CN1925277A - Alternating current synchronous motor based on three-phase rotary transformer technology, alternating current wound rotor motor and arrangements for speed regulation - Google Patents
Alternating current synchronous motor based on three-phase rotary transformer technology, alternating current wound rotor motor and arrangements for speed regulation Download PDFInfo
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- CN1925277A CN1925277A CNA2005100368866A CN200510036886A CN1925277A CN 1925277 A CN1925277 A CN 1925277A CN A2005100368866 A CNA2005100368866 A CN A2005100368866A CN 200510036886 A CN200510036886 A CN 200510036886A CN 1925277 A CN1925277 A CN 1925277A
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Abstract
This invention relates to alternating synchronous motor, alternating coil rotor motor and its adjusting device based on three phase rotation transducer in machine process and power electrical technique field, which comprises the following parts: three phase rotation transducer fixed on the motor socket inner axis or motor shell outer axis between static three phase alternating power and motor rotation rotor to send power to take place of original slide ring and brush. This invention alternating synchronous motor and its adjusting device realizes transducer speed adjusting.
Description
Technical field
The present invention relates to a kind of novel, brushless ac synchronous motor, ac wound rotor motor, belong to field of motor manufacturing.
Background technology
Early stage have brush, slip ring DC excitation synchronous alternating-current generator, a synchronous motor, brush, commutator DC generator, motor are arranged, brush, slip ring AC wire wound asynchronous motor are arranged, because of there being the reason of brush, slip ring, commutator, having all that maintenance load is big, poor reliability, the deficiency of electric spark is arranged, is a kind of type of progressively eliminating.
Existing brushless ac synchronous generator has been used in large quantities.Brushless ac synchronous generator primary structure, principle are, direct current produces size, the constant magnetic field of direction on the one cover direct current winding of installation on the stator is logical, the three-phase alternating current winding is installed on rotor, because rotor rotates with synchronous speed, epitrochanterian three-phase alternating current winding just induces three-phase alternating current, be the reverse power generation process of synchronous generator, three-phase alternating current obtains direct current through rectification, gives the power supply of rotor-exciting winding.But this technology can not be applied in the frequency control of autosynchronous motor, can only be applied in the part occasion that just transfers synchronous regime when autosynchronous motor starts near full speed by asynchronous winding to, because, stop or slow-speed of revolution situation under, epitrochanterian interchange three phase windings can not induce required three-phase alternating current, and the rotor-exciting winding also just can not produce the magnetic field of sufficient intensity.
Through looking into " Chinese patent information network ", discovery has several about exchanging the patent of phase-wound rotor rotor winding application converter technique, as, " the wound induction motor frequency changeable synchronous speed control method and the device patent No. are 85100546 ", " utilizing the frequency converter patent No. of piezoelectricity machine frequency control in the realization of low-voltage variable frequency technology is 03243102 ", " a kind of high power AC difference frequency speed regulating device patent No. is 90101360 ", " a kind of rotor variable-frequency adjusting controlled motor patent No. 96117559 ".These motors its both can synchronous operation, also can asynchronous operation, use speed governing than the Frequency Converter Control larger capacity motor of low capacity.After the control of conversion device is out of order, can control three phase windings by short circuit, motor then be operated in asynchronous mode, thereby the reliability of system is very high.It also has the operational efficiency height, the advantage that power factor is adjustable.Thereby be a kind of rising motor.But all do not relate to brushless, acyclic technology.
In " Chinese patent net " search " resolver ", find that resolver has some concrete application, remove is to be used to transmit the rotating shaft angle signal mainly, also found a patent " wound rotor motor is brushless, and the acyclic soft start speed device patent No. is 00224535 ", be used for rotor winding formula motor, mainly be made up of with the ghyristor circuit two parts that rotate synchronously with rotating shaft the outer voltage regulator circuit of machine, these two parts link together by the magnetic coupling of single-phase resolver.Do not find that three-phase rotary transformer is applied in ac synchronous motor, ac wound rotor motor.
