CN109155552A - Rotating electric machine - Google Patents
Rotating electric machine Download PDFInfo
- Publication number
- CN109155552A CN109155552A CN201780026233.0A CN201780026233A CN109155552A CN 109155552 A CN109155552 A CN 109155552A CN 201780026233 A CN201780026233 A CN 201780026233A CN 109155552 A CN109155552 A CN 109155552A
- Authority
- CN
- China
- Prior art keywords
- magnet
- component
- electric machine
- rotating electric
- rotor
- 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.)
- Granted
Links
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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The object of the present invention is to provide a kind of rotating electric machines for improving efficiency when high speed rotation.Rotating electric machine of the invention is the rotating electric machine for including rotor and stator, the rotor includes the multiple magnet arranged along the rotary axis direction of the rotor, it forms the iron core for the receiving portion for accommodating the magnet and configure in described accommodation section multiple clamps component, the multiple coefficient of thermal expansion for clamping component is greater than the coefficient of thermal expansion of the iron core, the multiple one for clamping component contacts with a magnet in the multiple magnet that the rotary axis direction arranges, the multiple another of component of clamping is contacted with another magnet in the multiple magnet that the rotary axis direction arranges.
Description
Technical field
The present invention relates to a kind of rotating electric machine more particularly to a kind of structures of the rotor of permanent-magnet rotary electric machine.
Background technique
Permanent-magnet rotary electric machine has induction due to generating magnetic field by the permanent magnet of setting in the rotor
Voltage increased characteristic with the increase of revolving speed.The case where this rotating electric machine to be used to the drive motor for electric vehicle
Under, when the induced voltage that rotating electric machine generates is more than the supply voltage of electrical storage device, then revolving speed not can be further improved.Cause
This, circulation generates the electric current for offsetting the magnetic field in magnetic field caused by magnet to reduce induced voltage in the stator coils
" weak magnetic control " is widely carried out.
But weak magnetic control in addition to control it is complicated other than, using not directly contributing to output also from limited power supply
Reactive current, therefore there is the problems such as efficiency reduction.
Then, a variety of designs of the revolving speed without executing weak magnetic control for improving permanent-magnet rotary electric machine are come up with,
Such as have in patent document 1 and patent document 2 etc. disclosed.
In patent document 1, identical effect is controlled with weak magnetic in order to obtain, and is embedded in the internal rotor of motor forever
The rotor circumferential end of magnet is disposed adjacently magnetic substance piece contact separation mechanism, when revolving speed is high, magnetic substance piece contact point
Disembark structure magnetic substance piece contact rotor bridge part inner surface, and the magnetic substance piece does not connect with bridge part when revolution is low
Touching.
In addition, in patent document 2, rotor for dynamo-electric machine includes: the rotor core that can be rotated；Multiple permanent magnets,
They are respectively inserted to the multiple magnet insertion holes being provided in rotor core；And magnetic flux shorting members, respectively by
It is configured in the multiple magnetic flux barriers opened up between the adjacent magnet insertion holes of rotor core, and is formed from adjacent permanent magnetism
One the first best of iron another the second pole magnetic flux channel.Magnetic flux shorting members at least part is stretched by super mangneto
Compression material is constituted, in rotor high speed rotation, make magnetic conductivity compared to low speed rotation when of the magnetic conductivity of giant magnetostrictive material and
Speech improves, and increases the short circuit flux from the first pole to the second pole, thereby reduces magnetic flux when high speed rotation.
But patent document 1 and patent document 2 in order to change magnetic flux are required to that complicated mechanism is arranged in rotor,
Have the decline of manufacturability, the worry of long-term reliability.
[existing technical literature]
[patent document]
[patent document 1] Japanese Patent Laid-Open 2012-50292 bulletin
[patent document 1] Japanese Patent Laid-Open 2003-135075 bulletin
Summary of the invention
[problems to be solved by the invention]
Problem of the invention is to provide a kind of rotating electric machine for improving efficiency when high speed rotation.
[technical means to solve problem]
To solve the above-mentioned problems, rotating electric machine of the invention is the rotating electric machine for including rotor and stator, the rotor
Multiple magnet, formation including the rotary axis direction arrangement along the rotor accommodate iron core and the configuration of the receiving portion of the magnet
Multiple in described accommodation section clamp component, and the multiple coefficient of thermal expansion for clamping component is greater than the thermal expansion of the iron core
Rate, the multiple one for clamping component connect with a magnet in the multiple magnet that the rotary axis direction arranges
Touching, the multiple another and another magnet in the multiple magnet that the rotary axis direction arranges for clamping component
Contact.
[The effect of invention]
In accordance with the invention it is possible to provide a kind of electric rotating in simple structure improving just efficiency when high speed rotation
Machine.
