CN105846579A - Permanent magnet reluctance motor - Google Patents
Permanent magnet reluctance motor Download PDFInfo
- Publication number
- CN105846579A CN105846579A CN201610325058.2A CN201610325058A CN105846579A CN 105846579 A CN105846579 A CN 105846579A CN 201610325058 A CN201610325058 A CN 201610325058A CN 105846579 A CN105846579 A CN 105846579A
- Authority
- CN
- China
- Prior art keywords
- motor
- rotor
- groove portion
- magnetic resistance
- permanent magnet
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a permanent magnet reluctance motor. The motor is characterized in that the motor comprises a rotor and a stator along the radial direction from the inside out. A number of magnetic isolation grooves are symmetrically arranged on each pole of the rotor in the radial direction of the motor. Each magnetic isolation groove comprises a first groove part and a second groove part. The normal direction of each first groove part is the radial direction of the motor, and a permanent magnet is embedded in a first groove part. The direction of each second groove part is along the direct axis direction of a flux linkage. According to the motor provided by the invention, reluctance torque is increased; speed adjustable range is expanded; the amount of permanent magnets is reduced; and short-circuit current is reduced.
Description
Technical field
The invention belongs to machine field, more particularly, to a kind of permanent magnetic resistance motor.
Background technology
Starting/generator is the principle of reversibility utilizing motor, allows airborne electromotor also serve as rising of electromotor
Motivation.Along with " the how electric and full electrification " of present generation aircraft technology develops, the flight on aircraft controls system
System, environmental control system, engine fuel/oil system, take off and the tradition such as brake system uses
The drive mechanism of hydraulic pressure, air pressure etc. all will progressively be replaced by electric transmission.Additionally, big along with aircraft
Type, load is more and more, and the power of aircraft main generator is the most increasing, can to its power supply
Requirement by property is more and more higher.
Several topological structure of existing motor are directed to the use of permanent magnet, and aviation starting-generating
Occasion proposes following requirement to motor:
1. without permanent magnet or less with permanent magnet, because the rotating speed of aircraft generator is the highest, temperature is too high
Permanent magnet can be caused to demagnetize, secondly, under short trouble permanent magnet cannot demagnetization, cause short circuit electricity
Flow bigger；
2. torque is big, and power is high, and volume is little, and therefore the torque density for aircraft generator requires the highest；
Owing to rotating speed is the highest, rotor structure should be tried one's best and simply be ensured rotor mechanical strength.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides a kind of permanent magnetic resistance
The rotor structure of motor, its object is to solve Conventional switched reluctance motor torque ripple big, controls
Complexity, the problem that magneto short circuit current is big and cost is high.This motor uses a small amount of permanent magnet solution
The problem that pure reluctance motor power factor of having determined is low.Utilize the weak magnetic property that reluctance motor is good simultaneously,
Wider invariable power scope can be had.
For achieving the above object, according to one aspect of the present invention, it is provided that a kind of permanent magnetic resistance electricity
Machine, it is characterised in that this motor includes the most from the inside to the outside: rotor, stator, Qi Zhongsuo
State rotor the most extremely to go up and arrange some magnet isolation tanks with the radial direction symmetry arrangement of described motor, each described
Magnet isolation tank includes the first groove portion and the second groove portion, and the normal direction in wherein said first groove portion is described
The radial direction of motor, is used for embedding permanent magnet, and the direction in described second groove portion is along magnetic linkage d-axis
Direction.
Further, the most through between the described magnet isolation tank often organizing symmetry, remain with one fixed width
Rib, it is achieved support rotor, subtract trochantinian centrifugal force.
Further, the width of described rib is directly proportional to the mechanical stress suffered by rotor core.
Further, protection sleeve is set between described rotor and described stator, is used for protecting described turning
Son is damaged by centrifugal force during high-speed cruising.
Further, angular range formed by described first groove portion and the second groove portion is 120 ° and arrives
Between 150 °.
Further, described second groove portion is at the non-through formation in described rotor outer magnetic bridge, it is achieved reduce
Leakage field..
