Dual-redundancy permanent magnet synchronous motor based on dual-redundancy brushless rotary transformer

Abstract

The invention discloses a dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer. The dual-redundancy permanent magnet synchronous motor comprises a synchronous motor body and a rotary transformer. The motor body adopts an armature duplex winding with double windings, and the rotary transformer rotor component adopts a rotary transformer rotor duplex winding coil with double windings and an annular transformer rotor duplex winding; the rotary transformer stator component adopts a rotary transformer stator duplex winding with double windings and an annular transformer stator duplex winding, that is, the synchronous motor body and the rotary transformer of the dual-redundancy permanent magnet synchronous motor both adopt a structure with double windings. When any one of the armature duplex winding, the rotary transformer rotor duplex winding coil, the ring transformer rotor duplex winding, the rotary transformer stator duplex winding and the ring transformer stator duplex winding breaks down, the other backup winding can continue to work, and the reliability of the duplex winding motor is two times that of a single winding motor. Therefore, the reliability of the permanent magnet synchronous motor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of micro motors, and in particular to a dual-redundant permanent magnet synchronous motor based on a dual-redundant brushless rotary transformer. Background Art

[0002] Traditional motors have only one set of windings. When a short circuit, phase loss or other fault occurs in the motor windings, the motor will stop working and affect the entire system.

[0003] With the continuous development of science and technology, especially in aviation and aerospace products, the reliability of traditional motors can no longer meet the requirements of use in some transmission parts with high reliability requirements, resulting in a high failure rate of aviation and aerospace products. Summary of the invention

[0004] The embodiment of the present application provides a dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer, which can solve the technical problem that the motor in the prior art has low reliability and cannot meet the use requirements of aviation and aerospace products. The technical solution is as follows:

[0005] A dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer comprises: a synchronous motor body, comprising a front support plate and a rear support plate arranged opposite to each other, a synchronous motor stator component fixedly connected between the front support plate and the rear support plate, and a synchronous motor rotor component rotatably arranged in the synchronous motor stator component, wherein the synchronous motor rotor component has a rotor shaft;

[0006] A rotary transformer, comprising a rotary transformer stator component and a rotary transformer rotor component disposed in the rotary transformer, wherein the rotary transformer stator component is fixedly connected to the outer side surface of the rear support plate, and the rotary transformer rotor component is fixedly connected to the rotor shaft;

[0007] Among them, the synchronous motor stator component includes an armature double winding; the rotary transformer rotor component includes a rotary transformer rotor double winding coil and a toroidal transformer rotor double winding; the rotary transformer stator component includes a rotary transformer stator double winding and a toroidal transformer stator double winding.

[0008] Optionally, the synchronous motor stator component also includes a casing and a synchronous motor armature core, the armature double winding is embedded in the synchronous motor armature core, and the synchronous motor armature core is fixedly connected to the casing; the synchronous motor rotor component and the synchronous motor stator component are connected between the front support plate and the rear support plate by a first screw.

[0009] Optionally, the synchronous motor rotor component also includes a rotor shaft, a rotor punching assembly, a permanent magnet and a protective cover, the rotor punching assembly is fixedly connected to the rotor shaft, the permanent magnet is fixedly connected to the rotor punching assembly, and the protective cover is disposed outside the permanent magnet.

[0010] Optionally, the rotating transformer rotor component also includes a rotor sleeve, a rotating transformer rotor armature core and a toroidal transformer rotor core; the rotating transformer rotor armature core is fixedly connected to the rotor sleeve, the toroidal transformer rotor core is wound with the toroidal transformer rotor double winding, and the toroidal transformer rotor core and the toroidal transformer rotor double winding are both fixedly connected to the rotor shaft.