Detailed description of the invention
Fig. 1 is with the plane parallel with rotary shaft come the sectional view of the rotating electric machine 10 of the first embodiment intercepted.
Fig. 2 is with the section of the rotor of the rotating electric machine 10 as shown in Figure 1 intercepted perpendicular to the face A-A of rotary shaft
Figure.
Fig. 3 be with perpendicular to rotary shaft the face B-B and the face C-C turn the rotating electric machine 10 as shown in Figure 1 that intercepts
The sectional view of son 30.
Fig. 4 indicates the induced voltage of the electrical angle relative to rotating electric machine 10.
Fig. 5 indicates the torque pulsation of the electrical angle relative to rotating electric machine 10.
Fig. 6 indicates the cogging torque of the electrical angle relative to rotating electric machine 10.
Fig. 7 is the sectional view for indicating the rotary shaft of rotor 30 of the rotating electric machine perpendicular to second embodiment.
Fig. 8 is the sectional view for indicating the rotary shaft of rotor 30 of the rotating electric machine perpendicular to 3rd embodiment.
Fig. 9 is the vertical cross-section diagram of the rotary shaft of the rotor 30 of fourth embodiment.
Specific embodiment
In the following, being illustrated using attached drawing to the embodiment of the present invention.
In addition, in the following description, using the drive motor of electric vehicle as an example of rotating electric machine.
Embodiment 1
Fig. 1 is with the plane parallel with rotary shaft come the sectional view of the rotating electric machine 10 of the first embodiment intercepted.Fig. 2 is
With the sectional view of the rotor of the rotating electric machine 10 as shown in Figure 1 intercepted perpendicular to the face A-A of rotary shaft.
Stator 20 includes stator core 21 and stator winding coil 23.Stator core 21 is provided with stator slot in the axial direction
22.Stator winding coil 23 is wrapped on stator slot 22.
Rotor 30 is made of the rotor core 31 being fixed on axis 36 and the permanent magnet 32 being embedded in magnet receiving portion 33,
The magnet receiving portion 33 is formed in rotor core.
Shell 40 keeps stator 20.Bearing 41 rotatably supports rotor 30.Bracket 42 keeps bearing 41.In addition, though
Has the liquid-cooled jacket 43 for stator 20 cooling in shell 40 in Fig. 1, but it is not absolutely required to have liquid-cooled jacket.
Fig. 3 be with perpendicular to rotary shaft the face B-B and the face C-C turn the rotating electric machine 10 as shown in Figure 1 that intercepts
The sectional view of son 30.
Arrow in figure indicates when the temperature of rotor 30 increases, and permanent magnet 32 in magnet receiving portion 33 due to filling
Clamp the thermal expansion of component (first clamps component 34, second clamps component 35) and the direction of movement.
The magnet receiving portion 33 being arranged in rotor core 31 is formed as bigger than permanent magnet 32, and especially in circumferential direction (magnetic
Iron width direction) magnetic flux barrier for making magnetic flux short circuit is set on both ends.In the magnetic flux barrier in magnet receiving portion 33, it is
Holding permanent magnet and fill first and clamp component 34 and second clamp component 35.
First, which clamps component 34, is arranged to the heat that first coefficient of thermal expansion for clamping component 34 clamps component greater than second
Expansion rate.Further, exchange filling first clamps component 34 and second and clamps component 35 on section B-B and the section C-C
Position.
The moving direction of permanent magnet 32 after temperature rises as a result, is opposite each other, and the relative position edge of permanent magnet 32
Rotary axis direction deviates.It obtains and effect identical when making 30 skew of rotor, and induced electricity when can reduce high speed rotation
Pressure.
It shows in Fig. 4~Fig. 6 and is found out by magnetic field analysis using induced voltage, torque brought by present embodiment
The obtained result of reducing effect of pulsation and cogging torque.Fig. 4 indicates the induction of the electrical angle relative to rotating electric machine 10
Voltage.Fig. 5 indicates the torque pulsation of the electrical angle relative to rotating electric machine 10.Fig. 6 indicates the electric angle relative to rotating electric machine 10
The cogging torque of degree.The case where solid line is all using present embodiment in the drawings.It, can by applying present embodiment
50% can be reduced by about by confirming induced voltage and capable of being reduced by about 10%, torque pulsation, and cogging torque can be reduced by about 55%.
In addition, although the stator 20 of first embodiment is stator of the concentratred winding but it is also possible to be Distributed Winding.Like this
The effect of present embodiment can be independently obtained with the concentratred winding of stator, Distributed Winding.
