CN114640232A - Side-by-side double-stator staggered-tooth permanent magnet vernier motor - Google Patents

Side-by-side double-stator staggered-tooth permanent magnet vernier motor Download PDF

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Publication number
CN114640232A
CN114640232A CN202210320591.5A CN202210320591A CN114640232A CN 114640232 A CN114640232 A CN 114640232A CN 202210320591 A CN202210320591 A CN 202210320591A CN 114640232 A CN114640232 A CN 114640232A
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CN
China
Prior art keywords
stator
ring
tooth
staggered
rotor
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Application number
CN202210320591.5A
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Chinese (zh)
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CN114640232B (en
Inventor
尚建忠
罗自荣
吴国恒
王长磊
卢钟岳
蒋涛
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National University of Defense Technology
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National University of Defense Technology
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention discloses a side-by-side double-stator staggered tooth permanent magnet vernier motor which comprises two stators and a rotor, wherein the rotor is formed by a permanent magnet and an iron yoke at intervals, and the permanent magnet and the iron yoke are distributed in a magnetism gathering manner; the two stators are respectively arranged outside the rotor and are not in contact; stator teeth are uniformly distributed on the inner ring of the stator, and stator tooth grooves are formed between the adjacent stator teeth and the surface of the inner ring of the stator; the stator and the rotor are coaxially arranged, and the stator teeth of the two stators are staggered and opposite along the direction of a middle rotating shaft of the stator; and a winding is arranged on the stator teeth. The side-by-side double-stator staggered-tooth permanent magnet vernier motor provided by the invention has the advantages of simple structure, high power generation efficiency, good heat dissipation performance, strong stability and the like, and is a permanent magnet vernier motor with the advantages of a single-air-gap permanent magnet vernier motor and a multi-air-gap permanent magnet vernier motor.

Description

Side-by-side double-stator staggered tooth permanent magnet vernier motor
Technical Field
The invention relates to the field of permanent magnet vernier motors, in particular to a side-by-side double-stator staggered tooth permanent magnet vernier motor.
Background
The structural complexity of the permanent magnet vernier motor often contradicts the performance to a certain extent, and the balance between the two needs to be well made. Although the motor with the single air gap structure has a simple structure, the power factor is not high due to large magnetic leakage, and the motor is not suitable for being used as a generator; the motor with the multi-air-gap structure can improve torque density and power factors, but has poor heat dissipation performance, a complex structure and a complex manufacturing process.
Disclosure of Invention
In order to solve the technical problems, the invention provides a parallel double-stator staggered tooth permanent magnet vernier motor which has the advantages of high torque density, power factor, simple structure and the like.
The technical scheme provided by the invention is as follows:
a side-by-side double-stator staggered-tooth permanent magnet vernier motor comprises two stators and a rotor, wherein the rotor is composed of permanent magnets and iron yokes at intervals, and the permanent magnets and the iron yokes are distributed in a magnetism gathering manner;
the two stators are respectively arranged outside the rotor and are not contacted;
stator teeth are uniformly distributed on the inner ring of the stator, and stator tooth grooves are formed between the adjacent stator teeth and the surface of the inner ring of the stator;
the stator and the rotor are coaxially arranged, and the stator teeth of the two stators are staggered and opposite along the direction of a middle rotating shaft of the stator;
and the stator teeth are provided with windings.
The width of the stator teeth is smaller than that of the stator tooth grooves, and the stator teeth are positively opposite to the stator tooth grooves along the direction of a middle rotating shaft of the stator.
The stator comprises a rotor and a stator, and is characterized by further comprising a fixing ring, wherein the fixing ring is arranged outside the rotor, and two ends of the fixing ring are respectively connected with the two stators.
The stator further comprises a support ring, support ring teeth opposite to the tooth grooves are arranged on the support ring, the support ring is matched with the stator, and one end of the support ring is connected with one end of the fixing ring.
The stator is characterized in that each stator is respectively matched with two support rings, the two support rings are coaxially arranged, support ring teeth of the two support rings are respectively inserted into the stator tooth grooves from two ends of the stator, and the support ring teeth of the two support rings positioned in the same stator tooth groove are connected.
The rotor structure comprises a rotor and is characterized by further comprising an adjusting ring, wherein the adjusting ring is arranged on the surface of the inner annular wall of the rotor, and inner end covers are arranged at two ends of the adjusting ring.
The stator further comprises two outer end covers, and two ends of the stator are connected with the outer end covers.
Wherein, still be equipped with the supporting disk on the outer end lid.
Wherein the adjusting ring is connected with the inner end cover through a screw.
The adjusting ring is composed of an adjusting inner ring and an adjusting outer ring, the adjusting inner ring is arranged on the inner wall of the adjusting outer ring, and the adjusting outer ring is connected with the inner wall of the rotor.
Compared with the prior art, the side-by-side double-stator staggered-tooth permanent magnet vernier motor has the advantages of simple structure, high power generation efficiency, good heat dissipation performance, strong stability and the like, has the advantages of simple structure, good heat dissipation performance and simple manufacturing process of a single-air-gap permanent magnet vernier motor, and also has the advantages of high power factor and high torque density of a multi-air-gap permanent magnet vernier motor. The permanent magnet vernier motor has the advantages of both a single-air-gap permanent magnet vernier motor and a multi-air-gap permanent magnet vernier motor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of a rotor and stator of the present invention;
FIG. 2 is a cross-sectional view of a rotor and stator of the present invention;
FIG. 3 is a cross-sectional view of a rotor and stator with windings installed in accordance with the present invention;
FIG. 4 is a perspective view of the rotor and stator of the present invention;
FIG. 5 is an exploded assembly view of the stator, retaining ring and end cap;
FIG. 6 is an exploded assembly view of the present invention;
FIG. 7 is an exploded assembly view of the rotor;
the stator comprises a stator 1, stator teeth 11, stator tooth grooves 12, a rotor 2, a permanent magnet 21, an iron yoke 22, a winding 3, a fixing ring 4, a bracket ring 5, an outer end cover 6, an adjusting ring 7, a supporting disk 8 and an inner end cover 9.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure.
Embodiments of the present invention are written in a progressive manner.
As shown in fig. 1 to 7, a side-by-side double-stator staggered-tooth permanent magnet vernier motor comprises two stators 1 and a rotor 2, and is characterized in that:
the rotor 2 is composed of permanent magnets 21 and iron yokes 22 at intervals, and the permanent magnets 21 and the iron yokes 22 are distributed in a magnetism gathering manner;
the two stators 1 are respectively arranged outside the rotor 2, and the two stators 1 are not contacted;
stator teeth 11 are uniformly distributed on the inner ring of the stator 1, and stator tooth grooves 12 are formed on the adjacent stator teeth 11 and the surface of the inner ring of the stator 1;
the stator 1 and the rotor 2 are coaxially arranged, and the stator teeth 11 of the two stators 1 are staggered and opposite along the direction of a rotating shaft in the stator 1;
and a winding 3 is arranged on the stator tooth 11.
The stator teeth 11 are arranged in a staggered mode, so that a magnetic circuit is smoother, the magnetic flux leakage is small, the magnetic flux density peak value is large, and the main magnetic flux performance is better.
As shown in fig. 2 and fig. 3, the rotor 2 of the present invention is composed of permanent magnets 21 and iron yokes 22 in a magnetic flux concentration type distribution, the magnetic pole center line of each permanent magnet 21 is located in the tangential direction of the rotor 2, and the arrangement of the poles to the poles greatly enhances the air gap flux density, and improves the utilization rate of the permanent magnets 21.
Further, the width of the stator teeth 11 is smaller than that of the stator slots 12, and the stator teeth 11 are directly opposite to the stator slots 12 along the direction of the rotation axis of the stator 1.
Further, still include solid fixed ring 4, gu fixed ring 4 establishes the rotor 2 is outside, gu fixed ring 4's both ends are connected with two stators 1 respectively. The fixed ring 4 can enable the two stators 1 to have a certain spacing distance without direct contact, and magnetic circuit interference is reduced.
Compared with a double-stator structure with double air gaps, the inner diameter and the outer diameter of the two stators of the side-by-side double-stator staggered tooth vernier motor are completely the same, the side-by-side air gap structure with the two air gap radii completely the same is more similar to a single air gap structure, the structural complexity of the motor is greatly simplified, and the connection and the fixation are reduced.
Further, still include support ring 5, be equipped with on support ring 5 with 5 teeth of support ring that the tooth's socket is relative, support ring 5 with stator 1 phase-match, the one end of support ring 5 with the one end of solid fixed ring 4 is connected.
Furthermore, each stator 1 is respectively matched with two support rings 5, the two support rings 5 are coaxially arranged, teeth of the support rings 5 of the two support rings 5 are respectively inserted into the stator tooth grooves 12 from two ends of the stator 1, and the teeth of the support rings 5 of the two support rings 5 positioned in the same stator tooth groove 12 are connected.
The rotor structure is characterized by further comprising an adjusting ring 7, wherein the adjusting ring 7 is arranged on the surface of the inner annular wall of the rotor 2, and inner end covers 9 are arranged at two ends of the adjusting ring 7.
Further, two outer end covers 6 are included, and two ends of the stator 1 are connected with the outer end covers 6.
Further, both ends of the stator 1 are connected to the outer end caps 6 by screws.
Further, a support disc 8 is further arranged on the outer end cover 6.
Further, the adjusting ring 7 and the inner end cap 9 may be connected by means of screws or the like.
Furthermore, the adjusting ring 7 is composed of an adjusting inner ring and an adjusting outer ring, the adjusting inner ring is arranged on the inner wall of the adjusting outer ring, and the adjusting outer ring is connected with the inner wall of the rotor 2. The adjusting outer ring mainly serves to support the rotor 2, which consists of permanent magnets 21 and iron yokes 22, and the adjusting inner ring is used for connection with the blades inside the motor.
Further, the fixing ring 4 and the holder ring 5 may be connected by means of screws or the like.
According to the side-by-side double-stator staggered-tooth permanent magnet vernier motor, the stator 1 and the rotor 2 are coaxially assembled, the outer part of the motor is supported by the two supporting disks 8, and power can be generated by the rotation between the stator 1 and the rotor 2. The relative motion of two stators 1 and rotors 2 which are coaxially and alternately arranged enables the motor to be equivalent to the superposition of two motors, the motor is composed of two stators and rotors 2, and the two stators 1 are coaxially arranged to form two air gaps. Compared with a double-stator 1 structure with double air gaps, the inner and outer diameters of the two stators 1 of the side-by-side double-stator 1 staggered tooth vernier motor are completely the same, and the side-by-side air gap structure with the two air gaps with the same radius is more like a single air gap structure. Moreover, the structure of the stator belongs to a double-air-gap structure, but the two are staggered up and down at the upper end and the lower end of the stator 1 and do not interfere with each other, so that the stator can be regarded as a single-air-gap structure. The magnetic flux leakage preventing effect can be achieved, and the purpose of optimizing the mechanical structure can be achieved.
The invention has simple structure, simple manufacturing process and better low-speed performance.
The multi-tooth split pole structure is beneficial to reducing the armature electric density and heat dissipation, thereby reducing the loss of the motor and improving the efficiency.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a two stator staggered teeth permanent magnet vernier motors side by side, includes two stators (1) and a rotor (2), its characterized in that:
the rotor (2) is composed of permanent magnets (21) and iron yokes (22) at intervals, and the permanent magnets (21) and the iron yokes (22) are distributed in a magnetism gathering manner;
the two stators (1) are respectively arranged outside the rotor (2), and the two stators (1) are not contacted;
stator teeth (11) are uniformly distributed on the inner ring of the stator (1), and stator tooth grooves (12) are formed on the surfaces of the adjacent stator teeth (11) and the inner ring of the stator (1);
the stator (1) and the rotor (2) are coaxially mounted, and the stator teeth (11) of the two stators (1) are staggered and opposite along the direction of a rotating shaft in the stator (1);
and a winding (3) is arranged on the stator teeth (11).
2. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 1, wherein:
the width of the stator teeth (11) is smaller than that of the stator tooth grooves (12), and the stator teeth (11) are just opposite to the stator tooth grooves (12) along the direction of a rotating shaft in the stator (1).
3. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 2, wherein:
still including solid fixed ring (4), gu fixed ring (4) are established rotor (2) are outside, gu fixed ring 4's both ends are connected with two stators (1) respectively.
4. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 3, wherein:
still include support ring (5), be equipped with on support ring (5) with support ring (5) tooth that the tooth's socket is relative, support ring (5) with stator (1) phase-match, the one end of support ring (5) with the one end of solid fixed ring (4) is connected.
5. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 4, wherein:
each stator (1) is respectively matched with two support rings (5), the two support rings (5) are coaxially arranged, teeth of the support rings (5) of the two support rings (5) are respectively inserted into the stator tooth grooves (12) from two ends of the stator (1), and teeth of the support rings (5) of the two support rings (5) positioned in the same stator tooth groove (12) are connected.
6. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 5, wherein:
still include adjustable ring (7), establish adjustable ring (7) the inner annular wall surface of rotor (2), the both ends of adjustable ring (7) are equipped with interior end cover (9).
7. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 5, wherein:
the stator is characterized by further comprising two outer end covers (6), and two ends of the stator (1) are connected with the outer end covers (6).
8. The side-by-side double-stator staggered-tooth permanent magnet vernier motor as claimed in claim 6 or 7, wherein:
and a supporting disk (8) is also arranged on the outer end cover (6).
9. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 8, wherein:
the adjusting ring (7) is connected with the inner end cover (9) through screws.
10. The side-by-side double-stator staggered-tooth permanent-magnet vernier motor as claimed in claim 9, wherein:
the adjusting ring (7) is composed of an adjusting inner ring and an adjusting outer ring, the adjusting inner ring is arranged on the inner wall of the adjusting outer ring, and the adjusting outer ring is connected with the inner wall of the rotor (2).
CN202210320591.5A 2022-03-29 2022-03-29 Side-by-side double-stator staggered-tooth permanent magnet vernier motor Active CN114640232B (en)

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