[0011] Optionally, the rotating transformer stator component also includes a rotating transformer stator housing, a rotating transformer stator armature core, a toroidal transformer stator core and a toroidal transformer stator cover; the rotating transformer stator double winding is embedded in the rotating transformer stator armature core, and the rotating transformer stator armature core is fixedly connected to the rotating transformer stator housing; the toroidal transformer stator double winding is fixedly connected to the toroidal transformer stator core, the toroidal transformer stator cover is fixedly connected to the toroidal transformer stator core, and the rotating transformer stator housing is fixedly connected to the rear support plate via a second screw.

[0012] Optionally, the armature double winding adopts a fractional slot winding, and the armature double winding has two sets of coils, which are simultaneously placed in the fractional slots of the armature core of the synchronous motor.

[0013] Optionally, the rotary transformer rotor double winding coil package is a concentric winding type, including a rotary transformer rotor inner coil layer and a rotary transformer rotor outer coil layer arranged sequentially from the inside to the outside; the rotary transformer stator double winding is a concentric winding type, including a rotary transformer stator inner coil layer and a rotary transformer stator outer coil layer arranged sequentially from the inside to the outside.

[0014] Optionally, the annular transformer rotor double winding is of annular winding type, and the annular transformer rotor double winding includes a first annular transformer inner winding group and a second annular transformer inner winding group, and the first annular transformer inner winding group and the second annular transformer inner winding group are axially stacked.

[0015] Optionally, the two toroidal transformer stator double windings are of toroidal winding type, and the toroidal transformer stator double windings include a first toroidal transformer outer winding group and a second toroidal transformer outer winding group, and the first toroidal transformer outer winding group and the second toroidal transformer outer winding group are axially stacked.

[0016] Optionally, a front bearing and a rear bearing are arranged between the rotor shaft and the armature core of the synchronous motor, and the coaxiality between the rotor shaft and the armature core of the synchronous motor is ≤φ0.04mm.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0018] A dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer comprises: a synchronous motor body and a rotary transformer. The motor body adopts an armature double winding with double windings, and the rotary transformer rotor component adopts a rotary transformer rotor double winding coil with double windings and a toroidal transformer rotor double windings; the rotary transformer stator component adopts a rotary transformer stator double winding with double windings and a toroidal transformer stator double windings, that is, the synchronous motor body and the rotary transformer of the dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer in the embodiment of the present application both adopt a structure with double windings. When any of the armature double windings, the rotary transformer rotor double winding coil, the toroidal transformer rotor double windings, the rotary transformer stator double windings, and the toroidal transformer stator double windings fails, the other backup winding can continue to work, and the reliability of the double-winding motor is twice that of the single-winding motor, thereby improving the reliability of the permanent magnet synchronous motor.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a cross-sectional view of a dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer provided in an embodiment of the present application in a disassembled state;

[0022] Figure 2 It is a cross-sectional view of a dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer provided in an embodiment of the present application in a combined state;

[0023] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0024] Description of Reference Numerals

[0025] 1- synchronous motor body; 11- front support plate; 12- rear support plate;

[0026] 13- synchronous motor stator component; 131- armature double winding; 132- housing; 133- synchronous motor armature core;

[0027] 14- synchronous motor rotor component; 141- rotor shaft; 142- rotor punching assembly; 143- permanent magnet; 144- protective cover;

[0028] 2-rotating transformer; 21-rotating transformer stator component; 211-rotating transformer stator double winding; 2111-rotating transformer stator inner coil layer; 2112-rotating transformer stator outer coil layer; 212-toroidal transformer stator double winding; 2121-first toroidal transformer outer winding group; 2122-second toroidal transformer outer winding group; 213-rotating transformer stator housing; 214-rotating transformer stator armature core; 215-toroidal transformer stator core; 216-toroidal transformer stator cover;

[0029] 22-rotor components of rotary transformer; 221-rotor double winding coil package of rotary transformer rotor; 2211-rotor inner coil layer; 2212-rotor outer coil layer; 222-rotor double winding of toroidal transformer rotor; 2221-first toroidal transformer inner winding group; 2222-second toroidal transformer inner winding group; 223-rotor sleeve; 224-rotor armature core of rotary transformer rotor; 225-rotor core of toroidal transformer rotor;

[0030] 3-front bearing; 4-rear bearing; 5-first screw; 6-second screw. DETAILED DESCRIPTION

[0031] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0032] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the "upper" and "lower" of the corresponding parts in the use state relative to the direction of gravity, and "inside" and "outside" refer to the "inside" and "outside" relative to the corresponding parts' own contours. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements.

