JP2011182638A - Magnetic transmission assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic transmission assembly that is adapted to be integrated with a motor or a generator. <P>SOLUTION: The magnetic transmission assembly includes a rotor, a stator and a magnetic conduction element. As for the rotor and the stator, one covers the other in a sleeve shape at the same axis, and both have R pieces of pole pairs and ST1 pieces of pole pairs, respectively. The magnetic conduction element is arranged between the rotor and the stator and has a plurality of a magnetic permeability region. When the magnetic conduction element is driven, the magnetic conduction element makes it possible that PN1 pieces or PN2 pieces of magnetic permeability regions correspond to the rotor and the stator selectively. The magnetic conduction region corresponding to the rotor and the stator generates a prescribed variable velocity ratio by mutually acting upon magnetic fields of the R pieces of pole pairs and the ST1 pieces of pole pairs. The magnetic transmission assembly is incorporated into the motor and improves a driving power density. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a transmission assembly, and more particularly to a magnetic transmission assembly.

  The transmission not only can be used for power transmission and transmission, but also has a function of accelerating or decelerating the rotation of the power source. Conventional transmissions applied to an automobile engine include a mechanical transmission and a hydraulic transmission. The magnetic transmission is applied to an electric vehicle or a hybrid vehicle.

  Regarding variable speed motor technology, referring to Patent Document 1, it is described that power output from a motor is transmitted through a mechanical transmission assembly and torque conversion and transmission are realized.

  Patent Documents 2 and 3 disclose a method for realizing variable speed transmission by changing the number of poles of the stator of the induction motor.

  Refer to Non-Patent Document 1 for the technology related to the magnetic transmission.

  Mechanical transmissions have the disadvantages of high noise levels and heavy weight. Conventional magnetic transmissions have reduced vibration and noise levels, but this too cannot reduce weight. In addition, when applied to an electric vehicle, an electric motor not only needs to satisfy various output torque and travel speed requirements, but also needs to satisfy high performance operation requirements. Therefore, the motor is usually combined with the transmission. In such a combination, since the total weight of the motor and the transmission is heavy, it is quite difficult to improve the overall drive power density of the motor and the transmission.

U.S. Pat. No. 3,980,937 US Pat. No. 5,825,111 US Pat. No. 7,598,648

K. Atallah and D. Howe, "A Novel High-Performance Magnetic Gear", IEEE Transactions on Magnetics, Vol. 37, No. 4, July, 2001

  In view of the above problems, a magnetic transmission assembly is disclosed. This magnetic transmission assembly can be easily incorporated into a motor (eg, an electric motor) or generator to achieve a lightweight design. The integrated motor improves drive power density.

  According to one embodiment, the magnetic transmission assembly includes a rotor, a stator, and a magnetic conductive element (also referred to as a magnetically permeable element). The rotor is coaxial with the stator and is covered in a sleeve shape by the stator. The rotor has a plurality of poles and R pole pairs. The stator has a plurality of poles and ST1 pole pairs. The magnetic conductive element is disposed between the rotor and the stator and has a plurality of magnetically permeable regions. When the magnetic conducting element is driven, the magnetic conducting element selectively associates PN1 or PN2 permeable regions with the rotor and the stator, and PN1-3 ≦ R + ST1 ≦ PN1 + 3 or PN2-3 ≦. R + ST1 ≦ PN2 + 3 is satisfied.

  According to one embodiment of the magnetic conducting element, the magnetic conducting element comprises a first ring and a second ring. The first ring and the second ring are connected in the axial direction. The first ring has PN1 permeable blocks. The second ring has PN2 permeable blocks. When the magnetic conducting element is driven axially, the magnetic conducting element selectively allows the first ring or the second ring to move to a position between the rotor and the stator. .

  According to a second embodiment of the magnetic conducting element, the magnetic conducting element comprises a first ring and a second ring. The first ring is disposed radially outside the second ring, and the first ring and the second ring are disposed between the stator and the rotor. When the magnetic conducting element is driven, the first ring and the second ring move relatively between a first position and a second position. When the first ring and the second ring are located in the first position, the magnetic conducting element has PN1 permeable regions. When the first ring and the second ring are located in the second position, the magnetic conducting element has PN2 permeable regions.

  According to another embodiment, the stator comprises a plurality of induction coils and a pole number modulation circuit. Each induction coil forms a pole when energized, and the pole number modulation circuit selectively switches the plurality of induction coils to ST1 pole pairs and ST2 pole pairs. Here, PN2-3 ≦ R + ST2 ≦ PN2 + 3 is satisfied.

  According to yet another embodiment, a magnetic transmission assembly includes a rotor, a stator, and a magnetic conducting element. The stator has a plurality of poles, and the plurality of poles has R pole pairs. The stator is coaxial with the rotor, covers the rotor like a sleeve, and has a plurality of poles. The plurality of poles of the stator has ST1 pole pairs. The magnetic conductive element is disposed between the rotor and the stator and has PN1 magnetically permeable regions. The PN1 magnetically permeable regions correspond to the rotor and the stator. PN1-3 ≦ R + ST1 ≦ PN1 + 3 is satisfied.

As described above, the magnetically conductive element is disposed between the stator and the rotor, and can selectively change the number of magnetically permeable regions (and hence the number of magnetic gaps). Therefore, this magnetic transmission assembly can generate various variable speed ratios (ratio of stator rotation speed to rotor rotation speed) between the stator and the rotor. In another embodiment, various variable speed ratios can be realized by designing the stator to have variable pole pairs and combining the magnetically permeable element and the rotor. Since each of the magnetically permeable element, the stator, and the rotor has a hollow annular shape, the entire magnetic transmission assembly is small in volume and weight and can be easily incorporated into an electric motor. As a result, the driving power density (W / Kg or W / m ³ ) of the integrated motor increases.

These and other aspects of the invention will become apparent from the accompanying drawings and the following description of the preferred embodiments. However, these variations and modifications may be made without departing from the spirit and scope of the novel idea of the present invention.
The present invention will be more fully understood from the following detailed description. The following description is for illustrative purposes only and is not intended to limit the invention.

