CN104836398B - Rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor - Google Patents

Abstract

The rotor magnetic concentration double-stator transverse magnetic field permanent magnet synchronous motor belongs to the field of motors. The invention solves the problems of traditional transverse structure motors with complex structure, low space utilization rate and winding utilization rate, and low torque density and power density. The present invention includes a stator, a rotor, a casing and a rotor bracket, the stator includes an outer stator and an inner stator, the rotor is located between the outer stator and the inner stator, and is fixed on the rotor bracket; a first working air gap is formed between the outer stator and the rotor, A second working air gap is formed between the inner stator and the rotor; the outer stator includes an outer stator core and an outer stator armature winding, the outer stator core includes p pairs of U-shaped outer stator cores staggered left and right, the inner stator includes an inner stator armature winding, The inner stator core, the non-magnetic inner stator sleeve and the inner stator shaft, the inner stator core includes p pairs of left and right staggered U-shaped inner stator cores, the rotor includes 2p first permanent magnets, 2p second permanent magnets, rotor core and shaft.

Description

Rotor Concentrated Magnetic Double Stator Transverse Magnetic Field Permanent Magnet Synchronous Motor

technical field

The invention relates to a permanent magnet motor with high power density and high torque density, belonging to the field of motors.

Background technique

Compared with electric excitation motors, permanent magnet motors, especially rare earth permanent magnet motors, have significant advantages such as simple structure, reliable operation, small size, light weight, low loss, and high efficiency; The scope is extremely wide, covering almost every field of aerospace, national defense, industrial and agricultural production and daily life. According to the permanent magnet magnetic circuit structure, the permanent magnet motor rotor structure is divided into surface mount type and magnetic accumulation type. The rotor adopts a magnetic-concentration structure. Compared with the surface-mounted rotor structure, the effective harmonic flux density in the air gap can be greatly improved, which can increase the power density of the motor and improve the power factor of the motor.

In the traditional radial flux and axial flux motors, the circuit and the magnetic circuit are on the same plane, and there is competition with each other. When the electric load is increased, the cross section of the coil, that is, the slot area, needs to be increased, so the tooth width is Will decrease, in order to prevent saturation, it is necessary to reduce the magnetic load. vice versa. Therefore, it is difficult to increase the power density of the motor.

In order to increase the power density, people use transverse flux structure motors, whose electric load and magnetic load are completely decoupled in structure, and there is no coupling between the magnetic circuits of each phase, which can be independently analyzed and controlled. In the case of the same volume, the torque density and power density can be increased by increasing the number of pole pairs of the motor, especially suitable for low-speed high-torque direct drive applications.

However, the traditional transverse structure motor has complex structure, low space utilization rate and winding utilization rate, and low torque density and power density.

Contents of the invention

The purpose of the present invention is to solve the problems of traditional transverse structure motors, complex structure, low space utilization rate and winding utilization rate, low torque density and low power density, and provides a rotor magnetic concentration type double stator transverse magnetic field permanent magnet synchronization motor.

The rotor magnetic concentration double-stator transverse magnetic field permanent magnet synchronous motor of the present invention includes a stator, a rotor, a casing and a rotor support, the stator includes an outer stator and an inner stator, and the rotor is located between the outer stator and the inner stator and is fixed on the rotor On the bracket; the first working air gap is formed between the outer stator and the rotor, and the second working air gap is formed between the inner stator and the rotor;

The outer stator includes an outer stator core and an outer stator armature winding. The outer stator core includes p first U-shaped outer stator cores and p second U-shaped outer stator cores, and p first U-shaped outer stator cores and p first U-shaped outer stator cores. Two U-shaped outer stator cores are alternately and evenly distributed on the inner surface of the casing along the circumferential direction, and the first U-shaped outer stator core and the second U-shaped outer stator core are staggered by a distance d in the axial direction; the outer stator armature winding is arranged at p In the common U-shaped area of a first U-shaped outer stator core and p second U-shaped outer stator cores;

