Leakage flux adjusting type built-in permanent magnet synchronous motor

Abstract

The invention relates to the technical field of built-in permanent magnet synchronous motors, and discloses a leakage flux adjusting type built-in permanent magnet synchronous motor which comprises a machine shell, a stator and a rotor, a permanent magnet is fixedly installed in the rotor, and a plurality of permanent magnet units in the permanent magnet are distributed in the radial direction. A magnetic flux control ring is arranged on one side, close to one end of the center of the rotor, of each permanent magnet unit, and the magnetic flux control rings are rotationally mounted in the rotor; according to the leakage magnetic flux adjusting type built-in permanent magnet synchronous motor, the magnetic flux control ring formed by combining the magnetic flux part and the magnetic isolation part is arranged in the rotor, and the relative positions of the magnetic flux part and the magnetic isolation part and the permanent magnet units in the permanent magnet are adjusted by rotating the magnetic flux control ring; the leakage flux of one end, close to the center of the rotor, of each permanent magnet unit in the permanent magnet can be adjusted, then the working flux of the permanent magnet is adjusted, continuous current connection for weakening the flux of the permanent magnet in a current magnetizing mode is not needed, and copper loss in the motor is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of built-in permanent magnet synchronous motors, in particular to a built-in permanent magnet synchronous motor with adjustable magnetic flux leakage. BACKGROUND

[0002] The permanent magnet synchronous motor is a motor working through electromagnetic induction principle and mainly composed of a stator, a rotor and end covers, etc. The permanent magnet synchronous motor provides excitation by a permanent magnet and does not need excitation current, so that excitation loss is avoided, the reliability and operation efficiency of the motor are improved, and the built-in permanent magnet synchronous motor is provided with a permanent magnet in the rotor and can protect the permanent magnet by the structure of the outer layer of the rotor.

[0003] When the built-in permanent magnet synchronous motor operates at high speed and constant power, the working magnetic flux of the permanent magnet entering the stator needs to be reduced. The existing built-in permanent magnet synchronous motor reduces the magnetic flux of the permanent magnet by current magnetization. The greater the current required for current magnetization, the greater the copper loss in the motor, which reduces the service life of the permanent magnet synchronous motor and affects the operation efficiency of the permanent magnet synchronous motor. SUMMARY

[0004] To solve the problem that the existing built-in permanent magnet synchronous motor reduces the magnetic flux of the permanent magnet by current magnetization, the greater the current required for current magnetization, the greater the copper loss in the motor, which reduces the service life of the permanent magnet synchronous motor and affects the operation efficiency of the permanent magnet synchronous motor, the application realizes the technical scheme as follows: a built-in permanent magnet synchronous motor with adjustable magnetic flux leakage, comprising a shell, a stator and a rotor, the stator is composed of an iron core and three-phase windings, a permanent magnet is fixedly installed in the inside of the rotor, after the three-phase windings in the stator are supplied with current, a rotating magnetic field is generated, the rotating magnetic field generated by the permanent magnet is rotated under the action of electromagnetic force and drives the rotor to rotate together, a plurality of permanent magnet units in the permanent magnet are distributed in a radial direction, a magnetic flux control ring is arranged on one side of the permanent magnet unit close to the center of the rotor, and the magnetic flux control ring is rotatably installed in the inside of the rotor. The magnetic flux control ring is composed of a plurality of magnetic flux passing parts and a plurality of magnetic flux shielding parts, the magnetic flux passing part is a magnetic flux passing material, the magnetic flux shielding part is a magnetic flux shielding material, the magnetic flux passing part and the magnetic flux shielding part are alternately distributed, the magnetic flux passing part and the magnetic flux shielding part are both circular arc surface structures and are combined to form a ring shape, when the magnetic flux shielding part is located in the radial direction of the permanent magnet unit, the magnetic flux shielding part prevents the magnetic flux short circuit of the permanent magnet unit close to the center of the rotor, at this time, the magnetic flux shielding part plays a role of magnetic flux shielding and prevents the magnetic flux short circuit, and the magnetic flux leakage is reduced, when the magnetic flux passing part is located in the radial direction of the permanent magnet unit, the magnetic flux passing part plays a role of magnetic flux passing, and the magnetic flux leakage is increased.

[0005] Further, the magnetic flux passing part and the magnetic flux isolation part are the same as the number of the permanent magnet units, the central angle of the circular arc surface of the magnetic flux passing part is not less than twice of the central angle of the circular arc surface of the magnetic flux isolation part, and when the magnetic flux passing part is located in the radial direction of the permanent magnet unit, the distribution design of the magnetic flux passing part and the magnetic flux isolation part can increase the magnetic flux leakage of the permanent magnet unit close to one end of the rotor center.

[0006] Further, the inner ring of the magnetic flux control ring is provided with a magnetic flux isolation ring, the magnetic flux isolation ring is made of magnetic flux isolation material, the magnetic flux isolation ring is fixedly connected with the rotor, and the inner part of the magnetic flux isolation ring is fixedly installed with a rotating shaft. When the magnetic flux isolation part is located in the radial direction of the permanent magnet unit, the design of the magnetic flux isolation ring can improve the magnetic flux isolation effect of the permanent magnet unit close to one end of the rotor center and reduce the magnetic flux leakage.

[0007] Further, a plurality of cavities are formed in the rotor, the plurality of cavities are a group and are distributed in a ring shape, the cavities are communicated with the outer ring surface of the magnetic flux control ring, the plurality of cavities are respectively distributed between adjacent two permanent magnet units, the number of the cavities in the rotor is not less than one group, and the width of the cavity in the axial direction is not more than one tenth of the length of the rotor in the axial direction, so as to reduce the influence of the magnetic flux generated by the permanent magnet. The inner surface of the magnetic flux passing part is made of magnetic material, and when the adjusting winding is in a conducting state, the magnetic flux between the adjusting winding and the magnetic flux passing part can drive the magnetic flux control ring to rotate. The surface of the cavity is provided with a magnetic flux isolation layer made of magnetic flux isolation material, which is used to reduce the magnetic flux leakage between the permanent magnet and the adjusting winding.

[0008] Further, an axial magnetic flux slot is formed in the rotor, and the magnetic flux slot is located at one end of the permanent magnet unit away from the magnetic flux control ring. A magnetic flux isolation assembly is installed in the magnetic flux slot, which controls the magnetic flux leakage of the adjusting permanent magnet unit away from the magnetic flux control ring, and the magnetic flux isolation assembly comprises: A plurality of magnetic flux isolation plates made of magnetic flux isolation material, two magnetic flux isolation plates are a group, the two magnetic flux isolation plates in the same group are foldably connected, two groups of magnetic flux isolation plates are symmetrically distributed and form a magnetic flux isolation unit, the two magnetic flux isolation plates in the same group are folded away from the other group of magnetic flux isolation plates along the folding connection position in the middle, the two groups of magnetic flux isolation plates in the same magnetic flux isolation unit are radially distributed, and the two ends of the two groups of magnetic flux isolation plates in the same magnetic flux isolation unit are rotatably installed on the surface of the connecting block, and the connecting block is slidably installed in the inner wall of the magnetic flux slot in the width direction of the magnetic flux slot. The magnetic flux isolation assembly comprises a plurality of magnetic flux isolation units, and the plurality of magnetic flux isolation units are sequentially distributed in the width direction of the magnetic flux slot. When the magnetic isolation plates in the magnetic isolation assembly are distributed along the radial direction of the rotor, that is, the magnetic isolation plates in the plurality of magnetic isolation units are completely folded together, the folded portions of the two magnetic isolation plates in the same group are in contact with the inner surface of the magnetic flux slot, at this time the magnetic isolation assembly plays a role of magnetic isolation, preventing magnetic flux short circuit, reducing the leakage magnetic flux at the end of the permanent magnet unit away from the magnetic flux control ring, and when the magnetic isolation plates in the plurality of magnetic isolation units are completely unfolded along the direction perpendicular to the radial direction, the upper and lower sides of the magnetic isolation plates form a magnetic flux channel, at this time the magnetic flux slot plays a role of magnetic conduction, there is a magnetic flux short circuit at the end of the permanent magnet unit away from the magnetic flux control ring, and the leakage magnetic flux increases.

[0009] Further, the inner sides of the two side walls in the width direction of the magnetic flux slot are each provided with an electromagnetic telescopic rod, and the telescopic end of the electromagnetic telescopic rod is fixedly connected with the connecting block.

