CN2135869Y - Double-stator induction motor and application device thereof - Google Patents
Double-stator induction motor and application device thereof Download PDFInfo
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- CN2135869Y CN2135869Y CN 92220388 CN92220388U CN2135869Y CN 2135869 Y CN2135869 Y CN 2135869Y CN 92220388 CN92220388 CN 92220388 CN 92220388 U CN92220388 U CN 92220388U CN 2135869 Y CN2135869 Y CN 2135869Y
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- stator
- stator winding
- contactor
- motor
- rotor
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Abstract
The utility model relates to a double-stator induction motor and an application device thereof, and is composed of two stators and a rotor. Two stator iron cores are respectively embedded with stator windings. A guide strip of the rotor travels through two sections of rotor iron cores in the transverse direction. The pole logarithm, the rating voltage and the rating capacity of the two stator windings can be identical or different. The stator windings of the motor are externally connected with electronic components and electrical devices to form various application apparatuses according to load requirements. The utility model is suitable for starting a large quantity of load, regulating speed and braking, or generating high-frequency electricity, can take the place of an expensive winding induction motor in many occasions, and is particularly suitable for the environments of blowers, pumps, serious powder dust, easy burn and easy explosion.
Description
The utility model relates to a kind of pair of stator-induced electromagnetic motivation and application apparatus thereof.
Squirrel cage induction motor total head across-the-line starting electric current is 6-7 a times of rated current, causes the big pressure drop of line voltage, is unfavorable for the normal operation of other electric machinery and apparatus on the electrical network.Adopt reduced voltage starting, can limit starting current, but the proportional decline of starting torque and voltage squared, and need additional reduced voltage starting device, if adopt expensive Wound induction motor and additional starting equipment thereof,, also can bring noise because slip ring and brush are arranged, easy to wear, problem such as maintenance capacity is big.At present, the ac speed control method of squirrel cage induction motor mainly contains pole changing, electromagnetic speed-adjusting, variable voltage control and frequency control.The speed governing progression of pole changing is less, and rotating speed can not choose at random; The price of asynchronous machine that electromagnetic speed-adjusting adopted and clutch package unit approximately is 3-4 times with the capacity electrical machinery price; The speed adjustable range of variable voltage control is narrow, and moment is little when low speed, and efficient is low, and the rotor heating is serious; The variable-frequency control technique complexity, the cost height produces harmonic pollution to electrical network.At the problem of above-mentioned existence, the speed governing of two stator squirrel cage induction motor has caused people's attention.The two stator squirrel-cage motor of Chinese patent CN87104033A utilize mechanical device to make one of them stator winding carry out speed governing to another stator winding machinery phase shift, this motor production and processing difficulty, and the cost height, higher being difficult to of electric machine temperature rise solves during speed governing; The two stator squirrel-cage motor of Chinese patent CN87216443U are one of them stator winding tap, move electrical degree and change the tap connection by groove and carry out phase shift and realize step speed regulation.This electric machine speed regulation is step speed regulation, and speed governing progression is many more, and the contactor of tap and use is also many more, increased the complexity and the cost of control circuit, and speed governing progression is limited, and speed adjustable range is very narrow; The Chinese patent 9121464.6(that the utility model designer once applied for authorizes) and 91107139.3(open), having proposed need not mechanical phase shift and the two stator squirrel cage induction motors of stator winding tap phase shift, but in the middle of rotor mouse cage sliver, insert the rotation resistance ring, this motor is owing to require to insert the interlaminated resistance ring, the difficulty and the cost of production technology have been increased to a certain extent, slip power consumes at internal rotor during speed governing, causes that electric machine temperature rise is higher.
The purpose of this utility model is to provide a kind of pair of stator-induced electromagnetic motivation and application apparatus thereof at the deficiencies in the prior art, it constitutes multiple application apparatus by motor and external connected electronic element and electric equipment, it has simple in structure, cost is low, use flexibly, speed-regulating range width and make the electric machine temperature rise can be not too high, being applicable to needs low starting current, exchanges blower fan, pump class and other the load occasion of classification or stepless speed regulation, braking and high frequency generating etc.