1 is a three-dimensional schematic structural diagram of a first embodiment of a magnetic transmission assembly according to the present invention. 1 is a three-dimensional schematic development view of a first embodiment of a magnetic transmission assembly according to the present invention. It is the schematic which illustrates the pole pair of the stator of 1st Embodiment of the magnetic transmission assembly which concerns on this invention. 1 is a cross-sectional view of a magnetic conduction element of a first embodiment of a magnetic transmission assembly according to the present invention. FIG. 4B is a partially enlarged cross-sectional view of the first embodiment of the magnetically conductive element of FIG. 4A. FIG. 4B is another partial enlarged cross-sectional view of the first embodiment of the magnetically conductive element of FIG. 4A. FIG. 6 is a schematic winding diagram of another embodiment of a stator of a magnetic transmission assembly according to the present invention. FIG. 5B is a schematic diagram illustrating the operation of the embodiment of the stator of FIG. 5A. 6 is a schematic diagram illustrating the switching of a pole pair between FIGS. 5A and 5B. FIG. FIG. 4 is a schematic view of a second embodiment of a magnetic conduction element of a magnetic transmission assembly according to the present invention. FIG. 4 is a schematic view of a second embodiment of a magnetic conduction element of a magnetic transmission assembly according to the present invention. FIG. 4 is a schematic view of a second embodiment of a magnetic conduction element of a magnetic transmission assembly according to the present invention. FIG. 6 is a schematic view of a third embodiment of a magnetic conducting element of a magnetic transmission assembly according to the present invention. It is a three-dimensional schematic development view of a second embodiment of the magnetic transmission assembly according to the present invention. FIG. 6 is a schematic view of a fourth embodiment of a magnetic conductive element of a magnetic transmission assembly according to the present invention. FIG. 10B is a partial cross-sectional view taken along line 10B-10B in FIG. 10A. FIG. 10B is a schematic state diagram of FIG. 10B. FIG. 6 is a schematic view of a fourth embodiment of a magnetic conductive element of a magnetic transmission assembly according to the present invention. It is a fragmentary sectional view which followed the 11B-11B line | wire of FIG. 11A. FIG. 11B is a schematic state diagram of FIG. 11B. FIG. 11B is another schematic state diagram of FIG. 11B. 1 is a schematic structural diagram of a phase separation motor to which the present invention is applied.

  1 and 2 are a three-dimensional schematic structure diagram and a three-dimensional development view according to an embodiment of the present invention. As can be seen, the magnetic transmission assembly includes a rotor 20, a stator 30, and a magnetic conduction element 40 (also referred to as a magnetic transmission element). This magnetic transmission assembly is suitable for integration with a motor (eg, an electric motor) or a generator. For example, when a magnetic transmission assembly is integrated with an electric motor of an electric vehicle and the motor drive outputs electricity to the magnetic transmission assembly, the magnetic transmission assembly generates rotational power in the rotor, and at the same time the motor drive By appropriately controlling the variable speed ratio of the magnetic transmission assembly, the magnetic transmission assembly can output various amounts of power (power = output torque × rotational speed). Since the magnetic transmission assembly functions as both a motor and a transmission, the total volume and weight are small, and a high driving power density can be obtained. Here, the driving power density may be, but is not limited to, output power / volume or output power / weight (that is, output torque × rotational speed / volume or output torque × rotational speed / weight). In addition, when the magnetic transmission assembly is applied to a motor, the rotor 20 receives rotational power, and as a result, a coil (described later) of the stator 30 outputs electric power generated by cutting off the magnetic field. I can do it. This electric power is sent to the rectification / voltage adjustment circuit and output. Since the magnetic transmission assembly is controlled to produce a variable speed ratio, the controller can be used to vary the magnetic transmission assembly when the input rotational power changes significantly or the system conversion efficiency is to be improved. The speed ratio may be adjusted.

  1 and 2, the stator 30 may be a fixed magnet or an induction magnet (or referred to as an electromagnet). In this embodiment, an induction magnet is taken as an example. A plurality of bumps 32 a and 32 b are annularly arranged inside the stator 30. An induction coil (described later) is wound around the bumps 32a and 32b and forms a pole when energized. In the illustrated embodiment, the stator 30 has 48 bumps 32a, 32b, and each bump 32a, 32b forms one pole pair when energized. In the present embodiment, there are four phases each having 12 pole pairs. FIG. 3 is a schematic view illustrating a pole pair of the stator 30 according to one embodiment of the present invention. As can be seen, adjacent poles have opposite polarities (magnetic north pole N and magnetic south pole S). Two adjacent poles having opposite polarities form a pole pair (for example, S1 and N1 form one pole pair as shown in the figure). As can be seen from the figure, there are a total of 12 pole pairs, but this is merely an example, and the present invention is not limited to this. The number of pole pairs is represented by ST1.

  The rotor 20 may be a fixed magnet or an induction magnet. In the present embodiment, the rotor 20 will be described using a fixed magnet as an example. The rotor 20 has a plurality of poles and R pole pairs. In the present embodiment, the rotor 20 has, for example, 20 pole pairs. The stator 30 and the rotor 20 are arranged on the same axis (sleeve-like and coaxial), and in this embodiment, the rotor 20 is arranged on the radially inner side of the stator 30, but the present invention is not limited to this. . The object of the present invention can be achieved even if the stator 30 is disposed radially inside the rotor 20. Further, the direction of the poles of the rotor 20 (lines of magnetic force) is the same as the direction of the poles of the stator 30 (lines of magnetic force).

  The permeable element 40 may be laminated steel, the material of which is a soft magnetic composite material (SMC), reducing eddy currents and iron losses.

  Referring to FIGS. 1 and 2, the magnetic conductive element 40 includes a first ring 42 (also referred to as a first sleeve) and a second ring 44 (also referred to as a second sleeve). The first ring 42 is disposed radially outside the second ring 44, and the first ring 42 and the second ring 44 are disposed between the stator 30 and the rotor 20. The first ring 42 and the second ring 44 are in contact with each other or separated by a distance (the latter is shown in the figure). The first ring 42 has a plurality of magnetically permeable blocks 420 and 422 (also referred to as magnetic conductive blocks). The second ring 44 also has a plurality of magnetically permeable blocks 440 and 442. When the first ring 42 is positioned radially outside the second ring 44, the magnetically permeable blocks 420, 422, 440, and 442 form a plurality of magnetically permeable regions (described later). When the first ring 42 and / or the second ring 44 are driven, the first ring 42 and the second ring 44 relatively move (relatively rotate) between the first position and the second position. At this time, the number of magnetically permeable regions changes accordingly. This will be described below.

  4A is taken along a plane perpendicular to the axial direction of the first embodiment of the magnetic conducting element according to the present invention when the first ring 42 of FIG. 2 is arranged in a sleeve shape on the radially outer side of the second ring 44. It is sectional drawing. To facilitate explanation of the relative rotation of the first ring 42 and the second ring 44, the arc segments 429, 449 of FIG. 4A are enlarged in FIG. 4B. Arc segments 429, 449 are at an angle of 45 °. The first ring 42 and the second ring 44 have a total of eight arc segments 429, 449. FIG. 4B is a partially enlarged cross-sectional view when the first ring 42 and the second ring 44 are located at the first position. FIG. 4C is a partially enlarged cross-sectional view when the first ring 42 and the second ring 44 are located at the second position.

  As can be seen from FIG. 4B, the magnetically permeable block 420 of the first ring 42 and the permeable block 440 of the second ring 44 are in a connected state (or overlap) and form a permeable region 46a. Similarly, the permeable block 422 of the first ring 42 and the permeable block 442 of the second ring 44 are in a connected state, and form a permeable region 46b. Three magnetic gaps 48a, 48b and 48c are formed between the magnetically permeable regions 46a and 46b. Since the first ring 42 and the second ring 44 have eight equal arc segments 429, 449, the first ring 42 and the second ring 44 have a total of 24 magnetic gaps 48a, 48b, 48c (3 × 8 = 24, that is, having 24 magnetically permeable regions 46a and 46b).