[0010] Compared with the prior art, the present application has the following beneficial effects: 1. The leakage magnetic flux adjusting built-in permanent magnet synchronous motor adjusts the leakage magnetic flux at the end of the permanent magnet unit close to the center of the rotor, and further adjusts the working magnetic flux of the permanent magnet, without the need to continuously connect the current to weaken the magnetic flux of the permanent magnet by using current magnetization, thereby avoiding copper loss in the motor and being beneficial to prolonging the service life of the motor and improving the operating efficiency of the motor.

[0011] 2. The leakage magnetic flux adjusting built-in permanent magnet synchronous motor adjusts the leakage magnetic flux at the end of the permanent magnet unit close to the center of the rotor, and further adjusts the working magnetic flux of the permanent magnet, without the need to continuously connect the current to weaken the magnetic flux of the permanent magnet by using current magnetization, thereby avoiding copper loss in the motor and being beneficial to prolonging the service life of the motor and improving the operating efficiency of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the internal structure of the built-in permanent magnet synchronous motor of the present application; Figure 2 It is a schematic view of the magnetic flux direction of the permanent magnet in the rotor of the present application; Figure 3 It is a schematic view of the relative position structure of the magnetic flux control ring and the magnetic isolation assembly and the permanent magnet in the rotor of the present application Figure 1 ; Figure 4 It is a schematic view of the relative position structure of the magnetic flux control ring and the magnetic isolation assembly and the permanent magnet in the rotor of the present application Figure 2 ; Figure 5The schematic diagram of the relative distribution structure of the rotor internal regulating winding and the magnetic flux control ring of the application is shown in the figure. Figure 6 The three-dimensional view of the magnetic isolation assembly structure of the application is shown in the figure. Figure 7 The schematic diagram of the distribution structure of the magnetic isolation plate in the magnetic flux slot internal magnetic isolation assembly of the application is shown in the figure. Figure 8 The schematic diagram of the position state change of the magnetic isolation plate in the magnetic isolation assembly of the application is shown in the figure.

[0013] In the figure: 1, the shell; 2, the stator; 3, the rotor; 31, the magnetic flux slot; 4, the permanent magnet; 5, the magnetic isolation ring; 6, the magnetic flux control ring; 61, the magnetic flux part; 62, the magnetic isolation part; 7, the cavity; 71, the regulating winding; 8, the magnetic isolation layer; 9, the magnetic isolation assembly; 91, the magnetic isolation plate; 92, the connecting block; 10, the electromagnetic telescopic rod; 11, the rotating shaft. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0015] The implementation of the magnetic flux leakage regulating built-in permanent magnet synchronous motor is as follows: Please refer to Figures 1-8 A magnetic flux leakage regulating built-in permanent magnet synchronous motor, comprising a shell 1, a stator 2 and a rotor 3, the stator 2 is composed of a core and a three-phase winding, the rotor 3 is internally fixedly installed with a permanent magnet 4, the three-phase winding in the stator 2 generates a rotating magnetic field after current is passed through, the rotating magnetic field generated by the permanent magnet 4 is rotated under the action of electromagnetic force, and the rotor 3 is driven to rotate together, and a plurality of permanent magnet units in the permanent magnet 4 are distributed in a radial direction.

[0016] A magnetic flux control ring 6 is arranged on one side of the permanent magnet unit close to the center of the rotor 3, the magnetic flux control ring 6 is rotatably installed in the interior of the rotor 3, a magnetic isolation ring 5 is arranged in the inner ring of the magnetic flux control ring 6, the magnetic isolation ring 5 is made of magnetic isolation material, the magnetic isolation ring 5 is fixedly connected with the rotor 3, a rotating shaft 11 is fixedly installed in the interior of the magnetic isolation ring 5, and the rotating shaft 11 is driven to rotate together when the rotor 3 rotates.