Two stator-induced electromagnetic motivations that the utility model provides and application apparatus thereof such as Fig. 1～shown in Figure 5.
Fig. 1 is two stator-induced electromagnetic drive machine schematic diagrames
(1) (2) stator core, (3) (4) stator winding, (5) (6) rotor core, (7) rotor bar, (8) (9) rotor end ring, (10) bearing, (11) rotating shaft, (12) casing.
Be provided with two stator cores (1) and (2) in the motor, wherein be embedded with stator winding (3) and (4) respectively, be supported in the rotating shaft (11) on the bearing (10) two-stage rotor iron core (5) and (6) are arranged, rotor bar traverses in the two-stage rotor iron core, and connect into cage modle with end ring (8) (9), casing (12) is assembled into integral body with motor, the number of pole-pairs of two stator winding, rated voltage and rated capacity can be identical or different, rotor also can be designed to deep slot type, two squirrel-cage or high sliding, also can be Wound-rotor type, constitute multiple application apparatus by motor and external connected electronic element and electric equipment.
The example of the main electrical scheme method of several pairs of stator-induced electromagnetic motivation application apparatus is provided with reference to the accompanying drawings:
Fig. 2 is the main electrical scheme method illustration figure of one of motor application device
UVW is a three-phase alternating-current supply, and KP is a knife switch, and ZR is a fuse, and (13) are voltage regulator (controllable transducer, voltage regulating transformer or thyristor exchange voltage regulator), JK
1～JK
9Be contactor or power electronics noncontacting switch, A
1, B
1, C
1, X
1, Y
1, Z
1And A
2, B
2, C
2, X
2, Y
2, Z
2Be respectively the head end and the end of stator winding (3) (4).
The stator winding of motor (3) is through contactor or electronic power switch JK
1, voltage regulator (13), fuse ZR and knife switch KP be connected to three-phase alternating-current supply UVW.The stator winding of motor (4) is through JK
2～JK
4After, pass through JK
7In parallel with stator winding (3), or pass through JK
8Connect with stator winding (3).According to stator winding (3) and (4) serial or parallel connection mode, JK
5, JK
6, JK
9Correspondingly closure or disconnection.By control JK
1～JK
9Folding, then can obtain starting performance and six grades of step speed regulations of low starting current.By the output voltage of control voltage regulator (13), then can obtain level and smooth speed adjusting performance again.As not needing multistage starting and speed governing, also can cancel corresponding required contactor or voltage regulator.
During starting, at first disconnect JK
7And JK
9, JK closes
8, make motor stator winding (3) and (4) series connection.JK then closes
1, JK
3And JK
5, and disconnect JK
2, JK
4And JK
6After a time interval, disconnect JK
3And JK
5, and the JK that closes
4And JK
6After a time interval, disconnect JK again
4And JK
6, and the JK that closes
2And JK
5During speed governing, control JK
2～JK
6Folding, then obtain three grades of step speed regulations.In like manner, disconnect JK
8, and the JK that closes
7And JK
9, make motor stator winding (3) and (4) parallel connection, control JK
2～JK
6Folding, can obtain three grades of step speed regulations again.By the output voltage of control voltage regulator (13), then can obtain level and smooth speed adjusting performance again.Naturally, when load does not need multistage starting and speed governing, can save corresponding required contactor or power electronics noncontacting switch,,, also can save voltage regulator (13) as not needing stepless speed control to reduce cost.
Fig. 3 is two main electrical scheme method illustration figure of motor application device
(14) comprise contactor JK
10～JK
12And resistor R
1～R
3, also can change chopper or cascade adjustable-speed system into.
