CN102694450A - Speed self-measuring permanent magnet synchronous motor - Google Patents
Speed self-measuring permanent magnet synchronous motor Download PDFInfo
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- CN102694450A CN102694450A CN2012101893160A CN201210189316A CN102694450A CN 102694450 A CN102694450 A CN 102694450A CN 2012101893160 A CN2012101893160 A CN 2012101893160A CN 201210189316 A CN201210189316 A CN 201210189316A CN 102694450 A CN102694450 A CN 102694450A
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Abstract
The invention discloses a speed self-measuring permanent magnet synchronous motor, which comprises a stator, a rotor and a rotating shaft, and is characterized in that the rotor comprises a rotor core, rotor slots, rotor permanent magnet slots, rotor teeth, rotor conductors and rotor permanent magnets; the stator comprises a stator core, stator power winding slots, stator teeth and stator power windings which are arranged in the stator power winding slots; a plurality of stator power winding slots are formed on the inner surface of the stator core; the stator core between adjacent stator power winding slots forms the stator teeth; a stator measuring tooth is arranged in the stator teeth; and a detection winding is arranged on the stator measuring tooth. The rotating speed of the rotor is measured by measuring potential frequency of tooth harmonic induced by the detection winding, a speed sensor structure and a motor structure are fused together without installation of a mechanical speed sensor, the hardware composition in a motor control system is simplified, and therefore the reliability of the motor control system is improved; and moreover, the permanent magnet synchronous motor has the advantages of speed self-measuring function, simple structure and good using effect.
Description
Technical field
The present invention relates to a kind of permagnetic synchronous motor, especially a kind of permagnetic synchronous motor that tests the speed certainly that is applicable in the industrial and mining enterprises.
Background technology
That permagnetic synchronous motor has is simple in structure, high power density, high efficiency advantage; Because the excitation of magneto source is permanent magnet, so motor itself is simple in structure, and volume is less relatively; Power density is higher; In addition, the power factor of permagnetic synchronous motor is high, helps the configuration operation of electrical network.
The high performance Alternating Current Governor System that is made up of permagnetic synchronous motor at present be unable to do without spinner velocity checkout gear accurately; But the installation of spinner velocity detecting sensor has not only increased the installation difficulty of system; Also increased the cost of system, for the system of little inertia, with the response speed that influences system; For the narrow and small occasion in some space, the mechanical type velocity transducer can not be installed.
Summary of the invention
Technical problem: the objective of the invention is the deficiency to prior art, provide that a kind of compact conformation is simple, rate signal is accurate, reliability is high, the permagnetic synchronous motor that the spinner velocity transducer just can detect spinner velocity certainly need be installed.
Technical scheme: the permagnetic synchronous motor that tests the speed certainly of the present invention comprises stator, rotor and rotating shaft; Said rotor comprises rotor core; Evenly be provided with a plurality of rotor slots that form rotor tooth on the excircle of rotor core, be equipped with rotor conductor in each rotor slot, be symmetrically distributed with the even number permanent magnet trough around rotating shaft in the rotor core; Be equipped with rotor permanent magnet in each rotor permanent magnet groove; Said stator comprises stator core, evenly is provided with a plurality of stator power winding wire slots that form a plurality of stator tooths on the inner periphery of stator core, is equipped with stator power winding in each stator power winding wire slot; A tooth of setting in a plurality of stator tooths on the said stator core inner periphery is measured tooth as stator; On stator measurement tooth, be symmetrical set two and detect windings, said stator is measured tooth and is comprised stator measurement tooth body, and the right and left inclined plane that stator is measured the tooth body is stator measurement tooth boots; It is that stator is measured the sector face that stator is measured tooth body top, and stator is measured between tooth boots and the stator measurement sector face and is arranged with the detection winding wire slot that placement detects winding to the left and right along stalk; Rotor slot in the said rotor core is opening or half opening.
Beneficial effect:
(1), the present invention is provided with two and detects winding on a tooth of permanent-magnetic synchronous motor stator; Through measuring the slot ripples electromotive force frequency measurement rotor speed that detects the winding induction; Velocity transducer structure and electric machine structure are merged; Do not need the mechanical type velocity transducer is installed again, simplified the hardware of electric machine control system and formed, improved the reliability of electric machine control system;
(2), detect winding and stator power winding in spatial vertical, the magnetic flux that stator power winding produces can not produce induced potential in detecting winding, therefore, the accuracy of detection that detects winding can not receive the influence of stator current variation;
(3), owing to be through measure detecting the slot ripples electromotive force frequency measurement rotor speed of winding induction, so the fluctuation of the magnetic field of permanent magnet all is fit to measuring at a high speed for low speed the not influence of tachometric survey precision.
