01-26 | 2011-07-06 | 广东华拿东方能源有限公司 | Composite-rotor brushless double-fed alternating current motor |
| CN102347648A (en) * | 2010-07-23 | 2012-02-08 | 通用电气公司 | High-power density and high efficiency non-permanent magnet electric machine |
| CN103166405A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Cage barrier spliced outer rotor stator double-winding alternating current motor and control method thereof |
| CN103166395A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Stator self-excitation synchronous motor with double cage barrier rotors and control method thereof |
-
2006
- 2006-05-25 CN CNU2006201160672U patent/CN2909671Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097913A (en) * | 2009-12-14 | 2011-06-15 | 徐隆亚 | Double-fed brushless motor rotor and manufacturing method thereof |
| CN102097913B (en) * | 2009-12-14 | 2013-07-31 | 徐隆亚 | Double-fed brushless motor rotor and manufacturing method thereof |
| CN106067712A (en) * | 2010-07-23 | 2016-11-02 | 通用电气公司 | High power density, high efficiency, non-permanent magnet motor |
| CN102347648A (en) * | 2010-07-23 | 2012-02-08 | 通用电气公司 | High-power density and high efficiency non-permanent magnet electric machine |
| CN106067712B (en) * | 2010-07-23 | 2019-01-22 | 通用电气公司 | High power density, high efficiency, non-permanent magnet motor |
| CN102005843B (en) * | 2010-11-21 | 2013-04-24 | 沈阳工业大学 | Brushless double-fed wind driven generator and method for controlling brushless double-fed wind driven generating system |
| CN102005843A (en) * | 2010-11-21 | 2011-04-06 | 沈阳工业大学 | Brushless double-fed wind driven generator and method for controlling brushless double-fed wind driven generating system |
| CN102118092A (en) * | 2011-01-26 | 2011-07-06 | 广东华拿东方能源有限公司 | Composite-rotor brushless double-fed alternating current motor |
| CN102118092B (en) * | 2011-01-26 | 2013-01-30 | 杨华 | Composite-rotor brushless double-fed alternating current motor |
| CN103166405A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Cage barrier spliced outer rotor stator double-winding alternating current motor and control method thereof |
| CN103166405B (en) * | 2013-03-29 | 2015-08-12 | 沈阳工业大学 | Cage hinders assembled outer rotor stator double winding alternating current machine and control method thereof |
| CN103166395B (en) * | 2013-03-29 | 2015-06-03 | 沈阳工业大学 | Stator self-excitation synchronous motor with double cage barrier rotors and control method thereof |
| CN103166395A (en) * | 2013-03-29 | 2013-06-19 | 沈阳工业大学 | Stator self-excitation synchronous motor with double cage barrier rotors and control method thereof |
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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: 20070606 Termination date: 20140525 |