CN116742854B - Asymmetric permanent magnet motor with reverse double-arc type magnetism isolating grooves - Google Patents
Asymmetric permanent magnet motor with reverse double-arc type magnetism isolating grooves Download PDFInfo
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- CN116742854B CN116742854B CN202310740045.1A CN202310740045A CN116742854B CN 116742854 B CN116742854 B CN 116742854B CN 202310740045 A CN202310740045 A CN 202310740045A CN 116742854 B CN116742854 B CN 116742854B
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 18
- 230000005389 magnetism Effects 0.000 title abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 241000242541 Trematoda Species 0.000 claims abstract description 26
- 241000935974 Paralichthys dentatus Species 0.000 claims abstract description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 7
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 238000002955 isolation Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides an asymmetric permanent magnet motor with reverse double-arc-shaped magnetism isolating grooves, and belongs to the technical field of automobile motor electric appliances. The combined magnetic poles are uniformly distributed on the rotor core, each group of combined magnetic poles is in a ship anchor shape, anchor arms and flukes are arranged on the left side and the right side of each group of combined magnetic poles in the radial direction of the rotor core, first permanent magnet steel is placed in each anchor arm, no permanent magnet steel is placed in each fluke between two first permanent magnet steels with the polarity of N poles on the outer side, two flukes without permanent magnet steel in the motor structure form a reverse double-arc type magnetic isolation groove, the trend of a magnetic circuit is restrained by the reverse double-arc type magnetic isolation groove, so that the magnetic field distribution is more uniform, the magnetic field harmonic wave is reduced, the output voltage quality is high, the motor is stable in operation, ferrite permanent magnet steel is placed in each fluke of the isolated poles, and the production cost of the motor can be reduced while the magnetic field is enhanced.
Description
Technical Field
The invention provides an asymmetric permanent magnet motor with reverse double-arc-shaped magnetism isolating grooves, and belongs to the technical field of automobile motor electric appliances.
Background
At present, a method for reducing magnetic field harmonic wave between stator and rotor air gaps of a motor has been proposed, for example, in the prior art, the published Chinese patent: motor rotor punching sheet, motor rotor and motor, application number: 202010649392.X discloses a rotor structure of rotor punching excircle edge arrangement magnetism isolation breach, and every magnetic pole has two magnet steel grooves, and the magnet steel groove outside is pressed close to rotor punching excircle department and is opened circular arc or triangle magnetism isolation breach for the distortion rate of no-load air gap field of motor is showing and is reducing, combines rotor segmentation oblique pole simultaneously, reduces motor back electromotive force harmonic. The issued chinese patent: a rotor torsion tilting method suitable for a permanent magnet synchronous motor has the application number: CN201911326454.7 discloses a method for axially distributing five-section rotors by free combination, which weakens magnetic field harmonic wave of specific order, and when the multi-section rotors are axially symmetrically distributed in a staggered way, vibration noise is optimized. The outer circle edge of the rotor punching sheet is provided with a magnetism isolating gap, so that the equivalent air gap length at the magnetism isolating gap is increased, the magnetic resistance is increased, and the motor efficiency is reduced. The motor production period can be increased by sectioning the oblique pole, and the motor cost is improved.
Disclosure of Invention
The invention aims to solve the technical problems that: the production method of the asymmetric permanent magnet motor rotor with the reverse double-arc type magnetism isolating grooves is provided, two adjacent flukes without permanent magnet steel in the motor structure form the reverse double-arc type magnetism isolating grooves, the trend of a magnetic circuit is restrained by the reverse double-arc type magnetism isolating grooves, so that the magnetic field distribution is more uniform, the magnetic field harmonic wave is reduced, the output voltage quality is high, the motor operates stably, the reverse double-arc type magnetism isolating grooves divide magnetic poles into three sections, neodymium-iron-boron permanent magnet steel with smaller volume is placed in the middle of the magnetic poles, and ferrite permanent magnet steel is placed in the flukes of the poles, so that the production cost of the motor can be reduced while the magnetic field is enhanced.