Description of drawings
Fig. 1 is the structure chart from the permagnetic synchronous motor that tests the speed of the present invention;
Fig. 2 is that stator of the present invention is measured the toothing sketch map.
Among the figure: the 1-stator core; 2-stator power winding wire slot; The 3-stator tooth; 4-stator power winding; 5-detects winding; The 6-rotor core; The 7-rotor slot; 8-rotor permanent magnet groove; The 9-rotor tooth; The 10-rotor conductor; The 11-rotor permanent magnet; The 12-rotating shaft; The 31-stator is measured tooth; The 311-stator is measured the tooth body; The 312-stator is measured the tooth boots; The 313-stator is measured the sector face; 314-detects winding wire slot.
Embodiment
Below in conjunction with in the accompanying drawing one embodiment of the present of invention being done further to describe:
As depicted in figs. 1 and 2, of the present invention from testing the speed permagnetic synchronous motor, comprise stator, rotor and rotating shaft 12; Said rotor comprises rotor core 6, and rotor core 6 is provided with a plurality of rotor slots 7, and the rotor slot 7 in the said rotor core 6 is opening or half opening; Be equipped with rotor conductor 10 in each rotor slot 7; Rotor core 6 between the rotor slot 7 is a rotor tooth 9, is provided with equally distributed even number bar shaped rotor permanent magnet groove 8 in the rotor core 6, shown in Fig. 1 is four; Be respectively equipped with four bar shaped rotor permanent magnets 11 in four bar shaped rotor permanent magnet grooves 8; Said stator comprises stator core 1; Evenly be provided with a plurality of stator power winding wire slots 2 that form a plurality of stator tooths 3 on the inner periphery of stator core 1; Be equipped with stator power winding 4 in each stator power winding wire slot 2; A tooth of setting in a plurality of stator tooths 3 on said stator core 1 inner periphery is measured tooth 31 as stator; On stator measurement tooth 31, be symmetrical set two and detect windings 5; Said stator is measured tooth 31 and is comprised stator measurement tooth body 311, and the right and left is provided with stator and measures tooth boots 312 on the stator measurement tooth body 311, and stator measurement tooth body 311 tops are provided with stator and measure sector face 313; Stator is measured tooth boots 312 and stator and is measured between the sector face 313 to be arranged with to the left and right along stalk and detect winding wire slot 314, detect winding 5 be positioned over detect winding wire slot 314 and with the stator power winding wire slot 2 that detects winding wire slot 314 correspondence positions in.
Operation principle:, so have the slot ripples magnetic-field component of corresponding rotor tooth 9 numbers in the air-gap field that produces of rotor permanent magnet 11 because rotor core 6 surfaces exist rotor tooth 9 and rotor slot 7.When certain rotor tooth 9 moves near detection winding 5; Passing the harmonic magnetic flux that detects winding 5 can increase; When rotor tooth 9 moves away from detection winding 5, pass the harmonic magnetic flux that detects winding 5 and can reduce, detect winding 5 and can induce the slot ripples electromotive force that frequency equates with rotor tooth 9 numbers.Utilize the slot ripples electromotive force frequency f that detects winding 5 inductions
zWith rotor tooth 9 number z
r, by formula:
Just can calculate spinner velocity n
r
In addition, when the rotor positive direction was rotated, the slot ripples electromotive force phase place that winding 5 inductions are detected in the left side was ahead of the slot ripples electromotive force phase place that winding 5 inductions are detected on the right side; When the rotor opposite spin, the slot ripples electromotive force phase place that winding 5 inductions are detected in the left side lags behind the slot ripples electromotive force phase place that winding 5 inductions are detected on the right side.Therefore, the slot ripples electromotive force phase relation of utilizing two detection windings 5 to respond to just can be judged the direction of rotation of rotor.
Owing to detect winding 5 and stator power winding 4 in spatial vertical, the magnetic flux that stator power winding 4 produces can be in not detecting winding 5 induced potential, therefore, detect the influence that the accuracy of detection of winding 5 is not changed by stator current can.