The inner stator includes an inner stator armature winding, an inner stator core, a non-magnetic inner stator sleeve and an inner stator shaft, and the inner stator core includes p first U-shaped inner stator cores and p second U-shaped inner stator cores, p A first U-shaped inner stator core and p second U-shaped inner stator cores are alternately and evenly distributed on the outer surface of the non-magnetic inner stator sleeve along the circumferential direction, and the first U-shaped inner stator core and the second U-shaped inner stator core The inner stator cores are staggered by a distance d in the axial direction; the inner stator armature windings are arranged in the common U-shaped area of p first U-shaped inner stator cores and p second U-shaped inner stator cores; the non-magnetic inner stator sleeve fixedly arranged on the inner stator shaft;

The rotor includes 2p pieces of first permanent magnets, 2p pieces of second permanent magnets, rotor cores and rotating shafts. The rotor cores include 2p intermediate position H-shaped rotor cores and 4p external rectangular rotor cores; 2p intermediate position H-shaped rotor cores along the circumference The direction is evenly distributed. There are first permanent magnets and second permanent magnets respectively arranged between the left and right side surfaces of the H-shaped rotor core at the middle position and the two symmetrically arranged outer rectangular rotor cores. The symmetrically arranged two outer rectangular rotor cores The iron core is fixed on the rotor support; the rotor support is movably connected with the inner stator shaft through the bearing, the rotor support is fixed on the rotating shaft, and the rotating shaft is movably connected with the casing through the bearing; the axes of the rotating shaft and the inner stator shaft are on the same center line;

The first U-shaped outer stator core is radially aligned with the outer rectangular rotor core on one side, and the first U-shaped inner stator core is radially aligned with the outer rectangular rotor core on the symmetrical side, and has the same axial width.

The second U-shaped outer stator core is radially aligned with the outer rectangular rotor core on one side, and the second U-shaped inner stator core is radially aligned with the outer rectangular rotor core on the symmetrical side, and has the same axial width.

Advantages of the present invention:

1. The rotor of the motor of the present invention adopts a magnetism-concentrating structure. A pair of permanent magnets are placed in the core, and the magnetization directions are opposite, and the magnetization directions of the permanent magnets in the two adjacent rotor cores in the circumferential direction are opposite. Combined with the two adjacent stator cores in the circumferential direction, the left The structural characteristics of the symmetrical arrangement of the left and right respectively can realize the function of magnetic flux switching, avoiding the situation that the two rotor cores of adjacent traditional transverse magnetic field motors can only correspond to one stator core, and improve the space utilization rate. At the same time, the outer stator and the inner stator The structural characteristics of the left and right symmetrical arrangement of the iron core can simultaneously use two adjacent permanent magnets on the rotor to avoid the invalid working area of the permanent magnets, reduce the magnetic flux leakage of the magnetic accumulation structure, and improve the magnetic flux utilization rate of the motor.

2. The size of each stator core of the motor of the present invention is the same, and the size of each rotor core is also the same, and all of them can be formed by stacking silicon steel sheets. The permanent magnet can be fully utilized at any time, and the invalid working area of the permanent magnet can be avoided, which can effectively reduce the leakage flux of the motor, and improve the torque density and power density of the motor. Therefore, the present invention has wide application prospects, and can be applied in occasions such as wind power generation, electric vehicles, and ship electric propulsion.

3. The stator armature winding of the motor of the present invention is a ring winding, which is embedded in the groove of the stator core and has no ends, which effectively shortens the ineffective length of the winding. At the same time, the outer stator winding and the inner stator winding of each phase can be connected in series in the forward direction to form a set of windings, or can be connected in parallel as two sets of windings to operate independently. In a high-power drive motor system, double stator windings are used to reduce the voltage or current limit of the drive's power electronic switching device and reduce system costs when the total power remains unchanged.