The invention adopts the technical proposal for solving the technical problems that: an asymmetric permanent magnet motor with reverse double-arc magnetic isolation grooves comprises a casing, a stator, a rotating shaft, a rotor core, a front end cover, a rear end cover, a combined magnetic pole, an asymmetric V-shaped magnetic pole and a combined rectangular magnetic pole, and is characterized in that:
The rotor core is uniformly distributed with 8 groups of combined magnetic poles, each group of combined magnetic poles is in a ship anchor shape, anchor arms and flukes with the same length as the anchor rods are arranged on the left side and the right side of each anchor stem along the diameter direction of the rotor core, and the flukes and the anchor arms on the right side of each anchor stem are symmetrical with the flukes and the anchor arms on the left side of each anchor stem;
The outer ends of the flukes extend to the outer circle of the rotor core, the inner ends of the flukes are communicated with the outer ends of the anchor arms, and the inner ends of the anchor arms are communicated with the inner ends of the anchor stems;
The first permanent magnet steel is arranged in each anchor stem, and the polarities of the opposite faces of the first permanent magnet steel in each two adjacent anchor stems are the same;
Second permanent magnet steel is placed in two flukes between two adjacent first permanent magnet steel with the polarity of the outer side being the S pole, and one side of the second permanent magnet steel, facing the excircle of the rotor core, is the S pole;
an asymmetric V-shaped magnetic pole is arranged between two anchor arms between two adjacent first permanent magnet steels with the outer side surface polarity of S pole;
The asymmetric V-shaped magnetic pole consists of two third permanent magnet steels with different lengths, one side of the third permanent magnet steel facing the excircle of the rotor core is an S pole, the proximal end of the asymmetric V-shaped magnetic pole has an unconnected distance of 1.5mm, and the asymmetric V-shaped magnetic pole is not communicated with the outer end of the anchor arm;
no permanent magnet steel exists in the fluke between the two first permanent magnet steels with the outer side surface polarity of N pole;
A combined rectangular magnetic pole is arranged between the outer ends of two anchor arms between adjacent first permanent magnet steels with the polarity of N poles on the outer side, the combined rectangular magnetic pole is composed of two fourth permanent magnet steels with the same shape, a non-communication distance of 1.5mm is arranged between the two fourth permanent magnet steels, and the N pole is arranged on one side of the fourth permanent magnet steel, which faces the excircle of the rotor core.
The outer end of the anchor stem and the outer end of the anchor claw are on the same circumference and are provided with a non-communication part of 1.5mm with the outer circle of the rotor core.
The arc length between the outer ends of the anchor stems and the outer ends of the flukes of each group of combined magnetic poles is 1/3 of the arc length between the outer ends of the adjacent anchor stems.
The included angle between the anchor stem and the adjacent fluke and the included angle between the anchor stem and the adjacent anchor arm are all larger than 0 and smaller than 22.5 degrees.
The first permanent magnet steel, the third permanent magnet steel and the fourth permanent magnet steel are made of neodymium iron boron, and the second permanent magnet steel is made of ferrite.
Compared with the prior art, the invention has the following technical effects:
(1) Adjacent flukes without permanent magnet steel form a reverse double-arc type magnetism isolating groove, the reverse double-arc type magnetism isolating groove and ferrite permanent magnet steel alternate structure, the action of armature reaction is weakened, and the irreversible demagnetization of the motor is enhanced;
(2) The magnetic isolation groove divides the magnetic pole into three sections, permanent magnet steel with smaller volume is placed in the middle of the magnetic isolation groove, and ferrite permanent magnet steel is placed in the magnetic isolation groove, so that the production cost of the motor can be reduced while the magnetic field is enhanced;
(3) The trend of the magnetic circuit is restrained by the magnetism isolating groove, so that the magnetic field distribution is more uniform, the output voltage quality of the generator is high, or the motor operates stably.
Drawings
Fig. 1 is a schematic diagram of the motor structure of the present invention.
Fig. 2 is a schematic view of the rotor structure of the present invention.
