CN102710041A - Multiphase permanent-magnetic direct-current adjustable-speed motor - Google Patents
Multiphase permanent-magnetic direct-current adjustable-speed motor Download PDFInfo
- Publication number
- CN102710041A CN102710041A CN2012101112236A CN201210111223A CN102710041A CN 102710041 A CN102710041 A CN 102710041A CN 2012101112236 A CN2012101112236 A CN 2012101112236A CN 201210111223 A CN201210111223 A CN 201210111223A CN 102710041 A CN102710041 A CN 102710041A
- Authority
- CN
- China
- Prior art keywords
- motor
- pair
- magnetic
- rotor
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention belongs to permanent-magnetic motor products, and particularly relates to a multiphase permanent-magnetic direct-current adjustable-speed motor which aims at solving problems of power speed adjusting and variable power output and is applicable to modern digital control technologies. The multiphase permanent-magnetic direct-current adjustable-speed motor is characterized in that a cylindrical rotator is disposed in a shell of the motor, and a symmetric iron stator core and a fixed shaft are fixedly mounted at the center of the motor which is driven by direct current and is multipolar. A stator below each pair of poles is provided with a multiphase winding, the spaces and numbers of turns of winding are coincident, and a pair of embedded rare-earth permanent magnets or telescopic ferrite magnetic poles is arranged on an inner side on the rotator. According to instructions, a control and protect circuit can turn on a power switch tube and adjust rotating direction and output power, and measuring and protection elements are distributed in a system and respectively connected onto the control circuit. The multiphase permanent-magnetic direct-current adjustable-speed motor is high in automation level, low in loss and cost and wide in usable range.
Description
Technical field:
The heterogeneous formula DC of the present invention buncher belongs to the product of magneto class, be specifically related to a kind of in order to solve the power speed governing and to become power output, and the AC permanent magnet buncher of the suitable modern digital control technology of releasing..
Background technology:
Progress along with modernization industry; The range of application of motor be extensively and demand huge; But motor that prior art provided or magneto can not satisfy some special requirements, on the equipment that directly drives like needs, like the driving wheel and the elevator hoist of electric motor car; In some special-purpose machineries, like automobile, weaving loom, spacecraft; In many precision instrument and equipments; Make auxiliary element or the like and all be badly in need of working method more flexibly, more elasticity, speed can stepless variation and the minimum relatively New-type electric machines of loss to power requirement, development new technologies and equipment satisfy industrial needs so that people have in institute.
Summary of the invention:
. the purpose of the heterogeneous formula DC of the present invention buncher is: for solving urgent problem in the above-mentioned prior art; Thereby provide a kind of by dc powered; The center that the stator core and the fixed axis of shell that columniform rotor is placed in motor and symmetry fixedly is loaded on motor, working method is more flexible, to power requirement elasticity more; Speed can steplessly change, and loss is the technical scheme of minimum heterogeneous formula DC buncher relatively..
. the heterogeneous formula DC of the present invention buncher; It is characterized in that it being that a kind of shell of motor rotates; Inner iron core is the dc speed-regulating motor of fixing with axle; The center that the shell that this motor places motor with columniform rotor and the stator core and the fixed axis of symmetry then fixedly are loaded on motor is by dc powered.For example every pair is extremely played the six phase winding is arranged on the stator, consistent with the number of turn at interval, and the electrical centre angle of every two-phase winding is 60 degree.There are Embedded dove-tail form (also watt type, rectangle etc.) one pair of rare-earth permanent magnet or telescopic ferrite magnetic pole in the inboard on the rotor.According to instruction, the power switch pipe is opened in control and protection loop, and adjustment rotation direction and power output are measured and protection component is distributed in the system, get in touch to control loop.The shell rotor is extremely to play the magnetic field in the stator air gap to rotate by every pair of dc powered.
Above-mentioned heterogeneous formula DC buncher is characterized in that describedly having every pair of number of phases of extremely playing polyphase windings can be arranged on the stator to be: three, four, six or nine phases.
Above-mentioned heterogeneous formula DC buncher is characterized in that described ferrite is all-in-one-piece die casting structure, and uses the press casting procedure orientation process, to strengthen the magnetic field intensity of pole orientation.