Description of drawings

Fig. 1 is the structure schematic diagram of the rotor magnetic concentration double-stator transverse magnetic field permanent magnet synchronous motor of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Figure 4(a)(b) is the main magnetic flux of the motor between the two adjacent rotor units and the outer stator and inner stator at time t ₀ , and the armature winding is not energized;

Figure 5(a)(b) shows the main magnetic flux of the motor between the two adjacent rotor units and the outer stator and inner stator at time _t1 , and the armature winding is not energized.

detailed description

Specific embodiment one: The present embodiment is described below in conjunction with Fig. 1 to Fig. 5, and the rotor magnetic concentration double-stator transverse magnetic field permanent magnet synchronous motor described in the present embodiment includes a stator, a rotor, a casing 3 and a rotor bracket 4, and the stator includes The outer stator and the inner stator, the rotor is located between the outer stator and the inner stator, and is fixed on the rotor support 4; a first working air gap is formed between the outer stator and the rotor, and a second working air gap is formed between the inner stator and the rotor;

The outer stator includes an outer stator core 5 and an outer stator armature winding 6, the outer stator core 5 includes p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2, and p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2 are alternately and evenly distributed on the inner circular surface of the casing 3 along the circumferential direction, and the first U-shaped outer stator cores 5-1 and the second U-shaped outer stator cores 5-1 are The outer stator core 5-2 is staggered by a distance d in the axial direction; the outer stator armature winding 6 is arranged on the common U of p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2. type area;

The inner stator includes an inner stator armature winding 9, an inner stator core 10, a non-magnetic inner stator sleeve 12 and an inner stator shaft 13, and the inner stator core 10 includes p first U-shaped inner stator cores 10-1 and p first U-shaped inner stator cores 10-1 and p first Two U-shaped inner stator cores 10-2, p first U-shaped inner stator cores 10-1 and p second U-shaped inner stator cores 10-2 are alternately and evenly distributed on the non-magnetic inner stator sleeve 12 along the circumferential direction , and the first U-shaped inner stator core 10-1 and the second U-shaped inner stator core 10-2 are staggered by a distance d in the axial direction; the inner stator armature windings 9 are arranged in p first U-shaped inner stators In the common U-shaped area of the iron core 10-1 and the p second U-shaped inner stator cores 10-2; the non-magnetic inner stator sleeve 12 is fixedly arranged on the inner stator shaft 13;

The rotor includes 2p first permanent magnets 7, 2p second permanent magnets 11, a rotor core 8 and a rotating shaft 1, and the rotor core 8 includes 2p intermediate position H-shaped rotor cores 8-1 and 4p outer rectangular rotor cores 8-2 ; 2p middle position H-type rotor cores 8-1 are uniformly distributed along the circumferential direction, and each middle position H-type rotor core 8-1 is arranged between the left and right side surfaces and two symmetrically arranged outer rectangular rotor cores 8-2 There are a first permanent magnet 7 and a second permanent magnet 11, and the two symmetrically arranged outer rectangular rotor cores 8-2 are fixed on the rotor support 4; the rotor support 4 is movably connected with the inner stator shaft 13 through a bearing 14, and the rotor support is fixed On the rotating shaft 1, the rotating shaft 1 is movably connected with the housing 3 through the bearing 2; the axes of the rotating shaft 1 and the inner stator shaft 13 are on the same center line;

The first U-shaped outer stator core 5-1 is radially aligned with the outer rectangular rotor core 8-2 on one side, the first U-shaped inner stator core 10-1 is radially aligned with the outer rectangular rotor core 8-2 on the symmetrical side, and have the same axial width.

The second U-shaped outer stator core 5-2 is radially aligned with the outer rectangular rotor core 8-2 on one side, and the second U-shaped inner stator core 10-2 is radially aligned with the outer rectangular rotor core 8-2 on the symmetrical side, and have the same axial width.

The first permanent magnet 7 and the second permanent magnet 11 are all magnetized in the axial direction, and the magnetization directions of the first permanent magnet 7 and the second permanent magnet 11 on both sides of the H-type rotor core 8-1 at the same middle position are opposite, and the circumferential direction is opposite to each other. The magnetization directions of two adjacent first permanent magnets 7 are alternately opposite, and the magnetization directions of two circumferentially adjacent second permanent magnets 11 are alternately opposite.

Both the outer stator core 5 and the inner stator core 10 are made of silicon steel sheets.

The elongated part in the middle of the middle position H-type rotor core 8-1 can be made of non-magnetic material.

The outer stator armature winding 6 and the inner stator armature winding 9 adopt ring windings. Embedded in the slot of the stator core, the winding has no ends, effectively shortening the effective length of the winding. In a high-power drive motor system, double stator windings are used to reduce the voltage or current limit of the drive's power electronic switching device and reduce system costs when the total power remains unchanged.