Motor stator winding (4) is by contactor JK
10Connect resistor R
1, R
2And R
3, or through contactor JK
2In parallel with stator winding (3), then through voltage regulator (13), fuse ZR and knife switch KP are connected to three-phase alternating-current supply UVW, by control JK
1, JK
2And JK
10～JK
12Folding and resistor R
1～R
3Input progression, can obtain low starting current and than large starting moment, step speed regulation and braking ability.According to the corresponding required contactor of load needs changeable resistance sum of series.As the need stepless speed control, then (14) are changed into chopper or cascade adjustable-speed system, and set up voltage regulator (13).
During starting, disconnect JK earlier
2, JK
11And JK
12, JK closes
1And JK
10Behind the certain interval of time, JK closes respectively successively
12And JK
11, disconnect JK at last
10, JK closes
2, can increase or reduce resistor progression and corresponding required contactor according to load request during design; Also can be without starting resistance (R
1=R
2=R
3=0), and only sets up JK
10During speed governing, the resistor progression that control drops into can obtain multistage step speed regulation.As the need stepless speed control, (14) can be changed into chopper or cascade adjustable-speed system, and set up voltage regulator (13).During motor braking, disconnect JK
2, and make JK
10Insert enough big resistance, make motor braking until stall.
Fig. 4 is three main electrical scheme method illustration figure of motor application device
(15) rectifier, JK
13And JK
14Be contactor.
Voltage regulator (13) output voltage is through contactor JK
2Supply with stator winding (4) positive sequence voltage and produce forward moment, or through contactor JK
13And resistance R
4Supply with stator winding (4) backward voltage and produce plug braking moment, or through rectifier (15) and contactor JK
14Supply with stator winding (4) direct current and produce dynamic braking moment, and stator winding (3) is through contactor JK
1Connect positive sequence voltage and produce forward moment, by control contactor JK
1, JK
2, JK
13And JK
14Folding and the output voltage of voltage regulator (13) carry out speed governing.Also can make stator winding (3) asymmetric operation obtain electronic and braking effect simultaneously.
Motor is when the high regime speed governing, and JK closes
1And JK
2, disconnect JK
13And JK
14, the output voltage of control voltage regulator (13) carries out speed governing.Motor is when the low speed segment speed governing, and JK closes
1And JK
13, disconnect JK
2And JK
14Make stator winding (4) produce backward magnetic field and reverse electromagnetic torque, what this moment, the motor output torque was the forward moment that produces of stator winding (3) order magnetic field with the opposing torque of stator winding (4) generation is poor, the output voltage of control voltage regulator (13) can carry out speed governing, and uses resistor R
4The restriction electric current; If close JK
1And JK
14, disconnect JK
2And JK
13The output voltage of voltage regulator (13) sends into direct current for behind rectifier (15) two phase windings of stator winding (4), make it to produce dynamic braking moment, what this moment, the motor output torque was the forward moment that produces of stator winding (3) with this braking moment is poor, carries out speed governing by the output voltage of controlling voltage regulator (13).JK also can close
1, JK
13And JK
14, and disconnect JK
2, make stator winding (4) produce plug braking and dynamic braking moment simultaneously.
Fig. 5 is four main electrical scheme method illustration figure of motor application device
(16) load.
The stator winding of motor (3) is through contactor JK
1, voltage regulator (13), fuse ZR and knife switch KP insert three-phase alternating-current supply UVW, and the number of pole-pairs of stator winding (4) is greater than the number of pole-pairs of stator winding (3), therefore in stator winding (4), induce high frequency potential supply load (16), the size of regulating stator winding (4) output high voltage by the output voltage of control voltage regulator (13).
In this high frequency power generation applications device, the rotor winding of motor is a winding-type.The selection of the number of pole-pairs of stator winding should meet two requirements: (a) rotating magnetic field of two kinds of different poles logarithms can not produce mutual inductance in winding; (b) can not produce asymmetric electromagnet pull during two kinds of magnetic field superposition to rotor.In addition, should select the winding coefficient of stator winding (4) to make its induction of high frequency electromotive force.By controlling the size that voltage regulator (13) is regulated output high voltage.As the voltage of needs acquisition higher frequency, can be with this motor cascade operation.But along with the rising of frequency, the iron loss of motor causes thereupon rising that also electric machine temperature rise is too high, should select the type of cooling of high-quality core material and consideration motor during design for use.