Above-mentioned heterogeneous formula DC buncher when it is characterized in that the Embedded dove-tail form of described employing (also watt type, rectangle etc.) rare-earth permanent magnet, in order to reduce cost, is given full play to the magnetic property of high magnetic material, adopts neodymium iron boron magnetic material.Also available other permanent magnetic material.
Above-mentioned heterogeneous formula DC buncher is characterized in that the inboard area and the thickness of described rare-earth permanent magnet, decides according to design of electrical motor, and the iron core of rotor uses that silicon steel sheet laminates, ironcasting or stamping parts..
The advantage of the heterogeneous formula DC of the present invention buncher is: its system can be according to instruction, and the power switch pipe can be opened, adjustment rotation direction and power output in control and protection loop.Measure and protection component, be distributed in the system, get in touch to control loop.Automaticity is high, and loss is little, and cost is low, and the scope of application is wide.Because this motor uses dc powered, with respect to general AC frequency conversion control motor, it has, and following advantage---control appliance is simple, lacks 1/3rd than AC frequency conversion equipment, and is more reliable; Speed adjustable range is wide, and like 0 to 4000 commentaries on classics, starting current is little; Do not need mechanical gear shift device; Reduce the reactive power 45% of AC-DC-AC power source conversion, lower loss more than 20%; Can be widely used in speed change, become the non-constant speed environment for use of shaft power, like electric motor car, elevator, belt feeder, ship etc.If it is used on the belt feeder, it just could directly drive belt, has removed mechanical gear box from, reduces cost loss and cost for example!
Description of drawings:This paper will be that example is explained with the evolute six phase formula winding permanent magnet DC motor of a pair of utmost point.
One. electric machine structure
1. outside rotor structure
If a. with ferrite or when being mixed with the reinforcement ferrite of rare earth permanent-magnetic material, its following form-
Fig. 1 is a rotor ferrite sketch map
Wherein, (a) _ _ _ the ferrite bead tube;
(b) _ _ _ the irony iron core of rotor;
(c) _ _ _ synthetic effect of magnet ring and iron core.
Iron oxygen iron is all-in-one-piece die casting structure, and uses the press casting procedure orientation process.To strengthen the magnetic field intensity of pole orientation.
If when b. adopting rare earth permanent magnet, like neodymium iron boron magnetic material, be in order to reduce cost, to give full play to the magnetic property of high magnetic material,
Fig. 2 is outside rare-earth permanent magnet sketch map
Wherein, (a) _ _ a pair of rare-earth permanent magnet of dovetail arranged;
(b) _ _ _ rotor core (available silicon steel sheet build press) of dovetail groove arranged;
(c) shell of----rotor;
(d)--the synthetic effect of-rare-earth permanent magnet and iron core
C. when the power of appraising and deciding of motor, voltage after number of pole-pairs etc. are definite, can do in the hope of the surface magnetic flux density of permanent magnet
B?=?K(/S?)=?K/（RL）=?K?C?/
Wherein,---each magnetic flux to air gap under the magnetic pole;
S---each is to the surface area of each permanent magnet in air gap under the magnetic pole;
The inside radius of R---rotor (containing magnet part);
The axial length of L---rotor core;
C--area coefficient in the-permanent magnet air gap;
K---motor gas-gap magnetic flux coefficient;
--the fan-shaped angle of-permanent magnet.
By the magnetic energy product and the BH curve of permanent magnetic material, can confirm that permanent magnet is in the radial direction minimum thickness.
2. stator winding
Its electric little span sketch map as follows-
The stator six phase formula winding at Fig. 3 center
The electrical centre angle of every two-phase winding is 60 degree among the figure.Stator core is that the silicon steel sheet base is pressed into, with the similar of general motor.
3. operation principle
When through suitably arrange winding around to and the number of turn, and let direct current in regular turn through (1-4) → (2-5) →
When (3-6) → (4-1) → (5-2) → (6-3) passing winding, motor stator winding can produce in air gap
A magnetic field that turns clockwise.Under it drives, the rotor of motor also will turn clockwise.
Its working principles as follows-
Fig. 4 evolute machine operation sketch map
The rotating speed of rotor will with air-gap field in same direction, also rotate with synchronizing speed.Can regulate the turn-on frequency of the electric current of stator, size of current and direction, the rotating speed of change rotor turns to and power output.
Two. circuit for controlling motor
For motor is normally moved, it is necessary introducing necessary power electronic equipment.This circuit comprises DC power supply, the stator winding at center, and the switched power pipe, monitoring element, rotating speed and position monitoring, protection and control loop, commands for controlling partly waits parts.
