CN216122158U

CN216122158U - Same-slot double-winding redundant permanent magnet synchronous motor

Info

Publication number: CN216122158U
Application number: CN202121804421.1U
Authority: CN
Inventors: 任敬伟; 龚方友; 张同喜
Original assignee: 715th Research Institute of CSIC
Current assignee: 715th Research Institute of CSIC
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-03-22
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a same-slot double-winding redundant permanent magnet synchronous motor, which relates to the field of permanent magnet synchronous motors and comprises a machine shell and the like, wherein a stator core with a slot is embedded into the machine shell and fixed, a first winding and a second winding are fixed along the slot of the stator core by wiring, and the second winding is wound on the periphery of the first winding; the insulating material is laid between the first winding and the second winding to enable the first winding and the second winding to be relatively insulated; the outgoing line of the first winding is electrically connected with the first connector, and the outgoing line of the second winding is electrically connected with the second connector; a rotary transformer is arranged in the end cover, one end of the rotating shaft is connected with the rotary transformer, and the other end of the rotating shaft penetrates out of the shell from one side of the shell far away from the end cover; the rotor yoke is fastened on the rotating shaft, and magnetic steel is sleeved on the periphery of the rotor yoke. The utility model has the beneficial effects that: by adopting the same-slot double windings, the high reliability of the motor under the redundant backup is effectively improved under the condition that the motor has the advantage of high power density, and the single motor can realize independent operation.

Description

Same-slot double-winding redundant permanent magnet synchronous motor

Technical Field

The utility model relates to the field of permanent magnet synchronous motors, in particular to a same-slot double-winding redundant permanent magnet synchronous motor.

Background

The aviation hoisting sonar is a main anti-diving detection device of a naval anti-diving helicopter, and a collecting and releasing system arranged on the helicopter is a key factor for ensuring that sonar equipment is safely released for target detection and is normally recovered after a task is finished, and is used as a decisive link for realizing a detection task by the sonar equipment, so that the requirement on the collecting and releasing system is very strict. The motor is used as a power unit of the retraction system, is a necessary condition for realizing functions of the retraction system, has strict requirements on the reliability of the motor, and has strict requirements on the weight of equipment as aviation equipment, so the motor used as a power mechanism of the retraction system has high power density and high reliability.

The device with special requirements on reliability is characterized in that a power system often has redundancy design requirements, the backup function of a power mechanism of the system is realized through the redundancy design of the power system, a typical backup mode of a driving mechanism is adopted, independent double-motor driving is shown in an attached figure 1, and a double-motor independent backup driving system has certain requirements on space and weight.

In some fields (such as aviation and aerospace), the overall weight, volume and reliability of equipment have specific requirements, and in order to meet the overall performance index of a system and the requirements of weight and volume, redundant equipment is required at the same time, a typical dual-motor independent backup driving mode cannot adapt to a special environment.

In order to meet the requirements of high power density and high reliability in special environments, people design a double-motor mode of a semi-circumference independent winding under the same winding and motor, as shown in fig. 1, the double-motor mode has the characteristics of high power density, small size and light weight, and can meet the requirement of high power density in specific environments, but under the condition that a single-side motor is damaged, the motor on the other side cannot independently and normally work with large torque, and large jitter can be generated in the working process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a same-slot double-winding redundancy permanent magnet synchronous motor, so that the redundancy backup function of the motor is improved and the reliability requirement in the design of the motor is met under the condition that the motor meets the requirements of high power density, small volume and light weight.

The purpose of the utility model is achieved by the following technical scheme: the same-slot double-winding redundant permanent magnet synchronous motor comprises a machine shell, a stator core, a first winding, a second winding, an insulating material, a rotating shaft, a rotor yoke, magnetic steel, a rotary transformer and an end cover, wherein the stator core with a slot is embedded into the machine shell and fixed, the first winding is fixed along the slot routing of the stator core, the second winding is also fixed along the slot routing of the stator core, and the second winding is wound on the periphery of the first winding; the insulating material is laid between the first winding and the second winding to insulate the first winding relative to the second winding; the outgoing line of the first winding is electrically connected with a first connector fixed on the shell to realize power supply input, and the outgoing line of the second winding is electrically connected with a second connector fixed on the shell to realize power supply input; an end cover fixed on the machine shell is internally provided with a rotary transformer mounting groove for placing a rotary transformer, and an outgoing line of the rotary transformer is electrically connected with a rotary transformation connector fixed on the machine shell to realize power supply input; one end of the rotating shaft is connected with the rotary transformer, and the other end of the rotating shaft penetrates out of the shell from one side of the shell, which is far away from the end cover; the rotor yoke is fastened on the rotating shaft, and magnetic steel is sleeved on the periphery of the rotor yoke.