[0017] The magnetic flux control ring 6 is composed of a plurality of magnetic flux passing parts 61 and a plurality of magnetic flux blocking parts 62. The magnetic flux passing part 61 is a magnetic flux passing material, and the magnetic flux blocking part 62 is a magnetic flux blocking material. The magnetic flux passing part 61 and the magnetic flux blocking part 62 are alternately distributed. Both the magnetic flux passing part 61 and the magnetic flux blocking part 62 are circular arc surface structures and are combined to form a ring shape. The number of the magnetic flux passing part 61 and the magnetic flux blocking part 62 is the same as that of the permanent magnet unit. The central angle of the circular arc surface of the magnetic flux passing part 61 is not less than twice the central angle of the circular arc surface of the magnetic flux blocking part 62. When the magnetic flux passing part 61 is located in the radial direction of the permanent magnet unit, the distribution design of the magnetic flux passing part 61 and the magnetic flux blocking part 62 can increase the magnetic flux leakage of the permanent magnet unit close to one end of the rotor 3 center.

[0018] When the magnetic flux blocking part 62 is located in the radial direction of the permanent magnet unit, the magnetic flux blocking part 62 prevents the magnetic flux short circuit of the permanent magnet unit close to one end of the rotor 3 center. At this time, the magnetic flux blocking part 62 plays a role of magnetic flux blocking to prevent the magnetic flux short circuit and reduce the magnetic flux leakage. When the magnetic flux blocking part 62 is located in the radial direction of the permanent magnet unit, the design of the magnetic flux blocking ring 5 can improve the magnetic flux blocking effect of the permanent magnet unit close to one end of the rotor 3 center and reduce the magnetic flux leakage. When the magnetic flux passing part 61 is located in the radial direction of the permanent magnet unit, there is a magnetic flux short circuit of the permanent magnet unit close to one end of the rotor 3 center. At this time, the magnetic flux passing part 61 plays a role of magnetic flux passing to increase the magnetic flux leakage.

[0019] A plurality of cavities 7 are arranged in the rotor 3. The plurality of cavities 7 are arranged in a ring shape and are in communication with the outer ring surface of the magnetic flux control ring 6. The plurality of cavities 7 are arranged between adjacent permanent magnet units. The number of the cavities 7 in the rotor 3 is not less than one group. The width of the cavity 7 in the axial direction is not more than one tenth of the length of the rotor 3 in the axial direction, so as to reduce the influence of the magnetic flux generated by the permanent magnet 4.

[0020] An adjusting winding 71 is arranged in the cavity 7. The inner ring surface of the magnetic flux passing part 61 is a magnetic material. When the adjusting winding 71 is in a conducting state, the magnetic flux between the adjusting winding 71 and the magnetic flux passing part 61 can drive the magnetic flux control ring 6 to rotate. A magnetic flux blocking layer 8 is arranged on the surface of the cavity 7. The magnetic flux blocking layer 8 is a magnetic flux blocking material and is used to reduce the magnetic flux leakage between the permanent magnet 4 and the adjusting winding 71.

[0021] An axial magnetic flux slot 31 is arranged in the rotor 3. The magnetic flux slot 31 is located at one end of the permanent magnet unit away from the magnetic flux control ring 6. A magnetic flux blocking assembly 9 is arranged in the magnetic flux slot 31. The magnetic flux blocking assembly 9 is used to control the magnetic flux leakage of the permanent magnet unit away from the magnetic flux control ring 6. The magnetic flux blocking assembly 9 includes a plurality of magnetic flux blocking plates 91.

[0022] The magnetic isolation plates 91 are made of magnetic isolation material. Two magnetic isolation plates 91 form a group. The two magnetic isolation plates 91 in the same group are connected by folding. Two groups of magnetic isolation plates 91 are symmetrically distributed and form a magnetic isolation unit. The two magnetic isolation plates 91 in the same group are folded away from the other group of magnetic isolation plates 91 in the magnetic isolation unit along the folding position in the middle. The two groups of magnetic isolation plates 91 in the same magnetic isolation unit are distributed radially. The two ends of the two groups of magnetic isolation plates 91 in the same magnetic isolation unit are rotatably installed on the surface of the connecting block 92. The connecting block 92 is slidably installed in the inner wall of the magnetic flux slot 31 along the width direction of the magnetic flux slot 31. The inner walls of the two side walls of the magnetic flux slot 31 in the width direction are provided with the electromagnetic telescopic rods 10. The telescopic ends of the electromagnetic telescopic rods 10 are fixedly connected with the connecting block 92.