Its switch reduced graph is following---
Fig. 5. direct current power main system figure
Wherein, the winding and the sequence number of 1,2,3,4,5,6----stator;
1a, 2a, 3a, 4a, 5a, 6a----stator winding forward conduction power switch pipe;
1b, 2b, 3b, 4b, 5b, 6b----reversing stator winding conducting power switch pipe;
1c, 2c, 3c, 4c, 5c, the control line of 6c----stator winding switching tube;
Wi----rotor-position and rotation speed monitoring equipment;
The monitoring of Ii----supply voltage;
The monitoring of Vi----source current.
A class and b class electric power pipe can be thyristors, general power switch pipe such as FET.Rotor monitoring can be an electric capacity, laser, or method such as mole element.
Embodiment:
Execution mode 1:Columniform rotor is placed in the shell of motor, and the center that the stator core of symmetry and fixed axis then fixedly are loaded on motor is by dc powered.Every pair is extremely played the six phase winding is arranged on the stator, consistent with the number of turn at interval, and the electrical centre angle of every two-phase winding is 60 degree.There is the rare-earth permanent magnet of Embedded dove-tail form (or watt type, square type) neodymium iron boron magnetic material the inboard on the rotor.According to instruction, the power switch pipe is opened in control and protection loop, and adjustment rotation direction and power output are measured and protection component is distributed in the system.Every pair of number of phases of extremely playing polyphase windings is arranged on the stator is 6 phases, and the iron core of stator uses silicon steel sheet to laminate.The iron core of rotor uses silicon steel sheet (ironcasting or stamping parts) to laminate.When the power of appraising and deciding of motor, voltage, numbers of pole-pairs etc. after confirming can be in the hope of the surface magnetic flux density of permanent magnet:
B?=?K(/S?)=?K/（RL）=?K?C?/
Wherein,---each magnetic flux to air gap under the magnetic pole;
S---each is to the surface area of each permanent magnet in air gap under the magnetic pole;
The inside radius of R---rotor (containing magnet part);
The axial length of L---rotor core;
C--area coefficient in the-permanent magnet air gap;
K---motor gas-gap magnetic flux coefficient;
--the fan-shaped angle of-permanent magnet.
By the magnetic energy product and the BH curve of permanent magnetic material, confirm that permanent magnet is in the radial direction minimum thickness.For motor is normally moved, it is necessary introducing necessary power electronic equipment.They are divided into power switch loop and control loop again.This circuit comprises DC power supply, the stator winding at center, and the switched power pipe, monitoring element, rotating speed and position monitoring, protection and control loop, commands for controlling partly waits parts.
Execution mode 2:Every pair of number of phases of extremely playing polyphase windings is arranged on the stator is 9 phases, and the iron core of rotor uses silicon steel sheet (ironcasting or stamping parts) to laminate, and other is with execution mode 1.
Execution mode 3:Every pair of number of phases of extremely playing polyphase windings is arranged on the stator is 3 phases, and the iron core of rotor uses ironcasting (silicon steel sheet or stamping parts), and other is with execution mode 1.
Execution mode 4:Every pair of number of phases of extremely playing polyphase windings is arranged on the stator is 4 phases, and the iron core of rotor uses stamping parts (ironcasting or silicon steel sheet), and other is with execution mode 1.
Claims (4)
1. heterogeneous formula DC buncher; It is characterized in that it being that a kind of shell of motor rotates; Inner iron core is the dc speed-regulating motor of fixing with axle, and this motor places the shell of motor with columniform shell rotor, and stator core symmetrical with it and fixed axis are loaded on the center of motor; Can be provided with somely to the utmost point on its described stator core, its every pair utmost point has polyphase windings, and is consistent with the number of turn at interval, and the number of degrees of the electrical centre angle of every two-phase winding change definite with the winding number of phases; Inboard every pair of utmost point has the ferrite magnetic pole of Embedded dove-tail form, watt type or one pair of rectangle rare-earth permanent magnet or telescopic, watt type or square type on its described shell rotor; The power switch pipe is opened in control and protection loop; Adjustment rotation direction and power output, its shell rotor are extremely to play the magnetic field in the stator air gap to rotate by every pair of dc powered.