This embodiment is a single-phase motor with a number of poles of 2p. The motor in this embodiment can be used as a generator, that is, when the prime mover drives the rotor to rotate, the stator armature winding outputs alternating current, which is rectified, boosted, inverted, etc. The circuit can directly supply power to the load or carry out microgrid networking.

In this embodiment, the rotor adopts a magnetism-concentrating structure. A pair of permanent magnets are placed in the core, and the magnetization directions of the permanent magnets in the two adjacent rotor cores in the circumferential direction are opposite. Combined with the structural characteristics of the left and right symmetrical arrangements of the two adjacent stator cores in the circumferential direction, the function of magnetic flux switching can be realized. It avoids the situation that the two rotor cores of the adjacent traditional transverse magnetic field motor can only correspond to one stator core, which improves the space utilization rate. At the same time, the structural characteristics of the left and right symmetrical arrangement of the outer stator and the inner stator core can be used at the same time. Two adjacent permanent magnets avoid the invalid working area of the permanent magnets, reduce the magnetic flux leakage of the magnetic concentration structure, and improve the magnetic flux utilization rate of the motor.

The air-gap magnetic circuit of the outer stator is connected in series with the air-gap magnetic circuit of the inner stator, and the plane where the main magnetic flux is located is perpendicular to the rotation direction of the rotor.

The number of stator poles is equal to the number of rotor poles, which can improve the space utilization rate of the motor.

The first permanent magnet 7 and the second permanent magnet 11 in the rotor core 8 are made of NdFeB material.

Working principle: As shown in Figure 4, at time t ₀ , the main flux of the rotor magnetism-concentrating double-stator transverse magnetic field permanent magnet synchronous motor, the armature winding is not energized, and Figure 4(a) shows that under the P pole, the outer stator core 5-1 is left-aligned with the rotor core 8, that is, it is aligned with the left rotor core 8-2, and the inner stator core 10-1 is right-aligned with the rotor core 8, that is, it is aligned with the right rotor core 8-2, as shown in Figure 4(b) It is shown that under the P+1 pole, the outer stator core 5-2 is right aligned with the rotor core 8, that is, it is aligned with the right rotor core 8-2, and the inner stator core 10-2 is left aligned with the rotor core 8, that is, it is aligned with the left side The rotor core 8-2 is aligned, the outer stator and the inner stator magnetic circuit are connected in series under the same pole, the magnetic flux generated by the permanent magnet of the rotor unit under different poles passes through the stator core in the same direction, and the magnetic flux of the outer stator winding 6 and the inner stator winding 9 The direction is also the same; when the rotor is at position 2, which is 180 degrees electrical angle different from the position at time t ₀ , that is, the position at time t ₁ , as shown in Figure 5, the alignment direction of the outer stator core 5, the inner stator core 10 and the rotor core 8 Just opposite to time t ₀ , the direction of magnetic flux is switched to another direction. At the same time, the plane where the magnetic flux direction is perpendicular to the direction of motion. When the rotor rotates continuously, the magnitude and direction of the interlinked magnetic flux in the stator armature windings change periodically, thereby inducing an electric potential and realizing electromechanical energy conversion.

When the stator armature winding passes through the appropriate current, the rotor rotation can be realized. By changing the frequency and amplitude of the armature winding supply current, the rotor speed and torque can be controlled.

It can be seen from Figures 4 and 5 that the two permanent magnets of each unit are in working state at any time, and the outer stator air-gap magnetic circuit is connected in series with the inner stator air-gap magnetic circuit, which can effectively reduce the magnetic flux leakage of the permanent magnets, thereby improving the performance of the motor. Power factor and power density.