As a further technical solution, one end of the rotating shaft connected with the rotary transformer is supported on the end cover through a bearing a.

As a further technical scheme, one end of the rotating shaft, which penetrates out of the shell, is supported on the shell through a bearing B, a groove is formed in the position, close to the bearing B, of the shell, and a bearing cover is fixed in the groove in a threaded mode and used for pressing the bearing B tightly.

As a further technical scheme, a plurality of groups of magnetic steel protection materials are arranged between the periphery of the magnetic steel and the stator core, and gaps are arranged between the magnetic steel and the magnetic steel protection materials.

As a further technical scheme, a rotary transformer gland is fixed on one side of the end cover close to the rotary transformer through threads.

As a further technical scheme, the end cover is fixedly connected with the shell through inner hexagon screws in a threaded mode, and a sealing ring is arranged between the end cover and the shell.

The utility model has the beneficial effects that: by adopting the same-slot double windings, the high reliability of the motor under the redundant backup is effectively improved under the condition that the motor has the advantage of high power density, and the single motor can realize independent operation.

Drawings

Fig. 1 is a schematic diagram of a conventional independent dual-motor redundant driving.

Fig. 2 is a schematic view of an internal winding of a conventional motor.

Fig. 3 is a side view of the structure of the present invention.

Fig. 4 is a sectional view a-a of fig. 3.

Fig. 5 is a top view of the structure of the present invention.

Fig. 6 is a sectional view B-B of fig. 5.

Fig. 7 is a partially enlarged schematic view of the region C in fig. 6.

Description of reference numerals: the motor comprises a machine shell 1, a stator core 2, a groove 2-1, a first winding 3, a second winding 4, an insulating material 5, a rotating shaft 6, a rotor yoke 7, magnetic steel 8, a magnetic steel protective material 9, a rotary transformer 10, a rotary transformer gland 11, an end cover 12, a bearing cover 13, a hexagon socket head cap screw 14, a first connector 15, a second connector 16, a rotary transformer connector 17, a bearing A18, a bearing B19, a groove 20 and a sealing ring 21.

Detailed Description

The utility model will be described in detail below with reference to the following drawings:

example (b): as shown in fig. 3 to 7, the same-slot double-winding redundant permanent magnet synchronous motor comprises a machine shell 1, a stator core 2, a first winding 3, a second winding 4, an insulating material 5, a rotating shaft 6, a rotor yoke 7, magnetic steel 8, a rotary transformer 10 and an end cover 12, wherein the stator core 2 with a slot 2-1 is embedded into the machine shell 1 and fixed, the first winding 3 is fixed along the slot 2-1 of the stator core 2 by routing, the second winding 4 is also fixed along the slot 2-1 of the stator core 2 by routing, and the second winding 4 is wound on the periphery of the first winding 3; as shown in fig. 6 and 7, the insulating material 5 is laid between the first winding 3 and the second winding 4 to insulate the first winding 3 from the second winding 4; the outgoing line of the first winding 3 is electrically connected with a first connector 15 fixed on the machine shell 1 to realize power supply input, and the outgoing line of the second winding 4 is electrically connected with a second connector 16 fixed on the machine shell 1 to realize power supply input; a rotary transformer mounting groove is formed in an end cover 12 fixed on the machine shell 1 and used for placing a rotary transformer 10, and an outgoing line of the rotary transformer 10 is electrically connected with a rotary transformation connector 17 fixed on the machine shell 1 to realize power supply input; one end of the rotating shaft 6 is connected with the rotary transformer 10, and the other end of the rotating shaft 6 penetrates out of the casing 1 from one side of the casing 1 far away from the end cover 12; the rotor yoke 7 is fastened on the rotating shaft 6, and the periphery of the rotor yoke 7 is sleeved with magnetic steel 8.

Referring to fig. 4, one end of the rotary shaft 6 connected to the resolver 10 is supported on the end cap 12 through a bearing a 18; one end of the rotating shaft 6 penetrating through the machine shell 1 is supported on the machine shell 1 through a bearing B19, a groove 20 is formed in the position, close to the bearing B19, of the machine shell 1, and a bearing cover 13 is fixed in the groove 20 in a threaded mode and used for pressing the bearing B19. A plurality of groups of magnetic steel protective materials 9 are arranged between the periphery of the magnetic steel 8 and the stator core 2, and a gap is arranged between the magnetic steel 8 and the magnetic steel protective materials 9. A rotary transformer gland 11 is fixed on one side of the end cover 12 close to the rotary transformer 10 through threads. The end cover 12 is fixedly connected with the machine shell 1 through the thread of the hexagon socket head cap screw 14, and a sealing ring 21 is arranged between the end cover 12 and the machine shell 1.

The working process of the utility model is as follows: according to the utility model, 2 sets of independent windings (a first winding 3 and a second winding 4) are wound on a groove 2-1 of the same stator core 2, as shown in figures 4, 6 and 7, and the first winding 3 and the second winding 4 are ensured to be relatively insulated by laying an insulating material 5, so that mutual noninterference in operation is ensured; the outgoing line of the first winding 3 is independently connected with external control equipment through a first connector 15 to realize independent power supply control, and meanwhile, the outgoing line of the second winding 4 is also independently connected with the external control equipment through a second connector 16 to realize independent power supply control; two sets of windings are built in one motor and are mutually backed up, so that the redundant work of double motors in a normal mode is ensured, and after the single motor fails, the independent motor (winding) on the normal side has the working capacity of the single motor.

It should be understood that equivalent alterations and modifications of the technical solution and the inventive concept of the present invention by those skilled in the art should fall within the scope of the appended claims.

Claims

1. The utility model provides a redundant permanent-magnet synchronous motor of same groove duplex winding which characterized in that: the winding machine comprises a machine shell (1), a stator core (2), a first winding (3), a second winding (4), an insulating material (5), a rotating shaft (6), a rotor yoke (7), magnetic steel (8), a rotary transformer (10) and an end cover (12), wherein the stator core (2) with a groove (2-1) is embedded into the machine shell (1) and fixed, the first winding (3) is fixed along the groove (2-1) of the stator core (2) in a wiring way, the second winding (4) is also fixed along the groove (2-1) of the stator core (2) in a wiring way, and the second winding (4) is wound on the periphery of the first winding (3); the insulating material (5) is laid between the first winding (3) and the second winding (4) to insulate the first winding (3) relative to the second winding (4); the outgoing line of the first winding (3) is electrically connected with a first connector (15) fixed on the machine shell (1) to realize power supply input, and the outgoing line of the second winding (4) is electrically connected with a second connector (16) fixed on the machine shell (1) to realize power supply input; a rotary transformer mounting groove is formed in an end cover (12) fixed on the machine shell (1) and used for placing a rotary transformer (10), and an outgoing line of the rotary transformer (10) is electrically connected with a rotary transformation connector (17) fixed on the machine shell (1) to realize power supply input; one end of the rotating shaft (6) is connected with the rotary transformer (10), and the other end of the rotating shaft (6) penetrates out of the shell (1) from one side of the shell (1) far away from the end cover (12); the rotor yoke (7) is fastened on the rotating shaft (6), and the periphery of the rotor yoke (7) is sleeved with magnetic steel (8).

2. The same-slot double-winding redundant permanent magnet synchronous motor according to claim 1, characterized in that: one end of the rotating shaft (6) connected with the rotary transformer (10) is supported on the end cover (12) through a bearing A (18).

3. The same-slot double-winding redundant permanent magnet synchronous motor according to claim 1, characterized in that: one end of the rotating shaft (6) penetrating through the machine shell (1) is supported on the machine shell (1) through a bearing B (19), a groove (20) is formed in the position, close to the bearing B (19), of the machine shell (1), and a bearing cover (13) is fixed in the groove (20) in a threaded mode and used for pressing the bearing B (19).

4. The same-slot double-winding redundant permanent magnet synchronous motor according to claim 1, characterized in that: a plurality of groups of magnetic steel protection materials (9) are arranged between the periphery of the magnetic steel (8) and the stator core (2), and a gap is arranged between the magnetic steel (8) and the magnetic steel protection materials (9).

5. The same-slot double-winding redundant permanent magnet synchronous motor according to claim 1, characterized in that: and a rotary transformer gland (11) is fixed on one side of the end cover (12) close to the rotary transformer (10) through threads.

6. The same-slot double-winding redundant permanent magnet synchronous motor according to claim 1, characterized in that: the end cover (12) is fixedly connected with the machine shell (1) through threads, and a sealing ring (21) is arranged between the end cover (12) and the machine shell (1).