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to
Obtain following beneficial effect:
(1) compared with magneto, simply used a small amount of permanent magnet, made reluctance torque become main
Torque, reduces cost, and permanent magnet consumption is few simultaneously, can reduce short circuit current during short trouble,
Steady-state shortcircuit current is made to drop to below rated current；
(2) compared with reluctance motor, add a small amount of permanent magnet, can improve power factor, simultaneously by
Magnetic property in permanent magnet preferably can improve torque and power density, it is also possible to reduces torque pulsation；
(3) utilize the weak magnetic property of reluctance motor, make this motor have wider speed adjustable range, be suitable for
High speed constant Power operation；
(4) add the protection sleeve of carbon fiber, make the mechanical strength of rotor have also been obtained guarantee, be suitable for
High-speed cruising.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the permanent magnetic resistance motor realized according to the present invention；
Fig. 2 is the motor rotor construction schematic diagram of the permanent magnetic resistance motor realized according to the present invention.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
1-stator 2-rotor 3-permanent magnet 4-sleeve 5-magnet isolation tank 6-rib 7-magnetic bridge
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, the present invention is further elaborated.Should be appreciated that described herein specifically
Embodiment only in order to explain the present invention, is not intended to limit the present invention.Additionally, it is disclosed below
Just may be used as long as technical characteristic involved in each embodiment of the present invention does not constitutes conflict each other
To be mutually combined.
The permanent magnet reluctance motor concrete structure that the present invention proposes is described as follows: motor 36 groove 6 pole, motor base
This composition includes stator-rotor iron core, permanent magnet, protects the parts such as sleeve, casing, end cap, axle, electricity
Machine population structure is as shown in Figure 1.
Wherein the overall structure of this permanent magnet reluctance motor includes the most from the inside to the outside: rotor 2, guarantor
Pretective sleeve pipe 4, and stator 1, its rotor 2 is embedded with permanent magnet 3.
By being fabricated to breach symmetrical on the rotor punching of every pole, form the hollow out of air, i.e. every
Magnetic groove 5, owing to the characteristic of air is unfavorable for passing of magnetic field, so on this direction i.e. d-axis direction
Magnetic resistance very big, and owing to not having magnet isolation tank 5 on quadrature axis direction, magnetic resistance is less, so that handing over
The ratio difference of axle inductance and d-axis inductance is very big, and salient pole ratio increases, and reluctance torque increases, and makes magnetic resistance
Torque becomes the major part of this motor total torque.And torque produced by permanent magnet 3 becomes secondary portion
Point, so can reduce the usage amount of permanent magnet 3, thus reach to reduce the effect of short circuit current, simultaneously
Can be cost-effective.The magnetizing direction of permanent magnet 3 radially, is i.e. perpendicular to the long limit of permanent magnet.Adjacent
The permanent magnet magnetizing direction at the two poles of the earth is contrary, and i.e. one radially (N pole), and one radially inward
(S pole).
Wherein the hollow out of this magnet isolation tank 5 includes two parts, and the hollow out of Part I 5-1 has been used for forever
The interspersed embedding of magnet 3, the hollow out of Part II 5-2 is mainly disposed on the d-axis direction of magnetic linkage, from
And increase quadrature axis inductance and the ratio of d-axis inductance, wherein, in embodiment that the present invention provides
On embodiment, the hollow out of Part II 5-2 is arranged along the d-axis direction of magnetic linkage, and permanent magnet
The normal direction of 3 is along the radial direction of motor, so that Part I and Part II with angle are
120 ° of modes to 150 ° of scopes form obtuse angle, within this angular range, cogging torque and turn
Square pulsation is less, so makes torque more smooth, and vibration and noise are less.
As in figure 2 it is shown, directly whole iron core is not cut out the when of arranging magnet isolation tank 5, but
Symmetrical two magnet isolation tank 5 intermediate formation rib 6, serves one the most diametrically and supports and turn
The effect of sub-iron core 2, thus reduce rotor edge subjected to stress, it is ensured that the mechanical strength of rotor 2,
Cutting out rotor core formation magnet isolation tank 5 when, leave a certain distance with the outward flange of rotor 2,
Thus defining magnetic bridge 7, this structure can be to make motor magnetic in the case of load at magnetic bridge 7 close
Very big, thus reach saturated, reduce leakage field.Permanent magnet 3 is embedded in the horizontal component of magnet isolation tank 5, by
The most therefore pcrmeability in permanent magnet material and air embeds permanent magnet 3 and can't change on d-axis direction
Magnetic resistance, therefore the salient pole of motor will not change than also, and reluctance torque will not reduce, and is simultaneously introduced forever
Magnet 3 can increase air gap flux density, thus improves torque and power factor.
