Low torque ripple synchronous reluctance motor

Abstract

The invention provides a low torque ripple synchronous reluctance motor, comprising: a stator comprising a plurality of stator slots and a plurality of stator teeth, each stator tooth comprising a stator tooth center; each motor pole number in the rotor comprises a first rotor barrier wall to an nth rotor barrier wall; wherein a first included angle theta b is formed between the center line of the tail end of the first rotor barrier and the center line of the corresponding stator tooth part, an included angle theta n is formed between the center line of the tail end of the nth rotor barrier and the center line of the corresponding stator tooth part, the formula of the included angle theta n is [(n-1) * k + 1] * theta b, the numerical value of the real number (k) is any numerical value within the range of 2 + / -0.5, and the numerical value of the nth rotor barrier is any numerical value within the range of 2 + / -0.5. The formula of the first included angle theta b is any numerical value in the range of # imgabs0 #, and Ns is the number of the stator slots.

Description

Technical Field

[0001] The present invention relates to a motor structure, and more particularly to a synchronous reluctance motor with low torque ripple. Background Art

[0002] In the prior art, the electromagnetic torque of a synchronous reluctance motor comes from magnetic resistance, and the definition of torque ripple is an important performance indicator used to evaluate the smoothness of the output torque in a torque cycle. Since the torque of a synchronous reluctance motor comes from magnetic resistance, when the magnetic resistance, i.e., the rotor position changes, under the same stator magnetomotive force, different magnetic resistance will be generated in a closed magnetic circuit due to the change of the rotor position, that is, the line inductance of the stator coil will change significantly with the change of the rotor position.

[0003] The causes of torque ripple are described below. Figure 9a is a schematic diagram for explaining the structure in which the center of each barrier is aligned with the center of the stator tooth in the synchronous reluctance motor of the prior art; Figure 9b This is a schematic diagram for explaining the structure of aligning the center of each magnetic channel with the center of the stator tooth in the prior art synchronous reluctance motor. Figure 9a In the prior art, when the center of the stator tooth portion 9011 of the stator 901 is aligned with the center of each barrier (e.g., barrier 9031, barrier 9033, barrier 9035) of the rotor 903, as shown in FIG. Figure 9a As shown in FIG. 1 , this position is a state where the reluctance torque of the synchronous reluctance motor is relatively large. Since the reluctance of the magnetic circuit is large at this position, and the rotor 903 tends to move in the direction of small reluctance, the rotor 903 will generate a relatively large electromagnetic torque at this position. On the other hand, when the center of the stator tooth 9011 of the stator 901 is aligned with the center of each magnetic conductive channel 9037 of the rotor 903, as shown in FIG. Figure 9b As shown, since the magnetic resistance of the magnetic circuit is small at this position, it is easy to establish magnetic flux, so the rotor 903 will generate a smaller torque at this position.

[0004] Therefore, when the rotor 903 is Figure 9a Go to the location Figure 9b When the position is set, the electromagnetic torque output of the rotor 903 will be uneven, which is the main reason for the torque ripple. Excessive torque ripple will cause the synchronous reluctance motor to generate greater noise and mechanical vibration. Summary of the invention

[0005] [Problems that the invention aims to solve]

[0006] It can be seen from the above prior art that the existence of torque ripple cannot be avoided in the current synchronous reluctance motor structure. Therefore, it is necessary to provide a low torque ripple synchronous reluctance motor that can effectively reduce the torque ripple.

[0007] [Technical means to solve the problem]

[0008] A low torque ripple synchronous reluctance motor, comprising: a stator, comprising a plurality of stator slots N s and a plurality of stator teeth, each of the plurality of stator teeth including a stator tooth center; and a rotor including a plurality of motor poles, each of the plurality of motor poles including a plurality of rotor barriers, the plurality of rotor barriers including a first rotor barrier to an nth rotor barrier, the first rotor barrier including a first rotor barrier end center, the nth rotor barrier including an nth rotor barrier end center, n being a positive integer greater than 1; wherein a first rotor barrier end center line is included between the first rotor barrier end center and a center of the rotor, a stator tooth center line is included between the stator tooth center and the rotor center, and a first included angle θ is included between the first rotor barrier end center line and the corresponding stator tooth center line b , wherein the center of the nth rotor barrier end and the center of the rotor include an nth rotor barrier end center line, and the nth rotor barrier end center line and the corresponding stator tooth center line include an angle θ n , where the angle θ n The formula is θ n =[(n-1)×k+1]×θ b , the value of the real number k is any value within the range of 2±0.5, the first angle θ b The formula is Any value in the range of N s is the number of the plurality of stator slots.

[0009] Preferably, the number N of the plurality of stator slots is s There are twenty-four, and each of the plurality of motor poles includes two or three rotor barriers.

[0010] Preferably, the number N of the plurality of stator slots is s The number of rotor barriers is thirty-six, and each of the plurality of motor poles includes three or four rotor barriers.

[0011] Preferably, the number N of the plurality of stator slots is s The number of rotor barriers is forty-eight, and each of the plurality of motor poles includes four, five or six rotor barriers.

[0012] Preferably, since factors such as the stator slot opening size and the rotor air gap width vary with different load and speed conditions, in order to achieve the best output torque and ripple, the angle θ n Can include The amount of deviation.

[0013] [Effects of the invention]

[0014] From the above content, it can be seen that the present invention provides a low-torque ripple synchronous reluctance motor. The low-torque ripple synchronous reluctance motor of the present invention has the following effects and advantages: 1. The present invention finds a new first angle θ b The formula for the remaining angle θ n The formula allows users to design a low torque ripple synchronous reluctance motor based on the formula. 2. The present invention effectively uses the first angle θ b By setting the output torque corresponding to each magnetic barrier, the phase is effectively adjusted to effectively suppress the maximum and minimum values ​​of the synthetic torque, achieve the goal of peak shaving and valley filling, and provide the structure of a low-torque ripple synchronous reluctance motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] A person skilled in the art may have a better understanding of various aspects of the present invention and its specific features and advantages after reading the following detailed description with reference to the accompanying drawings, wherein the accompanying drawings include:

[0016] Figure 1 is the first angle θ of the present invention b Structural diagram of a synchronous reluctance motor when is zero.

[0017] Figure 2 is the first angle θ of the present invention b Schematic diagram of the relationship curve between electromagnetic torque and rotor position when is zero.

[0018] Figure 3 is the first angle θ of the present invention b When is zero, the output torque of each barrier and the phase and magnitude relationship curve between each output torque are shown.

[0019] Figure 4a 4 is a schematic structural diagram of a low-torque ripple synchronous reluctance motor according to an embodiment of the present invention.

[0020] Figure 4b 4 is a schematic structural diagram of a low-torque ripple synchronous reluctance motor according to an embodiment of the present invention.

[0021] Figure 5a is the torque ripple and the first angle θ of an embodiment of the present invention b Schematic diagram of the relationship curve.

[0022] Figure 5b FIG. 4 is a schematic diagram of a relationship curve between torque ripple and real number k according to an embodiment of the present invention.

[0023] Figure 6a2 is a schematic structural diagram of a low-torque ripple synchronous reluctance motor according to another embodiment of the present invention.

[0024] Figure 6b It is a schematic diagram of a curve showing the relationship between the output torque of each barrier and the phase and magnitude of each output torque in another embodiment of the present invention.

[0025] Figure 6c is the first angle θ in another embodiment of the present invention b Schematic diagram of the relationship curve between torque and pressure.

[0026] Figure 7a is the first angle θ in another embodiment of the present invention b Schematic diagram of the relationship curve between torque ripple.

[0027] Figure 7b FIG. 4 is a schematic diagram of a relationship curve between a real number k and torque ripple in another embodiment of the present invention.

[0028] Figure 7c is the first angle θ in another embodiment of the present invention b Schematic diagram of the relationship curve between torque and pressure.

[0029] Figure 8a is the first angle θ in another embodiment of the present invention b Schematic diagram of the relationship curve between torque ripple.

[0030] Figure 8b FIG. 4 is a schematic diagram of a relationship curve between a real number k and a torque ripple in yet another embodiment of the present invention.

[0031] Figure 8c is the first angle θ in another embodiment of the present invention b Schematic diagram of the relationship curve between torque and pressure.

[0032] Figure 9a It is a structural schematic diagram of the synchronous reluctance motor in the prior art in which the center of each barrier is aligned with the center of the stator tooth.

[0033] Figure 9b It is a structural schematic diagram of the synchronous reluctance motor in the prior art in which the center of each magnetic conductive channel is aligned with the center of the stator tooth.

[0034] Description of reference numerals:

[0035] 10. 901: stator;

[0036] 20, 903: rotor;

[0037] 101: stator slot;

[0038] 103, 9011: stator teeth;

[0039] 201: first rotor barrier;

[0040] 203: second rotor barrier;

[0041] 205: the third rotor barrier;

[0042] 9031, 9033, 9035: Barrier;

[0043] 9037: magnetic channel;

[0044] P1: number of motor poles;

[0045] L11: center line of the first rotor barrier end;

[0046] L12: the center line of the second rotor barrier end;

[0047] L13: the third rotor barrier end centerline;

[0048] L21, L22, L23: center line of stator teeth;

[0049] C: center;

[0050] C1: the center of the first rotor barrier end;

[0051] C2: the center of the second rotor barrier end;

[0052] C3: the third rotor barrier end center;

[0053] T1: stator tooth center;

[0054] L201, L203, L205: curve;

[0055] θ b , θ1: first angle;

[0056] θ2, θ3: angle;

[0057] k: real number;

[0058] N s : The number of stator slots;

[0059] L2011, L2031, L2051: curve;

[0060] L2000, L3000, L4000, L9000: curve;

[0061] L2001, L3001, L4001: Torque RMS value curve. DETAILED DESCRIPTION

[0062] The following is a more detailed description of the embodiments of the present invention with the help of drawings and component symbols, so that those skilled in the art can implement the invention after reading this specification.

[0063] Figure 1 is a schematic diagram for explaining the first angle θ of the present invention. b When is zero, the structure of the synchronous reluctance motor; Figure 2 is a schematic diagram for explaining the first angle θ of the present invention. b When is zero, the relationship curve between electromagnetic torque and rotor position; Figure 3 is a schematic diagram for explaining the first angle θ of the present invention. b When the value is zero, the output torque of each barrier and the phase and magnitude relationship curve between each output torque. Please refer to Figures 1 to 3 Since the effect of torque ripple comes from the complex slot effect between the stator and the rotor, the present invention focuses on the influence of each barrier on the torque ripple to find a motor structure that can minimize the torque ripple. In one embodiment of the invention, a low torque ripple synchronous reluctance motor includes a stator 10 and a rotor 20, wherein the stator 10 includes a plurality of stator slots 101 and a plurality of stator teeth 103, and each stator tooth 103 includes a stator tooth center T1.

[0064] The rotor 20 includes a plurality of motor poles, each of which includes a plurality of rotor barriers, wherein the plurality of rotor barriers include a first rotor barrier to an nth rotor barrier, wherein the first rotor barrier includes a first rotor barrier end center, and the nth rotor barrier includes an nth rotor barrier end center, where n is a positive integer greater than 1. For example, in one embodiment of the present invention, the rotor 20 includes four motor poles, Figure 1 1 shows one of the motor poles P1, and the motor pole P1 includes a first rotor barrier 201, a second rotor barrier 203, and a third rotor barrier 205. The first rotor barrier 201 includes a first rotor barrier end center C1, the second rotor barrier 203 includes a second rotor barrier end center C2, and the third rotor barrier 205 includes a third rotor barrier end center C3. Similarly, the nth rotor barrier and the nth rotor barrier end center can be obtained.

[0065] The first rotor barrier end center line L11 is included between the first rotor barrier end center C1 and a center C of the rotor 20, the stator tooth center line T1 is included between the stator tooth center line T1 and the center C of the rotor 20, such as the stator tooth center line L21, the stator tooth center line L22 and the stator tooth center line L23, and the first rotor barrier end center line L11 and the corresponding stator tooth center line L21 include a first angle θ b .

[0066] First, the present invention finds that the first angle θ b It is an important key design parameter that affects the torque ripple. When the center lines of the rotor barrier ends overlap with the corresponding stator tooth center lines, for example, the first rotor barrier end center line L11 overlaps with the corresponding stator tooth center line L21, the second rotor barrier end center line L12 overlaps with the corresponding stator tooth center line L22, and so on. At this time, the first angle θ b When the torque is 0 degrees, the relationship between the torque and the rotor position will be as follows: Figure 2 The output torque curve L9000 shown in FIG. 1 is then analyzed by the overlapping principle to analyze the torque curves output by the first rotor barrier 201, the second rotor barrier 203, and the third rotor barrier 205 and the phase relationship between them. The phase and magnitude relationship between the electromagnetic torques generated by each rotor barrier is shown in FIG. Figure 3 As shown, for example, curve L201 is the electromagnetic torque curve of the first rotor barrier 201, curve L203 is the electromagnetic torque curve of the second rotor barrier 203, and curve L205 is the electromagnetic torque curve of the third rotor barrier 205. Figure 2 and Figure 3 It can be seen that at the first angle θ b When the angle is 0 degrees, the output torque will have considerable fluctuations, and the torque ripple is as high as 119%. This analysis clearly shows that the designer must effectively adjust the phase of the output torque corresponding to each magnetic barrier to effectively suppress the difference between the maximum and minimum values ​​of the synthetic torque to achieve the goal of peak shaving and valley filling. This is the main discovery of the present invention and the main direction for solving high torque ripple.

[0067] Figure 4a is a schematic diagram for illustrating the structure of a low torque ripple synchronous reluctance motor according to an embodiment of the present invention; Figure 4b FIG. 1 is a schematic diagram for explaining the structure of a low torque ripple synchronous reluctance motor according to an embodiment of the present invention. Figure 4a and Figure 4b In one embodiment of the present invention, in addition to adjusting the first angle θ b In addition to the angle, the angle between the center of each rotor barrier end and the center of the stator tooth is further set. Specifically, the center of the nth rotor barrier end and the center C of the rotor 20 include an nth rotor barrier end center line, and the nth rotor barrier end center line and the corresponding stator tooth center line include an angle θ n For example, a first rotor barrier end center line L11 is included between the first rotor barrier end center line C1 and the center C of the rotor 20, and a first included angle θ1 is included between the first rotor barrier end center line L11 and the corresponding stator tooth center line L21. The first included angle θ1 is θb A second rotor barrier end center line L12 is included between the second rotor barrier end center C2 and the center C of the rotor 20, and an angle θ2 is included between the second rotor barrier end center line L12 and the corresponding stator tooth center line L22. A third rotor barrier end center line L13 is included between the third rotor barrier end center line C3 and the center C of the rotor 20, and an angle θ3 is included between the third rotor barrier end center line L13 and the corresponding stator tooth center line L23.

[0068] In the present invention, the angle θ n The formula is θ n =[(n-1)×k+1]×θ b , the value of the real number k is any value in the range of 2±0.5, the first angle θ b The formula is Any value in the range of s represents the number of stator slots 101. Therefore, Figure 4a The first angle θ1, the angle θ2 and the angle θ3 correspond to Figure 4b The first angle θ in b 、The second angle (k+1)θ b And the third angle (2k+1)θ b .

[0069] It is worth mentioning that since the opening size of the stator slot 101 and the air gap width of the rotor 20 will vary with different load and speed conditions, in order to achieve the best output torque and ripple, θ n May further include The amount of deviation.

[0070] Figure 5a is a schematic diagram for explaining the torque ripple and the first angle θ according to an embodiment of the present invention. b The relationship curve between Figure 5b FIG. 1 is a schematic diagram for illustrating a relationship curve between torque ripple and real number k according to an embodiment of the present invention. Figure 5a and Figure 5b As shown, in one embodiment of the present invention, the first angle θ has been effectively found b , the relationship between the real number k and the torque ripple. The value of the real number k in the range of 2±0.5 can have the smallest torque ripple. The first angle θ b The minimum torque ripple can be obtained between 1.25 and 1.75 degrees. Therefore, the position where the maximum and minimum torque of each barrier occurs can be determined by the angle θ nThe design is effectively staggered, and the torque ripple is minimized without affecting the effective output torque. It should be understood that the first angle that can have the smallest torque ripple may be due to the number N of stator slots 101. s Change and be different.

[0071] In other words, the present invention describes in detail the relative relationship and design method of the synchronous reluctance motor center rotor, stator and torque ripple, that is, the center line of the end of the nth rotor barrier and the corresponding stator tooth center line include an angle θ n , and the angle θ n And the first angle θ b In this way, the first angle θ can be effectively b By setting the output torque corresponding to each magnetic barrier, the phase is effectively adjusted to effectively suppress the maximum and minimum values ​​of the synthetic torque, achieve the goal of peak shaving and valley filling, and provide the structure of a low-torque ripple synchronous reluctance motor.

[0072] Figure 6a is a schematic diagram for illustrating the structure of a low torque ripple synchronous reluctance motor according to another embodiment of the present invention; Figure 6b is a schematic diagram for illustrating a curve of the relationship between the output torque phase and magnitude of each barrier in another embodiment of the present invention; Figure 6c is a schematic diagram for illustrating the first angle θ in another embodiment of the present invention. b Please refer to the relationship curve between torque and Figures 6a to 6c In another embodiment of the present invention, the number of stator slots 101 is twenty-four (N s =24), the number of motor poles is four, and each motor pole includes two or three rotor barriers, for example Figure 6a The motor pole number P1 shown includes three rotor barriers (a first rotor barrier 201, a second rotor barrier 203 and a third rotor barrier 205). In this structure, the real number k is further set to 1.84. The formula can be used to convert the first angle θ b Set to 1.46°, then according to the angle θ n The formula for the angle θ n =[(n-1)×k+1]×θ b , we can get the angle θ2 to be 4.14° and the angle θ3 to be 6.83°. Figure 6b It can be seen that the curve L2011 of the first rotor barrier 201 (first barrier), the curve L2031 of the second rotor barrier 203 (second barrier) and the curve L2051 of the third rotor barrier 205 (third barrier), wherein the angle θ n May further include The amount of deviation.

[0073] Under the structure of this embodiment, Figure 6c The first angle θ is shown b =1.46° curve L2000, the first angle θ b =1.46° torque RMS value curve L2001 and the first angle θ b =0° curve L9000. It can be seen from the torque RMS value curve L2001 that the output torque of the low torque ripple synchronous reluctance motor is 6.08 Newton meters (Nm), and the torque ripple of the low torque ripple synchronous reluctance motor is 10.48%. Therefore, compared with the curve L9000, the present invention can effectively reduce the torque ripple from 117.71% (the first angle θ b =0°) is reduced to 10.48% (the first angle θ b =1.46°). If the overlap analysis is performed and Figure 6b As can be seen from the curve diagram, the positions where the output torque of each barrier has the maximum value and the minimum value can be effectively staggered, achieving the effect of peak shaving and valley filling and the purpose of suppressing torque ripple. It should be understood that when each motor pole includes two rotor barriers, only the first angle θ needs to be set b And then according to the angle θ n The formula for the angle θ n =[(n-1)×k+1]×θ b , the angle θ2 can be obtained.

[0074] Figure 7a is a schematic diagram for illustrating the first angle θ in another embodiment of the present invention. b Relationship curve with torque ripple; Figure 7b is a schematic diagram for illustrating a relationship curve between a real number k and a torque ripple in another embodiment of the present invention; Figure 7c is a schematic diagram for illustrating the first angle θ in another embodiment of the present invention. b Please refer to the relationship curve between torque and Figure 4a , Figures 7a to 7c In another embodiment of the present invention, the number of stator slots 101 is thirty-six (N s =36), each motor pole number includes three or four rotor barriers. Under this structure, the real number k is further set to 1.61, according to the first angle The formula can be used to convert the first angle θ b Set to 0.93°, then according to the angle θ n The formula for the angle θ n =[(n-1)×k+1]×θ b , we can get the remaining angle θ n The angle θn May further include The amount of deviation.

[0075] Under the structure of this embodiment, Figure 7c The first angle θ is shown b = 0.93° curve L3000, the first angle θ b = 0.93° torque root mean square value curve L3001 and the first angle θ b =0° curve L9000. It can be seen from the torque RMS value curve L3001 that the output torque of the low torque ripple synchronous reluctance motor is 39.54 Newton meters (Nm), and the torque ripple of the low torque ripple synchronous reluctance motor is 9.12%. Therefore, compared with the curve L9000, the present invention can effectively reduce the torque ripple from 118.85% (the first angle θ b =0°) is reduced to 9.12% (the first angle θ b =0.93°). Similarly, through overlapping analysis, it can be found that the positions where the output torque of each barrier has the maximum value and the minimum value can be effectively staggered, achieving the effect of peak shaving and valley filling and the purpose of suppressing torque ripple.

[0076] Figure 8a is a schematic diagram for illustrating the first angle θ in another embodiment of the present invention. b Relationship curve with torque ripple; Figure 8b is a schematic diagram for illustrating a relationship curve between a real number k and a torque ripple in yet another embodiment of the present invention; Figure 8c is a schematic diagram for illustrating the first angle θ in another embodiment of the present invention. b Please refer to the relationship curve between torque and Figure 4a , Figures 8a to 8c In another embodiment of the present invention, the number of stator slots 101 is forty-eight (N s =48), each motor pole number includes four, five or six rotor barriers. Under this structure, the real number k is further set to 1.63, according to the first angle The formula can be used to convert the first angle θ b Set to 0.51°, then according to the angle θ n The formula for the angle θ n =[(n-1)×k+1]×θ b , we can get the remaining angle θ n The angle θ n May further include The amount of deviation.

[0077] Under the structure of this embodiment, Figure 8c The first angle θ is shown b= 0.51° curve L4000, the first angle θ b = 0.51° torque root mean square value curve L4001 and the first angle θ b =0° curve L9000. It can be seen from the torque RMS value curve L4001 that the output torque of the low torque ripple synchronous reluctance motor is 60.74 Newton meters (Nm), and the torque ripple of the low torque ripple synchronous reluctance motor is 6.23%. Therefore, compared with the curve L9000, the present invention can effectively reduce the torque ripple from 96.34% (the first angle θ b =0°) is reduced to 6.23% (the first angle θ b =0.51°). Similarly, through overlapping analysis, it can be found that the positions where the output torque of each barrier has the maximum value and the minimum value can be effectively staggered, achieving the effect of peak shaving and valley filling and the purpose of suppressing torque ripple.

[0078] From the above content of the present invention, it can be known that the present invention provides a low torque ripple synchronous reluctance motor. The low torque ripple synchronous reluctance motor of the present invention has the following effects and advantages: 1. It is found that the first rotor barrier end center line in the rotor and the corresponding stator tooth center line include a first angle θ b , the first angle θ b It is an important key design parameter that affects torque ripple. 2. The present invention finds a new first angle θ b The formula for the remaining angle θ n The formula allows users to design a low torque ripple synchronous reluctance motor based on the formula. 3. The present invention effectively uses the first angle θ b By setting the output torque corresponding to each magnetic barrier, the phase is effectively adjusted to effectively suppress the maximum and minimum values ​​of the synthetic torque, achieve the goal of peak shaving and valley filling, and provide the structure of a low-torque ripple synchronous reluctance motor.

[0079] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A low torque ripple synchronous reluctance motor, characterized in that: include: a stator comprising a plurality of stator slots and a plurality of stator teeth, each of the plurality of stator teeth comprising a stator tooth center; and a rotor, comprising a plurality of motor poles, each of the plurality of motor poles comprising a plurality of rotor barriers, the plurality of rotor barriers comprising a first rotor barrier to an nth rotor barrier, the first rotor barrier comprising a first rotor barrier end center, the nth rotor barrier comprising an nth rotor barrier end center, and n is a positive integer greater than 1; Wherein, a first rotor barrier end center line is included between the center of the first rotor barrier end and a center of the rotor, a stator tooth center line is included between the center of the stator tooth portion and the center of the rotor, and a first angle θ is included between the first rotor barrier end center line and the corresponding stator tooth portion center line. b ; Wherein, the center of the nth rotor barrier end and the center of the rotor include an nth rotor barrier end center line, and the nth rotor barrier end center line and the corresponding stator tooth center line include an angle θ n ; Among them, the angle θ n The formula is θ n =[(n-1)×k+1]×θ b , the value of the real number k is any value within the range of 2±0.5, the first angle θ b The formula is Any value in the range of N s is the number of the plurality of stator slots.

2. The low torque ripple synchronous reluctance motor according to claim 1, characterized in that: The number N of the plurality of stator slots s There are twenty-four, and each of the plurality of motor poles includes two or three rotor barriers.

3. The low torque ripple synchronous reluctance motor according to claim 1, characterized in that: The number N of the plurality of stator slots s The number of rotor barriers is thirty-six, and each of the plurality of motor poles includes three or four rotor barriers.

4. The low torque ripple synchronous reluctance motor according to claim 1, characterized in that: The number N of the plurality of stator slots s The number of rotor barriers is forty-eight, and each of the plurality of motor poles includes four, five or six rotor barriers.

5. The low torque ripple synchronous reluctance motor according to claim 1, characterized in that: The angle θ n include The amount of deviation.

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