CN103312101A - Multi-stator squirrel-cage alternating current asynchronous motor - Google Patents
Multi-stator squirrel-cage alternating current asynchronous motor Download PDFInfo
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- CN103312101A CN103312101A CN2013102188913A CN201310218891A CN103312101A CN 103312101 A CN103312101 A CN 103312101A CN 2013102188913 A CN2013102188913 A CN 2013102188913A CN 201310218891 A CN201310218891 A CN 201310218891A CN 103312101 A CN103312101 A CN 103312101A
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Abstract
The invention relates to a multi-stator squirrel-cage alternating current asynchronous motor and solves the problem that an asynchronous motor has low efficiency and small power factor during light load. The multi-stator squirrel-cage alternating current asynchronous motor consists of three groups of independent stator cores and windings thereof, and a group of squirrel-cage motor rotors penetrating through three groups of stators; the three groups of independent stator cores and the windings thereof are axially arranged in a motor base to form a combined structure that three groups of magnetic circuits simultaneously act on a rotor core of the same rotor and a winding of the rotor core; the three groups of stators are connected with the same power supply, and the on/off ofthe power supply is controlled according to different loads of the motor; and different power supply combination can make the motor work in the rated condition, and the multi-stator squirrel-cage alternating current asynchronous motor is an ideal high-efficiency asynchronous motor. The multi-stator squirrel-cage alternating current asynchronous motor is simple in structure, high in reliability and low in cost, and is not provided with contact elements; and the asynchronous motor has high work efficiency, is favorable for protecting environment and saving energy and has a wide application prospect.
Description
Technical field
The present invention relates to a kind of AC asynchronous motor that drives multi-load, particularly a kind of many magnetic loops of multiple stators cage ac asynchronous motor.
Background technology
Since exchanging the asynchronous motor appearance, people are carrying out deeply widely research to the alternating current motor energy-efficient performance always.Squirrel-cage alternating current motor particularly, to have a process manufacturing technology simple because of it, the reliability of motor own is high, contactless element, the advantage that cost is low, and be widely used, but the load problem of squirrel-cage alternating current motor receives much concern always, hoist engine, elevator and the electric block etc. that use such as the mine that is used for promoting article, construction site and factory exist heavy duty lifting, the situation that underloading (zero load) descends; Exist in a large number in the Metal Cutting Machine Tool cutting load often less than in addition also much smaller than the situation of its gas-distributing motor rated power; Part machine tool such as double housing planer, broaching machine etc., then existing impulse stroke is not, and also arranged in impulse stroke dividing of underloading heavy duty again; Above-mentioned electromechanical equipment can be wasted a large amount of electric energy when unloaded and underloading.Efficient during the AC asynchronous motor underloading all is to compare with permanent magnet synchronous motor with power factor, but because the price comparison of permanent magnet is expensive, and the reliability ratio of permanent magnet is lower, whole reliability is not good, therefore is restricted on using yet.The star triangular transformation of existing asynchronous motor by loading power reduces the method to waste of energy, although can saves energy, the electric energy saved of corresponding various load also be limited.
Summary of the invention
The object of the present invention is to provide a kind of multiple stators cage ac asynchronous motor, all advantages that it has the squirrel-cage alternating current motor can make again motor have higher operating efficiency when different load.
The present invention uses following mode to finish:
A kind of multiple stators cage ac asynchronous motor, its support is comprised of three parts, is respectively left part support, intermediate stand and right part support; One group of independently stator core is housed respectively in left part support, intermediate stand and the right part support, is respectively left part stator core, intermediate stator iron core and right part stator core; Three groups independently stator core one group of independently winding respectively is housed, be respectively left part winding, middle winding and right part winding; Rotor core is installed on the axle of rotor, and independently stator core is corresponding with three groups; Setting-in one group rotor winding on rotor core, three groups independently stator core and axis of winding thereof arrange and be installed in the support, consisted of three groups of combining structures that have magnetic loop to act on simultaneously again rotor core and the winding thereof of same rotor; Rotor core and winding thereof have independently consisted of three groups of magnetic loops among the stator core altogether at three groups.
Multiple stators cage ac Induction Motor Structure of the present invention is simple, contactless element, and reliability is high, and cost is low, because its structure and mouse cage AC electric machinery are seemingly, therefore it has advantages of the mouse cage AC motor.Support has three parts to combine, and is easy to dismounting than common multiple stators motor, and this installation method is conducive to the maintenance of motor, when any one section damage can disassemble repairing.Rotor core 11 is an integral body stressed distribution of rotor when being conducive to loading.For different loads, can carry out different combinations, can improve the operating efficiency of motor, also be conducive to environmental protection and energy saving, therefore have broad application prospects.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the fundamental diagram of motor of the present invention.
