CN116742852A - Generator rotor for weakening air gap flux density distortion and voltage-stabilizing power generation system - Google Patents
Generator rotor for weakening air gap flux density distortion and voltage-stabilizing power generation system Download PDFInfo
- Publication number
- CN116742852A CN116742852A CN202310804131.4A CN202310804131A CN116742852A CN 116742852 A CN116742852 A CN 116742852A CN 202310804131 A CN202310804131 A CN 202310804131A CN 116742852 A CN116742852 A CN 116742852A
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- groove
- air gap
- circular arc
- shaped
- magnetic steel
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- 230000004907 flux Effects 0.000 title claims abstract description 12
- 238000010248 power generation Methods 0.000 title claims abstract description 11
- 230000003313 weakening effect Effects 0.000 title abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims abstract description 5
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- 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
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention provides a production method of a generator rotor for weakening air gap flux density distortion and a voltage stabilizing power generation system, and belongs to the technical field of automobile motor electric appliances. Even number group V-shaped grooves are uniformly distributed on the rotor iron core, the left length of each V-shaped groove is smaller than the right length of each V-shaped groove, the outer end of each V-shaped groove is provided with an inverted splayed groove formed by two rectangular grooves with different lengths, a first arc air gap groove and a second arc air gap groove are formed in the inverted splayed groove, the first arc air gap groove and the second arc air gap groove are parallel to the excircle of the rotor punching sheet, and a first arc magnetic steel groove and a second arc magnetic steel groove are arranged between the first arc air gap groove and the second arc air gap groove. The motor rotor is arranged into a double-V arc-shaped magnetic steel structure with different lengths, the armature reaction caused by impact current is weakened by utilizing the arc magnetic isolation grooves, the anti-demagnetizing capability of the permanent magnet motor is enhanced, the air gap flux density is increased, and the magnetic field harmonic wave of the motor is reduced.
Description
The invention provides a production method of a generator rotor for weakening air gap flux density distortion and a voltage stabilizing power generation system, and belongs to the technical field of automobile motor electric appliances.
Background
For weakening the harmonic wave of the generator, stator inclined slots or rotor inclined poles are mostly adopted, and the rotor inclined poles are more segmented inclined poles, such as the prior art, the Chinese patent announced: magnetic pole punching sheet and permanent magnet generator rotor core adopting same, and application number is that: 201310467230.4A rotor structure with staggered and offset magnetic pole symmetry axes of adjacent iron core sections is disclosed, wherein the rotor iron core of a permanent magnet generator is segmented in the axial direction, and the tooth harmonic magnetic field of the permanent magnet motor is improved. The issued chinese patent: a design method of a magnetic steel sectional oblique polar angle of a permanent magnet synchronous motor is disclosed, and the application number is as follows: CN2015153527. X discloses a design method of magnetic steel sectional oblique polar angle, which calculates the torque fluctuation times through the cogging torque times and the slot number of each pole per phase, and determines the oblique polar angle of each section according to the magnetic steel sectional number. In actual work, the stator chute and the rotor chute can both cause the increase of the processing technology difficulty, the operation is inconvenient, and the motor production period is not reduced.