Summary of the invention
Purpose of the present invention overcomes existing ac synchronous motor exactly, exchange the deficiency of wound rotor motor and speed regulating device thereof, provide a kind of new brushless, the non-slip ring AC synchronous machine, ac wound rotor motor and speed regulating device thereof, motor is mainly by stator 51, rotor 52, compositions such as bearing arrangement 53 and support 54, be primarily characterized in that: described ac synchronous motor, ac wound rotor motor replaces original slip ring and the brush of motor by in a kind of rotating shaft 56 that is installed in electric machine stand 54 inside or the three-phase rotary transformer 55 bi-directional electrical power between static three-phase alternating-current supply and motor rotor rotated 52 in the rotating shaft 57 of electric machine stand 54 outsides.
Described ac synchronous motor, ac wound rotor motor can also can be generator for motor.
First kind of structure of described three-phase rotary transformer is made of three single-phase resolvers 58,59,60 that come successively in the same rotating shaft.
Described three-phase rotary transformer can also have other three kinds of structures, mainly all directly is out of shape by the common three-phase transformer of core construction for " day " font.
Second kind of structure of described three-phase rotary transformer is, there is relative the deciding of three-phase in cross section along axial line, rotor core A2, B2, C2, on the periphery of every mutually relative stator core and rotor core, each settles two or more concentrated windings 83, stator is concentrated winding 83, rotor is concentrated the number of winding 83 to equate or is unequal, the concentrated winding 83 of every phase stator can in parallel or series connection, the magnetic direction that requires all concentrated winding 83 energisings of stator to form is in office to be in a flash same direction, or all towards the axle center or all outside from the axle center, the concentrated winding 83 of every phase rotor can in parallel or series connection, the electromotive force series connection of all concentrated winding 83 inductions of rotor is what increase, parallel connection is the polarity unanimity, can not be internal-neutralized.
The third structure of described three-phase rotary transformer is, there is relative the deciding of three-phase in cross section along axial line, rotor core A1, B1, C1, stator has the loop coil 90 of four surrounding rotors, 91,92,93, the coil 91 of B phase and phase series connection, 92 link to each other, coil 91, the ring current direction of coil 92 surrounding rotors is opposite, coil 91, coil 92 is by middle relative deciding, rotor core B1 separates, A links to each other with coil 90, C links to each other with coil 93, coil 90,91,92,93 equal turn numbers, coil 90, coil 93, series coil 91,92 resistance equates that the situation of rotor winding is identical with the situation of stator winding.
The 4th kind of structure of described three-phase rotary transformer is, relative stator and rotor B1 unshakable in one's determination can be as second kind of structure of three-phase rotary transformer, the method of two or more concentrated windings is respectively settled in employing on the periphery of relative stator core and rotor core, and the third structure of winding construction and three-phase rotary transformer of stator and rotor A1 unshakable in one's determination, stator and rotor C1 unshakable in one's determination is identical, require the equivalent equal turn numbers of the every phase winding of three phase windings of stator, equivalent resistance to equate, the equivalent equal turn numbers of the every phase winding of three phase windings of rotor, equivalent resistance equate.
Described three-phase rotary transformer stator and rotor iron core and winding thereof can constitute an integral body with support 71, bearing 70, hollow rotating shaft 69; the electric wire of drawing of three-phase rotary transformer rotor is drawn by the hollow hole of hollow rotating shaft 69; or at hollow rotating shaft 69 outer surfaces several grooves at even quarter; the groove that electric wire is passed under bearing 70 inner rings of drawing of three-phase rotary transformer rotor is drawn; in case of necessity, devices such as rotating rectifier 61, capacitance-resistance overvoltage protection 62, demagnetization element 63 can be fixed in the three-phase rotary transformer rotating shaft 69.
Described three-phase rotary transformer, for reducing the influence of air gap, can be carved into two cannelures 80 to a side 17 two ends far away as far as possible of every pair of relative stator, rotor core, settle the air gap of 81 of 81, two axle envelopes of two axle envelopes to charge into the grease 82 that contains a large amount of magnetic conduction powder.Also can between every pair of relative stator core, rotor core 98, be inserted in the magnetic conduction bearing 97 that an Internal and external cycle, ball or roller magnetic property are all good, grease contains the magnetic conduction powder, at this moment, three-phase rotary transformer stator 99 is supported on the rotor 100, can be fixed on the support, but three-phase rotary transformer stator 99 can not rotate.