In the figure: 1. the magnetic pole assembly comprises a rotating shaft, 2, a front end cover, 3, a machine shell, 4, a stator, 5, a rear end cover, 6, a rotor core, 7, combined magnetic poles, 8, combined rectangular magnetic poles and 9, and asymmetric V-shaped magnetic poles.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
The utility model provides an asymmetric permanent magnet machine with two opposite pitch arc formula magnetism isolation groove, includes casing 3, stator 4, pivot 1, rotor core 6, front end housing 2, rear end housing 5, combination formula magnetic pole 7, asymmetric V-arrangement magnetic pole 9, combination rectangle magnetic pole 8, its characterized in that:
the rotor core 6 is uniformly provided with 8 groups of combined magnetic poles 7, each group of combined magnetic poles 7 is in a ship anchor shape, anchor stems in the middle of each group of combined magnetic poles 7 are respectively provided with anchor arms and flukes with the same length as the anchor rods along the diameter direction of the rotor core 6, and the flukes, the anchor arms and the flukes on the left side of the anchor stems are symmetrical with respect to the anchor stems;
The outer ends of the flukes extend to the outer circle of the rotor core 6, the inner ends of the flukes are communicated with the outer ends of the anchor arms, and the inner ends of the anchor arms are communicated with the inner ends of the anchor stems;
The first permanent magnet steel is arranged in each anchor stem, and the polarities of the opposite faces of the first permanent magnet steel in each two adjacent anchor stems are the same;
Second permanent magnet steel is placed in two flukes between two adjacent first permanent magnet steel with the polarity of the outer side being the S pole, and one side of the second permanent magnet steel, facing the outer circle of the rotor core 6, is the S pole;
An asymmetric V-shaped magnetic pole 9 is arranged between two anchor arms between two adjacent first permanent magnet steels with the polarity of the outer side being the S pole;
The asymmetric V-shaped magnetic pole 9 consists of two third permanent magnet steels with different lengths, one side of the third permanent magnet steel facing the outer circle of the rotor core 6 is an S pole, the proximal end of the asymmetric V-shaped magnetic pole 9 has an unconnected distance of 1.5mm, and the asymmetric V-shaped magnetic pole 9 is not communicated with the outer end of the anchor arm;
no permanent magnet steel exists in the fluke between the two first permanent magnet steels with the outer side surface polarity of N pole;
a combined rectangular magnetic pole 8 is arranged between the outer ends of two anchor arms between two adjacent first permanent magnet steels with the polarity of the outer side being N, the combined rectangular magnetic pole 8 is composed of two fourth permanent magnet steels with the same shape, a non-communication distance of 1.5mm is arranged between the two fourth permanent magnet steels, and the side of the fourth permanent magnet steel facing the excircle of the rotor core 6 is N.
The outer end of the anchor shaft and the outer end of the anchor claw are on the same circumference and have a non-communication part of 1.5mm with the outer circle of the rotor core 6.
The arc length between the outer ends of the anchor stems and the outer ends of the flukes of each group of combined magnetic poles 7 is 1/3 of the arc length between the outer ends of the adjacent anchor stems.
The included angle between the anchor stem and the adjacent fluke and the included angle between the anchor stem and the adjacent anchor arm are all larger than 0 and smaller than 22.5 degrees.
The first permanent magnet steel, the third permanent magnet steel and the fourth permanent magnet steel are made of neodymium iron boron, and the second permanent magnet steel is made of ferrite.
The asymmetric permanent magnet motor with the reverse double-arc-shaped magnetism isolating grooves can be applied to an automobile power generation system, can be used as a generator to provide power for automobile electric equipment, can also be used for a new energy automobile driving system, and can be used as a motor to drive new energy to operate.
Claims (4)
1. The utility model provides an asymmetric permanent magnet machine with reverse double arc formula separates magnetic groove, includes casing (3), stator (4), pivot (1), rotor core (6), front end housing (2), rear end housing (5), combination magnetic pole (7), asymmetric V-arrangement magnetic pole (9), combination rectangle magnetic pole (8), its characterized in that:
The rotor iron core (6) is uniformly provided with 8 groups of combined magnetic poles (7), each group of combined magnetic poles (7) is in a ship anchor shape, an anchor shank in the middle of each group of combined magnetic poles (7) is along the diameter direction of the rotor iron core (6), anchor arms and anchor flukes with the same length as the anchor rods are arranged on the left side and the right side of each anchor shank, and the anchor flukes and the anchor arms on the right side of each anchor shank are symmetrical with the anchor flukes and the anchor arms on the left side of each anchor shank;
The outer ends of the flukes extend to the outer circle of the rotor core (6), the inner ends of the flukes are communicated with the outer ends of the anchor arms, and the inner ends of the anchor arms are communicated with the inner ends of the anchor stems;
The first permanent magnet steel is arranged in each anchor stem, and the polarities of the opposite faces of the first permanent magnet steel in each two adjacent anchor stems are the same;
second permanent magnet steel is placed in two flukes between two adjacent first permanent magnet steel with the polarity of the outer side being the S pole, and one side of the second permanent magnet steel, facing the excircle of the rotor core (6), is the S pole;
An asymmetric V-shaped magnetic pole (9) is arranged between two anchor arms between two adjacent first permanent magnet steels with the polarity of the outer side being the S pole;
the asymmetric V-shaped magnetic pole (9) consists of two third permanent magnet steels with different lengths, one side of the third permanent magnet steel facing the excircle of the rotor core (6) is an S pole, the proximal end of the asymmetric V-shaped magnetic pole (9) has an unconnected distance of 1.5mm, and the asymmetric V-shaped magnetic pole (9) is not communicated with the outer end of the anchor arm;
no permanent magnet steel exists in the fluke between the two first permanent magnet steels with the outer side surface polarity of N pole;
A combined rectangular magnetic pole (8) is arranged between the outer ends of two anchor arms between adjacent first permanent magnet steels with the polarity of N poles on the outer side, the combined rectangular magnetic pole (8) is composed of two fourth permanent magnet steels with the same shape, a non-communication distance of 1.5mm is arranged between the two fourth permanent magnet steels, and the N pole is arranged on one side of the fourth permanent magnet steel, which faces the excircle of the rotor core (6).