Specific embodiment two: The present embodiment is described below in conjunction with Fig. 1 to Fig. 5, and the rotor magnetism-concentrating double-stator transverse magnetic field permanent magnet synchronous motor described in the present embodiment includes a three-phase stator, a three-phase rotor, a casing 3 and three Rotor bracket 4, each phase stator includes an outer stator and an inner stator, each phase rotor is located between the phase outer stator and the phase inner stator, and is fixed on a rotor bracket 4; the first working gas is formed between the outer stator and the rotor The second working air gap is formed between the inner stator and the rotor; the three-phase stators are arranged side by side along the axial direction;

The outer stator includes an outer stator core 5 and an outer stator armature winding 6, the outer stator core 5 includes p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2, and p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2 are alternately and evenly distributed on the inner circular surface of the casing 3 along the circumferential direction, and the first U-shaped outer stator cores 5-1 and the second U-shaped outer stator cores 5-1 are The outer stator core 5-2 is staggered by a distance d in the axial direction; the outer stator armature winding 6 is arranged on the common U of p first U-shaped outer stator cores 5-1 and p second U-shaped outer stator cores 5-2. type area;

The inner stator includes an inner stator armature winding 9, an inner stator core 10, a non-magnetic inner stator sleeve 12 and an inner stator shaft 13, and the inner stator core 10 includes p first U-shaped inner stator cores 10-1 and p first U-shaped inner stator cores 10-1 and p first Two U-shaped inner stator cores 10-2, p first U-shaped inner stator cores 10-1 and p second U-shaped inner stator cores 10-2 are alternately and evenly distributed on the non-magnetic inner stator sleeve 12 along the circumferential direction , and the first U-shaped inner stator core 10-1 and the second U-shaped inner stator core 10-2 are staggered by a distance d in the axial direction; the inner stator armature windings 9 are arranged in p first U-shaped inner stators In the common U-shaped area of the iron core 10-1 and the p second U-shaped inner stator cores 10-2; the non-magnetic inner stator sleeve 12 is fixedly arranged on the inner stator shaft 13;

The rotor includes 2p first permanent magnets 7, 2p second permanent magnets 11, a rotor core 8 and a rotating shaft 1, and the rotor core 8 includes 2p intermediate position H-shaped rotor cores 8-1 and 4p outer rectangular rotor cores 8-2 ; 2p middle position H-type rotor cores 8-1 are uniformly distributed along the circumferential direction, and each middle position H-type rotor core 8-1 is arranged between the left and right side surfaces and two symmetrically arranged outer rectangular rotor cores 8-2 There are a first permanent magnet 7 and a second permanent magnet 11, and the two symmetrically arranged outer rectangular rotor cores 8-2 are fixed on the rotor support 4; the rotor support 4 is movably connected with the inner stator shaft 13 through a bearing 14, and the rotor support is fixed On the rotating shaft 1, the rotating shaft 1 is movably connected with the housing 3 through the bearing 2; the axes of the rotating shaft 1 and the inner stator shaft 13 are on the same center line;

The first U-shaped outer stator core 5-1 is radially aligned with the outer rectangular rotor core 8-2 on one side, the first U-shaped inner stator core 10-1 is radially aligned with the outer rectangular rotor core 8-2 on the symmetrical side, and have the same axial width.

The second U-shaped outer stator core 5-2 is radially aligned with the outer rectangular rotor core 8-2 on one side, and the second U-shaped inner stator core 10-2 is radially aligned with the outer rectangular rotor core 8-2 on the symmetrical side, and have the same axial width.

The three-phase outer stator cores 5 have a difference of 120 electrical degrees in the circumferential direction, the three-phase inner stator cores 10 have a 120 electrical degree difference in the circumferential direction, or the three-phase rotor cores 8 have a 120 electrical degree difference in the circumferential direction.

The first permanent magnet 7 and the second permanent magnet 11 are all magnetized in the axial direction, and the magnetization directions of the first permanent magnet 7 and the second permanent magnet 11 on both sides of the H-type rotor core 8-1 at the same middle position are opposite, and the circumferential direction is opposite to each other. The magnetization directions of two adjacent first permanent magnets 7 are alternately opposite, and the magnetization directions of two circumferentially adjacent second permanent magnets 11 are alternately opposite.

Both the outer stator core 5 and the inner stator core 10 are made of silicon steel sheets.

The elongated part in the middle of the middle position H-type rotor core 8-1 can be made of non-magnetic material.

The outer stator armature winding 6 and the inner stator armature winding 9 adopt ring windings.

This embodiment is a three-phase motor, and its working principle is the same as that of the first embodiment.