[0023] The magnetic isolation assembly 9 includes a plurality of magnetic isolation units. The magnetic isolation plates 91 in the plurality of magnetic isolation units are sequentially distributed along the width direction of the magnetic flux slot 31. When the magnetic isolation plates 91 in the plurality of magnetic isolation units are completely folded together along the radial direction of the rotor 3, the folded portions of the two magnetic isolation plates 91 in the same group are in contact with the inner surface of the magnetic flux slot 31. At this time, the magnetic isolation assembly 9 plays a role of magnetic isolation, prevents magnetic flux short circuit, and reduces the leakage magnetic flux away from the magnetic flux control ring 6 of the permanent magnet unit. When the magnetic isolation plates 91 in the plurality of magnetic isolation units are completely unfolded along the direction perpendicular to the radial direction, the magnetic flux channels are formed on the upper and lower sides of the magnetic isolation plates 91. At this time, the magnetic flux slot 31 plays a role of magnetic flux transmission. The magnetic flux short circuit exists at the end of the permanent magnet unit away from the magnetic flux control ring 6, and the leakage magnetic flux increases.

[0024] Working principle of leakage magnetic flux adjustment of the built-in permanent magnet synchronous motor: The permanent magnets 4 in the built-in permanent magnet synchronous motor are arranged in a radial distribution manner. The main magnetic flux generated by the permanent magnets 4 includes the working magnetic flux entering the stator 2 through the air gap between the stator 2 and the rotor 3 and the leakage magnetic flux directly forming a magnetic circuit at the two ends of the permanent magnet unit. The larger the leakage magnetic flux at the two ends of the permanent magnet unit, the smaller the working magnetic flux. By adjusting the leakage magnetic flux, the motor can run at a high speed and constant power. The smaller the leakage magnetic flux at the two ends of the permanent magnet unit, the larger the working magnetic flux. In this state, the motor is suitable for running at a low speed and constant torque.

[0025] Reference Figure 2 , Figure 3 and Figure 5When the regulating winding 71 is supplied with current, the regulating winding 71 generates a rotating magnetic field and generates electromagnetic force on the magnetic flux passing part 61 to drive the magnetic flux control ring 6 to rotate. When the magnetic flux blocking part 62 rotates close to the direction of the permanent magnet unit until it rotates to the radial direction of the permanent magnet unit, the magnetic flux blocking part 62 prevents the magnetic flux close to the one end of the rotor 3 center from short circuiting. At this time, the magnetic flux blocking part 62 plays a role of magnetic flux blocking to prevent magnetic flux short circuiting, reduce leakage magnetic flux, and increase corresponding working magnetic flux. When the magnetic flux passing part 61 rotates close to the direction of the permanent magnet unit until it rotates to the radial direction of the permanent magnet unit, the magnetic flux passing part 61 plays a role of magnetic flux passing to increase leakage magnetic flux, and reduce corresponding working magnetic flux.

[0026] Reference Figure 7 and Figure 8 When the electromagnetic telescopic rod 10 is supplied with current, the telescopic end of the electromagnetic telescopic rod 10 drives the connecting block 92 to move, and the connecting block 92 drives the magnetic flux blocking plates 91 in the plurality of magnetic flux blocking units to fold or unfold. When the magnetic flux blocking plates 91 in the magnetic flux blocking assembly 9 are distributed along the radial direction of the rotor 3, i.e., the magnetic flux blocking plates 91 in the plurality of magnetic flux blocking units are completely folded together, the folded parts of the two magnetic flux blocking plates 91 in the same group are in contact with the inner surface of the magnetic flux slot 31. At this time, the magnetic flux blocking assembly 9 plays a role of magnetic flux blocking to prevent magnetic flux short circuiting, and reduce leakage magnetic flux of the permanent magnet unit away from one end of the magnetic flux control ring 6. When the magnetic flux blocking plates 91 in the plurality of magnetic flux blocking units are completely unfolded along the direction perpendicular to the radial direction, the magnetic flux passing channels are formed on the upper and lower sides of the magnetic flux blocking plates 91. At this time, the magnetic flux slot 31 plays a role of magnetic flux passing, and the permanent magnet unit away from one end of the magnetic flux control ring 6 exists magnetic flux short circuiting, and leakage magnetic flux increases.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A magnetic flux leakage adjustment type built-in permanent magnet synchronous motor, comprising a casing (1), a stator (2) and a rotor (3), the inside of the rotor (3) is fixedly installed with permanent magnets (4), and a plurality of permanent magnet units in the permanent magnets (4) are distributed in a radial direction, characterized in that: The magnetic flux control ring (6) is rotationally installed inside the rotor (3); the magnetic flux control ring (6) is composed of a plurality of magnetic flux passing portions (61) and a plurality of magnetic flux blocking portions (62), the magnetic flux passing portions (61) and the magnetic flux blocking portions (62) are alternately distributed and combined to form a ring shape, when the magnetic flux blocking portion (62) is located in the radial direction of the permanent magnet unit, the magnetic flux blocking portion (62) prevents the magnetic flux short circuit of the permanent magnet unit close to one end of the rotor (3) center, when the magnetic flux passing portion (61) is located in the radial direction of the permanent magnet unit, the magnetic flux passing portion (61) exists magnetic flux short circuit close to one end of the rotor (3) center. The magnetic flux passing portion (61) and the magnetic flux blocking portion (62) are the same as the number of the permanent magnet unit, the central angle of the arc surface of the magnetic flux passing portion (61) is not less than twice the central angle of the arc surface of the magnetic flux blocking portion (62).

2. The flux-regulated interior permanent magnet synchronous motor of claim 1, wherein: The inner ring of the magnetic flux control ring (6) is provided with a magnetic flux blocking ring (5), the magnetic flux blocking ring (5) is fixedly connected with the rotor (3), and the inner portion of the magnetic flux blocking ring (5) is fixedly installed with a rotating shaft (11).

3. The flux-regulated interior permanent magnet synchronous motor of claim 2, wherein: The inside of the rotor (3) is provided with a plurality of cavities (7), the cavities (7) are communicated with the outer ring surface of the magnetic flux control ring (6), and a plurality of cavities (7) are respectively distributed between adjacent two permanent magnet units.

4. The flux-regulated interior permanent magnet synchronous motor according to any one of claims 1-3, characterized in that: The inside of the cavity (7) is installed with an adjusting winding (71), the inner ring surface of the magnetic flux passing portion (61) is a magnetic material, when the adjusting winding (71) is in a conducting state, the magnetic flux between the adjusting winding (71) and the magnetic flux passing portion (61) can drive the magnetic flux control ring (6) to rotate; The surface of the cavity (7) is provided with a magnetic flux blocking layer (8). The inside of the rotor (3) is provided with an axial magnetic flux slot (31), and the magnetic flux slot (31) is located at one end of the permanent magnet unit away from the magnetic flux control ring (6); 5. The flux-regulated interior permanent magnet synchronous motor of claim 4, wherein: The inside of the magnetic flux slot (31) is installed with a magnetic flux blocking assembly (9), and the magnetic flux blocking assembly (9) comprises: A plurality of magnetic flux blocking plates (91), two magnetic flux blocking plates (91) form a group, the two magnetic flux blocking plates (91) in the same group are foldably connected, two groups of magnetic flux blocking plates (91) are symmetrically distributed and combined to form a magnetic flux blocking unit, two groups of magnetic flux blocking plates (91) in the same magnetic flux blocking unit are radially distributed, and two ends of the two groups of magnetic flux blocking plates (91) in the same magnetic flux blocking unit are rotationally installed on the surface of a connecting block (92), and the connecting block (92) is slidingly installed in the inner wall of the magnetic flux slot (31) along the width direction of the magnetic flux slot (31). The magnetic flux blocking assembly (9) comprises a plurality of magnetic flux blocking units, and the plurality of magnetic flux blocking units are sequentially distributed along the width direction of the magnetic flux slot (31). When the magnetic flux blocking plates (91) in the magnetic flux blocking assembly (9) are distributed along the radial direction of the rotor (3), the folding portions of the two magnetic flux blocking plates (91) in the same group are in contact with the inner surface of the magnetic flux slot (31). ​ 6. The flux-regulated interior permanent magnet synchronous motor of claim 5, wherein: The both side walls of the magnetic flux slot (31) are internally provided with electromagnetic telescopic rods (10), and the telescopic ends of the electromagnetic telescopic rods (10) are fixedly connected with the connecting blocks (92).

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