The present invention will be further described below in conjunction with drawings and Examples.
Description of drawings
The single-phase resolver axial line of Fig. 1 cross section structure schematic diagram
The common single-phase transformer structural representation of Fig. 2
Fig. 3 ac synchronous motor axial line of the present invention cross section structure schematic diagram
Fig. 4 ac synchronous motor of the present invention and speed regulating device circuit diagram thereof
Fig. 5 ac wound rotor motor axial line of the present invention cross section structure schematic diagram
Fig. 6 ac wound rotor motor of the present invention and speed regulating device circuit diagram thereof
Second kind of structure axial line of Fig. 7 three-phase rotary transformer of the present invention schematic cross-section
Second kind of structure of Fig. 8 three-phase rotary transformer of the present invention circular section unshakable in one's determination schematic diagram
The third structure axial line schematic cross-section of Fig. 9 three-phase rotary transformer of the present invention
Figure 10 three-phase rotary transformer of the present invention axial line schematic cross-section that the axle envelope is arranged unshakable in one's determination relatively
Figure 11 three-phase rotary transformer of the present invention axial line schematic cross-section that the magnetic conduction bearing is arranged unshakable in one's determination relatively
Embodiment
See Fig. 1, Fig. 2, each single-phase resolver is made of stationary part (static) 1 and rotor portion (rotation) 2, stationary part 1 is made up of stator core 3 and stator winding 4, rotor portion 2 is made up of rotor core 5 and rotor winding 6, its structure, principle is: the closed core 7 of common single-phase transformer, former limit winding 13, secondary winding 14 is with the form separated into two parts of air gap 10, a part is former limit winding 13 and unshakable in one's determination 8, a part is secondary winding 14 and unshakable in one's determination 9, under the prerequisite that keeps transformer working principle, press motor stator, the distortion of rotor form, unshakable in one's determination 9 are deformed into rotor core 5, secondary winding 14 is deformed into rotor winding 6, unshakable in one's determination 8 are deformed into stator core 3, former limit winding 13 is deformed into stator winding 4, planar sheet air gap 10 is deformed into face of cylinder tubulose air gap 16, unshakable in one's determination 8 is relative with unshakable in one's determination 9 and permit a little mutual translation and be deformed into rotor core 5 and stator core 3 concentrics and rotor core 5 and rotate in stator core 3 with rotating shaft 11, and main flux is along iron core 8, unshakable in one's determination 9 simultaneously around former limit winding 13, secondary winding 14 is deformed into main flux along rotor core 5, stator core 3 is simultaneously around stator winding 4, rotor winding 6; Stator winding 4 (former limit winding 13) is a bi-directional with the AC power of rotor winding 6 (secondary winding 14), both can pass to rotor 2 from stator 1, also can pass to stator 1 from rotor 2.
See Fig. 3, Fig. 4, ac synchronous motor of the present invention and speed regulating device thereof and common brushless ac synchronous generator major technique, principle are close, the main difference point is, the no brush device that replaces stator direct current winding excitation, the generating of rotor three-phase AC Windings with brushless three-phase rotary transformer 45, the DC adjustment of stator DC excitation winding changed into the industrial frequency AC of three-phase rotary transformer 45 former limit three-phase alternating current windings 40 is regulated, certainly, also can variable frequency adjustment.
Three-phase rotary transformer is the integral structure of brushless, rectification, protection; be installed in the support rotating shaft 57 outward of the motor that will control; be not installed in the electric machine stand inside that to control; simplified the structure of synchronous machine; at this moment; the rotating shaft of synchronous machine is hollow, and the support 71 of three-phase rotary transformer 55 ties up on the synchronous machine support 54, can not relatively rotate each other.41 is the power-frequency voltage adjuster, also can be frequency converter, and 47 is frequency converter, and 18 is ac synchronous motor threephase stator winding.