Further, the permanent magnet arranged in the manner described above: the 1. material of protection sleeve 4 is all right
For metal, glass fibre etc. also can complete this invention；2. the shape of magnet isolation tank part is not limited to U-shaped,
The magnetic barrier of circular arc equally completes this invention；3. magnet steel (magnetic steel material is rare earth permanent-magnetic material,
Such as SmCo, neodymium iron boron etc.) number of plies is not limited to three layers, two-layer, the mesh that all can reach this invention such as four layers
's；4. other slot number cooperation such as 36/4,48/4,48/6 etc. can also complete this invention.
The permanent magnetic resistance motor realized according to the present invention, achieves following technical advantage:
(1) on rotor, cut out shape shown in 5, form magnet isolation tank 5, make d-axis magnetic field be difficult to pass through,
Increase direct axis reluctance, thus reduce d-axis inductance, corresponding quadrature axis inductance and d-axis inductance
Ratio increase, reluctance torque increase, the increase of salient pole ratio simultaneously also can make the weak of motor
Magnetic property increases, and velocity interval broadens.
(2) horizontal component at magnet isolation tank embeds permanent magnet 3, make the air gap flux density of motor not only by
The winding of stator produces, and permanent magnet 3 also can produce air gap flux density, so can improve electricity
The torque of machine and power factor.Permanent magnet 3 consumption is little simultaneously, when can reduce short circuit
Electric current.
(3) in the middle of the symmetrical both sides of magnet isolation tank, leave the rib of material identical with rotor core, rise
To supporting rotor core, reduce rotor stress, increase the effect of rotor mechanical strength.
(4) the protection sleeve made plus high-strength material outside rotor, protects rotor, makes this electricity
Machine is suitable for high-speed cruising.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention,
Not in order to limit the present invention, all made within the spirit and principles in the present invention any amendment, etc.
With replacement and improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a permanent magnetic resistance motor, it is characterised in that this motor wraps the most from the inside to the outside
Including: rotor (2), stator (1), wherein said rotor (2) is often extremely gone up with the radial direction side of described motor
Arranging some magnet isolation tanks (5) to symmetry arrangement, each described magnet isolation tank (5) includes the first groove portion (5-1)
And the second groove portion (5-2), the normal direction in wherein said first groove portion (5-1) is described motor
Radial direction, is used for embedding permanent magnet (3), and the direction in described second groove portion (5-2) is along magnetic linkage
D-axis direction.
2. permanent magnetic resistance motor as claimed in claim 1, it is characterised in that often organizing symmetry
Between described magnet isolation tank (5) the most through, remain with the rib (6) of one fixed width, it is achieved support rotor,
Subtract trochantinian centrifugal force.
3. permanent magnetic resistance motor as claimed in claim 2, it is characterised in that described rib (6)
Width be directly proportional to the mechanical stress suffered by rotor core.
4. the permanent magnetic resistance motor as described in any one in claim 1-3, it is characterised in that
Protection sleeve (4) is set between described rotor (2) and described stator (1), is used for protecting described turning
Son (2) is damaged by centrifugal force during high-speed cruising.
5. permanent magnetic resistance motor as claimed in claim 4, it is characterised in that described first groove portion
(5-1) and angular range formed by the second groove portion (5-2) is between 120 ° to 150 °.