Claims (2)
1. one kind from the permagnetic synchronous motor that tests the speed; Comprise stator, rotor and rotating shaft (12); Said rotor comprises rotor core (6); Evenly be provided with a plurality of rotor slots (7) that form rotor tooth (9) on the excircle of rotor core (6); Be equipped with rotor conductor (10) in each rotor slot (7), be symmetrically distributed with even number permanent magnet trough (8) around rotating shaft (12) in the rotor core (6); Be equipped with rotor permanent magnet (11) in each rotor permanent magnet groove (8); Said stator comprises stator core (1), evenly is provided with a plurality of stator power winding wire slots (2) that form a plurality of stator tooths (3) on the inner periphery of stator core (1), is equipped with stator power winding (4) in each stator power winding wire slot (2); It is characterized in that: a tooth of setting in a plurality of stator tooths (3) on said stator core (1) inner periphery is measured tooth (31) as stator; On stator measurement tooth (31), be symmetrical set two and detect windings (5), said stator is measured tooth (31) and is comprised stator measurement tooth body (311), and the right and left inclined plane that stator is measured tooth body (311) is stator measurement tooth boots (312); It is that stator is measured sector face (313) that stator is measured tooth body (311) top, and stator is measured between tooth boots (312) and the stator measurement sector face (313) and is arranged with the detection winding wire slot (314) that placement detects winding (5) to the left and right along stalk.
2. according to claim 1 from testing the speed permagnetic synchronous motor, it is characterized in that: the rotor slot (7) in the said rotor core (6) is opening or half opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101893160A CN102694450A (en) | 2012-06-11 | 2012-06-11 | Speed self-measuring permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101893160A CN102694450A (en) | 2012-06-11 | 2012-06-11 | Speed self-measuring permanent magnet synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN102694450A true CN102694450A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101893160A Pending CN102694450A (en) | 2012-06-11 | 2012-06-11 | Speed self-measuring permanent magnet synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340002A (en) * | 2017-06-28 | 2017-11-10 | 西安微电机研究所 | A kind of small inertia limited angle sensor |
| CN110036561A (en) * | 2016-12-02 | 2019-07-19 | Arm有限公司 | Sensor error detection and correction |
| CN111654141A (en) * | 2020-06-03 | 2020-09-11 | 宁波大学 | Electromagnetic induction type bearing rotating speed measuring device and measuring method |
| GB2593888A (en) * | 2020-04-06 | 2021-10-13 | Safran Electrical & Power | An electrical machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001069696A (en) * | 1999-08-30 | 2001-03-16 | Toshiba Corp | Permanent magnet type synchronous motor |
| CN101330231A (en) * | 2007-06-19 | 2008-12-24 | 上海海立（集团）股份有限公司 | Permanent magnet motor stator and rotor for compressor |
| CN202652026U (en) * | 2012-06-11 | 2013-01-02 | 中国矿业大学 | Self-speed-measurement permanent magnet synchronous motor |
-
2012
- 2012-06-11 CN CN2012101893160A patent/CN102694450A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001069696A (en) * | 1999-08-30 | 2001-03-16 | Toshiba Corp | Permanent magnet type synchronous motor |
| CN101330231A (en) * | 2007-06-19 | 2008-12-24 | 上海海立（集团）股份有限公司 | Permanent magnet motor stator and rotor for compressor |
| CN202652026U (en) * | 2012-06-11 | 2013-01-02 | 中国矿业大学 | Self-speed-measurement permanent magnet synchronous motor |
Non-Patent Citations (1)
| Title |
|---|
| 李建军: "基于附加绕组位置检测高速永磁同步电机控制系统的研究", 《中国优秀硕士学位论文全文数据库》, 6 February 2009 (2009-02-06) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110036561A (en) * | 2016-12-02 | 2019-07-19 | Arm有限公司 | Sensor error detection and correction |
| CN107340002A (en) * | 2017-06-28 | 2017-11-10 | 西安微电机研究所 | A kind of small inertia limited angle sensor |
| CN107340002B (en) * | 2017-06-28 | 2021-07-06 | 西安微电机研究所 | Small inertia limited angle sensor |
| GB2593888A (en) * | 2020-04-06 | 2021-10-13 | Safran Electrical & Power | An electrical machine |
| CN111654141A (en) * | 2020-06-03 | 2020-09-11 | 宁波大学 | Electromagnetic induction type bearing rotating speed measuring device and measuring method |
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Application publication date: 20120926 |