Double-sensor detection structure for rotor, switched reluctance motor for electric locomotive and electric locomotive

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a double-sensor detection structure for a rotor and a switched reluctance motor for an electric locomotive. The device comprises a first rotor which is provided with a plurality of first salient poles in the circumferential direction so as to install a winding; and the monitoring assembly is provided with a plurality of monitoring stations so as to monitor the winding position of the first salient pole. The monitoring assembly is arranged on one side of the rotor to monitor the position of the rotor in real time, and when the motor stops and the rotor just rotates to the dead point position, the monitoring assembly feeds back the position information of the rotor, so that an operator or a motor system can adjust the position of the rotor conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and in particular relates to a rotor dual-sensor detection structure and its switched reluctance motor for electric locomotives and electric locomotives. Background Technology

[0002] In related technologies, when the rotor inside the motor is at its dead point, the motor cannot start normally after power is applied.

[0003] Therefore, there is an urgent need to design a dual-sensor detection structure for rotors and a switched reluctance motor and locomotive for locomotives, in order to avoid the technical problem that the rotor of the switched reluctance motor for locomotives rotates to the dead position after the locomotive stops and cannot start normally.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] This disclosure provides at least one dual-sensor detection structure for rotors, a switched reluctance motor for electric locomotives, and an electric locomotive.

[0006] In a first aspect, embodiments of this disclosure provide a dual-sensor detection structure for a rotor, comprising: a first rotor having a plurality of first salient poles arranged circumferentially for mounting windings;

[0007] The monitoring component has several monitoring stations to monitor the winding position of the first salient pole.

[0008] In one alternative embodiment, the monitoring component includes a light shield and an optical sensor, with the light shield disposed between the first rotor and the optical sensor;

[0009] The monitoring stations are evenly distributed along the circumference of the light shield.

[0010] In one optional embodiment, the light shield is provided with a plurality of light-shielding blocks at circumferential intervals, and the gap between two adjacent light-shielding blocks forms a monitoring station.

[0011] In one optional embodiment, the rotor dual-sensor detection structure further includes a second rotor, and the second rotor is provided with a plurality of second salient poles in the circumferential direction for mounting windings.

[0012] A monitoring component is also installed on one side of the second rotor to monitor the winding position of the second salient pole;

[0013] The first salient pole and the second salient pole are misaligned.

[0014] In one optional embodiment, a flexible block is also installed on the end of the light-shielding block away from the light-shielding cover;

[0015] The flexible block extends radially inward along the light shield.

[0016] Secondly, embodiments of this disclosure provide a dual-sensor detection structure for a rotor, comprising:

[0017] A first rotor and a second rotor are coaxially arranged. The first rotor has a plurality of first salient poles arranged circumferentially, and the second rotor has a plurality of second salient poles arranged circumferentially, so as to install windings respectively.

[0018] Two monitoring components are installed on opposite sides of the first rotor and the second rotor, respectively, to monitor the winding positions of the first salient pole and the second salient pole.

[0019] In one optional implementation, the monitoring components include a light shield and an optical sensor, and the monitoring stations are evenly distributed along the circumference of the light shield.

[0020] The optical sensor corresponds to the monitoring station;

[0021] The light shield is provided with several light-shielding blocks at circumferential intervals, and the gap between two adjacent light-shielding blocks forms a monitoring station.

[0022] In one optional embodiment, a flexible block is also installed on the end of the light-shielding block away from the light-shielding cover;

[0023] The flexible block extends radially inward along the light shield.

[0024] Thirdly, this disclosure also provides a switched reluctance motor for electric locomotives, including the dual-sensor detection structure for the rotor as described above.

[0025] Fourthly, this disclosure also provides an electric locomotive that uses a switched reluctance motor as described above.

[0026] The beneficial effect of this utility model is that by setting a monitoring component on one side of the rotor to monitor the rotor position in real time, when the rotor just rotates to the dead point position when the motor stops, the monitoring component feeds back the rotor position information, so that the operator or motor system can adjust the rotor position.

[0027] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A perspective view of a dual-sensor detection structure for a rotor provided in an embodiment of this disclosure;

[0031] Figure 2 This is a front view of a dual-sensor detection structure for a rotor provided in an embodiment of this disclosure;

[0032] Figure 3 A cross-sectional view of a dual-sensor detection structure for a rotor provided in an embodiment of this disclosure;

[0033] Figure 4 This is a schematic diagram of the structure of a monitoring component provided in an embodiment of this disclosure.

[0034] In the picture:

[0035] 1. First rotor; 11. First salient pole;

[0036] 2. Monitoring components; 21. Light shield; 22. Optical sensor; 23. Light shield block; 24. Flexible block;

[0037] 3. Monitoring station;

[0038] 4. Second rotor; 41. Second salient pole. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] Research has shown that when the rotor inside the motor is at its dead point, the motor cannot start normally after power is applied.

[0041] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0042] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] Based on the above research, and referring to Figure 1 This disclosure provides a dual-sensor detection structure for a rotor, including a first rotor 1 and a second rotor 4, and two monitoring components 2 respectively installed on opposite sides of the first rotor 1 and the second rotor 4. The ends of the first rotor 1 and the second rotor 4 are coaxially fitted together. The first rotor 1 is uniformly provided with a plurality of first salient poles 11 in the circumferential direction, and the second rotor 4 is uniformly provided with a plurality of second salient poles 41 in the circumferential direction. The first salient poles 11 and the second salient poles 41 are adapted to be respectively mounted with windings.

[0045] Reference Figure 1 and Figure 2 In some embodiments, in order to avoid the situation in the existing single rotor structure where the rotor may rotate to the starting torque dead point when it stops, the first salient pole 11 and the second salient pole 41 are staggered to make the winding distribution on the first salient pole 11 and the second salient pole 41 more uniform, thereby greatly reducing the range of torque dead points and reducing the probability of the rotor falling at the dead point when it stops.

[0046] The monitoring component 2 is circumferentially provided with several monitoring stations 3. The monitoring stations 3 of the two monitoring components 2 correspond to the positions of the first salient pole 11 and the second salient pole 41, respectively, so that the two monitoring components 2 can monitor the position information of the windings on the first salient pole 11 and the second salient pole 41, thus preventing the first rotor 1 and the second rotor 4 from falling exactly at the dead point when they stop. Optionally, the center of the first rotor 1 and the second rotor 4 is inserted through a rotating shaft, and both monitoring components 2 are also mounted on the rotating shaft. At the same time, the two monitoring components 2 can rotate with the rotating shaft, so that the monitoring components 2 can rotate synchronously with the first rotor 1 and the second rotor 4, thereby achieving the effect of real-time monitoring of the position of the first salient pole 11 and the second salient pole 41.

[0047] Reference Figure 2In at least one embodiment, the monitoring component 2 includes a light shield 21 and an optical sensor 22. The two light shields 21 are disposed on opposite sides of the first rotor 1 and the second rotor 4, while the optical sensor 22 is installed on the side of the corresponding light shield 21 away from the first rotor 1 or the second rotor 4. The monitoring stations 3 are evenly distributed along the circumference of the light shields 21.

[0048] Reference Figure 3 In at least one embodiment, the light shield 21 is circumferentially spaced with a plurality of light-shielding blocks 23, and the gap between two adjacent light-shielding blocks 23 forms a monitoring station 3. Furthermore, the gap between two light-shielding blocks 23 is the same as the width of the light-shielding block 23. That is, after the two rotors 1 are misaligned, the monitoring stations 3 of the two light shields 21 form a continuous circumferential line, thus forming a complete circle, to achieve comprehensive monitoring of the positions of the first salient pole 11 and the second salient pole 41. Simultaneously, by misaligning and splicing the first rotor 1 and the second rotor 4, the dead point position can be minimized as much as possible.

[0049] Reference Figure 4 In some embodiments, a flexible block 24 is also installed on the end of the light-shielding block 23 away from the light-shielding cover 21, and the flexible block 24 extends radially inward along the light-shielding cover 21. Since the motor generates continuous vibration during operation, a rigid connection between the sensor 22 and the light-shielding cover 21 may loosen over time. Therefore, by providing a flexible block 24 on the light-shielding block 23, during installation, the flexible block 24 is bent upwards and deformed, and the sensor 22 is inserted into the flexible block 24. Then, the flexible block 24 rebounds under elastic force and holds the sensor 22 tightly. This flexible connection method adapts to the environment of continuous vibration and maintains the positioning of the sensor 22.

[0050] Furthermore, this disclosure also provides a switched reluctance motor for electric locomotives, including the rotor dual-sensor detection structure as shown above. The switched reluctance motor also includes a control module to receive position information of the first salient pole 11 and the second salient pole 41 monitored by the optical sensor 22, and to control the first rotor 1 and the second rotor 4 to continue rotating at a certain angle when they reach their dead points, thereby avoiding the dead points. Optionally, the control module is an STM32 processor.

[0051] This disclosure also provides an electric locomotive that uses a switched reluctance motor as described above.

[0052] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification; its technical scope must be determined by the scope of the claims.

Claims

1. A dual-sensor detection structure for a rotor, characterized in that, include: The first rotor (1) has a plurality of first salient poles (11) arranged circumferentially to mount the windings; The monitoring component (2) has several monitoring stations (3) to monitor the winding position of the first salient pole (11).

2. The rotor dual-sensor detection structure as described in claim 1, characterized in that, The monitoring component (2) includes a light shield (21) and an optical sensor (22), with the light shield (21) disposed between the first rotor (1) and the optical sensor (22); The monitoring stations (3) are evenly distributed around the circumference of the light shield (21).

3. The rotor dual-sensor detection structure as described in claim 2, characterized in that, The light shield (21) is provided with several light shielding blocks (23) at circumferential intervals, and the gap between two adjacent light shielding blocks (23) forms the monitoring station (3).

4. The dual-sensor detection structure for rotors as described in claim 1, characterized in that, The rotor dual-sensor detection structure also includes a second rotor (4), and the second rotor (4) is provided with a number of second salient poles (41) in the circumferential direction for mounting windings; A monitoring component (2) is also installed on one side of the second rotor (4) to monitor the winding position of the second salient pole (41); The first salient pole (11) and the second salient pole (41) are misaligned.

5. The dual-sensor detection structure for rotors as described in claim 2, characterized in that, A flexible block (24) is also installed on the end of the light-shielding block (23) away from the light-shielding cover (21); The flexible block (24) extends radially inward along the light shield (21).

6. A dual-sensor detection structure for a rotor, characterized in that, include: A first rotor (1) and a second rotor (4) are coaxially arranged. The first rotor (1) is provided with a plurality of first salient poles (11) in the circumferential direction, and the second rotor (4) is provided with a plurality of second salient poles (41) in the circumferential direction, so as to install windings respectively. Two monitoring components (2) are installed on opposite sides of the first rotor (1) and the second rotor (4) respectively, to monitor the winding positions of the first salient pole (11) and the second salient pole (41) respectively.

7. The rotor dual-sensor detection structure as described in claim 6, characterized in that, The monitoring component (2) includes a light shield (21) and an optical sensor (22), and the monitoring stations (3) are evenly distributed along the circumference of the light shield (21); The optical sensor (22) corresponds to the monitoring station (3); The light shield (21) is provided with several light shielding blocks (23) at circumferential intervals, and the gap between two adjacent light shielding blocks (23) forms a monitoring station (3).

8. The rotor dual-sensor detection structure as described in claim 7, characterized in that, A flexible block (24) is also installed on the end of the light-shielding block (23) away from the light-shielding cover (21); The flexible block (24) extends radially inward along the light shield (21).

9. A switched reluctance motor for electric locomotives, characterized in that, Includes the rotor dual-sensor detection structure as described in any one of claims 1-8.

10. An electric locomotive, characterized in that, Use the switched reluctance motor as described in claim 9.

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