CN210016340U - Rotor for mixed magnetic motor and mixed magnetic motor thereof - Google Patents
Rotor for mixed magnetic motor and mixed magnetic motor thereof Download PDFInfo
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- CN210016340U CN210016340U CN201921164948.5U CN201921164948U CN210016340U CN 210016340 U CN210016340 U CN 210016340U CN 201921164948 U CN201921164948 U CN 201921164948U CN 210016340 U CN210016340 U CN 210016340U
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Abstract
The utility model relates to a rotor for a mixed magnetic motor and a mixed magnetic motor thereof, which comprises a rotor iron core; the rotor comprises a rotor core, a rotor core and a plurality of magnetic units, wherein the rotor core is internally provided with the plurality of magnetic units, each magnetic unit comprises an outer layer magnetic isolation groove and two inner layer magnetic isolation grooves, the two inner layer magnetic isolation grooves are V-shaped, the outer layer magnetic isolation groove is positioned in an opening formed by the two inner layer magnetic isolation grooves to form the V shape, an outer layer permanent magnet is arranged in the outer layer magnetic isolation groove, and an inner layer permanent magnet is arranged in the inner layer magnetic isolation groove; in the same magnetic unit, the outer layer permanent magnet and the inner layer permanent magnet have the same magnetic pole; opposite magnetic poles are formed between the inner permanent magnet and the outer permanent magnet of one magnetic unit and between the inner permanent magnet and the outer permanent magnet of the other magnetic unit. The utility model provides a mutual restriction of permanent magnet quantity between motor high power density/torque density, low cost and high anti demagnetization ability, reach the purpose that motor power density is high, low cost, anti demagnetization ability is strong.
Description
Technical Field
The utility model relates to an electric motor rotor and mix the magnetic motor, especially a mix magnetic motor and use rotor and mix the magnetic motor thereof belongs to the technical field of motor.
Background
With the promotion of industrialization and the implementation of energy-saving and emission-reducing policies, the energy efficiency of the motor serving as a power source of industrial equipment is improved year by year. Permanent magnet motors, especially rare earth permanent magnet motors, have been widely used in various industries in recent years due to their advantages of high power, high torque density, and high efficiency, and gradually replace the original induction motors. Rare earth is used as a national strategic reserve material, the environmental pollution caused by the exploitation and extraction of the rare earth is great, and the proportion of the cost of the rare earth permanent magnet in the total cost of the motor is increased year by year along with the increase of environmental awareness and labor cost. The market urgently needs the rare earth permanent magnet motor with high efficiency and low cost.
Technically, rare earth free or light rare earth solutions have been used in the past to reduce the cost of permanent magnet motors while keeping the efficiency of the motor from decreasing. However, the rare earth-free technical scheme of replacing the rare earth permanent magnet by ferrite can increase the volume of the motor under the condition of meeting the requirements on efficiency and cost, and is difficult to meet certain occasions with high requirements on the weight and the installation space of the motor; by adopting the scheme of the permanent magnet motor with light rare earth, although the efficiency, the cost and the volume of the motor can meet the requirements, after the light rare earth is used for replacing heavy rare earth, the demagnetization resistance of the permanent magnet motor is reduced, the demagnetization risk of the motor is increased, and the reliability is reduced.
Therefore, a motor with high efficiency, low cost and high reliability needs to be researched urgently.
Disclosure of Invention
The utility model aims at overcoming the not enough that exists among the prior art, provide a mix for magnet motor rotor and mix the magnet motor thereof, it has solved the mutual restriction of permanent magnet quantity between motor high power density/torque density, low-cost and high anti demagnetization ability, reaches the purpose that motor power density is high, low cost, anti demagnetization ability is strong.
According to the technical scheme provided by the utility model, the rotor for the mixed magnetic motor comprises a rotor iron core; the rotor comprises a rotor core, a rotor core and a plurality of magnetic units, wherein the rotor core is internally provided with the plurality of magnetic units, each magnetic unit comprises an outer layer magnetic isolation groove and two inner layer magnetic isolation grooves, the two inner layer magnetic isolation grooves are V-shaped, the outer layer magnetic isolation groove is positioned in an opening formed by the two inner layer magnetic isolation grooves to form the V shape, an outer layer permanent magnet is arranged in the outer layer magnetic isolation groove, and an inner layer permanent magnet is arranged in the inner layer magnetic isolation groove;
in the same magnetic unit, the outer layer permanent magnet and the inner layer permanent magnet have the same magnetic pole; opposite magnetic poles are formed between the inner permanent magnet and the outer permanent magnet of one magnetic unit and between the inner permanent magnet and the outer permanent magnet of the other magnetic unit.
The rotor core is positioned in the inner circle of the stator, and the two inner-layer magnetism isolating grooves form a V-shaped opening pointing to the stator;
when the outer permanent magnet and the inner permanent magnet are rare earth permanent magnets, the following relational expression is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet and the inner permanent magnet are ferrite permanent magnets, the following relational expressions are satisfied: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness of the inner permanent magnet, LwIs the thickness of the outer permanent magnet, LcIs the stator tooth width, LnwOf adjacent inner-layer magnetic-separation slots between adjacent magnetic units in rotor core, LbcIs the yoke width.
The outer-layer magnetism isolating groove is in a straight shape and is close to the edge of the outer ring of the rotor core on the rotor core.
The utility model provides a mix magnetic motor, include motor shaft and assemble in epaxial rotor of motor shaft and stator, the rotor is arranged in the interior circle of stator, the rotor includes rotor core, characterized by: the rotor comprises a rotor core, a rotor core and a plurality of magnetic units, wherein the rotor core is internally provided with the plurality of magnetic units, each magnetic unit comprises an outer layer magnetic isolation groove and two inner layer magnetic isolation grooves, the two inner layer magnetic isolation grooves are V-shaped, the outer layer magnetic isolation groove is positioned in an opening formed by the two inner layer magnetic isolation grooves to form the V shape, an outer layer permanent magnet is arranged in the outer layer magnetic isolation groove, and an inner layer permanent magnet is arranged in the inner layer magnetic isolation groove;
in the same magnetic unit, the outer layer permanent magnet and the inner layer permanent magnet have the same magnetic pole; opposite magnetic poles are formed between the inner permanent magnet and the outer permanent magnet of one magnetic unit and between the inner permanent magnet and the outer permanent magnet of the other magnetic unit.
Two inner-layer magnetism isolating grooves of a magnetic unit form a V-shaped opening pointing to the stator;
when the outer permanent magnet and the inner permanent magnet are rare earth permanent magnetsIn the case of a magnet, the following relation is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet and the inner permanent magnet are ferrite permanent magnets, the following relational expressions are satisfied: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness of the inner permanent magnet, LwIs the thickness of the outer permanent magnet, LcIs the stator tooth width, LnwOf adjacent inner-layer magnetic-separation slots between adjacent magnetic units in rotor core, LbcIs the yoke width of the stator core.
The outer-layer magnetism isolating groove is in a straight shape and is close to the edge of the outer ring of the rotor core on the rotor core.
The stator comprises a stator core, a plurality of stator core slots are arranged in the stator core, and the stator winding is arranged in the stator core slots.
The utility model has the advantages that: the rotor comprises a rotor core, a rotor core and a plurality of magnetic units, wherein each magnetic unit comprises an outer-layer magnetic isolation groove and two inner-layer magnetic isolation grooves, the two inner-layer magnetic isolation grooves are V-shaped, the outer-layer magnetic isolation groove is positioned in an opening formed by the inner-layer magnetic isolation grooves to form the V-shaped opening, an inner-layer permanent magnet is arranged in the inner-layer magnetic isolation groove, and an inner-layer permanent magnet is arranged in the inner-layer magnetic isolation groove; in the same magnetic unit, the outer layer permanent magnet and the inner layer permanent magnet have the same magnetic pole; between two adjacent magnetic units, the opposite magnetic poles are present between the inner and outer layer permanent magnets and the inner layer permanent magnet of one magnetic unit and the inner and outer layer permanent magnets and the inner layer permanent magnet of the other magnetic unit, thereby solving the problem that the consumption of the permanent magnets is mutually restricted between the high power density/torque density, low cost and high demagnetization resistance of the motor, and ensuring that the motor has high power density, low cost and strong demagnetization resistance.
Drawings
Fig. 1 is a schematic structural view of the rotor of the present invention.
Fig. 2 is a schematic structural diagram of the stator of the present invention.
Fig. 3 is a schematic view of the stator, the rotor and the motor shaft of the present invention.
Description of reference numerals: 1-stator, 2-rotor, 3-motor shaft, 4-stator core, 5-stator winding, 6-outer permanent magnet, 7-rotor core, 8-outer magnetic isolation slot, 9-inner magnetic isolation slot, 10-stator core slot and 11-inner permanent magnet.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
As shown in fig. 1: in order to solve the mutual restriction of the permanent magnet consumption between high power density/torque density, low cost and high demagnetization resistance of the motor and achieve the purposes of high power density, low cost and strong demagnetization resistance of the motor, the rotor 2 of the utility model comprises a rotor core 7; a plurality of magnetic units are arranged in the rotor core 7, each magnetic unit comprises an outer layer magnetic isolation groove 8 and two inner layer magnetic isolation grooves 9, a V-shaped space is formed between the two inner layer magnetic isolation grooves 9, the outer layer magnetic isolation groove 8 is positioned in a V-shaped opening formed by the two inner layer magnetic isolation grooves 9, an outer layer permanent magnet 6 is arranged in the outer layer magnetic isolation groove 8, and an inner layer permanent magnet 11 is arranged in the inner layer magnetic isolation groove 9;
in the same magnetic unit, the outer permanent magnet 6 and the inner permanent magnet 11 have the same magnetic pole; opposite magnetic poles are formed between the inner layer permanent magnet 6 and the outer layer permanent magnet 11 of one magnetic unit and between the inner layer permanent magnet 6 and the inner layer permanent magnet 11 of the other magnetic unit between two adjacent magnetic units.
Specifically, the number of magnetic units in the rotor core 7 may be selected as needed, and is well known to those skilled in the art, and will not be described herein again. To every magnetism unit in rotor core 7, all include an outer magnetism-isolating groove 8 and two inlayer magnetism-isolating grooves 9, form the structure of V type between two inlayer magnetism-isolating grooves 9, outer magnetism-isolating groove 8 is located two inlayer magnetism-isolating grooves 9 and constitutes the opening of V type, during concrete implementation, outer magnetism-isolating groove 8 is a style of calligraphy, and outer magnetism-isolating groove 8 is close to on rotor core 7's outer lane edge.
In the embodiment of the utility model, an outer layer permanent magnet 6 is arranged in the outer layer magnetism isolating groove 8, and an inner layer permanent magnet 11 is arranged in each inner layer magnetism isolating groove 9; in the same magnetic unit, the outer layer permanent magnet 6 and the inner layer permanent magnet 11 have the same magnetic pole; opposite magnetic poles are formed between the inner layer permanent magnet 6 and the outer layer permanent magnet 11 of one magnetic unit and between the inner layer permanent magnet 6 and the inner layer permanent magnet 11 of the other magnetic unit between two adjacent magnetic units. In fig. 1, the inner and outer permanent magnets 6 and the inner permanent magnet 11 in one magnetic unit are both N magnetic poles, and the outer permanent magnet 6 and the inner permanent magnet 11 in the other adjacent magnetic unit are both S magnetic poles.
Further, the rotor core 7 is positioned in the inner circle of the stator 1, and the two inner-layer magnetism isolating grooves 9 form a V-shaped opening pointing to the stator 1;
when the outer permanent magnet 6 and the inner permanent magnet 11 are rare earth permanent magnets, the following relational expression is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet 6 and the inner permanent magnet 11 are ferrite permanent magnets, the following relational expression is satisfied: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness, L, of the inner permanent magnet 11wIs the thickness, L, of the outer permanent magnet 6cIs the stator tooth width, LnwOf adjacent inner layer magnetic separation grooves 9 between adjacent magnetic units in rotor core 7bcIs the yoke width of the stator 1.
The embodiment of the utility model provides an in, stator 1 and the cooperation of rotor 2, rotor core 7 is arranged in stator 1's interior circle promptly, and two inlayer magnetism isolating grooves 9 constitute the directional stator 1 of opening of V type, and outer magnetism isolating grooves 8 are at rotor core 7's outer lane edge. In specific implementation, the two inner layer isolation grooves 9 are symmetrically distributed on two sides of the axis of the outer layer isolation groove 8. According to different types of the outer layer permanent magnet 6 and the inner layer permanent magnet 11, the rotor core 7 and the stator 1 need to meet corresponding conditions.
As shown in fig. 1,2 and 3, a mixed magnetic motor can be obtained, specifically, the mixed magnetic motor includes a motor shaft 3, and a rotor 2 and a stator 1 assembled on the motor shaft 3, the rotor 2 is located in an inner circle of the stator 1, the rotor 2 includes a rotor core 7, a plurality of magnetic units are arranged in the rotor core 7, each magnetic unit includes an outer layer magnetism-isolating groove 8 and two inner layer magnetism-isolating grooves 9, a V-shaped space is formed between the two inner layer magnetism-isolating grooves 9, the outer layer magnetism-isolating groove 8 is located in an opening of the V-shaped space formed by the two inner layer magnetism-isolating grooves 9, an outer layer permanent magnet 6 is arranged in the outer layer magnetism-isolating groove 8, and an inner layer permanent magnet 11 is arranged in the inner layer magnetism-isolating groove 9;
in the same magnetic unit, the outer permanent magnet 6 and the inner permanent magnet 11 have the same magnetic pole; opposite magnetic poles are formed between the inner layer permanent magnet 6 and the outer layer permanent magnet 11 of one magnetic unit and between the inner layer permanent magnet 6 and the inner layer permanent magnet 11 of the other magnetic unit between two adjacent magnetic units.
In the embodiment of the utility model, two inner layer magnetism isolating grooves 9 of a magnetic unit form a V-shaped opening pointing stator 1;
when the outer permanent magnet 6 and the inner permanent magnet 11 are rare earth permanent magnets, the following relational expression is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet 6 and the inner permanent magnet 11 are ferrite permanent magnets, the following relational expression is satisfied: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness, L, of the inner permanent magnet 11wIs the thickness, L, of the outer permanent magnet 6cIs the stator tooth width, LnwOf adjacent inner layer magnetic separation grooves 9 between adjacent magnetic units in rotor core 7bcThe yoke width of the stator core 4.
The outer-layer magnetism isolating groove 8 is in a straight line shape, and the outer-layer magnetism isolating groove 8 is close to the edge of the outer ring of the rotor iron core 7 on the rotor iron core 7. The stator 1 comprises a stator core 4, a plurality of stator core slots 10 are arranged in the stator core 4, and the stator winding 5 is arranged in the stator core slots 10.
The embodiment of the utility model provides an in, stator core 5 is the multislot structure, and the quantity of stator core groove 10 is S (S is greater than 1) promptly, and stator winding 5 is arranged in stator core groove 10. The rotor core 7 is placed in the inner circle of the stator core 4, and P (P is 2P, and P is a pole pair number of 1,2,3 … …) magnetic units are arranged inside the rotor core 7 and close to the outer circle of the rotor.
The utility model discloses set up a plurality of magnetism units in rotor core 7, including an outer magnetism-isolating groove 8 and two inlayer magnetism-isolating grooves 9 in each magnetism unit, two inlayer magnetism-isolating grooves 9 are the V type, and outer magnetism-isolating groove 8 is located inlayer magnetism-isolating groove 9 and constitutes the opening of V type, sets up inlayer permanent magnet 6 in inlayer magnetism-isolating groove 8, sets up inlayer permanent magnet 11 in inlayer magnetism-isolating groove 9; in the same magnetic unit, the outer permanent magnet 6 and the inner permanent magnet 11 have the same magnetic pole; between two adjacent magnetic units, a magnetic pole with opposite polarity is present between the inner and outer layer permanent magnets 6 and the inner layer permanent magnet 11 of one magnetic unit and the inner and outer layer permanent magnets 6 and the inner layer permanent magnet 11 of the other magnetic unit, thereby solving the problem that the consumption of the permanent magnets is mutually restricted between the high power density/torque density, low cost and high demagnetization resistance of the motor, and leading the motor to have high power density, low cost and strong demagnetization resistance.
Claims (7)
1. A rotor for a hybrid reluctance machine includes a rotor core (7); the method is characterized in that: arranging a plurality of magnetic units in the rotor core (7), wherein each magnetic unit comprises an outer layer magnetic isolation groove (8) and two inner layer magnetic isolation grooves (9), a V-shaped space is formed between the two inner layer magnetic isolation grooves (9), the outer layer magnetic isolation groove (8) is positioned in a V-shaped opening formed by the two inner layer magnetic isolation grooves (9), an outer layer permanent magnet (6) is arranged in the outer layer magnetic isolation groove (8), and an inner layer permanent magnet (11) is arranged in the inner layer magnetic isolation groove (9);
in the same magnetic unit, the outer layer permanent magnet (6) and the inner layer permanent magnet (11) have the same magnetic pole; opposite magnetic poles are formed between the inner layer permanent magnet (6) and the outer layer permanent magnet (11) of one magnetic unit and between the inner layer permanent magnet (6) and the outer layer permanent magnet (11) of the other magnetic unit between two adjacent magnetic units.
2. The rotor for a hybrid magnetic motor according to claim 1, wherein: the rotor iron core (7) is positioned in the inner circle of the stator (1), and the two inner-layer magnetism isolating grooves (9) form a V-shaped opening pointing to the stator (1);
when the outer permanent magnet (6) and the inner permanent magnet (11) are rare earth permanent magnets, the following relational expression is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet (6) and the inner permanent magnet (11) are ferrite permanent magnets, the requirements are metThe following relation: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness, L, of the inner layer permanent magnet (11)wThe thickness L of the outer permanent magnet (6)cIs the stator tooth width, LnwIs an adjacent inner layer magnetism isolating groove (9) between adjacent magnetic units in a rotor iron core (7)bcIs the yoke width of the stator (1).
3. The rotor for a hybrid reluctance machine according to claim 1 or 2, wherein: the outer-layer magnetism isolating groove (8) is in a straight line shape, and the outer-layer magnetism isolating groove (8) is close to the edge of the outer ring of the rotor core (7) on the rotor core (7).
4. The utility model provides a mix magnetic motor, include motor shaft (3) and assemble in rotor (2) and stator (1) on motor shaft (3), rotor (2) are located the interior circle of stator (1), rotor (2) include rotor core (7), characterized by: arranging a plurality of magnetic units in the rotor core (7), wherein each magnetic unit comprises an outer layer magnetic isolation groove (8) and two inner layer magnetic isolation grooves (9), a V-shaped space is formed between the two inner layer magnetic isolation grooves (9), the outer layer magnetic isolation groove (8) is positioned in a V-shaped opening formed by the two inner layer magnetic isolation grooves (9), an outer layer permanent magnet (6) is arranged in the outer layer magnetic isolation groove (8), and an inner layer permanent magnet (11) is arranged in the inner layer magnetic isolation groove (9);
in the same magnetic unit, the outer layer permanent magnet (6) and the inner layer permanent magnet (11) have the same magnetic pole; opposite magnetic poles are formed between the inner layer permanent magnet (6) and the outer layer permanent magnet (11) of one magnetic unit and between the inner layer permanent magnet (6) and the outer layer permanent magnet (11) of the other magnetic unit between two adjacent magnetic units.
5. The mixed magnetic motor of claim 4, wherein: two inner-layer magnetism isolating grooves (9) of a magnetic unit form a V-shaped opening pointing to the stator (1);
when the outer permanent magnet (6) and the inner permanent magnet (11) are rare earth permanent magnets, the following relational expression is satisfied: 1.2Ln≤Lw≤2Ln；
When the outer permanent magnet (6) and the inner permanent magnet (11) are ferrite permanent magnets, the following relational expression is satisfied: 1.5Ln≤Lw≤2.4LnAnd L isc＜Lnw＜Lbc；
Wherein L isnIs the thickness, L, of the inner layer permanent magnet (11)wThe thickness L of the outer permanent magnet (6)cIs the stator tooth width, LnwIs an adjacent inner layer magnetism isolating groove (9) between adjacent magnetic units in a rotor iron core (7)bcIs the width of the yoke part of the stator core (4).
6. The mixed magnetic motor according to claim 4 or 5, wherein: the outer-layer magnetism isolating groove (8) is in a straight line shape, and the outer-layer magnetism isolating groove (8) is close to the edge of the outer ring of the rotor core (7) on the rotor core (7).
7. The mixed magnetic motor of claim 4, wherein: the stator (1) comprises a stator core (4), a plurality of stator core slots (10) are formed in the stator core (4), and the stator winding (5) is arranged in the stator core slots (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921164948.5U CN210016340U (en) | 2019-07-23 | 2019-07-23 | Rotor for mixed magnetic motor and mixed magnetic motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921164948.5U CN210016340U (en) | 2019-07-23 | 2019-07-23 | Rotor for mixed magnetic motor and mixed magnetic motor thereof |
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| Publication Number | Publication Date |
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| CN210016340U true CN210016340U (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921164948.5U Active CN210016340U (en) | 2019-07-23 | 2019-07-23 | Rotor for mixed magnetic motor and mixed magnetic motor thereof |
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| CN (1) | CN210016340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277851A (en) * | 2019-07-23 | 2019-09-24 | 中达电机股份有限公司 | Mixed magneto rotor and its mixed magneto |
-
2019
- 2019-07-23 CN CN201921164948.5U patent/CN210016340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277851A (en) * | 2019-07-23 | 2019-09-24 | 中达电机股份有限公司 | Mixed magneto rotor and its mixed magneto |
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