[0033] According to the embodiments of the present application, reference Figures 1 to 3 , provides a dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer, including: a synchronous motor body 1 and a rotary transformer 2.

[0034] Among them, the synchronous motor body 1 includes a front support plate 11 and a rear support plate 12 that are relatively arranged, a synchronous motor stator component 13 fixedly connected between the front support plate 11 and the rear support plate 12, and a synchronous motor rotor component 14 rotatably arranged in the synchronous motor stator component 13, and the synchronous motor rotor component 14 has a rotor shaft 141.

[0035] The resolver 2 includes a resolver stator component 21 and a resolver rotor component 22 disposed inside the resolver 2 , wherein the resolver stator component 21 is fixedly connected to the outer side surface of the rear support plate 12 , and the resolver rotor component 22 is fixedly connected to the rotor shaft 141 .

[0036] In the above embodiment, the dual-redundancy permanent magnet synchronous motor based on the dual-redundancy brushless rotary transformer is a brushless structure and belongs to a brushless motor. The synchronous motor body 1 is used to output rotational motion, and the rotary transformer 2 is used to detect the speed and position of the rotor shaft 141 and supply power to the synchronous motor body 1.

[0037] In the embodiment of the present application, the synchronous motor stator component 13 includes an armature double winding 131; the rotary transformer rotor component 22 includes a rotary transformer rotor double winding coil 221 and a toroidal transformer rotor double winding 222; the rotary transformer stator component 21 includes a rotary transformer stator double winding 211 and a toroidal transformer stator double winding 212.

[0038] In the above embodiment, the synchronous motor body 1 adopts an armature double winding 131 with double windings, and the rotary transformer rotor component 22 adopts a rotary transformer rotor double winding coil 221 with double windings and a toroidal transformer rotor double winding 222; the rotary transformer stator component 21 adopts a rotary transformer stator double winding 211 with double windings and a toroidal transformer stator double winding 212, that is, the synchronous motor body 1 and the rotary transformer 2 of the double redundancy permanent magnet synchronous motor based on the double redundancy brushless rotary transformer in the embodiment of the present application both adopt a structure with double windings. Therefore, when any of the armature double winding 131, the rotary transformer rotor double winding coil 221, the toroidal transformer rotor double winding 222, the rotary transformer stator double winding 211, and the toroidal transformer stator double winding 212 fails, the other backup winding can continue to work, and the reliability of the double winding motor is twice that of the single winding motor, thereby improving the reliability of the permanent magnet synchronous motor.

[0039] According to the embodiments of the present application, reference Figure 3As shown, the synchronous motor stator component 13 also includes a casing 132 and a synchronous motor armature core 133, the armature double winding 131 is embedded in the synchronous motor armature core 133, and the synchronous motor armature core 133 is fixedly connected to the casing 132; the synchronous motor rotor component 14 and the synchronous motor stator component 13 are connected between the front support plate 11 and the rear support plate 12 by a first screw 5.

[0040] According to the embodiments of the present application, reference Figure 3 As shown, the synchronous motor rotor component 14 also includes a rotor shaft 141, a rotor punching assembly 142, a permanent magnet 143 and a protective cover 144. The rotor punching assembly 142 is fixedly connected to the rotor shaft 141, the permanent magnet 143 is fixedly connected to the rotor punching assembly 142, and the protective cover 144 is sleeved outside the permanent magnet 143.

[0041] According to the embodiments of the present application, reference Figure 3 As shown, the rotary transformer rotor component 22 also includes a rotor shaft 141 sleeve, a rotary transformer rotor armature core 224 and a toroidal transformer rotor core 225; the rotary transformer rotor armature core 224 is fixedly connected to the rotor shaft 141 sleeve, and the toroidal transformer rotor double winding 222 is wound on the toroidal transformer rotor core 225. The toroidal transformer rotor core 225 and the toroidal transformer rotor double winding 222 are both fixedly connected to the rotor shaft 141.

[0042] According to the embodiments of the present application, reference Figure 1 and Figure 2 As shown, the rotary transformer stator component 21 also includes a rotary transformer stator housing 213, a rotary transformer stator armature core 214, a toroidal transformer stator core 215 and a toroidal transformer stator cover 216; the rotary transformer stator double winding 211 is embedded in the rotary transformer stator armature core 214, and the rotary transformer stator armature core 214 is fixedly connected to the rotary transformer stator housing 213.

[0043] The toroidal transformer stator double winding 212 is fixedly connected to the toroidal transformer stator core 215 , the toroidal transformer stator cover 216 is fixedly connected to the toroidal transformer stator core 215 , and the rotary transformer stator housing 213 is fixedly connected to the rear support plate 12 via a second screw 6 .

[0044] According to the embodiments of the present application, reference Figure 1 and Figure 2 As shown, the armature double winding 131 adopts a fractional slot winding, and the armature double winding 131 has two sets of coils, which are simultaneously placed in the fractional slots of the synchronous motor armature core 133.

[0045] According to the embodiments of the present application, reference Figure 3 As shown, the rotary transformer rotor double winding coil package 221 is a concentric winding type, including a rotary transformer rotor inner coil layer 2211 and a rotary transformer rotor outer coil layer 2212 arranged sequentially from the inside to the outside; the rotary transformer stator double winding 211 is a concentric winding type, including a rotary transformer stator inner coil layer 2111 and a rotary transformer stator outer coil layer 2112 arranged sequentially from the inside to the outside.

[0046] According to the embodiments of the present application, reference Figure 3 As shown, the annular transformer rotor double winding 222 is of annular winding type, and the annular transformer rotor double winding 222 includes a first annular transformer inner winding group 2221 and a second annular transformer inner winding group 2222, and the first annular transformer inner winding group 2221 and the second annular transformer inner winding group 2222 are axially stacked.

[0047] According to the embodiments of the present application, reference Figure 3 As shown, the two toroidal transformer stator double windings 212 are of toroidal winding type, and the toroidal transformer stator double windings 212 include a first toroidal transformer outer winding group 2121 and a second toroidal transformer outer winding group 2122, and the first toroidal transformer outer winding group 2121 and the second toroidal transformer outer winding group 2122 are axially stacked.

[0048] According to the embodiments of the present application, reference Figure 3 As shown, in order to further improve the reliability of the dual-redundancy permanent magnet synchronous motor, a front bearing 3 and a rear bearing 4 are provided between the rotor shaft 141 and the synchronous motor armature core 133, and the coaxiality between the rotor shaft 141 and the synchronous motor armature core 133 is ≤φ0.04mm.

[0049] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0051] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer, characterized in that: include: A synchronous motor body (1) comprises a front support plate (11) and a rear support plate (12) arranged opposite to each other, a synchronous motor stator component (13) fixedly connected between the front support plate (11) and the rear support plate (12), and a synchronous motor rotor component (14) rotatably arranged in the synchronous motor stator component (13), wherein the synchronous motor rotor component (14) has a rotor shaft (141); A rotary transformer (2), comprising a rotary transformer stator component (21) and a rotary transformer rotor component (22) disposed in the rotary transformer (2), wherein the rotary transformer stator component (21) is fixedly connected to the outer side surface of the rear support plate (12), and the rotary transformer rotor component (22) is fixedly connected to the rotor shaft (141); The synchronous motor stator component (13) comprises an armature double winding (131); the rotary transformer rotor component (22) comprises a rotary transformer rotor double winding coil (221) and a toroidal transformer rotor double winding (222); and the rotary transformer stator component (21) comprises a rotary transformer stator double winding (211) and a toroidal transformer stator double winding (212).