See Fig. 5,6 show, ac wound rotor motor of the present invention and speed regulating device thereof and the aforementioned patent cardinal principle of using converter technique about the rotor three-phase winding that exchanges wound rotor motor, technology is close and existing ac wound rotor motor speed governing, variable speed constant frequency generation technology cardinal principle, technology is close, the main difference point is to replace original three-phase brush with brushless three-phase rotary transformer 19, slip-ring device, original direct connection with the rotor three-phase winding 68 that exchanges wound rotor motor of frequency converter 66 outputs changes into, frequency converter 66 outputs are connected with the former limit of the three-phase of three-phase rotary transformer 19 winding 65, the three-phase of three-phase rotary transformer 19 is paid the hollow rotating shaft 64 of limit winding 67 by ac wound rotor motor and is connected with rotor three-phase winding 68, and require frequency converter 66 output frequencies can not be low excessively, otherwise three-phase rotary transformer 19 can be overheated.
The rotor three-phase winding 68 of ac wound rotor motor directly is connected with three-phase rotary transformer 19 rotor three-phase windings 67, when the frequency converter 66 of stator winding 65 of control three-phase rotary transformer 19 is out of order after stator winding 65 with three-phase rotary transformer 19 breaks away from, the three-phase rotor winding 68 of ac wound rotor motor constitutes the closed circuit loop by the limit three-phase rotor winding 67 of paying of three-phase rotary transformer 19, automatically change the asynchronous mode operation over to, thereby, this motor has very high reliability, and 20 is the threephase stator winding of ac wound rotor motor.
See Fig. 7, the stator and rotor that the three-phase rotary transformer three-phase is relative A2, B2 unshakable in one's determination, C2.
See Fig. 8,4 concentrated windings 84,85,86,87 are arranged on the three-phase rotary transformer phase stator, and its magnetic direction all points to the axle center, and 3 concentrated winding 94,95,96 its induced electromotive force series connection of rotor are additions, polarity in parallel is consistent, can not be internal-neutralized.
See Fig. 9, second kind of structure of coil 91,92 and three-phase rotary transformer that B phase stator winding is in series mutually stator and rotor to concentrate the number of winding all be one situation contrast, they are the same to the B1 stator and rotor magnetic field that produces unshakable in one's determination in essence, thereby, the B1 stator and rotor iron core of the third structure of three-phase rotary transformer can adopt the method for second kind of structure of three-phase rotary transformer, stator and rotor is installed is concentrated winding.
See Figure 10, cannelure 80 leaves on stator.
See Figure 11, bearing 97 is the magnetic conduction roller bearing.
Autosynchronous motor of the present invention and speed regulating device thereof can be realized frequency control under the condition of brushless, no slip ring, speed adjustable range is from the 0---rated speed; Ac wound rotor motor of the present invention and speed regulating device thereof can move by brushless, no slip ring, the efficient height, power factor is adjustable, with the frequency converter of low capacity jumbo motor is carried out speed governing, and motor can move on synchronous speed, also can under synchronous speed, move, especially, after the frequency converter of control rotor winding was out of order, motor transferred asynchronous operation automatically to, having very high reliability, also is a kind of AC double-feed motor simultaneously.
Claims (8)
1, based on ac synchronous motor, ac wound rotor motor and the speed regulating device thereof of three-phase rotary transformer technology, motor mainly is made up of stator 51, rotor 52, bearing arrangement 53 and support 54 etc., be primarily characterized in that: described ac synchronous motor, ac wound rotor motor replace original slip ring and the brush of motor by in a kind of rotating shaft 56 that is installed in electric machine stand 54 inside or the three-phase rotary transformer 55 bi-directional electrical power between static three-phase alternating-current supply and motor rotor rotated 52 in the rotating shaft 57 of electric machine stand 54 outsides.
2, the ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof is characterized in that: first kind of structure of described three-phase rotary transformer is made of three single-phase resolvers 58,59,60 that come successively in the same rotating shaft.
3, ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof, it is characterized in that: second kind of structure of described three-phase rotary transformer is, there is relative the deciding of three-phase in cross section along axial line, rotor core A2, B2, C2, on the periphery of every mutually relative stator core and rotor core, each settles two or more concentrated windings 83, stator is concentrated winding 83, rotor is concentrated the number of winding 83 to equate or is unequal, the concentrated winding 83 of every phase stator can in parallel or series connection, the magnetic direction that requires all concentrated winding 83 energisings of stator to form is in office to be in a flash same direction, or all towards the axle center or all outside from the axle center, the concentrated winding 83 of every phase rotor can in parallel or series connection, the electromotive force series connection of all concentrated winding 83 inductions of rotor is what increase, parallel connection is the polarity unanimity, can not be internal-neutralized.
4, ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof, it is characterized in that: the third structure of described three-phase rotary transformer is, there is relative the deciding of three-phase in cross section along axial line, rotor core A1, B1, C1, stator has the loop coil 90 of four surrounding rotors, 91,92,93, the coil 91 of B phase and phase series connection, 92 link to each other, coil 91, the ring current direction of coil 92 surrounding rotors is opposite, coil 91, coil 92 is by middle relative deciding, rotor core B1 separates, A links to each other with coil 90, C links to each other with coil 93, coil 90,91,92,93 equal turn numbers, coil 90, coil 93, series coil 91,92 resistance equates that the situation of rotor winding is identical with the situation of stator winding.
5, ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof, it is characterized in that: the 4th kind of structure of described three-phase rotary transformer is, relative decides, rotor core B1 can be as second kind of structure of three-phase rotary transformer, the method of two or more concentrated windings is respectively settled in employing on the periphery of relative stator core and rotor core, and decide, rotor core A1, fixed, the third structure of the winding construction of rotor core C1 and three-phase rotary transformer is identical, require the equivalent equal turn numbers of the every phase winding of three phase windings of stator, the equivalence resistance equates the equivalent equal turn numbers of the every phase winding of three phase windings of rotor, the equivalence resistance equates.
6; ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1; ac wound rotor motor and speed regulating device thereof; it is characterized in that: the deciding of described three-phase rotary transformer; rotor core and winding thereof can with support 71; bearing 70; hollow rotating shaft 69 constitutes an integral body; the electric wire of drawing of three-phase rotary transformer rotor is drawn by the hollow hole of hollow rotating shaft 69; or at hollow rotating shaft 69 outer surfaces several grooves at even quarter; the groove that electric wire is passed under bearing 70 inner rings of drawing of three-phase rotary transformer rotor is drawn; in case of necessity, rotating rectifier 61; capacitance-resistance overvoltage protection 62; demagnetization element 63 devices such as grade can be fixed in the three-phase rotary transformer rotating shaft 69.
7, the ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof, it is characterized in that: described three-phase rotary transformer, for reducing the influence of air gap, can be carved into two cannelures 80 to a side 17 two ends far away as far as possible of every pair of relative stator, rotor core, settle the air gap of 81 of 81, two axle envelopes of two axle envelopes to charge into the grease 82 that contains a large amount of magnetic conduction powder.