2. according to the said heterogeneous formula DC buncher of claim 1, it is characterized in that described every pair of number of phases of extremely playing stator to be provided with polyphase windings can be: two, three, four, six or nine phases.
3. according to the said heterogeneous formula DC buncher of claim 1, it is characterized in that described ferrite is all-in-one-piece die casting structure, and use the press casting procedure orientation process, to strengthen the magnetic field intensity of pole orientation.
4. according to the said heterogeneous formula DC buncher of claim 1, it is characterized in that the inboard area and the thickness of described rare-earth permanent magnet, decide according to design of electrical motor, can be to be shaped as a watt type, square type or dove-tail form; The iron core of rotor can use that silicon steel sheet laminates, ironcasting or stamping parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101112236A CN102710041A (en) | 2012-07-24 | 2012-07-24 | Multiphase permanent-magnetic direct-current adjustable-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101112236A CN102710041A (en) | 2012-07-24 | 2012-07-24 | Multiphase permanent-magnetic direct-current adjustable-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102710041A true CN102710041A (en) | 2012-10-03 |
Family
ID=46902653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101112236A Pending CN102710041A (en) | 2012-07-24 | 2012-07-24 | Multiphase permanent-magnetic direct-current adjustable-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102710041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539128A (en) * | 2015-01-04 | 2015-04-22 | 太原理工大学 | Multi-phase permanent magnet direct current motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201263117Y (en) * | 2008-09-01 | 2009-06-24 | 杭州新星光电有限公司 | Minitype permanent-magnet brushless DC motor |
| CN201839145U (en) * | 2010-11-08 | 2011-05-18 | 常州奥立思特电子有限公司 | Permanent magnet direct current motor |
-
2012
- 2012-07-24 CN CN2012101112236A patent/CN102710041A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201263117Y (en) * | 2008-09-01 | 2009-06-24 | 杭州新星光电有限公司 | Minitype permanent-magnet brushless DC motor |
| CN201839145U (en) * | 2010-11-08 | 2011-05-18 | 常州奥立思特电子有限公司 | Permanent magnet direct current motor |
Non-Patent Citations (1)
| Title |
|---|
| 程开业等: "外旋式六相永磁直流电机原理分析", 《电力学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539128A (en) * | 2015-01-04 | 2015-04-22 | 太原理工大学 | Multi-phase permanent magnet direct current motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105245073B (en) | Stator permanent magnetic type double-salient-pole disc type electric machine | |
| US10541578B2 (en) | Permanent magnet electric machine with moveable flux-shunting elements | |
| US20150364978A1 (en) | Electric Machine | |
| CN104410204A (en) | Novel flywheel energy storage device | |
| CN105006933B (en) | External stator magnetic pole parallel type hybrid excitation composite motor | |
| WO2013008838A1 (en) | Power generating device | |
| CN102904405B (en) | Birotor synchronous generator | |
| CN103997176A (en) | Bearingless brushless direct-current motor and levitation force control method | |
| CN104467333B (en) | Rotor excitation multi-phase reluctance motor and control method thereof | |
| KR101091436B1 (en) | Permanent magnet motor | |
| CN104124791A (en) | Momentum wheel based on annular motor | |
| CN203491867U (en) | Mixed excitation doubly salient permanent magnet motor | |
| CN104104197B (en) | A kind of axial permanent magnetic offset hybrid magnetic bearing switched reluctance machines | |
| CN210405045U (en) | Axial parallel composite motor | |
| CN104506005A (en) | Wheel hub type permanent magnet motor of electric car | |
| CN103915973A (en) | Disc magnetic field modulation type AC permanent magnet gear motor | |
| CN102710041A (en) | Multiphase permanent-magnetic direct-current adjustable-speed motor | |
| CN103490580A (en) | Hybrid excitation doubly salient permanent magnet motor | |
| RU2600311C2 (en) | Electric machine | |
| CN104124847B (en) | A kind of momenttum wheel based on moving-coil motor | |
| CN104901508B (en) | A kind of Linear-rotation permanent-magnet actuator and control method using consequent pole structure | |
| CN102651594A (en) | Switched reluctance generator with C-shaped stator cores | |
| CN203775101U (en) | Alternating current variable frequency induction brushless excitation system of synchronous motor | |
| RU2414793C1 (en) | Non-contact modular magnetoelectric machine | |
| CN101841210A (en) | Constant frequency and constant voltage sine-wave power unit consisting of axle generator and inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |