CN116846106A - Permanent magnet generator with low magnetic density distortion rate and voltage-stabilizing power generation system - Google Patents
Permanent magnet generator with low magnetic density distortion rate and voltage-stabilizing power generation system Download PDFInfo
- Publication number
- CN116846106A CN116846106A CN202310828148.3A CN202310828148A CN116846106A CN 116846106 A CN116846106 A CN 116846106A CN 202310828148 A CN202310828148 A CN 202310828148A CN 116846106 A CN116846106 A CN 116846106A
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- magnetic steel
- groove
- steel groove
- magnetic
- permanent magnet
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- 238000010248 power generation Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 143
- 239000010959 steel Substances 0.000 claims abstract description 143
- 230000005389 magnetism Effects 0.000 claims abstract description 38
- 238000004891 communication Methods 0.000 claims description 9
- MKHLSGKJYGBQLI-UHFFFAOYSA-N ethoxy-(2-ethylsulfanylethylsulfanyl)-methoxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCOP(=S)(OC)SCCSCC MKHLSGKJYGBQLI-UHFFFAOYSA-N 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a permanent magnet generator with low magnetic density distortion rate and a voltage stabilizing power generation system, and belongs to the technical field of automobile motor electric appliances. The rotor core is uniformly distributed with an even number of first magnetic steel grooves, the right side of each first magnetic steel groove is provided with a magnetism isolating groove, the outer side of each first magnetic steel groove and the outer side of each magnetism isolating groove are jointly provided with V-shaped magnetic steel grooves, a second magnetic steel groove is arranged between the right side of each V-shaped magnetic steel groove and each magnetism isolating groove, permanent magnet steel is arranged in each first magnetic steel groove, each V-shaped magnetic steel groove and each second magnetic steel groove, the motor adopts an asymmetric inner magnetic pole group structure formed by combining the first magnetic steel grooves and the magnetism isolating grooves, the magnetic leakage rate of the magnetic steel can be reduced, the motor quality is reduced, the outer side of each asymmetric inner magnetic pole group structure is provided with the second magnetic steel grooves and the V-shaped magnetic steel grooves, the generator is divided into three-section pole arc lengths outside single magnetic poles, air gap magnetic densities tend to be sinusoidal, the magnetic density distortion rate is reduced, the problem that the motor loss is large due to air gap magnetic resistance change is solved, and the motor efficiency is improved.
Description
Technical Field
The invention provides a permanent magnet generator with low magnetic density distortion rate and a voltage stabilizing power generation system, and belongs to the technical field of automobile motor electric appliances.
Background
At present, most of rotors of permanent magnet motors for automobiles adopt a uniform magnetic pole structure, such as the prior art, patent names: hybrid permanent magnet and electromagnetic hybrid excitation generator, patent number: ZL201210119304.0 discloses following technical scheme, permanent magnet rotor includes first rectangle magnet steel, non-magnetic conduction slot wedge, second rectangle magnet steel, first rectangle magnet steel is placed in radial rectangular slot, the tangential rectangular inslot between two adjacent radial rectangular slot inner is placed to second rectangle magnet steel, the second magnet steel of this structural rotor is placed between two adjacent first magnet steel inner, in order to prevent magnet steel magnetic leakage, the length of second magnet steel in the direction of perpendicular to diameter is equal to the distance between two adjacent first magnet steel inner approximately, lead to the permanent magnet extravagant, material utilization rate is low, and the second magnet steel is placed in the inner, the ability of gathering magnetic field is weak, the dense harmonic of magnetism is big, the dense teratogenesis of magnetism is high, lead to the motor overall inefficiency, its performance needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problems that: on the premise of ensuring that the processing procedure, the process difficulty and the motor cost are not increased and are not greatly changed, the defects of the prior art are overcome, and the permanent magnet generator with low magnetic density distortion rate and the voltage stabilizing power generation system are provided.