Disclosure of Invention
The invention discloses a generator rotor for weakening air gap flux density distortion and a voltage stabilizing power generation system, which are characterized in that the motor rotor is arranged into a double-V arc magnetic steel structure with different lengths on the premise of ensuring that the processing procedure, the process difficulty and the motor cost are not increased, and an armature reaction caused by impact current is weakened by utilizing an arc magnetic isolation groove, so that the anti-demagnetizing capability of a permanent magnet motor is enhanced, the air gap flux density is increased, and the motor magnetic field harmonic wave is reduced, and the adopted technical scheme is as follows:
the utility model provides a weaken generator rotor of air gap density distortion, its characterized in that, the rotor includes pivot, rotor core, V-arrangement groove, the splayed groove of falling, first circular arc air gap groove, second circular arc air gap groove, first circular arc magnet steel groove, second circular arc magnet steel groove, neodymium iron boron permanent magnet steel and ferrite permanent magnet steel, its characterized in that:
even groups of V-shaped grooves are uniformly distributed on the rotor iron core, both sides of each V-shaped groove are arc-shaped, the length of the left side of each V-shaped groove is smaller than that of the right side of each V-shaped groove, and the proximal ends of the V-shaped grooves are not communicated;
the outer end of the V-shaped groove is provided with an inverted splayed groove formed by two rectangular grooves with different lengths, the inner end of the longer side of the inverted splayed groove is communicated with the outer end of the shorter side of the V-shaped groove, the inner end of the shorter side of the inverted splayed groove is communicated with the outer end of the longer side of the V-shaped groove, and the outer ends of the two rectangular grooves extend towards the outer circle of the rotor core;
the length of the longer side of the V-shaped groove is equal to that of the longer side of the inverted splayed groove;
a first circular arc air gap groove and a second circular arc air gap groove are arranged between the two rectangular grooves which are inverted splayed grooves, the first circular arc air gap groove and the second circular arc air gap groove are parallel to the excircle of the rotor punching sheet, the widths of the first circular arc air gap groove and the second circular arc air gap groove are equal, the length of the first circular arc air gap groove is larger than that of the second circular arc air gap groove, the first circular arc air gap groove is communicated with the shorter side close to the inverted splayed groove, the second circular arc air gap groove is communicated with the longer side close to the inverted splayed groove, and the radius of the circumference where the first circular arc air gap groove and the second circular arc air gap groove are located is equal to half of the sum of the distance from the inner end of the shorter side of the inverted splayed groove to the center of the rotor core and the radius of the rotor core;
a first circular arc magnetic steel groove and a second circular arc magnetic steel groove are arranged between the first circular arc air gap groove and the second circular arc air gap groove, the first circular arc magnetic steel groove is parallel to the longer side of the V-shaped groove, the second circular arc magnetic steel groove is parallel to the shorter side of the V-shaped groove, the first circular arc magnetic steel groove is communicated with the first circular arc air gap groove, and the second circular arc magnetic steel groove is communicated with the second circular arc air gap groove;
the central line of the magnetic pole where the V-shaped groove is positioned passes through the longer side of the V-shaped groove and the first circular arc magnetic steel groove;
neodymium iron boron permanent magnet steel is placed in the longer side of the V-shaped groove and the first circular arc magnetic steel groove, and ferrite permanent magnet steel is placed in the shorter side of the V-shaped groove and the second circular arc magnetic steel groove.
The polarities of the outer side surfaces of the magnetic steels in the V-shaped grooves are the same as the polarities of the outer side surfaces of the magnetic steels in the first arc-shaped magnetic steel groove and the second arc-shaped magnetic steel groove outside the V-shaped grooves, and the polarities of the outer side surfaces of the magnetic steels in the adjacent two V-shaped grooves are opposite
A non-communication part with the thickness of 1.5mm is arranged between the first circular arc magnetic steel groove and the second circular arc magnetic steel groove.
The utility model provides a steady voltage power generation system, includes generator rotor and steady voltage power generation system, its characterized in that: the generator rotor is the generator rotor for weakening the air gap magnetic density distortion.
Compared with the prior art, the invention has the following technical effects:
(1) The arc air gap groove can weaken armature reaction caused by impact current, and enhance the anti-demagnetizing capability of the permanent magnet motor;
(2) The magnetic poles adopt asymmetric structures and are combined by different magnetic steels, so that the motor efficiency can be improved;
(3) The rare earth materials are used, the permanent magnet utilization rate is high, and the cost is low;
(4) The double-V arc-shaped magnetic steel structure with different lengths is adopted, so that the air gap flux density can be increased, and the magnetic field harmonic wave of the motor can be reduced.
Drawings
FIG. 1 is a schematic diagram of a generator rotor structure for attenuating air gap flux density distortion in accordance with the present invention.