  Referring to FIG. 4C, a partially enlarged cross-sectional view when the first ring 42 and the second ring 44 are located at the second position is shown. The permeable block 420 of the first ring 42 and the permeable block 440 of the second ring 44 are in a connected state, and form a permeable region 46a. Similarly, the permeable block 422 of the first ring 42 and the permeable block 442 of the second ring 44 are in a connected state, and form a permeable region 46b. As can be seen, the arc segments 429, 449 have four magnetic gaps 48a, 48b, 48c, 48d, and four permeable regions 46a, 46b. Accordingly, the first ring 42 and the second ring 44 have a total of 32 (4 × 8 = 32) magnetic gaps 48a, 48b, 48c, and 48d.

  The connection state between the magnetically permeable blocks 420 and 440 indicates that the distance between the both is close rather than the contact state. The close distance means that the permeable blocks 420 and 440 do not touch and overlap each other in the radial direction, or the permeable blocks 420 and 440 do not touch and are separated by a distance in the radial or circumferential direction. Means that In other words, when the permeable blocks 420 and 440 are not in contact, there are two distances between the permeable blocks 420 and 440. One is the radial distance and the other is the circumferential distance. With respect to the radial distance, it has been experimentally found that a single magnetically permeable region 46a can be formed if the radial distance is less than 5 mm. Obviously, this distance is also related to the strength of the magnetic field lines of the stator 30. The greater the field line strength, the greater the distance. That is, the radial distance can vary depending on the size of the motor and the strength of the magnetic field lines.

  The circumferential distance (arc length) is the angle at the center of the circle (center of the stator) between the boundaries of the permeable blocks 420, 440, for example, as shown in FIG. It is represented by the angle between the right edges of the magnetic block 440. To further define the angle or arc length, the interval formed by the distance between the left edge of the permeable block 420 and the right edge of the permeable block 440 is defined as an air slot. When the magnetic transmission assembly is operated, each magnetic gap 48a, 48b, 48c (FIG. 4B) generates a pole (hereinafter referred to as an air gap pole), and when the permeable blocks 420, 440 have air slots, The air slot also has a pole (hereinafter referred to as an air slot pole). In this case, in order to allow the magnetically permeable blocks 420 and 440 to form the magnetically permeable region 46a, the magnetic strength of the air slot pole is preferably smaller than 20% of the magnetic strength of the air gap pole. The arc length or angle derived from the magnetic strength of the air slot pole is the preferred circumferential distance.

  The material of the magnetic permeable blocks 420, 422, 440, 442 may be any magnetically permeable material, such as iron-based material or soft iron. The relative rotation of the first ring 42 and the second ring 44 may be driven in a mechanical or electromagnetic manner. In this driving method, as long as the relative position of the first ring 42 and the second ring 44 can move between the first position and the second position, the first ring 42 or the second ring 44 can be driven independently, or The first ring 42 and the second ring 44 may be driven simultaneously.

  4B and 4C, when the magnetic conducting element 40 is driven, the first ring 42 and the second ring 44 are in the first position (position of FIG. 4B) and the second position (position of FIG. 4C). ), And when the first ring 42 and the second ring 44 are in the first position, the magnetic conductive element 40 has 24 (hereinafter referred to as PN1) permeable regions 46a and 46b, When the first ring 42 and the second ring 44 are located at the second position, the magnetic conductive element 40 has 32 (hereinafter referred to as PN2) magnetically permeable regions 46a and 46b.

  By designing the first ring 42 and the second ring 44 of the magnetic conduction element 40 so that they can move relative to each other, the magnetic conduction element 40 selectively includes the PN1 or PN2 permeable regions 46a and 46b in the rotor 20 and the stator. 30 can be enabled. By combining the PN1 or PN2 magnetic permeable regions 46a, 46b with the magnetic field of the rotor 20 and the magnetic field of the stator 30, an acceleration or deceleration (transmission) effect can be generated. The acceleration ratio or the reduction ratio is given by the following equation (1).

  In this equation, G is a variable speed ratio (ie, acceleration or deceleration ratio), m and k are harmonic orders, p is the number of pole pairs of the rotor 20, and n is a magnetically permeable region 46a, 46b. (Number of steel billets). In the case of the fundamental wave, m = −k = 1, and in the present embodiment, the number of pole pairs of the rotor 20 is 20. Taking the case where the first ring 42 and the second ring 44 are located at the first position as an example, the number of magnetically permeable regions is 24. By substituting this number into the above equation, G = (1 × 20) / (1 × 24−1 × 20) = 5 is obtained. That is, the ratio between the rotational speed of the stator and the rotational speed of the rotor is 5: 1. Taking the case where the first ring 42 and the second ring 44 are located at the second position as an example, the number of magnetically permeable regions is 32. By substituting this number into the above equation, G = (1 × 20) / (1 × 32−1 × 20) = 1.6 is obtained. That is, the ratio between the rotational speed of the stator and the rotational speed of the rotor is 1.6: 1.

  As can be seen from the above, the proper configuration and design of the magnetic conductive element 40, the stator 30, and the rotor 20 can allow the magnetic transmission assembly to have a transmission effect.

In order to further improve the stability of the variable speed ratio, the number ST1 of pole pairs of the stator 30, the number R of pole pairs of the rotor 20, and the number PN1 of the permeable regions 46a and 46b of the magnetic conduction element 40 When PN2 is maintained in the following relationship, a stable variable speed ratio and driving force can be obtained.
PN1-3 ≦ R + ST1 ≦ PN1 + 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Formula (2)
PN2-3 ≦ R + ST1 ≦ PN2 + 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation (3)

  Taking this embodiment as an example, when the magnetic conduction element 40 is located at the second position, the expression (3) satisfies PN2-3 ≦ R + ST1 ≦ PN2 + 3, and the magnetic conduction element 40 is in the first position. When in position, equation (2), PN1-3 ≦ R + ST1 ≦ PN1 + 3 is not satisfied, but the transmission requirements can be satisfied. In this embodiment, when it is desired to satisfy the expressions (2) and (3) at the same time, the design of the magnetically permeable blocks 420, 422, 440, and 442 of the magnetic conductive element 40 may be changed to satisfy the expression (2). For example, when ST1 is 12 and PN1 and PN2 are 35 and 29, respectively, the above equations (2) and (3) can be satisfied simultaneously.

  In the present embodiment, when it is desired to satisfy the expressions (2) and (3) at the same time without changing the design of the magnetic conductive element 40 (however, as will be described later, the expression (3) needs to be slightly changed), FIG. The embodiment of the stator 30 of 5A and 5B can be used. FIG. 5A is a schematic winding diagram of another embodiment of the stator 30 of the magnetic transmission assembly according to the present invention, and FIG. 5B is a schematic diagram illustrating the operation of the embodiment of the stator 30 of FIG. 5A.

  As can be seen, another embodiment of the stator 30 comprises a plurality of induction coils 34 a, 34 b, 34 c, 34 d and a pole number modulation circuit 36. The induction coils 34a, 34b, 34c, 34d are wound around the bumps 32a, 32b. 5A and 5B show only the induction coils 34a, 34b, 34c, 34d of three pole pairs (N1, N2, N3, S1, S2, S3), but only the stator 30 has coils 34a, 34b, It is not intended to include 34c, 34d. The pole number modulation circuit 36 includes two switches 360 and 362. When the switches 360 and 362 are in the state shown in FIG. 5A and connected to the power source, the poles formed by the induction coils 34a, 34b, 34c, and 34d have the polarity shown in FIG. That is, the stator 30 has a total of 12 pole pairs. When the switches 360 and 362 are in the state shown in FIG. 5B and connected to the power source, the induction coils 34c and 34d that originally formed N1 and S3 form opposite poles due to the reversely connected power source. (That is, N1 turns into a magnetic south pole and S3 turns into a magnetic north pole). FIG. 6 is a schematic diagram illustrating the switching of pole pairs between FIGS. 5A and 5B.

  As can be seen, the dashed block represents a schematic diagram of the polarity of the poles that are formed when the switches 360, 362 are in the state shown in FIG. 5B. In the figure, N1, N4, N7, and N10 are magnetic north poles in FIG. 5A, and S3, S6, S9, and S12 are magnetic south poles in FIG. 5A. At this time, the stator 30 has a total of 12 (hereinafter, ST1) pole pairs (that is, N1, S1, N2, S3... N12, S12). However, in FIG. 5B, due to the clever design of the switches 360, 362 and the circuit, N1, N4, N7, N10 change to magnetic south poles after energization, S3, S6, S9, S12 change to magnetic north poles, The pole does not change. Therefore, the stator 30 has a total of 4 (hereinafter, ST2) pole pairs (indicated by broken line blocks N1 ', S1', N2 ', S2', N3 ', S3', N4 ', S4'). In other words, when the induction coils 34a, 34b, 34c, 34d are switched to the ST1 pole pair, the adjacent induction coils 34a, 34b, 34c, 34d have opposite magnetic polarities, and the induction coils 34a, 34b, 34c , 34d are switched to ST2 pole pairs, the induction coils 34a, 34b, 34c, 34d are grouped into a plurality of coil groups 35a, 35b, and the adjacent coil groups 35a, 35b have opposite polarities. In the present embodiment, each coil group 35a, 35b includes three sequentially adjacent induction coils 34a, 34b, 34c, 34d. Here, the term “sequentially adjacent” means “connected”, and in FIG. 5B, for example, S1, N1, and S2 belong to the sequentially adjacent induction coils 34a, 34b, 34c, and 34d.

Based on the above, the stator 30 can selectively switch the induction coils 34a, 34b, 34c, and 34d between the 12 (ST1) pole pair and the 4 (ST2) pole pair by the pole number modulation circuit 36. After integrating the embodiment of the stator 30 of FIG. 5A with switching the number of magnetically permeable regions of the magnetic conducting element 40, the variable speed ratio (ratio of stator rotation speed to rotor rotation speed) is: It can be obtained as shown in the table, and the above formula (2) and the following formula (4) can be satisfied.
PN2-3 ≦ R + ST2 ≦ PN2 + 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Equation (4)

  The pole modulation circuit 36 takes the embodiment of FIG. 5A as an example, but the present invention is not limited to this. With appropriate circuit and switch design, the number of pole pairs of the stator 30 may be increased or decreased by different ratios. The stator 30 may also be wound to meet more diverse requirements for pole pairs using more complex and diverse designs, such as a winding chart. The winding mode is not limited to these, but may be Lucas, Retzbach and Kuhfuss (LRK) winding, distributed LRK (D-LRK) winding, or ABC winding. Details are described below.

  With respect to another embodiment of the magnetically conductive element 40 of FIG. 4A, reference is made to FIGS. 7A, 7B, and 8. The magnetic conducting element 50 (second embodiment) of FIGS. 7A, 7B, and 7C is similar to that of FIG. 4B. As can be seen, the magnetically conductive element 50 includes a first ring 52, a second ring 54, a third ring 56, and a fourth ring 58. The first ring 52, the second ring 54, the third ring 56, and the fourth ring 58 overlap each other in the radial direction, and the magnetically permeable blocks 53, 55, 57, 59 (first, second, third, And a fourth magnetic permeability block). When the magnetic conductive element 50 is located at the position (first position) in FIG. 7A, the magnetically permeable blocks 53, 55, 57, 59 are in a connected relationship, so that the arc segment has two permeable regions 51a, 51b and two It has a magnetic gap (gap separated by a magnetically permeable region in the circumferential direction). When the magnetic conductive element 50 is located at the position (second position) in FIG. 7B, the magnetically permeable blocks 53, 55, 57, 59 are separated from each other, so that the arc segment has four permeable regions 51a, 51b, 51c. , 51d and four magnetic gaps. When the magnetic conduction element 50 is located at the position (third position) in FIG. 7C, the magnetically permeable blocks 53, 55, 57, 59 completely overlap each other in the radial direction, and the magnetic conduction element 50 has two permeable regions. 51a, 51b and two magnetic gaps. When the magnetic conducting element 50 is located at the position of FIG. 7A and the position of FIG. 7C, the same number of magnetically permeable regions 51a, 51b is obtained, but the magnetic flux is different and therefore the transmitted torque is different accordingly. Accordingly, the magnetic conduction element 50 can be appropriately designed and controlled to change the variable speed ratio and change the transmitted torque.

  The magnetic conductive elements 40 and 50 of FIGS. 4A and 7A employ a plurality of annular (cylindrical) permeable rings (that is, first rings 42 and 52, etc.) that overlap each other in the radial direction. The number depends on the actual design requirements, i.e. three or five permeable rings may be combined, but the invention is not limited to this. The size, arrangement, and number of permeable blocks within the permeable ring may be appropriately designed to produce various numbers of magnetic gaps to achieve the required variable speed ratio.

  FIG. 8 is a schematic view of a third embodiment of the magnetic conductive element of the magnetic transmission assembly according to the present invention. The magnetically permeable element 60 (also referred to as a magnetic conductive element) includes a first ring 62 and a second ring 64. The first ring 62 and the second ring 64 are connected in the axial direction. The magnetically permeable element 60 is disposed between the stator 30 and the rotor 20. The first ring 62 and the second ring 64 are axially movable into the gap between the stator 30 and the rotor 20, and only one of the first ring 62 and the second ring 64 at a time is a stator. 30 and the rotor 20. In short, the magnetically permeable element 60 is driven in the axial direction and the magnetically permeable element 60 selectively allows the first ring 62 or the second ring 64 to move to a position between the rotor 20 and the stator 30. . Thus, the sandwiched first ring 62 or second ring 64 interacts with the magnetic fields of the stator 30 and the rotor 20 to generate a specific variable speed ratio. The number of magnetically permeable blocks 63 in the first ring 62 (for example, PN1 magnetically permeable blocks) is different from the number of magnetically permeable blocks 65 in the second ring 64 (for example, PN2 magnetically permeable blocks). In the embodiment of FIG. 8, the number of the permeable blocks 63 of the first ring 62 is 32, and the number of the permeable blocks 65 of the second ring 64 is 24. That is, the magnetically permeable element 60 is suitable for replacing the magnetically permeable element 40 of the embodiment of FIG. The permeable blocks 63 and 65 of this embodiment are equivalent to the permeable regions 46a and 46b of FIGS. 4B and 4C.

  As described above, the first ring 62 and the second ring 64 are connected in the axial direction. Referring to FIG. 8 again, the first ring 62 and the second ring 64 are connected in the axial direction via an electrical insulating element 66a. The two electrically insulating elements 66b and 66c are connected to the outside of the first ring 62 and the second ring 64, respectively, and fix the magnetically permeable block 65 of the second ring 64 and the permeable block 63 of the first ring 62.

  See also FIG. FIG. 9 is a three-dimensional schematic development view of the second embodiment of the magnetic transmission assembly according to the present invention. As can be seen, the magnetic transmission assembly includes a rotor 20, a stator 30 and a magnetically permeable element 70. The rotor 20 has a plurality of poles, and the poles of the rotor 20 have R pole pairs. The stator 30 is coaxial with the rotor 20 and covers it in a sleeve shape, and has a plurality of poles. The poles of the stator 30 have ST1 pole pairs. The magnetically permeable element 70 is disposed between the rotor 20 and the stator 30 and has PN1 magnetically permeable regions 72. One PN magnetically permeable region 72 corresponds to the rotor and the stator. PN1-3 ≤ R + ST1 ≤ PN1 + 3. Therefore, when R is 20, PN1 is 32, and ST1 is 12, the acceleration ratio or the reduction ratio is 1.6: 1 from the equation (1).

  Next, both ends of the magnetically permeable region 72 are fixed by two electrical insulating elements 74a and 74b as shown in FIG. Due to the arrangement of the electrical insulating elements 74 a and 74 b, the induced current generated by the magnetically permeable regions 72 that cut off the magnetic field of the rotor 20 and the stator 30 is isolated in each magnetically permeable region 72.

According to the embodiment of FIG. 9, the magnetically permeable element 70, the stator 30, and the rotor 20 are each of a hollow annular shape, so that the entire magnetic transmission assembly has a small volume and weight, and is easily attached to an electric motor. Can be incorporated. As a result, the driving power density (W / Kg or W / m ³ ) of the integrated motor increases.

  According to the above embodiment, the magnetic transmission assembly can be switched to various variable speed ratios by different embodiments of the magnetically permeable elements 40, 50, 60. Implementation of the stator 30 of FIG. 5A when the number of magnetically permeable regions 46a, 46b, 51a, 51b, 51c, 51d of the magnetically permeable elements 40, 50, 60 to be switched cannot satisfy the equations (2) and (3). A form may be adopted (equations (2) and (4) are satisfied), which can improve stability at various variable speed ratios.

Moreover, said Formula (2), (3) and (4) are relational expressions based on the fundamental wave of the stator 30, and the number of pole pairs of the stator 30 in these relational expressions is a high-order permeance harmonic. The following relational expression is obtained.
PN1-3 ≤ R + ST1 '≤ PN1 + 3 Formula (5)
PN2-3 ≤ R + ST1 '≤ PN2 + 3 Formula (6)
PN2-3 ≤ R + ST2 '≤ PN2 + 3 Formula (7)

  In these equations, ST 1 ′ and ST 2 ′ are the number of pole pairs of higher-order permeance harmonics of the stator 30. For example, if the number of pole pairs of the fundamental wave of the stator 30 is 4, the number of pole pairs of the third permeance harmonic is 12. Therefore, a wider selection range can be obtained when designing the number R of pole pairs of the rotor 20 and the numbers PN1 and PN2 of the magnetically permeable regions 46a and 46b of the magnetically permeable element 40.

  In the above relational expression, the magnetic field generated by the stator may be designed to synchronize with or not synchronize with the number R of the rotor pole pairs and the permeable regions 46a and 46b of the permeable element 40. Obviously, switching between synchronous and asynchronous is realized by controlling the number of pole pairs of the stator 30 and / or the magnetically permeable element 40.

  10A, 10B, and 10C are schematic views of a magnetically permeable element of the magnetic transmission assembly according to the fourth embodiment of the present invention, a partial cross-sectional view taken along line 10B-10B in FIG. 10A, and its operation. It is the schematic which illustrates.

  As can be seen, the magnetically permeable element 80 comprises a first ring 82 and a second ring 84. The first ring 82 includes a plurality of parallel stripes of magnetically permeable blocks 820 (also referred to as first permeable magnetic blocks) arranged in an annular shape. The second ring 84 also has a plurality of parallel stripes of magnetically permeable blocks 840 (also referred to as second magnetic permeable blocks) arranged in an annular shape. The permeable blocks 820 of the first ring 82 and the permeable blocks 840 of the second ring 84 are alternately arranged in the circumferential direction, and are sandwiched between the stator 30 and the rotor 20 (see FIG. 1). That is, the permeable block 820 of the first ring 82 and the permeable block 840 of the second ring 84 are located at the same or close radial positions as can be seen from FIG. 10B.

  10B is a partial cross-sectional view taken along line 10B-10B in FIG. 10A, and is similar to the cross-sectional relationship between FIG. 4B and FIGS. 2 and 4A. That is, FIG. 10B shows a cross-sectional view of a portion of the arc segment of FIG. 10A.

  FIG. 10B shows the state of the first ring 82 and the second ring 84 of the magnetically permeable element 80 in the first position. In the first position, the permeable blocks 820 and 840 are separated from each other by a certain distance, and the permeable blocks 820 and 840 each form a permeable region. As shown in the figure, this distance is equal, but the present invention is not limited to this. As long as an air gap is formed between each two permeable blocks 820 and 840 and the adjacent permeable blocks 820 and 840 do not function as a permeable region, the distance between the permeable blocks 820 and 840 is equal. It does not have to be.

  FIG. 10C shows the state of the first ring 82 and the second ring 84 of the magnetically permeable element 80 in the second position. In the second position, two adjacent magnetic permeable blocks 820 and 840 are adjacent to each other, and one magnetic permeable region is formed for every two adjacent magnetic permeable blocks 820 and 840. Here, “adjacent” means that the distance between two permeable blocks 820, 840 is small enough to allow adjacent permeable blocks 820, 840 to form a single permeable region. means.

  As can be seen from FIGS. 10B and 10C, the number of magnetically permeable regions formed in FIG. 10B is twice the number of magnetically permeable regions formed in FIG. 10C. Therefore, the permeable element 80 can be controlled to change the number of the permeable regions.

  An electric motor or air valve may be used as the drive element 88 (see FIG. 10A) for controlling the permeable element 80 to change the number of permeable regions thereof. The drive element 88 may be applied to the embodiments of FIGS. 1, 7A, 8, and 11A. Obviously, the drive element 88 may be changed to a fixed type and controlled by manual switching.

  11A, 11B, and 11C are schematic views of a fourth embodiment of the magnetically permeable element of the magnetic transmission assembly according to the present invention, a partial sectional view taken along line 11B-11B in FIG. It is the schematic which illustrates. Since these figures are similar to FIGS. 10A, 10B, and 10C, detailed description thereof is omitted.

  As can be seen, the fourth embodiment of the magnetically permeable element 80 comprises a first ring 92, a second ring 94 and a third ring 96. The first ring 92, the second ring 94, and the third ring 96 each have a plurality of magnetically permeable blocks 920, 940, and 960 (also referred to as first, second, and third permeable blocks). The first magnetic permeable block 920, the second magnetic permeable block 940, and the third magnetic permeable block 960 are sequentially arranged in the circumferential direction and are sandwiched between the stator 30 and the rotor 20. Magnetically permeable blocks 920, 940, 960 are located at the same or close radial positions (ie, approximately equidistant from the center of the circle). Accordingly, when the first ring 92, the second ring 94, and the third ring 96 are located at the first position of FIG. 11B, the magnetically permeable blocks 920, 940, and 960 form independent permeable regions, respectively. Element 90 has PN1 permeable regions. When the first ring 92, the second ring 94, and the third ring 96 are located at the second position of FIG. 11C, the three adjacent permeable blocks 920, 940, 960 are adjacent to each other to form one permeable region. Therefore, the magnetically permeable element 90 has PN2 magnetically permeable regions. Therefore, the number PN1 of magnetically permeable regions formed by the magnetically permeable elements 90 at the first position is three times the number PN2 of magnetically permeable regions formed at the second position.

FIG. 11D is a schematic view of the first ring 92, the second ring 94, and the third ring 96 in the third position. As can be seen, the magnetic permeable block 960 of the third ring 96 and the magnetic permeable block 940 of the second ring 94 are adjacent to each other, and the magnetic permeable block 920 of the first ring 92 is the second and third magnetic permeable blocks 940 and 960. Is not adjacent (or close to or in contact with). Therefore, since the adjacent magnetic permeable blocks 940 and 960 form one magnetic permeable region, and the first magnetic permeable block 920 independently forms a magnetic permeable region, the permeable element 90 includes three PN magnetic permeable regions. Have. Therefore, the number PN3 of the permeable regions formed in FIG. 11D is twice the number PN2 of the permeable regions formed in FIG. 11C. Here, PN3 satisfies the following formula (8).
PN3-3 ≦ R + ST1 ≦ PN3 + 3 Formula (8)

  The purpose of power transmission is to arrange the relative positions of the first ring 92, the second ring 94, and the third ring 96 at non-equal distances so that the arc length occupied by the magnetically permeable region and the arc length occupied by the magnetic gap are It can be achieved by not being the same. However, the transmitted torque changes.

Regarding the relationship between m and k in the above formula (1), m = k = 1 may be employed in addition to m = −k = 1. In this case, it is necessary to adjust the relational expression among the number ST1 of pole pairs of the stator 30, the number R of pole pairs of the rotor 20, and the numbers PN1 and PN2 of the permeable regions 46a and 46b of the permeable element 40. is there. When the number R of pole pairs of the rotor 20 is larger than the number ST1 of pole pairs of the stator 30, the relational expression is as follows.
R-3 ≦ PN1 + ST1 ≦ R + 3 Formula (9)
R-3 ≦ PN2 + ST1 ≦ R + 3 Formula (10)
R-3 ≦ PN3 + ST1 ≦ R + 3 Formula (11)
PN3-3 ≤ R + ST1 ≤ PN3 + 3, or R-3 ≤ PN3 + ST1 ≤ R + 3, or ST1-3 ≤ PN3 + R ≤ ST1 + 3.

When the number R of pole pairs of the rotor 20 is smaller than the number ST1 of pole pairs of the stator 30, the relational expression is as follows.
ST1-3 ≤ PN1 + R ≤ ST1 + 3 Formula (12)
ST1-3 ≦ PN2 + R ≦ ST1 + 3 Formula (13)
ST1-3 ≦ PN3 + R ≦ ST1 + 3 Formula (14)

  The numbers ST1 and ST2 of the stator pole pairs in the above formulas (9) to (14) may replace the number ST1 ′ or ST2 ′ of the pole pairs of higher-order permeance harmonics (ie, the formulas (5) to (5)). (ST1 and ST2 in (7) are replaced with ST1 ′ and ST2 ′).

  Finally, application of the magnetic transmission assembly according to the present invention to a phase separation or electromagnetic variable speed motor will be described below. The variable speed ratio obtained by the phase separation motor is larger than 1, and the variable speed ratio obtained by the electromagnetic variable speed motor is larger or smaller than 1.

  Referring to FIG. 12, as can be seen from the figure, the stator 30 is disposed radially inside the rotor 20, and the magnetically permeable element 99 is disposed between the stator 30 and the rotor 20. The stator 30 has a winding arm 300, and as can be seen from the figure, the stator 30 has a total of 12 winding arms 300. When a conventional phase separation or electromagnetic variable speed motor is used, it is necessary to refer to a winding chart (or a phase separation winding chart) as shown in the following table. However, this winding chart is not intended to limit the scope of the present invention.

  When the winding chart is applied to a structure without the magnetically permeable element 99 according to the present invention (a structure obtained by removing the magnetically permeable element 99 from FIG. 12), the winding mode and variable speed ratio required by the winding arm 300 of the stator 30 And is obtained. A, B, and C shown in this table represent the first phase winding mode, the second phase winding mode, and the third phase winding mode, respectively, and a, b, and c are respectively the winding mode and the second phase that are opposite to the first phase. And a winding mode opposite to that of the third phase. In the structure not using the magnetically permeable element 99, when the number of magnetic poles of the rotor is 4, the number of winding arms 300 of the stator 30 is 9, and the ABaCAcBCb winding mode is used, the reduction ratio 2: 1 is can get.

  Here, each character of ABaCAcBCb represents a winding mode of the winding arm 300, and is configured clockwise or counterclockwise depending on the winding arm of the stator 30. Taking the ABaCAcBCb winding mode as an example, the first winding arm 300 adopts the first phase winding mode (A), the second winding arm 300 uses the second phase winding mode, and the third winding arm 300 uses the first phase. In the reverse winding mode (a), the fourth winding arm 300 adopts the third phase winding mode (C), and so on. The first, second, third, and fourth winding arms 300 are adjacent to the stator 30 in order clockwise.

Referring back to the application of FIG. 12, the stator 30 has 12 winding arms 300. Each winding arm 300 is independently coiled, and when adjacent winding arms 300 are wound with coils of different phases, the stator 30 has twelve magnetic poles. That is, the number of pole pairs ST1 of the stator 30 is 6 (the number of magnetic poles is twice the number of pole pairs). The number R of pole pairs of the rotor 20 is 10 (that is, the number of magnetic poles is 20). The number PN1 of the permeable regions of the permeable element 99 is eight. Therefore, it can be seen from the following formula (15) that the number R2 of the stator side pole pairs in the gap 990 between the magnetically permeable element 99 and the stator 30 is 2. Therefore, the number of stator side magnetic poles is four.
R2 = | R-PN1 | Equation (15)

  Next, when the winding chart is examined using the fact that the number of stator side magnetic poles is 4 and the number of magnetic poles of the stator winding arm 300 is 12, it is found that the winding mode is AcBaCbAcBaCb. Therefore, a reduction ratio of 2: 1 is obtained between the magnetically permeable element 99 and the stator 30. The reduction ratio between the rotor 20 and the magnetically permeable element 99 is 5 (R / R2 = 10/2 = 5). Therefore, the total reduction ratio of the phase separation motor in FIG. 12 is 10: 1 (= 2: 1 × 5: 1).

  Further, if two adjacent winding arms 300 of the stator 30 are considered as one winding arm around which coils of the same phase are wound, the stator 30 has six magnetic poles, and variability increases.

  In addition, when the magnetically permeable element 99 is driven so that the number of the permeable regions changes to 6 (PN2), the number of stator side pole pairs is 4 (from the equation (15)). When used, the number of magnetic poles is 8, and a different reduction ratio is generated.

Further, the formula (15) for calculating the number of stator side pole pairs may be changed to the following formula (16).
R2 = R + PN1 formula (16)

  The stator coil of the motor can be driven (or actuated) with an AC current like a synchronous motor, or driven by a square or sine wave generated by pulse width modulation (PWM) like a brushless AC motor. May be.

  Based on the above, the magnetic transmission assembly of the above embodiment includes a configuration of a stator and a rotor of an electric motor or a generator, and has a configuration of a transmission structure. It is easily integrated with a generator circuit (eg, rectification, voltage regulation, etc.) to form a variable speed electric motor or variable speed generator. This integrated variable speed electric motor has both the function of generating rotational power and the function of variable speed transmission, but its volume and weight are almost the same as the original volume and weight of the electric motor, so high drive Power density is realized. On the other hand, the magnetic transmission assembly employs electromagnetic transmission to reduce vibration and noise levels. When applied to an electric vehicle, the variable speed electric motor can satisfy various torque and travel speed requirements while maintaining high performance operation.

  The foregoing descriptions of exemplary embodiments of the present invention are provided for purposes of illustration only and are not intended to be exhaustive or to limit the invention to the particular forms disclosed. Many modifications and variations are possible from the above disclosure.

  While the above embodiments have been selected and described in order to explain the principles of the invention and its practical application so that those skilled in the art can utilize the present disclosure and embodiments, various modifications suitable for particular applications have been conceived. it can. Other embodiments within the spirit and scope of the invention will be apparent to those skilled in the art. Accordingly, the scope of the invention is defined by the appended claims rather than the foregoing description and the disclosed exemplary embodiments.

20 Rotor 30 Stator 40 Magnetic Conductive Element 42 First Ring 44 Second Ring 46a, 46b Magnetic Permeability Region 420, 422, 440, 442, 820, 840 Magnetic Permeability Block

Claims (22)

A rotor having a plurality of poles;
A stator having a plurality of poles and coaxial with the rotor and covering the rotor like a sleeve;
A magnetically conductive element disposed between the rotor and the stator and having a plurality of magnetically permeable regions;
The plurality of poles of the rotor have R pole pairs, the plurality of poles of the stator have ST1 pole pairs;
When the magnetic conducting element is driven, the magnetic conducting element selectively allows PN1 or PN2 permeable regions to correspond to the rotor and the stator, R-3 ≦ PN1 + ST1 ≦ R + 3 or A magnetic transmission assembly that satisfies ST1-3 ≦ PN1 + R ≦ ST1 + 3.   The magnetic transmission assembly according to claim 1, wherein PN2-3 ≦ R + ST1 ≦ PN2 + 3, or R-3 ≦ PN2 + ST1 ≦ R + 3, or ST1-3 ≦ PN2 + R ≦ ST1 + 3 is satisfied.   The magnetic conductive element includes a first ring and a second ring, the first ring and the second ring are axially connected, the first ring has PN1 permeable blocks, and the second ring The ring has two PN magnetic permeable blocks, and when the magnetic conductive element is driven in the axial direction, the magnetic conductive element is selectively connected to the first ring or the second ring by the rotor and the stator. The magnetic transmission assembly of claim 1, wherein the magnetic transmission assembly is capable of moving to a position between.   The magnetic conductive element includes a first ring and a second ring, the first ring being disposed radially outward of the second ring, wherein the first ring and the second ring are the stator and the rotor. When the magnetic conducting element is driven, the first ring and the second ring move relative to each other between the first position and the second position, and the first ring and the second ring When the ring is in the first position, the magnetic conducting element has PN1 permeable regions, and when the first ring and the second ring are in the second position, the magnetic conducting element is The magnetic transmission assembly of claim 1, wherein the magnetic transmission assembly has two PN magnetically permeable regions.   The first ring has a plurality of first permeable blocks, the second ring has a plurality of second permeable blocks, and the first ring and the second ring are positioned at the first position. The two adjacent ones of the plurality of first permeable blocks and the plurality of second permeable blocks form one of the PN1 permeable regions, and the first ring and the second permeable block 5. The plurality of first permeable blocks and the plurality of second permeable blocks each form one of the PN2 permeable regions when a ring is positioned in the second position. Magnetic transmission assembly.   The magnetic transmission assembly of claim 1, wherein the stator includes a plurality of induction coils, and each induction coil forms a pole when energized.   7. The magnetic transmission assembly according to claim 6, wherein the stator further includes a pole modulation circuit, and the pole modulation circuit selectively switches the plurality of induction coils to ST1 pole pairs and ST2 pole pairs. .   The stator further includes a plurality of bumps arranged in an annular shape, and the plurality of induction coils are wound around the bumps, and when the plurality of induction coils are switched to the ST1 pole pair, adjacent induction coils Have opposite polarities, and when the induction coils are switched to the ST2 pole pairs, the induction coils are grouped into a plurality of coil groups, and adjacent coil groups have opposite polarities. 8. A magnetic transmission assembly according to claim 7, comprising:   The magnetic transmission assembly according to claim 8, wherein PN2-3 ≦ R + ST2 ≦ PN2 + 3 is satisfied.   9. The magnetic transmission assembly according to claim 8, wherein each of the coil groups is composed of three adjacent induction coils in order.   The magnetic conductive element includes a first ring and a second ring, the first ring and the second ring are axially connected, the first ring has PN1 permeable blocks, and the second ring The ring has two PN magnetic permeable blocks, and when the magnetic conductive element is driven in the axial direction, the magnetic conductive element is selectively connected to the first ring or the second ring by the rotor and the stator. The magnetic transmission assembly of claim 8, wherein the magnetic transmission assembly is enabled to move to a position between.   The magnetic conductive element includes a first ring and a second ring, the first ring and the second ring are in radial contact and are sandwiched between the stator and the rotor, and the magnetic conductive element is driven. The first ring and the second ring move relative to each other between the first position and the second position, and when the first ring and the second ring are located at the first position, 9. The magnetically conductive element has PN1 permeable regions, and when the first ring and the second ring are located at the second position, the magnetically conductive element has PN2 permeable regions. The magnetic transmission assembly as described.   The magnetic conductive element includes a first ring and a second ring, the first ring having a plurality of first permeable blocks arranged in an annular shape, and the second ring having a plurality of first permeable blocks arranged in an annular shape. The first magnetic permeable block and the second magnetic permeable block are alternately arranged in the circumferential direction, and are sandwiched between the stator and the rotor so that the magnetic conductive element is driven. The first ring and the second ring move relative to each other between the first position and the second position, and when the first ring and the second ring are located at the first position, Two adjacent ones of the plurality of first permeable blocks and the plurality of second permeable blocks form one of the PN1 permeable regions, and the first ring and the second ring When positioned in the second position, the plurality of first magnetic permeable blocks and the plurality of second magnetic permeable blocks are respectively Magnetic transmission assembly according to claim 1 which forms one of the PN2 one magnetically permeable region.   The magnetic conductive element includes a first ring, a second ring, and a third ring. The first ring has a plurality of first magnetic permeable blocks arranged in an annular shape, and the second ring is arranged in an annular shape. A plurality of second magnetic permeable blocks, and the third ring has a plurality of third magnetic permeable blocks arranged in an annular shape, the first magnetic permeable block, the second magnetic permeable block, and the third Magnetically permeable blocks are alternately arranged in the circumferential direction, sandwiched between the stator and the rotor, and when the magnetic conducting element is driven, the first ring, the second ring, and the third ring Move relatively between the first position, the second position and the third position, and when the first ring, the second ring and the third ring are located in the first position, the plurality of first 3 adjacent to each other among the magnetic permeability block, the plurality of second magnetic permeability blocks, and the plurality of third magnetic permeability blocks. Forms one of the PN1 magnetically permeable regions, and when the first ring, the second ring, and the third ring are located in the second position, the plurality of first permeable blocks and the The plurality of second permeable blocks and the plurality of third permeable blocks each form one of the PN2 permeable regions, and the first ring, the second ring, and the third ring are the first permeable block. When positioned at the third position, each adjacent two of the plurality of second magnetic permeable blocks and the plurality of third magnetic permeable blocks form one of the PN3 magnetic permeable regions, Each of the first magnetic permeable blocks forms one of the PN3 magnetic permeable regions, and satisfies PN3-3 ≦ R + ST1 ≦ PN3 + 3, or R-3 ≦ PN3 + ST1 ≦ R + 3, or ST1-3 ≦ PN3 + R ≦ ST1 + 3. Item 2. The magnetic transmission assembly according to Item 1.   The magnetic transmission assembly of claim 1, wherein the material of the magnetic conductive element is a soft magnetic composite material (SMC). A rotor having a plurality of poles;
A stator having a plurality of poles and coaxial with the rotor and covering the rotor like a sleeve;
A magnetically conductive element disposed between the rotor and the stator and having a plurality of magnetically permeable regions;
The plurality of poles of the rotor have R pole pairs, the plurality of poles of the stator have ST1 pole pairs and ST1 ′ higher permeance harmonic pole pairs;
When the magnetic conducting element is driven, the magnetic conducting element selectively allows PN1 or PN2 permeable regions to correspond to the rotor and the stator, PN1-3 ≦ R + ST1 ′ ≦ PN1 + 3 Or R-3 ≦ PN1 + ST1 ′ ≦ R + 3, or ST1′-3 ≦ PN1 + R ≦ ST1 ′ + 3.   17. The magnetic transmission assembly according to claim 16, wherein PN2-3 ≦ R + ST1 ′ ≦ PN2 + 3, or R-3 ≦ PN2 + ST1 ′ ≦ R + 3, or ST1′-3 ≦ PN2 + R ≦ ST1 ′ + 3 is satisfied.   The magnetic conductive element includes a first ring and a second ring, the first ring and the second ring are axially connected, the first ring has PN1 permeable blocks, and the second ring The ring has two PN magnetic permeable blocks, and when the magnetic conductive element is driven in the axial direction, the magnetic conductive element is selectively connected to the first ring or the second ring by the rotor and the stator. The magnetic transmission assembly of claim 16, wherein the magnetic transmission assembly is enabled to move to a position between.   The magnetic conductive element includes a first ring and a second ring, the first ring being disposed radially outward of the second ring, wherein the first ring and the second ring are the stator and the rotor. When the magnetic conducting element is driven, the first ring and the second ring move relative to each other between the first position and the second position, and the first ring and the second ring When the ring is in the first position, the magnetic conducting element has PN1 permeable regions, and when the first ring and the second ring are in the second position, the magnetic conducting element is The magnetic transmission assembly of claim 16 having two PN magnetically permeable regions.   The first ring has a plurality of first permeable blocks, the second ring has a plurality of second permeable blocks, and the first ring and the second ring are positioned at the first position. The two adjacent ones of the plurality of first permeable blocks and the plurality of second permeable blocks form one of the PN1 permeable regions, and the first ring and the second permeable block 20. The plurality of first permeable blocks and the plurality of second permeable blocks each form one of the PN2 permeable regions when a ring is located in the second position. Magnetic transmission assembly. A rotor having a plurality of poles;
A stator having a plurality of poles and coaxial with the rotor and covering the rotor like a sleeve;
A magnetically conductive element disposed between the rotor and the stator and having PN1 permeable blocks;
The plurality of poles of the rotor have R pole pairs, the plurality of poles of the stator have ST1 pole pairs;
The magnetic permeable block corresponds to the rotor and the stator, and forms R2 stator side pole pairs, and R2 = | R-PN1 | or R2 = R + PN1 is established, and R2 and ST1 are phase-separated windings. A phase separation motor that fills the chart. A rotor having a plurality of poles;
A stator having a plurality of poles and coaxial with the rotor and covering the rotor like a sleeve;
A magnetic conducting element disposed between the rotor and the stator and having PN1 permeable regions;
The plurality of poles of the rotor have R pole pairs, the plurality of poles of the stator have ST1 pole pairs;
The PN1 magnetically permeable region corresponds to the rotor and the stator, and satisfies R-3 ≦ PN1 + ST1 ≦ R + 3 or ST1-3 ≦ PN1 + R ≦ ST1 + 3.

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