Embodiment
Describe embodiments of the invention in detail and set forth basic principle below in conjunction with accompanying drawing:
The present invention is a kind of multiple stators cage ac asynchronous motor, and its support is comprised of three parts, is respectively left part support 1, intermediate stand 2 and right part support 3; Left part support 1, intermediate stand 2 and right part support 3 be interior to be equipped with respectively one group of independently stator core, is respectively left part stator core 4, intermediate stator iron core 5 and right part stator core 6; Three groups independently stator core one group of independently winding respectively is housed, be respectively left part winding 8, middle winding 9 and right part winding 10; Three groups independently stator core and axis of winding thereof arrange and be installed in the support, having consisted of three groups has rotor core 11 that magnetic loop acts on again same rotor simultaneously and the combining structure on the winding 14 thereof.Rotor core 11 is installed on the axle 15 of rotor, and independently stator core is corresponding with three groups; Setting-in one group rotor winding 14 on rotor core 11, rotor core 11 and winding 14 thereof intert and have independently consisted of three groups of magnetic loops among the stator core at three groups and act on simultaneously on the rotor winding 14.The length of rotor core 11 is to right stator core 6 right-hand members from left stator core 4 left ends.Whole rotor is supported by pair of bearings, and left part bearing 12 is installed on the left end cap 7, and right part section bearing 13 is installed on the right end cap 16; Left end cap 7 and right end cap 16 are installed in respectively on left support 1 and the right support 3.
Three groups of the present invention independently stator core and winding thereof have consisted of three groups of independently stators.Three groups of stators have identical number of poles, can be two utmost points, four utmost points or sextupole etc., but the capacity of three groups of stators are different.The connected mode of motor winding of the present invention is uncertain, if the design of motor stator winding designs according to delta connection, every group of winding has six terminals to draw, and has 18 terminals and draws.When now setting sub-winding and be triangular form and connecting, rated power can be respectively 7.5kW, 30kW and 7.5kW, the capacity of intermediate stator 30kW more greatly during manufacturing, and the capacity of left stator and right stator is all 7.5kW mutually.The internal-and external diameter of three groups of stators equates the convenience being convenient to install, and it is large that the length of the Length Ratio left and right sides stator core of the stator core that middle capacity is larger is wanted.
The whole rotor core 11 of installing at armature spindle 15 is the silicon steel sheet with insulation.The cage bar of mouse cage is made by red copper, cage bar and rotor core 11 and fixedly be provided with insulating barrier between the groove of disjunctor, and the cage bar runs through whole rotor core 11 vertically.There is the end ring short circuit of short circuit at cage bar two ends, consist of cage rotor.Rotor left part bearing 12 and rotor right part bearing 13 can make rotor stability ground rotate.A among Fig. 2
1-X
1, B
1-Y
1, C
1-Z
1Be the stator winding of left stator, A
2-X
2, B
2-Y
2, C
2-Z
2Be the stator winding of intermediate stator, A
3-X
3, B
3-Y
3, C
3-Z
3Stator winding for right stator.Three groups of three phase mains terminals of drawing can also can connect by triangle in Y-connection.
When above-mentioned motor was connected three phase mains, three groups of stators all can produce a rotating magnetic field separately, and the direction of rotation in magnetic field is consistent, and the magnetic flux cutting cage bar of three groups of stators produces induced electromotive force in rotor cage bar.The rotary pole S-N axis of three stators always, the magnetic flux that three stators produce produces respectively three induced electromotive forces in rotor cage bar, frequency is identical, direction is consistent, the synthetic electromotive force at rotor cage bar two ends is three induced electromotive force sums.
According to motor-operated load, whether three groups of stators of motor are switched on and three groups of stator winding carry out that star connects or corner connection is divided into groups, when three stators connect identical power supply, but the induced electromotive force of simultaneously rotor cage bar generation can be not different yet for the connected mode of winding, this can cause the size of rotor current to change, thereby change the size of motor torque, the torque of motor
Whether three groups of stators switch on also can affect the size of the induced electromotive force that the rotor cage bar two ends produce, thereby affects the size of motor torque.Can carry out to the different loads of motor band the classification processing by the energising combination of three stators and the star cam combination of winding, make like this motor be operated in the higher working point of efficient always.
When same motor was converted to star connection by delta connection, the phase voltage of stator winding became original
Electric current is about original
The power of input motor
U is phase voltage, and I is phase current,
Therefore power-factor angle approximately becomes original 1/3rd.Three stators when the star triangular transformation, answer control phase to make the rotary pole S-N of different stator winding generations on same axis by same Power supply.As calculated, when when 5kW carries out classification to power of motor, can be divided into 9 stages, packet transaction such as following table 1, the stator winding of " √ " expression energising and the connected mode of selecting thereof in the table, the connected mode that blank expression no power and motor are not selected.According to the size of load, carry out the step mode of motor winding and whether switch on and design according to table 1.Control the type of attachment of winding by control k1-k6, whether control S1-S3 control power supply is connected.Can switch on simultaneously to three stators during startup, three staring torques of generation act on the rotor, and staring torque is greater than the staring torque of any single stator motor wherein like this, so the multiple stators asynchronous motor is conducive to the quick startup of motor.
The getting type of table 1 stator winding power supply
Claims (6)
1. multiple stators cage ac asynchronous motor, it is characterized in that: its support is comprised of three parts, is respectively left part support (1), intermediate stand (2) and right part support (3); In left part support (1), intermediate stand (2) and the right part support (3) one group of independently stator core being housed respectively, is respectively left part stator core (4), intermediate stator iron core (5) and right part stator core (6); Three groups independently stator core one group of independently winding respectively is housed, be respectively left part winding (8), middle winding (9) and right part winding (10); Rotor core (11) is installed on the axle (15) of rotor, and independently stator core is corresponding with three groups; At the upper setting-in one group rotor winding (14) of rotor core (11); Three groups independently stator core and axis of winding thereof arrange and be installed in the support, having consisted of three groups has rotor core (11) that magnetic loop acts on again same rotor simultaneously and the combining structure on the winding (14) thereof; Rotor core (11) and winding (14) thereof have independently consisted of three groups of magnetic loops among the stator core altogether at three groups.
2. motor according to claim 1 is characterized in that: the length of the rotor core of described rotor (11) is for from left stator core (4) left end to right stator core (6) right-hand member.
3. motor according to claim 1 and 2, it is characterized in that: whole rotor is supported by pair of bearings, and left part bearing (12) is installed on the left end cap (7), and right part section bearing (13) is installed on the right end cap (16).
4. motor according to claim 3, it is characterized in that: left end cap (7) and right end cap (16) are installed in respectively on left support (1) and the right support (3).
5. motor according to claim 1 and 2 is characterized in that: three groups independently stator core and winding thereof consisted of three groups of independently stators, three groups of stators have identical number of poles, are two utmost points, four utmost points or sextupole.
6. motor according to claim 1, it is characterized in that: the cage bar of mouse cage runs through whole rotor core (11) vertically, and there is the end ring short circuit of short circuit at cage bar two ends, consist of cage rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102188913A CN103312101A (en) | 2013-06-04 | 2013-06-04 | Multi-stator squirrel-cage alternating current asynchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102188913A CN103312101A (en) | 2013-06-04 | 2013-06-04 | Multi-stator squirrel-cage alternating current asynchronous motor |
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| Publication Number | Publication Date |
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| CN103312101A true CN103312101A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102188913A Pending CN103312101A (en) | 2013-06-04 | 2013-06-04 | Multi-stator squirrel-cage alternating current asynchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703582A (en) * | 2016-02-04 | 2016-06-22 | 精进电动科技（北京）有限公司 | Integrated type electric motor |
| RU174156U1 (en) * | 2017-06-01 | 2017-10-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | MULTISTATOR ASYNCHRONOUS MOTOR |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216443U (en) * | 1987-12-17 | 1988-09-28 | 浙江工学院 | Speed regulating device of cage phaseshift motor |
| CN2703355Y (en) * | 2004-04-06 | 2005-06-01 | 王冬雷 | Multi-stator and multiwinding brushless DC electric machine |
| CN200980027Y (en) * | 2006-10-16 | 2007-11-21 | 高明真 | A double-rotor and double stator motor using a solid rotor to drive a squirrel-cage motor |
| CN201118394Y (en) * | 2007-11-22 | 2008-09-17 | 蒋国扬 | Multi-power three-phase energy-saving electromotor |
| WO2012116572A1 (en) * | 2011-03-02 | 2012-09-07 | Li Qizhong | Combined torque asynchronous variable-speed motor |
-
2013
- 2013-06-04 CN CN2013102188913A patent/CN103312101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216443U (en) * | 1987-12-17 | 1988-09-28 | 浙江工学院 | Speed regulating device of cage phaseshift motor |
| CN2703355Y (en) * | 2004-04-06 | 2005-06-01 | 王冬雷 | Multi-stator and multiwinding brushless DC electric machine |
| CN200980027Y (en) * | 2006-10-16 | 2007-11-21 | 高明真 | A double-rotor and double stator motor using a solid rotor to drive a squirrel-cage motor |
| CN201118394Y (en) * | 2007-11-22 | 2008-09-17 | 蒋国扬 | Multi-power three-phase energy-saving electromotor |
| WO2012116572A1 (en) * | 2011-03-02 | 2012-09-07 | Li Qizhong | Combined torque asynchronous variable-speed motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703582A (en) * | 2016-02-04 | 2016-06-22 | 精进电动科技（北京）有限公司 | Integrated type electric motor |
| US11289983B2 (en) | 2016-02-04 | 2022-03-29 | Jing-Jin Electric Technologies Co., Ltd. | Integrated electrical motor |
| RU174156U1 (en) * | 2017-06-01 | 2017-10-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | MULTISTATOR ASYNCHRONOUS MOTOR |
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Application publication date: 20130918 |