8, the ac synchronous motor based on three-phase rotary transformer technology as claimed in claim 1, ac wound rotor motor and speed regulating device thereof, it is characterized in that: described three-phase rotary transformer, can between every pair of relative stator core, rotor core 98, be inserted in the magnetic conduction bearing 97 that an Internal and external cycle, ball or roller magnetic property are all good, grease contains the magnetic conduction powder, at this moment, three-phase rotary transformer stator 99 is supported on the rotor 100, can be fixed on the support, but three-phase rotary transformer stator 99 can not rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100368866A CN1925277A (en) | 2005-08-29 | 2005-08-29 | Alternating current synchronous motor based on three-phase rotary transformer technology, alternating current wound rotor motor and arrangements for speed regulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005100368866A CN1925277A (en) | 2005-08-29 | 2005-08-29 | Alternating current synchronous motor based on three-phase rotary transformer technology, alternating current wound rotor motor and arrangements for speed regulation |
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| CN1925277A true CN1925277A (en) | 2007-03-07 |
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| CNA2005100368866A Pending CN1925277A (en) | 2005-08-29 | 2005-08-29 | Alternating current synchronous motor based on three-phase rotary transformer technology, alternating current wound rotor motor and arrangements for speed regulation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570849A (en) * | 2010-12-07 | 2012-07-11 | 通用电气公司 | Electric power system including power converter and rotary transformer and method of assembling same |
| CN104487337A (en) * | 2012-05-09 | 2015-04-01 | 雷比诺电力系统 | Rotating three-phase transformer with linked and free flux |
| CN105162306A (en) * | 2015-08-21 | 2015-12-16 | 郑振宇 | Safety extra-low voltage generation device and electric tool |
| CN108429410A (en) * | 2018-04-28 | 2018-08-21 | 合肥巨动力系统有限公司 | A kind of rotation change mounting structure of motor hollow rotating shaft |
| CN109038993A (en) * | 2018-09-15 | 2018-12-18 | 天津大学 | A kind of all-in-one machine of integrated threephase alternator, transformer |
| CN110224614A (en) * | 2019-06-25 | 2019-09-10 | 天津清传科技有限公司 | A kind of power supply rotation transformation device |
| CN111342635A (en) * | 2020-03-05 | 2020-06-26 | 厦门翔澧工业设计有限公司 | Contactless slingshot gear box |
| CN111817449A (en) * | 2020-06-28 | 2020-10-23 | 河海大学 | Wireless power supply system for motor rotor |
| CN112018983A (en) * | 2020-09-05 | 2020-12-01 | 苏州讯如电子科技有限公司 | Permanent magnet auxiliary brushless alternating synchronous motor |
| CN112636539A (en) * | 2020-12-04 | 2021-04-09 | 哈尔滨理工大学 | Excitation device and motor |
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2005
- 2005-08-29 CN CNA2005100368866A patent/CN1925277A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570849A (en) * | 2010-12-07 | 2012-07-11 | 通用电气公司 | Electric power system including power converter and rotary transformer and method of assembling same |
| CN104487337A (en) * | 2012-05-09 | 2015-04-01 | 雷比诺电力系统 | Rotating three-phase transformer with linked and free flux |
| CN104487337B (en) * | 2012-05-09 | 2017-05-03 | 雷比诺电力系统 | Rotating three-phase transformer with linked and free flux |
| CN105162306A (en) * | 2015-08-21 | 2015-12-16 | 郑振宇 | Safety extra-low voltage generation device and electric tool |
| CN105162306B (en) * | 2015-08-21 | 2017-09-22 | 郑振宇 | A kind of SELV generation device and electric tool |
| CN108429410A (en) * | 2018-04-28 | 2018-08-21 | 合肥巨动力系统有限公司 | A kind of rotation change mounting structure of motor hollow rotating shaft |
| CN109038993A (en) * | 2018-09-15 | 2018-12-18 | 天津大学 | A kind of all-in-one machine of integrated threephase alternator, transformer |
| CN110224614A (en) * | 2019-06-25 | 2019-09-10 | 天津清传科技有限公司 | A kind of power supply rotation transformation device |
| CN111342635A (en) * | 2020-03-05 | 2020-06-26 | 厦门翔澧工业设计有限公司 | Contactless slingshot gear box |
| CN111342635B (en) * | 2020-03-05 | 2022-02-22 | 厦门翔澧工业设计有限公司 | Contactless slingshot gear box |
| CN111817449A (en) * | 2020-06-28 | 2020-10-23 | 河海大学 | Wireless power supply system for motor rotor |
| CN111817449B (en) * | 2020-06-28 | 2021-11-16 | 河海大学 | Wireless power supply system for motor rotor |
| CN112018983A (en) * | 2020-09-05 | 2020-12-01 | 苏州讯如电子科技有限公司 | Permanent magnet auxiliary brushless alternating synchronous motor |
| CN112636539A (en) * | 2020-12-04 | 2021-04-09 | 哈尔滨理工大学 | Excitation device and motor |
| CN112636539B (en) * | 2020-12-04 | 2022-05-03 | 哈尔滨理工大学 | Excitation device and motor |
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Open date: 20070307 |