2. The dual-redundancy permanent magnet synchronous motor based on the dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The synchronous motor stator component (13) further comprises a housing (132) and a synchronous motor armature core (133), the armature double winding (131) is embedded in the synchronous motor armature core (133), and the synchronous motor armature core (133) is fixedly connected to the housing (132); The synchronous motor rotor component (14) and the synchronous motor stator component (13) are connected between a front support plate (11) and a rear support plate (12) via a first screw (5).

3. The dual-redundancy permanent magnet synchronous motor based on the dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The synchronous motor rotor component (14) further comprises a rotor shaft (141), a rotor punching assembly (142), a permanent magnet (143) and a protective sleeve (144); the rotor punching assembly (142) is fixedly connected to the rotor shaft (141), the permanent magnet (143) is fixedly connected to the rotor punching assembly (142), and the protective sleeve (144) is sleeved outside the permanent magnet (143).

4. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The rotary transformer rotor component (22) further comprises a rotor sleeve (223), a rotary transformer rotor armature core (224) and an annular transformer rotor core (225); the rotary transformer rotor armature core (224) is fixedly connected to the rotor sleeve (223), the annular transformer rotor core (225) is wound with the annular transformer rotor double winding (222), and the annular transformer rotor core (225) and the annular transformer rotor double winding (222) are both fixedly connected to the rotor shaft (141).

5. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The rotary transformer stator component (21) also includes a rotary transformer stator housing (213), a rotary transformer stator armature core (214), a toroidal transformer stator core (215) and a toroidal transformer stator cover plate (216); The rotary transformer stator double winding (211) is embedded in a rotary transformer stator armature core (214), and the rotary transformer stator armature core (214) is fixedly connected to the rotary transformer stator housing (213); The toroidal transformer stator double winding (212) is fixedly connected to the toroidal transformer stator core (215), the toroidal transformer stator cover plate (216) is fixedly connected to the toroidal transformer stator core (215), and the rotary transformer stator housing (213) is fixedly connected to the rear support plate (12) via a second screw (6).

6. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 2, characterized in that: The armature double winding (131) adopts a fractional slot winding, and the armature double winding (131) has two sets of coils, which are simultaneously placed in the fractional slots of the synchronous motor armature core (133).

7. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The rotary transformer rotor double winding coil package (221) is of a concentric winding type, comprising a rotary transformer rotor inner coil layer (2211) and a rotary transformer rotor outer coil layer (2212) arranged in sequence from the inside to the outside; The rotary transformer stator double winding (211) is a concentric winding type, comprising a rotary transformer stator inner coil layer (2111) and a rotary transformer stator outer coil layer (2112) arranged in sequence from the inside to the outside.

8. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 1, characterized in that: The annular transformer rotor double winding (222) is of an annular winding type, and comprises a first annular transformer inner winding group (2221) and a second annular transformer inner winding group (2222), wherein the first annular transformer inner winding group (2221) and the second annular transformer inner winding group (2222) are axially stacked.

9. The dual-redundancy permanent magnet synchronous motor according to claim 1, characterized in that: The two annular transformer stator double windings (212) are of annular winding type, and the annular transformer stator double windings (212) include a first annular transformer outer winding group (2121) and a second annular transformer outer winding group (2122), and the first annular transformer outer winding group (2121) and the second annular transformer outer winding group (2122) are axially stacked.

10. The dual-redundancy permanent magnet synchronous motor based on a dual-redundancy brushless rotary transformer according to claim 2, characterized in that: A front bearing (3) and a rear bearing (4) are provided between the rotor shaft (141) and the synchronous motor armature core (133), and the coaxiality of the rotor shaft (141) and the synchronous motor armature core (133) is ≤φ0.04 mm.

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