Embodiment 2
The section of the rotary shaft of the rotor 30 perpendicular to the rotating electric machine of the second embodiment of the present invention is shown in FIG. 7
Figure.In a second embodiment, the outside diameter that component 34 is filled in permanent magnet 32 is clamped by first, clamps component 35 for second and fills
In the internal side diameter of permanent magnet 32.First coefficient of thermal expansion for clamping component 34 is greater than the second coefficient of thermal expansion for clamping component 35, and
Can be risen when rotating at high speed by temperature keeps permanent magnet 32 mobile to internal diameter side.Permanent magnet 32 and stator are expanded as a result,
The distance between winding coil 23 so as to reduce magnetic flux, therefore can obtain induced voltage when reducing high speed rotation
Effect.
Embodiment 3
The sectional view of the rotary shaft of the rotor 30 perpendicular to the rotating electric machine of 3rd embodiment is shown in FIG. 8.This reality
It applies example and is omitted the second of first embodiment and clamp component 35.At this point, being greater than the heat of rotor core 31 by selection coefficient of thermal expansion
The material of expansion rate clamps component 34 as first, the thermal expansion that permanent magnet 32 clamps component 34 due to first when temperature rises
Rate and into figure, arrow direction is mobile.It is identical with the first embodiment as a result, reduction induced voltage when high speed rotation can be obtained
Effect.
Embodiment 4
Fig. 9 is the vertical cross-section diagram of the rotary shaft of the rotor 30 of fourth embodiment.
In first embodiment into 3rd embodiment, although the shape for the magnet receiving portion 33 being arranged in rotor core 31
To be parallel, but V-shaped can also be illustrated in figure 9.
Symbol description
10: rotating electric machine, 20: stator, 21: stator core, 22: stator slot, 23: stator winding coil, 30: rotor, 31:
Rotor core, 32: permanent magnet, 33: magnet receiving portion, clamp component at 34: the first, and clamp component at 35: the second, and 36: axis, 40: shell
Body, 41: bearing, 42: bracket, 43: liquid-cooled jacket.
Claims (4)
1. a kind of rotating electric machine comprising rotor and stator, the rotating electric machine be characterized in that,
The rotor includes the multiple magnet arranged along the rotary axis direction of the rotor, forms the receiving portion for accommodating the magnet
It iron core and configures multiple in described accommodation section and clamps component,
The multiple coefficient of thermal expansion for clamping component is greater than the coefficient of thermal expansion of the iron core,
The multiple one for clamping component connects with a magnet in the multiple magnet that the rotary axis direction arranges
Touching,
The multiple another and another magnetic in the multiple magnet that the rotary axis direction arranges for clamping component
Iron contact.
2. rotating electric machine according to claim 1, which is characterized in that
The multiple one for clamping component is clamped component the first of the circumferential side of one magnet and is matched by configured
It sets and clamps component composition the second of the circumferential other side of one magnet,
The multiple another of component of clamping clamps component by the third configured in the circumferential side of another magnet
Component is clamped the 4th of the circumferential other side of another magnet with configuration to constitute,
Described first coefficient of thermal expansion for clamping component is greater than the described second coefficient of thermal expansion for clamping component,
Described 4th coefficient of thermal expansion for clamping component is greater than the coefficient of thermal expansion that the third clamps component.
3. rotating electric machine according to claim 1, which is characterized in that
Described accommodation section is formed with multiple, forms V-shaped by multiple receiving portion.
4. a kind of rotating electric machine comprising rotor and stator, the rotating electric machine is characterized in that,
The rotor includes: magnet；Iron core forms the receiving portion for accommodating the magnet；First clamps component, configures in institute
It states in receiving portion and is configured on the position than the magnet outer peripheral side radially；And second clamp component,
Configuration is in described accommodation section and is configured at radially than the magnet on the position of more inner circumferential side,
Described first coefficient of thermal expansion for clamping component is greater than the described second coefficient of thermal expansion for clamping component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016102942A JP6685175B2 (en) | 2016-05-24 | 2016-05-24 | Rotating electric machine |
| JP2016-102942 | 2016-05-24 | ||