More than exemplified the main electrical scheme method of four kinds of application apparatus of two stator-induced electromagnetic motivations, in fact, this motor also can have other purposes, for example as wind-force or waterpower asynchronous generator.According to different purposes, the structure of shown in Figure 1 pair of stator-induced electromagnetic motivation can change the sliver mouse cage that a sealing is respectively arranged in rotor core (5) (6); Also can remove stator core (2) and rotor core (6), and stator winding (4) is embedded in the stator core (1), head, end that will stator winding (3) (4) draws the external connected electronic element and electric equipment constitutes multiple application apparatus.
The utlity model has following advantage:
1, motor is made up of two stators and a rotor, do not need to make the stator mechanical rotation or with stator winding by the tap of groove jayrator, also needn't in rotor, add the rotation resistor in addition.Therefore it has advantages such as simple in structure, easily manufactured, that cost is lower.
2, be that the newly-designed application apparatus of motor is versatile and flexible, implement easily, can adapt to the requirement of a large amount of load startings, speed governing and braking, high frequency generating aspect.Slip power consumes the resistance (or feedback and electrical network) in the motor outside, can not cause that the motor internal temperature rise is too high, so speed adjustable range is wideer and efficient is higher.
3, motor can replace the Wound induction motor of high price under many occasions, and cost is low and brushless and slip ring, and maintenance capacity is little, is particularly useful for adverse circumstances inflammable and explosive and that dust is heavy.
4, motor has only one of them stator winding work when underloading and low speed, and loss is little, the efficient height, and good energy-conserving effect, simultaneously, some electronic component in the control system also can be by a stator winding Capacity Selection, thereby has reduced cost.
Claims (6)
1, a kind of pair of stator-induced electromagnetic motivation [1] contains casing, stator and rotor, it is characterized in that being provided with in this motor two stator cores (1) and (2), wherein be embedded with stator winding (3) and (4) respectively, be supported in the rotating shaft (11) on the bearing (10) two-stage rotor iron core (5) and (6) are arranged, rotor bar (7) traverses in the two-stage rotor iron core, and connect into cage modle with end ring (8) and (9), the number of pole-pairs of two stator winding, rated voltage and rated capacity can be identical or different, rotor also can be designed to deep slot type, two squirrel-cage or high sliding, also can be Wound-rotor type, constitute multiple application apparatus by motor and external connected electronic element and electric equipment.
2, according to described pair of stator-induced electromagnetic motivation of claim 1, it is characterized in that one of this motor applications device by motor stator winding (3) through contactor JK
1, voltage regulator (13), fuse ZR and knife switch KP be connected to three-phase alternating-current supply UVW, the stator winding of motor (4) is through contactor JK
2～JK
4After, by contactor JK
7In parallel with stator winding (3), or by contactor JK
8Connect with stator winding (3), and contactor JK
5, JK
6, JK
9Correspondingly closure or disconnection is by control JK
1～JK
9Folding, then can obtain low starting current and six grades of step speed regulations, and the output voltage of control voltage regulator (13) comes stepless speed control, as not needing multistage starting and speed governing, also can cancel corresponding required contactor or voltage regulator (2).
3, according to described pair of stator-induced electromagnetic motivation of claim 1, it is characterized in that this motor application apparatus two by motor stator winding (4) by contactor JK
10Connect resistor R
1, R
2And R
3, or through contactor JK
2In parallel with stator winding (3), be connected to three-phase alternating-current supply UVW through voltage regulator (13), fuse ZR and knife switch KP then, by control contactor JK
1, JK
2And JK
10～JK
12Folding and resistor R
1～R
Input progression, can obtain low starting current and than large starting moment, step speed regulation and braking ability, can be according to the corresponding required contactor of load needs increase and decrease resistance sum of series, stepless speed control then changes chopper or cascade adjustable-speed system into (14) as need, and sets up voltage regulator (13) (3).
4, according to described pair of stator-induced electromagnetic motivation of claim 1, three voltage regulator (13) output voltage that it is characterized in that this motor applications device is through contactor JK
2Supply with stator winding (4) positive sequence voltage and produce forward moment, or through contactor JK
13And resistor R
4Supply with stator winding (4) backward voltage and produce plug braking moment, or through rectifier (15) and contactor JK
14Supply with stator winding (4) direct current and produce dynamic braking moment, and stator winding (3) is through contactor JK
1Connect positive sequence voltage and produce forward moment, by control contactor JK
1, JK
2, JK
13And JK
14Folding and the output voltage of voltage regulator (13) carry out speed governing, also can make stator winding (3) asymmetric operation obtain electronic simultaneously and braking effect (4).
5, according to described pair of stator-induced electromagnetic motivation of claim 1, four stator winding by motor (3) of application apparatus that it is characterized in that this motor are through contactor JK
1, voltage regulator (13), fuse ZR and knife switch KP be connected to three-phase alternating-current supply UVW, and the number of pole-pairs of stator winding (4) is greater than the number of pole-pairs of stator winding (3), therefore by stator winding (4) induction of high frequency electromotive force supply load (16), this moment, the rotor winding was a winding-type, and should correctly select the number of pole-pairs and the winding coefficient (5) of stator winding (3) (4) and rotor winding.
6, according to described pair of stator-induced electromagnetic motivation of claim 1, the structure that it is characterized in that this motor can change the sliver mouse cage that a sealing is respectively arranged in rotor core (5) and (6), also can remove stator core (2) and rotor core (6), and stator winding (3) and (4) all be embedded in the stator core (1) but will stator winding (3) and head, the end of (4) drawn the external connected electronic element and electric equipment constitutes multiple application apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220388 CN2135869Y (en) | 1992-09-29 | 1992-09-29 | Double-stator induction motor and application device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220388 CN2135869Y (en) | 1992-09-29 | 1992-09-29 | Double-stator induction motor and application device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2135869Y true CN2135869Y (en) | 1993-06-09 |
Family
ID=33767432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92220388 Expired - Fee Related CN2135869Y (en) | 1992-09-29 | 1992-09-29 | Double-stator induction motor and application device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2135869Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545501A (en) * | 2012-01-19 | 2012-07-04 | 东南大学 | Axial dual-stator brushless double-fed motor |
| WO2012116572A1 (en) * | 2011-03-02 | 2012-09-07 | Li Qizhong | Combined torque asynchronous variable-speed motor |
| CN105322742A (en) * | 2014-12-13 | 2016-02-10 | 谭健 | Super-high-voltage direct current power generation |
| CN107681829A (en) * | 2017-11-09 | 2018-02-09 | 哈尔滨理工大学 | A kind of direct-drive type wave generator structure |
| CN112567603A (en) * | 2018-07-31 | 2021-03-26 | 德纳汽车系统集团有限责任公司 | Brushless DC motor with double stators |
-
1992
- 1992-09-29 CN CN 92220388 patent/CN2135869Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012116572A1 (en) * | 2011-03-02 | 2012-09-07 | Li Qizhong | Combined torque asynchronous variable-speed motor |
| CN102545501A (en) * | 2012-01-19 | 2012-07-04 | 东南大学 | Axial dual-stator brushless double-fed motor |
| CN105322742A (en) * | 2014-12-13 | 2016-02-10 | 谭健 | Super-high-voltage direct current power generation |
| CN107681829A (en) * | 2017-11-09 | 2018-02-09 | 哈尔滨理工大学 | A kind of direct-drive type wave generator structure |
| CN107681829B (en) * | 2017-11-09 | 2019-12-03 | 济南世普润节能环保科技有限公司 | A kind of direct-drive type wave generator structure |
| CN112567603A (en) * | 2018-07-31 | 2021-03-26 | 德纳汽车系统集团有限责任公司 | Brushless DC motor with double stators |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |