CN116111750A - Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor - Google Patents

Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor Download PDF

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Publication number
CN116111750A
CN116111750A CN202310329958.4A CN202310329958A CN116111750A CN 116111750 A CN116111750 A CN 116111750A CN 202310329958 A CN202310329958 A CN 202310329958A CN 116111750 A CN116111750 A CN 116111750A
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CN
China
Prior art keywords
permanent magnet
flux switching
stator
rotor
magnetic flux
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Pending
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CN202310329958.4A
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Chinese (zh)
Inventor
花为
吴铎
张志恒
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Southeast University
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Southeast University
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Application filed by Southeast University filed Critical Southeast University
Priority to CN202310329958.4A priority Critical patent/CN116111750A/en
Publication of CN116111750A publication Critical patent/CN116111750A/en
Pending legal-status Critical Current

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    • 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
    • H02K1/17—Stator cores with permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • 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
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • 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
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The invention discloses a paddle-free shaft type rim propeller based on a magnetic flux switching type permanent magnet motor, which belongs to the technical field of ship propulsion and comprises an external guide pipe, a magnetic flux switching type permanent magnet motor stator, a magnetic flux switching type permanent magnet motor rotor, embedded paddles, a rotor cover plate, a water lubrication thrust bearing and a stator insulation waterproof sheath; the magnetic flux switching type permanent magnet motor stator comprises a modularized stator core, modularized stator permanent magnets and stator windings which are distributed circumferentially. The stator of the magnetic flux switching type permanent magnet motor adopts a modularized structure, and the number of stages of the stator of the magnetic flux switching type permanent magnet motor and the rotor of the magnetic flux switching type permanent magnet motor can be changed; the integrity and the stability are high; the modularized permanent magnet can be axially segmented, the rotor cover plate can be provided with a runner for providing heat dissipation for the rotor, and the stator insulation waterproof sheath plays roles of insulation waterproof and heat conduction; the magnetic flux switching type permanent magnet motor rotor is a silicon steel sheet with a simple structure, can be suitable for high-speed places, and is convenient to maintain.

Description

Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor
Technical Field
The invention belongs to the technical field of ship propulsion, and particularly relates to a rotor-free shaft type rim propeller based on a magnetic flux switching type permanent magnet motor.
Background
In recent years, as the trade of shipping between countries expands, the demand for tonnage and propulsion power of ships increases, and the size and strength of main units and the demand for power and parts of main units also increases. The propulsion shafting structure is complex in design, the space utilization rate of the ship can be reduced, the energy loss is increased, the propulsion efficiency is reduced, and more shafting vibration, noise and other hazards are brought. Based on this, a shaftless rim propeller concept is created. The motor rotor and the blades are integrated, and the electric energy is adopted to directly transfer power, so that the space utilization rate of the ship is increased, the vibration and noise are reduced, and the motor rotor and the blades are very suitable for application places with limited cabin capacity and high concealment requirements, such as torpedoes, submarines, warships and the like. According to the structural characteristics of the shaftless rim propeller, the propeller is mainly divided into a shaft type with a paddle and a shaft type without the paddle. The initially developed paddle shaft rim propeller has low propulsion efficiency because the supporting hub occupies a substantial portion of the flow area inside the duct. With the continued development of technology, a paddle-free shaft-type rim propeller has been developed that places a paddle support structure into a conduit, increasing the flow area and propulsion efficiency within the conduit.
The reliable operation of the shaftless rim propeller is a hot problem studied by the skilled person, and the existing rim propeller built-in integrated motor mainly comprises a brushless direct current motor, a permanent magnet synchronous motor and a permanent magnet fault-tolerant motor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a rotor-free shaft type rim propeller based on a magnetic flux switching type permanent magnet motor so as to solve the problems in the prior art.
The aim of the invention can be achieved by the following technical scheme:
a rotor-free shaft type rim propeller based on a magnetic flux switching type permanent magnet motor comprises an external guide pipe, a magnetic flux switching type permanent magnet motor stator, a magnetic flux switching type permanent magnet motor rotor, embedded paddles, a rotor cover plate, a water lubrication thrust bearing and a stator insulation waterproof sheath;
the external guide tube is sleeved outside the magnetic flux switching type permanent magnet motor stator, the magnetic flux switching type permanent magnet motor rotor is arranged inside the magnetic flux switching type permanent magnet motor stator, the embedded blades are embedded inside the magnetic flux switching type permanent magnet motor rotor, the rotor cover plate is arranged on two sides of the magnetic flux switching type permanent magnet motor rotor and the embedded blades, water lubrication thrust bearings are arranged on the outer side of the rotor cover plate and are connected with the external guide tube, the stator insulation waterproof sheath is arranged at an air gap between the magnetic flux switching type permanent magnet motor stator and the magnetic flux switching type permanent magnet motor rotor, and the stator insulation waterproof sheath is tightly attached to the magnetic flux switching type permanent magnet motor stator;
the magnetic flux switching type permanent magnet motor stator comprises a modularized stator core, modularized stator permanent magnets and stator windings which are circumferentially distributed, wherein the modularized permanent magnets are mutually embedded with the modularized stator core, and the stator windings are wound in the modularized stator core slots.
Preferably, the radial dimension of the magnetic flux switching permanent magnet motor stator can be changed along with the axial length of the motor, and the radial dimension of one end of the magnetic flux switching permanent magnet motor stator can be unequal to the radial dimension of the other end.
Preferably, the radial dimension of the rotor of the magnetic flux switching type permanent magnet motor can be changed along with the axial length of the motor, and the radial dimension of one end of the rotor of the magnetic flux switching type permanent magnet motor can be unequal to the radial dimension of the other end.
Preferably, the rotor of the magnetic flux switching permanent magnet motor can adopt a skewed pole structure and a potting material between rotor teeth.
Preferably, the number of segments of the modular stator permanent magnet in the axial direction is adjustable.
Preferably, the two sides of the modularized stator permanent magnet are provided with protrusions, the two sides of the modularized stator iron core are provided with grooves, and when the modularized stator permanent magnet and the modularized stator iron core are closed along the circumference, the protrusions of the modularized permanent magnet are embedded into the grooves of the modularized stator iron core.
Preferably, the stator winding is a centralized winding and is tightly wound on the stator of the magnetic flux switching type permanent magnet motor through an insulating layer, the insulating waterproof sheath of the stator is made of non-magnetic conduction and good heat conduction materials, and the insulating waterproof sheath extends to the outer guide pipe at the two axial ends of the stator of the magnetic flux switching type permanent magnet motor and is tightly attached to the end part of the stator winding.
Preferably, the outer cover of the embedded blade is provided with a groove, the yoke of the magnetic flux switching type permanent magnet motor rotor is internally provided with a bulge, and the bulge of the magnetic flux switching type permanent magnet motor rotor is embedded into the groove of the embedded blade.
Preferably, the rotor cover plate can be provided with a fluid runner in a grooving mode for cooling the rotor of the magnetic flux switching type permanent magnet motor.
Preferably, the water-lubricated thrust bearing is connected with the rotor cover plate and the external guide pipe, supports the rotor of the magnetic flux switching permanent magnet motor and the embedded blade, and transmits radial forward thrust and radial backward thrust.
The invention has the beneficial effects that:
1. the magnetic flux switching type permanent magnet motor stator adopts a modularized structure, is beneficial to processing and assembly, can ensure higher stator slot filling rate, is provided with modularized permanent magnets, has high integration level, and can change the number of stages, such as horn shape, of the magnetic flux switching type permanent magnet motor stator and the magnetic flux switching type permanent magnet motor rotor so as to improve hydrodynamic performance of the propeller;
2. the modularized permanent magnet and the modularized stator are respectively provided with the grooves and the protrusions, so that the integrity and the stability are high after the integral magnetic flux switching type permanent magnet motor stator is formed, the grooves and the protrusions are respectively arranged inside the magnetic flux switching type permanent magnet motor rotor and outside the embedded type blades, and the rotor cover plate is additionally used for auxiliary fixation, so that the magnetic flux switching type permanent magnet motor rotor and the embedded type blades are high in stability;
3. the modularized permanent magnet can be axially segmented, the rotor teeth of the motor can be provided with an oblique pole structure and a potting material, the rotor cover plate can be provided with a runner for providing heat dissipation for the rotor, the stator insulation waterproof jacket plays an insulation waterproof role, and contacts with the stator winding to provide heat dissipation, so that the electromagnetic performance of the propulsion motor is high;
4. the rotor of the magnetic flux switching type permanent magnet motor is a silicon steel sheet with a simple structure, can be suitable for high-speed places, is convenient to maintain, does not influence a stator permanent magnet by centrifugal force, is not in fluid contact with an operating environment, and has high overall operation reliability.
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, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a schematic view of the structure of the propeller of the present invention including an external conduit;
FIG. 2 is a schematic view of the structure of the propeller of the present invention without an external conduit;
FIG. 3 is a schematic exploded view of the structure of the propeller of the present invention;
FIG. 4 is an exploded front view of the structure of the propeller of the present invention;
FIG. 5 is a schematic view of a portion of the structure of the propeller of the present invention;
FIG. 6 is an exploded schematic view of a portion of the structure of the propeller of the present invention;
FIG. 7 is a schematic diagram of a flux switching permanent magnet motor stator according to the present invention;
in the figure, 1, an external catheter; 2. a flux switching permanent magnet motor stator; 201. a modular stator core; 202. modularized stator permanent magnets; 203. a stator winding; 3. a flux switching permanent magnet motor rotor; 4. an embedded blade; 5. a rotor cover plate; 6. water lubricated thrust bearings; 7. the stator is insulated with a waterproof sheath.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a rotor-free shaft-type rim propeller based on a flux switching permanent magnet motor, wherein, as shown in fig. 1 to 4, the rotor-free shaft-type rim propeller comprises an outer conduit 1 of the rim propeller, a flux switching permanent magnet motor stator 2, a flux switching permanent magnet motor rotor 3, an embedded blade 4, a rotor cover plate 5, a water lubrication thrust bearing 6 and a stator insulation waterproof sheath 7.
The external conduit 1 is sleeved on the outer side of the magnetic flux switching type permanent magnet motor stator 2, the axial length of the external conduit 1 is longer than that of the magnetic flux switching type permanent magnet motor stator 2, the external conduit 1 can be designed into a horn shape according to the installation position of a propeller and hydrodynamic performance requirements, a water channel can be arranged in the external conduit 1 according to cooling requirements, the water channel can be of the prior art, and a water channel type with a better cooling effect can be designed by a person skilled in the art according to the actual structure and size of the conduit and according to hydrodynamics and a fluid-solid coupling principle.
The magnetic flux switching type permanent magnet motor rotor 3 is made of silicon steel, the tooth part is small in height, the yoke part is thin, the rotor center is hollow and is connected with the inner embedded blade 4, the magnetic flux switching type permanent magnet motor rotor 3 can be designed into a horn shape according to the hydrodynamic performance requirement of the propeller and the electromagnetic performance requirement of the motor, the length of an air gap between the stator and the rotor of the propulsion motor is ensured to be constant, the tooth part of the motor rotor can be designed into a sloping pole structure according to the requirement, or the rotor groove is filled with high heat conduction and non-magnetic conduction materials, so that the coupling between the propulsion performance of the propeller and the electromagnetic performance of the motor is met.
The embedded blade 4 is composed of an outer coating and an inner blade, the blade is a blade without a paddle shaft, the blade is attached to the outer coating and connected with a yoke part of the rotor 3 of the external magnetic flux switching permanent magnet motor, the inner rotor has no paddle shaft, compared with the paddle shaft type blade, the rotor 3 of the magnetic flux switching permanent magnet motor and the embedded blade 4 are fixed by the rotor cover plates 5 at the two axial ends and are axially connected with the water lubrication thrust bearing 6, the water lubrication thrust bearing 6 is connected with the external guide tube 1, a supporting effect is provided for the rotor 3 of the magnetic flux switching permanent magnet motor and the embedded blade 4, a radial thrust is transmitted, the rotor cover plates 5 can be provided with fluid channels in a slotting mode according to requirements, and the rotor 3 of the magnetic flux switching permanent magnet motor is cooled.
The stator insulating waterproof sheath 7 is made of non-magnetic conductive and good heat conductive materials, is arranged at an air gap between a stator and a rotor of the motor, is tightly attached to the magnetic flux switching type permanent magnet motor stator 2, extends to the outer guide pipe 1 at two axial ends of the magnetic flux switching type permanent magnet motor stator 2, plays an insulating waterproof role, and conducts heat at the inner side of the magnetic flux switching type permanent magnet motor stator 2 in the radial direction to the cooling water channel of the outer guide pipe 1.
As shown in fig. 5 and 6, the outer coating of the embedded blade 4 is provided with a groove, the yoke of the magnetic flux switching permanent magnet motor rotor 3 is internally provided with a bulge, the bulge of the magnetic flux switching permanent magnet motor rotor 3 is embedded into the groove of the embedded blade 4, the motor rotor is embedded into the blade, the motor rotor provides torque required by blade rotation, and the integrity and stability of a rotor part are improved.
As shown in fig. 7, the flux switching permanent magnet motor stator 2 includes a modular stator core 201, a modular stator permanent magnet 202, and a stator winding 203;
the two sides of the modularized permanent magnet 202 are provided with the protrusions, the two sides of the modularized stator core 201 are provided with the grooves, when all the modularized permanent magnets and the modularized stator core are closed along the circumference, the protrusions of the modularized permanent magnet 202 are embedded into the grooves of the modularized stator core 201, the integrity and stability of the stator can be improved, the modularized stator permanent magnet 202 can be reasonably provided with the number of segments along the axial direction according to the requirement, so that the processing and the reduction of eddy current loss are facilitated, the stator winding 203 is a centralized winding, the stator winding is tightly wound on the motor stator teeth through an insulating layer, one section of the stator winding 203 in a stator slot is usually in a straight line, the front end and the rear end are tightly attached to the stator insulating waterproof sheath 7, the heat generated by the winding is conducted to the external conduit 1, and the heat dissipation capability of the stator part of the propulsion motor is enhanced.
Compared with a brushless direct current motor, a permanent magnet synchronous motor and a permanent magnet fault-tolerant motor which are rim thrusters of an internal integrated motor, the invention avoids the structure that a permanent magnet is arranged on a rotor, the rotor is made of silicon steel material with simple structure, the permanent magnet is arranged at a motor stator, so that the permanent magnet cannot be subjected to centrifugal force when other types of motor permanent magnets rotate along with the rotor, and the permanent magnet is protected by a stator insulating waterproof sheath and is not directly contacted with fluid in an operation environment, thereby greatly prolonging the service life of the permanent magnet and enhancing the operation reliability of the rim thrusters.
The foregoing is merely an embodiment of the present invention, and more particularly, the present invention is implemented in a rotor-free shaft type rim propulsion device using a flux switching permanent magnet motor as a propulsion motor, but the present invention is not limited thereto, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention, such as modifying the number of the modular stator cores 201 and the modular stator permanent magnets 202 in the present embodiment to other reasonable values; or the number of the blades of the embedded blade 4 is changed into other numbers according to the hydrodynamic performance or the change of application occasions; or the rim propeller adopts a propeller shaft type, a transmission propeller shaft is added in the center of a propeller blade, thrust bearings at two ends of a motor are eliminated, and a propulsion motor stator and rotor structure based on a magnetic flux switching type permanent magnet motor design is still adopted; or because of processing requirement, the structure of the modularized stator is not adopted, or the structure of the modularized stator is partially adopted, but the stator part of the propulsion motor based on the magnetic flux switching type permanent magnet motor design is also included in the protection scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Claims (10)

1. The rotor-free shaft type rim propeller based on the magnetic flux switching type permanent magnet motor is characterized by comprising an external guide pipe (1), a magnetic flux switching type permanent magnet motor stator (2), a magnetic flux switching type permanent magnet motor rotor (3), embedded paddles (4), a rotor cover plate (5), a water lubrication thrust bearing (6) and a stator insulation waterproof sheath (7);
the external guide tube (1) is sleeved outside the magnetic flux switching type permanent magnet motor stator (2), the magnetic flux switching type permanent magnet motor rotor (3) is arranged inside the magnetic flux switching type permanent magnet motor stator (2), the embedded blade (4) is embedded inside the magnetic flux switching type permanent magnet motor rotor (3), the rotor cover plate (5) is arranged on two sides of the magnetic flux switching type permanent magnet motor rotor (3) and the embedded blade (4), the water lubrication thrust bearing (6) is arranged on the outer side of the rotor cover plate (5), the water lubrication thrust bearing (6) is simultaneously connected with the external guide tube (1), the stator insulation waterproof jacket (7) is arranged at an air gap between the magnetic flux switching type permanent magnet motor stator (2) and the magnetic flux switching type permanent magnet motor rotor (3), and the stator insulation waterproof jacket (7) is tightly attached to the magnetic flux switching type permanent magnet motor stator (2);
the magnetic flux switching type permanent magnet motor stator (2) comprises modularized stator cores (201), modularized stator permanent magnets (202) and stator windings (203) which are distributed circumferentially, wherein the modularized permanent magnets (202) are mutually embedded with the modularized stator cores (201), and the stator windings (203) are wound inside grooves of the modularized stator cores (201).
2. A rotor-less axial rim propulsion machine based on a flux switching permanent magnet machine according to claim 1, characterized in that the radial dimension of the flux switching permanent magnet machine stator (2) can vary with the machine axial length, the radial dimension of one end of the flux switching permanent magnet machine stator (2) being unequal to the radial dimension of the other end.
3. A rotor-type rim propeller based on a flux switching permanent magnet machine according to claim 1, characterized in that the radial dimension of the flux switching permanent magnet machine rotor (3) can be varied along the machine axial length, the radial dimension of one end of the flux switching permanent magnet machine rotor (3) being unequal to the radial dimension of the other end.
4. A rotor-shaft-type rim propeller based on a flux switching permanent magnet motor according to claim 1, characterized in that the flux switching permanent magnet motor rotor (3) can be made of a skewed pole structure, a rotor tooth space potting material.
5. A rotor-free shaft rim propulsion machine based on flux switching permanent magnet motors according to claim 1, characterized in that the number of segments of the modular stator permanent magnets (202) in the axial direction is adjustable.
6. The rotor-free rim propeller based on a flux switching permanent magnet motor according to claim 1, wherein protrusions are formed on two sides of the modularized stator permanent magnet (202), grooves are formed on two sides of the modularized stator core (201), and when the modularized stator permanent magnet (202) and the modularized stator core (201) are closed along the circumference, the protrusions of the modularized permanent magnet (202) are embedded into the grooves of the modularized stator core (201).
7. The rotor-free rim propeller based on the magnetic flux switching permanent magnet motor according to claim 1, wherein the stator winding (203) is a concentrated winding, is tightly wound on the magnetic flux switching permanent magnet motor stator (2) through an insulating layer, the stator insulating waterproof jacket (7) is made of a non-magnetic conductive and good heat conductive material, and extends to the outer guide tube (1) at two axial ends of the magnetic flux switching permanent magnet motor stator (2) and is tightly attached to the end part of the stator winding (203).
8. The rotor-free shaft-type rim propeller based on the magnetic flux switching type permanent magnet motor according to claim 1, wherein the outer cover of the embedded blade (4) is provided with a groove, the yoke of the rotor (3) of the magnetic flux switching type permanent magnet motor is internally provided with a bulge, and the bulge of the rotor (3) of the magnetic flux switching type permanent magnet motor is embedded into the groove of the embedded blade (4).
9. A rotor-shaft-type rim propeller based on a flux switching permanent magnet machine according to claim 1, characterized in that the rotor cover plate (5) is slotted with fluid flow channels for cooling the flux switching permanent magnet machine rotor (3).
10. A rotor-less shaft-type rim propeller based on a flux switching permanent magnet machine according to claim 1, characterized in that the water lubricated thrust bearing (6) connects the rotor cover plate (5) and the external conduit (1), supports the flux switching permanent magnet machine rotor (3) and the embedded blades (4), and transmits radial forward thrust and radial backward thrust.
CN202310329958.4A 2023-03-30 2023-03-30 Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor Pending CN116111750A (en)

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CN202310329958.4A CN116111750A (en) 2023-03-30 2023-03-30 Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor

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Application Number Priority Date Filing Date Title
CN202310329958.4A CN116111750A (en) 2023-03-30 2023-03-30 Pitch-free shaft type rim propeller based on magnetic flux switching type permanent magnet motor

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CN116111750A true CN116111750A (en) 2023-05-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117375347A (en) * 2023-11-16 2024-01-09 西安昱辉千星航空科技有限公司 Axial flux counter-rotating motor, coaxial propulsion device and aircraft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117375347A (en) * 2023-11-16 2024-01-09 西安昱辉千星航空科技有限公司 Axial flux counter-rotating motor, coaxial propulsion device and aircraft

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