| PCT/JP2017/015840 WO2017203907A1 (en) | 2016-05-24 | 2017-04-20 | Rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109155552A true CN109155552A (en) | 2019-01-04 |
| CN109155552B CN109155552B (en) | 2020-07-21 |
Family
ID=60411792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780026233.0A Active CN109155552B (en) | 2016-05-24 | 2017-04-20 | Rotor of rotating electric machine and rotating electric machine using the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6685175B2 (en) |
| CN (1) | CN109155552B (en) |
| WO (1) | WO2017203907A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365144A (en) * | 2019-07-18 | 2019-10-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor and compressor |
| CN110380543A (en) * | 2019-08-07 | 2019-10-25 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor assembly, motor, compressor |
| CN111509886A (en) * | 2020-04-15 | 2020-08-07 | 重庆三峡学院 | Multifunctional temperature control heating system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267943A (en) * | 1997-07-22 | 2000-09-27 | 松下电器产业株式会社 | Motor with rotor containing inner permanent magnet |
| JP2004343842A (en) * | 2003-05-13 | 2004-12-02 | Denso Corp | Rotor for electric rotating machine |
| CN1825734A (en) * | 2005-02-24 | 2006-08-30 | 丰田自动车株式会社 | Rotor and method of manufacturing the same |
| JP2009232525A (en) * | 2008-03-21 | 2009-10-08 | Toyota Motor Corp | Rotor for ipm motor and ipm motor |
| CN101917076A (en) * | 2010-08-26 | 2010-12-15 | 苏州工业园区和鑫电器有限公司 | Permanent magnet drive motor for solar tracking system |
| CN103004056A (en) * | 2010-06-14 | 2013-03-27 | 丰田自动车株式会社 | Rotor core for dynamo-electric machine and method for manufacturing same |
| US20130334910A1 (en) * | 2012-06-13 | 2013-12-19 | Denso Corporation | Rotor for electric rotating machine and method of manufacturing the same |
| CN103490539A (en) * | 2012-06-13 | 2014-01-01 | 株式会社电装 | Rotor for electric rotating machine |
| JP2015035888A (en) * | 2013-08-08 | 2015-02-19 | 日産自動車株式会社 | Rotor for rotary electric machine and manufacturing method therefor |
| CN104682593A (en) * | 2013-11-27 | 2015-06-03 | 三菱电机株式会社 | Magnet-buried rotor |
| JP2015136245A (en) * | 2014-01-17 | 2015-07-27 | トヨタ自動車株式会社 | Rotor of motor |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
| JP2016067140A (en) * | 2014-09-25 | 2016-04-28 | トヨタ自動車株式会社 | Rotor and method of manufacturing rotor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5609330B2 (en) * | 2010-07-05 | 2014-10-22 | 日産自動車株式会社 | Rotating electric machine and method of manufacturing rotating electric machine |
-
2016
- 2016-05-24 JP JP2016102942A patent/JP6685175B2/en active Active
-
2017
- 2017-04-20 WO PCT/JP2017/015840 patent/WO2017203907A1/en active Application Filing
- 2017-04-20 CN CN201780026233.0A patent/CN109155552B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267943A (en) * | 1997-07-22 | 2000-09-27 | 松下电器产业株式会社 | Motor with rotor containing inner permanent magnet |
| JP2004343842A (en) * | 2003-05-13 | 2004-12-02 | Denso Corp | Rotor for electric rotating machine |
| CN1825734A (en) * | 2005-02-24 | 2006-08-30 | 丰田自动车株式会社 | Rotor and method of manufacturing the same |
| JP2009232525A (en) * | 2008-03-21 | 2009-10-08 | Toyota Motor Corp | Rotor for ipm motor and ipm motor |
| CN103004056A (en) * | 2010-06-14 | 2013-03-27 | 丰田自动车株式会社 | Rotor core for dynamo-electric machine and method for manufacturing same |
| CN101917076A (en) * | 2010-08-26 | 2010-12-15 | 苏州工业园区和鑫电器有限公司 | Permanent magnet drive motor for solar tracking system |
| US20130334910A1 (en) * | 2012-06-13 | 2013-12-19 | Denso Corporation | Rotor for electric rotating machine and method of manufacturing the same |
| CN103490539A (en) * | 2012-06-13 | 2014-01-01 | 株式会社电装 | Rotor for electric rotating machine |
| JP2015035888A (en) * | 2013-08-08 | 2015-02-19 | 日産自動車株式会社 | Rotor for rotary electric machine and manufacturing method therefor |
| CN104682593A (en) * | 2013-11-27 | 2015-06-03 | 三菱电机株式会社 | Magnet-buried rotor |
| JP2015136245A (en) * | 2014-01-17 | 2015-07-27 | トヨタ自動車株式会社 | Rotor of motor |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
| JP2016067140A (en) * | 2014-09-25 | 2016-04-28 | トヨタ自動車株式会社 | Rotor and method of manufacturing rotor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365144A (en) * | 2019-07-18 | 2019-10-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor and compressor |
| CN110380543A (en) * | 2019-08-07 | 2019-10-25 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor assembly, motor, compressor |
| CN111509886A (en) * | 2020-04-15 | 2020-08-07 | 重庆三峡学院 | Multifunctional temperature control heating system |
| CN111509886B (en) * | 2020-04-15 | 2021-09-14 | 重庆三峡学院 | Multifunctional temperature control heating system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017212780A (en) | 2017-11-30 |
| WO2017203907A1 (en) | 2017-11-30 |
| JP6685175B2 (en) | 2020-04-22 |
| CN109155552B (en) | 2020-07-21 |
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Address after: Ibaraki Patentee after: Hitachi astemo Co.,Ltd. Address before: Ibaraki Patentee before: HITACHI AUTOMOTIVE SYSTEMS, Ltd. |