In the figure: 1. a rotating shaft; 2. a rotor core; 3. inverted splayed grooves; 4. a second circular arc magnetic steel groove; 5. a first circular arc magnetic steel groove; 6. a first circular arc air gap groove; 7. a second circular arc air gap groove; 8. v-shaped grooves.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
The utility model provides a weaken generator rotor of air gap density distortion, its characterized in that, the rotor includes pivot 1, rotor core 2, V-arrangement groove 8, the eight character shape groove 3 of falling, first circular arc air gap groove 6, second circular arc air gap groove 7, first circular arc magnet steel groove 5, second circular arc magnet steel groove 4, neodymium iron boron permanent magnet steel and ferrite permanent magnet steel, its characterized in that:
the rotor core 2 is uniformly distributed with an even number of groups of V-shaped grooves 8,V, two sides of each V-shaped groove 8 are arc-shaped, the length of the left side of each V-shaped groove 8 is smaller than that of the right side of each V-shaped groove 8, and the near ends of the V-shaped grooves 8 are not communicated;
the outer end of the V-shaped groove 8 is provided with an inverted splayed groove 3 formed by two rectangular grooves with different lengths, the inner end of the longer side of the inverted splayed groove 3 is communicated with the outer end of the shorter side of the V-shaped groove 8, the inner end of the shorter side of the inverted splayed groove 3 is communicated with the outer end of the longer side of the V-shaped groove 8, and the outer ends of the two rectangular grooves extend to the outer circle of the rotor core 2;
the length of the longer side of the V-shaped groove 8 is equal to the length of the longer side of the inverted splayed groove 3;
a first circular arc air gap groove 6 and a second circular arc air gap groove 7 are arranged between two rectangular grooves forming the inverted splayed groove 3, the first circular arc air gap groove 6 and the second circular arc air gap groove 7 are parallel to the excircle of the rotor punching sheet, the widths of the first circular arc air gap groove 6 and the second circular arc air gap groove 7 are equal, the length of the first circular arc air gap groove 6 is larger than that of the second circular arc air gap groove 7, the first circular arc air gap groove 6 is communicated with the shorter side close to the inverted splayed groove 3, the second circular arc air gap groove 7 is communicated with the longer side close to the inverted splayed groove 3, and the radius of the circumference where the first circular arc air gap groove 6 and the second circular arc air gap groove 7 are located is equal to half of the sum of the distance from the inner end of the shorter side of the inverted splayed groove 3 to the center of the rotor core and the radius of the rotor core;
a first circular arc magnetic steel groove 5 and a second circular arc magnetic steel groove 4 are arranged between the first circular arc air gap groove 6 and the second circular arc air gap groove 7, the first circular arc magnetic steel groove 5 is parallel to the longer side of the V-shaped groove 8, the second circular arc magnetic steel groove 4 is parallel to the shorter side of the V-shaped groove, the first circular arc magnetic steel groove 5 is communicated with the first circular arc air gap groove 6, and the second circular arc magnetic steel groove 4 is communicated with the second circular arc air gap groove 7;
the central line of the magnetic pole where the V-shaped groove 8 is positioned passes through the longer side of the V-shaped groove 8 and the first arc magnetic steel groove 5;
neodymium iron boron permanent magnet steel is placed in the longer side of the V-shaped groove 8 and the first circular arc magnetic steel groove 5, and ferrite permanent magnet steel is placed in the shorter side of the V-shaped groove 8 and the second circular arc magnetic steel groove 4.
The polarities of the outer sides of the NdFeB permanent magnet steel and the ferrite permanent magnet steel in the V-shaped groove 8 are the same as the polarities of the outer sides of the NdFeB permanent magnet steel and the ferrite permanent magnet steel in the first arc-shaped magnetic steel groove 5 and the second arc-shaped magnetic steel groove 4 outside the V-shaped groove 8, and the polarities of the outer sides of the NdFeB permanent magnet steel and the ferrite permanent magnet steel in the adjacent two V-shaped grooves 8 are opposite
A non-communication part with the length of 1.5mm is arranged between the first arc magnetic steel groove 5 and the second arc magnetic steel groove 4.
The utility model provides a steady voltage power generation system, includes generator rotor and steady voltage power generation system, its characterized in that: the generator rotor is the generator rotor for weakening the air gap magnetic density distortion.