The invention adopts the technical proposal for solving the technical problems that: the utility model provides a permanent magnet generator of low secret distortion rate of magnetism, includes steady voltage controller, pivot, front end housing, stator, rear end housing, rotor core, first magnet steel groove, separates magnetism groove, V-arrangement magnet steel groove, second magnet steel groove, permanent magnet steel, its characterized in that:
an even number of first magnetic steel grooves are uniformly distributed on the rotor core along the circumferential direction, and the first magnetic steel grooves are in a tangential structure;
the right side of the first magnetic steel groove is provided with a magnetism isolating groove which is in a tangential structure, and the left end of the magnetism isolating groove is communicated with the right end of the first magnetic steel groove;
the outer side of the first magnetic steel groove and the outer side of the magnetism isolating groove are jointly provided with V-shaped magnetic steel grooves, the symmetrical axis of the V-shaped magnetic steel grooves, the right end of the first magnetic steel groove and the left end of the magnetism isolating groove pass through the center line of the magnetic pole, and the outer end of the V-shaped magnetic steel grooves and the outer circle of the rotor core have a non-communication distance of 1.5 mm;
a second magnetic steel groove is arranged between the inner side of the right side of the V-shaped magnetic steel groove and the outer side of the magnetism isolating groove, the inner end of the second magnetic steel groove is close to the left end of the magnetism isolating groove and has a non-communication distance of 1.5mm, and the outer end of the second magnetic steel groove extends to the outer circle part of the rotor core on the right side of the V-shaped magnetic steel groove and has a non-communication distance of 1.5 mm;
the outer end of the second magnetic steel groove and the right end of the magnetism isolating groove are on the same straight line with the center of the rotor core.
The first magnetic steel groove, the V-shaped magnetic steel groove and the second magnetic steel groove are internally provided with permanent magnetic steel, the polarities of the outer side faces of the permanent magnetic steel in the adjacent V-shaped magnetic steel grooves are opposite, and the polarities of the outer side faces of the permanent magnetic steel in the V-shaped magnetic steel groove are the same as those of the outer side faces of the permanent magnetic steel in the first magnetic steel groove and the second magnetic steel groove in the inner side of the V-shaped magnetic steel groove.
The length of the polar arc between the right end of the V-shaped magnetic steel groove and the outer end of the second magnetic steel groove is equal to the polar arc of the V-shaped magnetic steel groove, and the length of the polar arc of the V-shaped magnetic steel groove is equal to 1/3 of the corresponding polar arc length between the left end of the first magnetic steel groove and the right end of the magnetism isolating groove
The utility model provides a steady voltage power generation system, includes generator and steady voltage controller, its characterized in that: the generator is the permanent magnet generator with low magnetic distortion rate.
Compared with the prior art, the invention has the following technical effects:
(1) The asymmetric inner magnetic pole group structure combining the magnetic steel groove and the magnetism isolating groove is adopted, so that the magnetic steel leakage rate can be reduced, and the motor quality is reduced;
(2) The outer side of the asymmetric inner magnetic pole group structure is provided with an oblique magnetic steel groove and a V-shaped magnetic steel groove, the outer side of a single magnetic pole of the generator is divided into three sections of pole arc lengths, so that the air gap flux density tends to be distributed in a sine way, and the flux density distortion rate is reduced;
(3) The rotor core punching sheet has simple processing technology, reduces the production cost of the motor rotor, solves the problem of high motor loss caused by the change of air gap magnetic resistance, and improves the motor efficiency;
(4) The inner layer of the magnetic pole is close to the permanent magnet steel, and a single magnetism isolating groove is arranged, so that the low magnetic leakage rate is ensured, the failure rate of the motor is reduced, and the service life of the motor is prolonged;
(5) By changing the arrangement mode of the magnetic poles, the quadrature magnetic resistance is increased, and the armature reaction is weakened.
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. a voltage stabilizing controller; 2. a rotating shaft; 3. a rear end cover; 4. a front end cover; 5. a stator; 6. A rotor core; 7. a first magnetic steel groove; 8. a magnetism isolating groove; 9. v-shaped magnetic steel groove; 10. and a second magnetic steel groove.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
The utility model provides a permanent magnet generator of low magnetic density teration rate, includes steady voltage controller 1, pivot 2, front end housing 4, stator 5, rear end housing 3, rotor core 6, first magnet steel groove 7, separates magnetic groove 8, V-arrangement magnet steel groove 9, second magnet steel groove 10, permanent magnet steel, its characterized in that:
an even number of first magnetic steel grooves 7 are uniformly distributed on the rotor core 6 along the circumferential direction, and the first magnetic steel grooves 7 are in a tangential structure;
the right side of the first magnetic steel groove 7 is provided with a magnetism isolating groove 8, the magnetism isolating groove 8 is in a tangential structure, and the left end of the magnetism isolating groove 8 is communicated with the right end of the first magnetic steel groove 7;
the outer side of the first magnetic steel groove 7 and the outer side of the magnetism isolating groove 8 are jointly provided with a symmetry axis of a V-shaped magnetic steel groove 9,V-shaped magnetic steel groove 9, the right end of the first magnetic steel groove 7 and the left end of the magnetism isolating groove 8 pass through the center line of the magnetic pole, and the outer end of the V-shaped magnetic steel groove 9 and the outer circle of the rotor core 6 have a non-communication distance of 1.5 mm;
a second magnetic steel groove 10 is arranged between the inner side of the right side of the V-shaped magnetic steel groove 9 and the outer side 8 of the magnetism isolating groove, the inner end of the second magnetic steel groove 10 is close to the left end of the magnetism isolating groove 8 and has a non-communication distance of 1.5mm, and the outer end of the second magnetic steel groove 10 extends to the outer circle part of the rotor core 6 on the right side of the V-shaped magnetic steel groove 9 and has a non-communication distance of 1.5 mm;
the outer end of the second magnetic steel groove 10 and the right end of the magnetism isolating groove 8 are on the same straight line with the center of the rotor core 6.
The first magnetic steel groove 7, the V-shaped magnetic steel groove 9 and the second magnetic steel groove 10 are internally provided with permanent magnetic steel, the polarities of the outer side faces of the permanent magnetic steel in the adjacent V-shaped magnetic steel grooves 9 are opposite, and the polarities of the outer side faces of the permanent magnetic steel in the V-shaped magnetic steel grooves 9 are the same as those of the outer side faces of the permanent magnetic steel in the first magnetic steel groove 7 and the second magnetic steel groove 10 in the inner side of the V-shaped magnetic steel groove 9.
The polar arc length between the right end of the V-shaped magnetic steel groove 9 and the outer end of the second magnetic steel groove 10 is equal to the polar arc length of the V-shaped magnetic steel groove 9, and the polar arc length of the V-shaped magnetic steel groove 9 is equal to 1/3 of the corresponding polar arc length between the left end of the first magnetic steel groove 7 and the right end of the magnetism isolating groove 8.
The utility model provides a steady voltage power generation system, includes generator and steady voltage controller, its characterized in that: the generator is the permanent magnet generator with low magnetic distortion rate.
Claims (5)
1. The utility model provides a permanent magnet generator of low magnetic density teration rate, includes steady voltage controller (1), pivot (2), front end housing (4), stator (5), rear end housing (3), rotor core (6), first magnet steel groove (7), separates magnetic groove (8), V-arrangement magnet steel groove (9), second magnet steel groove (10), permanent magnet steel, its characterized in that:
an even number of first magnetic steel grooves (7) are uniformly distributed on the rotor core (6) along the circumferential direction, and the first magnetic steel grooves (7) are in a tangential structure;
the right side of the first magnetic steel groove (7) is provided with a magnetism isolating groove (8), the magnetism isolating groove (8) is in a tangential structure, and the left end of the magnetism isolating groove (8) is communicated with the right end of the first magnetic steel groove (7);
the outer side of the first magnetic steel groove (7) and the outer side of the magnetism isolating groove (8) are jointly provided with a V-shaped magnetic steel groove (9), the symmetrical axis of the V-shaped magnetic steel groove (9), the right end of the first magnetic steel groove (7) and the left end of the magnetism isolating groove (8) pass through the center line of the magnetic pole, and the outer end of the V-shaped magnetic steel groove (9) and the outer circle of the rotor core (6) have a non-communication distance of 1.5 mm;
a second magnetic steel groove (10) is arranged between the inner side of the right side of the V-shaped magnetic steel groove (9) and the magnetism isolating groove (8), the inner end of the second magnetic steel groove (10) is close to the left end of the magnetism isolating groove (8), and the outer end of the second magnetic steel groove (10) extends to the outer circle part of the rotor core (6) on the right side of the V-shaped magnetic steel groove (9);
the outer end of the second magnetic steel groove (10), the right end of the magnetism isolating groove (8) and the center of the rotor core (6) are on the same straight line.
2. A low magnetic distortion permanent magnet generator according to claim 1, wherein: permanent magnet steel is arranged in each of the first magnet steel groove (7), the V-shaped magnet steel groove (9) and the second magnet steel groove (10);
the polarities of the outer side surfaces of the permanent magnet steels in the adjacent V-shaped magnetic steel grooves (9) are opposite;
the polarity of the outer side face of the permanent magnet steel in the V-shaped magnetic steel groove (9) is the same as the polarity of the outer side faces of the permanent magnet steel in the first magnetic steel groove (7) and the second magnetic steel groove (10) inside the V-shaped magnetic steel groove (9).
3. A low magnetic distortion permanent magnet generator according to claim 1, wherein: the outer ends of the V-shaped magnetic steel grooves (9), the outer ends of the second magnetic steel grooves (10) and the outer circle of the rotor core (6) are respectively provided with a non-communication distance of 1.5mm, and the non-communication distance of 1.5mm is arranged between the inner ends of the second magnetic steel grooves (10) and the left ends of the magnetism isolating grooves (8).
4. A low magnetic distortion permanent magnet generator according to claim 1, wherein: the length of the polar arc between the right end of the V-shaped magnetic steel groove (9) and the outer end of the second magnetic steel groove (10) is equal to the length of the polar arc of the V-shaped magnetic steel groove (9), and the length of the polar arc of the V-shaped magnetic steel groove (9) is equal to 1/3 of the length of the corresponding polar arc between the left end of the first magnetic steel groove (7) and the right end of the magnetism isolating groove (8).
5. A voltage-stabilizing power generation system comprises a generator and a voltage-stabilizing controller, and is characterized in that: the generator is a permanent magnet generator with low magnetic density distortion rate as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310828148.3A CN116846106A (en) | 2023-07-07 | 2023-07-07 | Permanent magnet generator with low magnetic density distortion rate and voltage-stabilizing power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310828148.3A CN116846106A (en) | 2023-07-07 | 2023-07-07 | Permanent magnet generator with low magnetic density distortion rate and voltage-stabilizing power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN116846106A true CN116846106A (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310828148.3A Pending CN116846106A (en) | 2023-07-07 | 2023-07-07 | Permanent magnet generator with low magnetic density distortion rate and voltage-stabilizing power generation system |
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| CN (1) | CN116846106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175880A (en) * | 2023-11-02 | 2023-12-05 | 山东理工大学 | Permanent magnet driving motor for reducing torque pulsation for new energy automobile |
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2023
- 2023-07-07 CN CN202310828148.3A patent/CN116846106A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175880A (en) * | 2023-11-02 | 2023-12-05 | 山东理工大学 | Permanent magnet driving motor for reducing torque pulsation for new energy automobile |
| CN117175880B (en) * | 2023-11-02 | 2024-03-19 | 山东理工大学 | Permanent magnet driving motor for reducing torque pulsation for new energy automobile |
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