6. permanent magnetic resistance motor as claimed in claim 5, it is characterised in that described second groove portion
(5-2) in the non-through formation in described rotor (2) outer magnetic bridge (7), it is achieved reduce leakage field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610325058.2A CN105846579A (en) | 2016-05-17 | 2016-05-17 | Permanent magnet reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610325058.2A CN105846579A (en) | 2016-05-17 | 2016-05-17 | Permanent magnet reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846579A true CN105846579A (en) | 2016-08-10 |
Family
ID=56592516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610325058.2A Pending CN105846579A (en) | 2016-05-17 | 2016-05-17 | Permanent magnet reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105846579A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329774A (en) * | 2016-09-14 | 2017-01-11 | 南京航空航天大学 | Multilayer segmented built-in permanent magnet synchronous motor used for electric automobile driving |
| CN107994699A (en) * | 2017-11-23 | 2018-05-04 | 东南大学 | A kind of rotor structure for improving permanent magnet of permanent magnet motor and resisting irreversible degaussing ability |
| CN109193987A (en) * | 2018-11-23 | 2019-01-11 | 黑龙江大学 | Anti- salient pole lacks Rare-earth PMSM Rotor Structure |
| CN109639001A (en) * | 2018-12-28 | 2019-04-16 | 苏州英磁新能源科技有限公司 | A kind of rotor for synchronous magnetic resistance motor |
| CN109768645A (en) * | 2019-02-14 | 2019-05-17 | 河北工业大学 | A kind of permanent magnet assist type synchronous magnetic resistance motor rotor structure and its design method |
| WO2023124152A1 (en) * | 2021-12-27 | 2023-07-06 | 华为数字能源技术有限公司 | Rotor core, rotor, motor, motor driving system and electric vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090224624A1 (en) * | 2008-03-06 | 2009-09-10 | Ajith Kuttannair Kumar | Rotor structure for interior permanent magnet electromotive machine |
| KR20100125051A (en) * | 2009-05-20 | 2010-11-30 | 한양대학교 산학협력단 | Rotor used in interior permanent magnet synchronous motor |
| CN103199642A (en) * | 2011-12-13 | 2013-07-10 | 三星电子株式会社 | Motor |
| CN204615530U (en) * | 2015-05-12 | 2015-09-02 | 河北工业大学 | A kind of ALA rotor structure of synchronous magnetic resistance motor |
| CN204794628U (en) * | 2015-07-23 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Synchronous reluctance machine and compressor |
-
2016
- 2016-05-17 CN CN201610325058.2A patent/CN105846579A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090224624A1 (en) * | 2008-03-06 | 2009-09-10 | Ajith Kuttannair Kumar | Rotor structure for interior permanent magnet electromotive machine |
| KR20100125051A (en) * | 2009-05-20 | 2010-11-30 | 한양대학교 산학협력단 | Rotor used in interior permanent magnet synchronous motor |
| CN103199642A (en) * | 2011-12-13 | 2013-07-10 | 三星电子株式会社 | Motor |
| CN204615530U (en) * | 2015-05-12 | 2015-09-02 | 河北工业大学 | A kind of ALA rotor structure of synchronous magnetic resistance motor |
| CN204794628U (en) * | 2015-07-23 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Synchronous reluctance machine and compressor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329774A (en) * | 2016-09-14 | 2017-01-11 | 南京航空航天大学 | Multilayer segmented built-in permanent magnet synchronous motor used for electric automobile driving |
| CN107994699A (en) * | 2017-11-23 | 2018-05-04 | 东南大学 | A kind of rotor structure for improving permanent magnet of permanent magnet motor and resisting irreversible degaussing ability |
| CN109193987A (en) * | 2018-11-23 | 2019-01-11 | 黑龙江大学 | Anti- salient pole lacks Rare-earth PMSM Rotor Structure |
| CN109639001A (en) * | 2018-12-28 | 2019-04-16 | 苏州英磁新能源科技有限公司 | A kind of rotor for synchronous magnetic resistance motor |
| CN109768645A (en) * | 2019-02-14 | 2019-05-17 | 河北工业大学 | A kind of permanent magnet assist type synchronous magnetic resistance motor rotor structure and its design method |
| WO2023124152A1 (en) * | 2021-12-27 | 2023-07-06 | 华为数字能源技术有限公司 | Rotor core, rotor, motor, motor driving system and electric vehicle |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |
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| RJ01 | Rejection of invention patent application after publication |