Claims (4)
1. The utility model provides a weaken generator rotor of air gap density distortion, its characterized in that, the rotor includes pivot (1), rotor core (2), V-arrangement groove (8), the eight character shape groove (3), first circular arc air gap groove (6), second circular arc air gap groove (7), first circular arc magnet steel groove (5), second circular arc magnet steel groove (4), neodymium iron boron permanent magnet steel and ferrite permanent magnet steel, its characterized in that:
even number groups of V-shaped grooves (8) are uniformly distributed on the rotor iron core (2), two sides of each V-shaped groove (8) are arc-shaped, the length of the left side of each V-shaped groove (8) is smaller than that of the right side of each V-shaped groove (8), and the near ends of the V-shaped grooves (8) are not communicated;
the outer end of the V-shaped groove (8) is provided with an inverted splayed groove (3) formed by two rectangular grooves with different lengths, the inner end of the longer side of the inverted splayed groove (3) is communicated with the outer end of the shorter side of the V-shaped groove (8), the inner end of the shorter side of the inverted splayed groove (3) is communicated with the outer end of the longer side of the V-shaped groove (8), and the outer ends of the two rectangular grooves extend towards the outer circle of the rotor core (2);
the length of the longer side of the V-shaped groove (8) is equal to the length of the longer side of the inverted splayed groove (3);
a first circular arc air gap groove (6) and a second circular arc air gap groove (7) are arranged between two rectangular grooves forming the inverted splayed groove (3), the first circular arc air gap groove (6) and the second circular arc air gap groove (7) are parallel to the excircle of the rotor punching sheet, the widths of the first circular arc air gap groove (6) and the second circular arc air gap groove (7) are equal, the length of the first circular arc air gap groove (6) is greater than that of the second circular arc air gap groove (7), the first circular arc air gap groove (6) is communicated with the shorter side close to the inverted splayed groove (3), the second circular arc air gap groove (7) is communicated with the longer side close to the inverted splayed groove (3), and the radius of the circumference where the first circular arc air gap groove (6) and the second circular arc air gap groove (7) are located is equal to half of the sum of the distance from the shorter side of the inverted splayed groove (3) to the center of the rotor core and the radius of the rotor core;
a first circular arc magnetic steel groove (5) and a second circular arc magnetic steel groove (4) are arranged between the first circular arc air gap groove (6) and the second circular arc air gap groove (7), the first circular arc magnetic steel groove (5) is parallel to the longer side of the V-shaped groove (8), the second circular arc magnetic steel groove (4) is parallel to the shorter side of the V-shaped groove, the first circular arc magnetic steel groove (5) is communicated with the first circular arc air gap groove (6), and the second circular arc magnetic steel groove (4) is communicated with the second circular arc air gap groove (7);
the central line of the magnetic pole where the V-shaped groove (8) is positioned passes through the longer side of the V-shaped groove (8) and the first arc magnetic steel groove (5);
neodymium iron boron permanent magnet steel is placed in the longer side of the V-shaped groove (8) and the first circular arc magnetic steel groove (5), and ferrite permanent magnet steel is placed in the shorter side of the V-shaped groove (8) and the second circular arc magnetic steel groove (4).
2. A generator rotor for attenuating air gap flux density distortion as defined in claim 1, wherein: the polarities of the outer side surfaces of the magnetic steels in the V-shaped grooves (8) are the same as the polarities of the outer side surfaces of the magnetic steels in the first arc-shaped magnetic steel groove (5) and the second arc-shaped magnetic steel groove (4) outside the V-shaped grooves (8), and the polarities of the outer side surfaces of the magnetic steels in the two adjacent V-shaped grooves (8) are opposite.
3. A generator rotor for attenuating air gap flux density distortion as defined in claim 1, wherein: a non-communication part with the diameter of 1.5mm is arranged between the first arc magnetic steel groove (5) and the second arc magnetic steel groove (4).
4. The utility model provides a steady voltage power generation system, includes generator rotor and steady voltage power generation system, its characterized in that: the generator rotor is a generator rotor of any one of claims 1-3 that attenuates air gap flux density distortion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310804131.4A CN116742852B (en) | 2023-07-03 | 2023-07-03 | Generator rotor for weakening air gap flux density distortion and voltage-stabilizing power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310804131.4A CN116742852B (en) | 2023-07-03 | 2023-07-03 | Generator rotor for weakening air gap flux density distortion and voltage-stabilizing power generation system |
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| Publication Number | Publication Date |
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| CN116742852A true CN116742852A (en) | 2023-09-12 |
| CN116742852B CN116742852B (en) | 2024-04-16 |
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| CN202310804131.4A Active CN116742852B (en) | 2023-07-03 | 2023-07-03 | Generator rotor for weakening air gap flux density distortion and voltage-stabilizing power generation system |
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| CN116742852B (en) | 2024-04-16 |
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