2. The asymmetric permanent magnet motor with reverse double arc type magnetic shield slots of claim 1, wherein: the outer end of the anchor stem and the outer end of the anchor claw are on the same circumference and are provided with a non-communication part of 1.5mm with the outer circle of the rotor core (6);
the arc length between the outer ends of the anchor stems and the outer ends of the flukes of each group of combined magnetic poles (7) is 1/3 of the arc length between the outer ends of the adjacent anchor stems.
3. The asymmetric permanent magnet motor with reverse double arc type magnetic shield slots of claim 1, wherein: the included angle between the anchor stem and the adjacent fluke and the included angle between the anchor stem and the adjacent anchor arm are all larger than 0 and smaller than 22.5 degrees.
4. The asymmetric permanent magnet motor with reverse double arc type magnetic shield slots of claim 1, wherein: the first permanent magnet steel, the third permanent magnet steel and the fourth permanent magnet steel are made of neodymium iron boron, and the second permanent magnet steel is made of ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310740045.1A CN116742854B (en) | 2023-06-21 | 2023-06-21 | Asymmetric permanent magnet motor with reverse double-arc type magnetism isolating grooves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310740045.1A CN116742854B (en) | 2023-06-21 | 2023-06-21 | Asymmetric permanent magnet motor with reverse double-arc type magnetism isolating grooves |
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| Publication Number | Publication Date |
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| CN116742854A CN116742854A (en) | 2023-09-12 |
| CN116742854B true CN116742854B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310740045.1A Active CN116742854B (en) | 2023-06-21 | 2023-06-21 | Asymmetric permanent magnet motor with reverse double-arc type magnetism isolating grooves |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023421A (en) * | 2017-12-21 | 2018-05-11 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
| CN109951037A (en) * | 2019-04-23 | 2019-06-28 | 山东理工大学 | Electromagnetism and hidden magnetic pole composite excitation driving motor |
| CN109995164A (en) * | 2019-04-23 | 2019-07-09 | 山东理工大学 | Asymmetric magnetic pole type permanent magnetism for electric vehicle and pawl pole electrical excitation driving motor |
| CN114567100A (en) * | 2022-04-02 | 2022-05-31 | 山东理工大学 | Asymmetric magnetic pole permanent magnet and salient pole series-parallel magnetic circuit hybrid excitation driving motor for electric automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10003227B2 (en) * | 2015-03-20 | 2018-06-19 | GM Global Technology Operations LLC | Axially asymmetric configuration for interior permanent magnet machine |
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- 2023-06-21 CN CN202310740045.1A patent/CN116742854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023421A (en) * | 2017-12-21 | 2018-05-11 | 珠海格力电器股份有限公司 | Motor rotor and permanent magnet motor |
| CN109951037A (en) * | 2019-04-23 | 2019-06-28 | 山东理工大学 | Electromagnetism and hidden magnetic pole composite excitation driving motor |
| CN109995164A (en) * | 2019-04-23 | 2019-07-09 | 山东理工大学 | Asymmetric magnetic pole type permanent magnetism for electric vehicle and pawl pole electrical excitation driving motor |
| CN114567100A (en) * | 2022-04-02 | 2022-05-31 | 山东理工大学 | Asymmetric magnetic pole permanent magnet and salient pole series-parallel magnetic circuit hybrid excitation driving motor for electric automobile |
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| CN116742854A (en) | 2023-09-12 |
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