The outer stator winding 6 and the inner stator winding 9 of each phase can be connected in series in the forward direction to form a set of windings, or can be connected in parallel as two sets of windings to operate independently.

Claims (6)

1. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor, it is characterised in that it includes stator, rotor, shell (3) With rotor field spider (4), stator includes external stator and inner stator, and rotor is located between external stator and inner stator, and is fixed on rotor On support (4)；The first working gas gap is formed between external stator and rotor, the second working gas gap between inner stator and rotor, is formed；

External stator includes external stator iron core (5) and external stator armature winding (6), external stator iron core (5) including p first it is U-shaped outward Stator core (5-1) and p the second U-shaped external stator iron core (5-2), p the first U-shaped external stator iron core (5-1) and p the 2nd U Type external stator iron core (5-2) is along the circumferential direction alternately distributed on the internal circular surfaces of shell (3), and the first U-shaped external stator iron core (5- 1) He the second U-shaped external stator iron core (5-2) is being axially offset apart from d；It is U-shaped outer that external stator armature winding (6) is arranged on p first In the common U-shaped region of stator core (5-1) and individual second U-shaped external stators iron core (5-2) of p；

Inner stator includes inner stator armature winding (9), internal stator iron core (10), non-magnetic default sub-sleeve (12) and inner stator axle (13), internal stator iron core (10) includes p the first U-shaped internal stator iron core (10-1) and p the second U-shaped internal stator iron core (10- 2), p the first U-shaped internal stator iron core (10-1) and p the second U-shaped internal stator iron core (10-2) are along the circumferential direction alternately distributed on The outer round surface of non-magnetic default sub-sleeve (12), and the first U-shaped internal stator iron core (10-1) and the second U-shaped internal stator iron core (10-2) axially offsetting apart from d；Inner stator armature winding (9) is arranged on p the first U-shaped internal stator iron core (10-1) and p In the common U-shaped region of second U-shaped internal stator iron core (10-2)；Non-magnetic default sub-sleeve (12) is fixedly installed on inner stator axle (13) on；

Rotor includes the first permanent magnet of 2p blocks (7), the second permanent magnet of 2p blocks (11), rotor core (8) and rotating shaft (1), rotor ferrum The heart (8) includes 2p centre position H type rotor cores (8-1) and 4p outer rectangular rotor core (8-2)；2p centre position H type rotor cores (8-1) is along the circumferential direction uniform, the left and right side surface in each centre position H type rotor cores (8-1) and symmetrical The first permanent magnet (7) and the second permanent magnet (11) are respectively arranged between the two outer rectangular rotor cores (8-2) for arranging, should Symmetrically arranged two outer rectangular rotor cores (8-2) are fixed on rotor field spider (4)；Rotor field spider (4) is by bearing (14) it is flexibly connected with inner stator axle (13), rotor field spider is fixed in rotating shaft (1), rotating shaft (1) is by bearing (2) and shell (3) it is flexibly connected；The axle center of rotating shaft (1) and inner stator axle (13) is on same centrage；

First U-shaped external stator iron core (5-1) and outer rectangular rotor core (8-2) radially aligned of side, the first U-shaped inner stator Outer rectangular rotor core (8-2) radially aligned of unshakable in one's determination (10-1) and symmetrical side, and the first U-shaped external stator (5-1) unshakable in one's determination and The axial width of the first U-shaped internal stator iron core (10-1) is equal；

Second U-shaped internal stator iron core (10-2) and outer rectangular rotor core (8-2) radially aligned of side, second is U-shaped outer fixed Sub- iron core (5-2) and outer rectangular rotor core (8-2) radially aligned of symmetrical side, and the second U-shaped internal stator iron core (10-2) It is equal with the axial width of the second U-shaped external stator iron core (5-2).

2. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor, it is characterised in that it includes that threephase stator, three-phase turn Son, shell (3) and three rotor field spiders (4), include external stator and inner stator per phase stator, are located at the phase external stator per phase rotor And the phase inner stator between, and it is fixed on a rotor field spider (4)；The first working gas gap is formed between external stator and rotor, The second working gas gap is formed between inner stator and rotor；Threephase stator arranged in parallel vertically；

External stator includes external stator iron core (5) and external stator armature winding (6), external stator iron core (5) including p first it is U-shaped outward Stator core (5-1) and p the second U-shaped external stator iron core (5-2), p the first U-shaped external stator iron core (5-1) and p the 2nd U Type external stator iron core (5-2) is along the circumferential direction alternately distributed on the internal circular surfaces of shell (3), and the first U-shaped external stator iron core (5- 1) He the second U-shaped external stator iron core (5-2) is being axially offset apart from d；It is U-shaped outer that external stator armature winding (6) is arranged on p first In the common U-shaped region of stator core (5-1) and individual second U-shaped external stators iron core (5-2) of p；

Inner stator includes inner stator armature winding (9), internal stator iron core (10), non-magnetic default sub-sleeve (12) and inner stator axle (13), internal stator iron core (10) includes p the first U-shaped internal stator iron core (10-1) and p the second U-shaped internal stator iron core (10- 2), p the first U-shaped internal stator iron core (10-1) and p the second U-shaped internal stator iron core (10-2) are along the circumferential direction alternately distributed on The outer round surface of non-magnetic default sub-sleeve (12), and the first U-shaped internal stator iron core (10-1) and the second U-shaped internal stator iron core (10-2) axially offsetting apart from d；Inner stator armature winding (9) is arranged on p the first U-shaped internal stator iron core (10-1) and p In the common U-shaped region of second U-shaped internal stator iron core (10-2)；Non-magnetic default sub-sleeve (12) is fixedly installed on inner stator axle (13) on；

Rotor includes the first permanent magnet of 2p blocks (7), the second permanent magnet of 2p blocks (11), rotor core (8) and rotating shaft (1), rotor ferrum The heart (8) includes 2p centre position H type rotor cores (8-1) and 4p outer rectangular rotor core (8-2)；2p centre position H type rotor cores (8-1) is along the circumferential direction uniform, the left and right side surface in each centre position H type rotor cores (8-1) and symmetrical The first permanent magnet (7) and the second permanent magnet (11) are respectively arranged between the two outer rectangular rotor cores (8-2) for arranging, should Symmetrically arranged two outer rectangular rotor cores (8-2) are fixed on rotor field spider (4)；Rotor field spider (4) is by bearing (14) it is flexibly connected with inner stator axle (13), rotor field spider is fixed in rotating shaft (1), rotating shaft (1) is by bearing (2) and shell (3) it is flexibly connected；The axle center of rotating shaft (1) and inner stator axle (13) is on same centrage；

First U-shaped external stator iron core (5-1) and outer rectangular rotor core (8-2) radially aligned of side, the first U-shaped inner stator Outer rectangular rotor core (8-2) radially aligned of unshakable in one's determination (10-1) and symmetrical side, and the first U-shaped external stator (5-1) unshakable in one's determination and The axial width of the first U-shaped internal stator iron core (10-1) is equal；

Second U-shaped internal stator iron core (10-2) and outer rectangular rotor core (8-2) radially aligned of side, second is U-shaped outer fixed Sub- iron core (5-2) and outer rectangular rotor core (8-2) radially aligned of symmetrical side, and the second U-shaped internal stator iron core (10-2) It is equal with the axial width of the second U-shaped external stator iron core (5-2)；

Three-phase external stator iron core (5) differs 120 degree of electrical angles, three-phase internal stator iron cores (10) in a circumferential direction successively in circumference Differ 120 degree of electrical angles or three-phase rotor core (8) on direction successively 120 degree of electrical angles are mutually differed successively in circumferencial direction.

3. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor according to claim 1 or claim 2, it is characterised in that One permanent magnet (7) and the second permanent magnet (11) are magnetized vertically, same centre position H type rotor cores (8-1) both sides The magnetizing direction of the first permanent magnet (7) and the second permanent magnet (11) is conversely, the side of magnetizing of circumferentially-adjacent two piece of first permanent magnet (7) To being alternately opposite, the magnetizing direction of circumferentially-adjacent two piece of second permanent magnet (11) is alternately opposite.

4. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor according to claim 1 or claim 2, it is characterised in that outward Stator core (5) and internal stator iron core (10) are formed by silicon steel plate packing.

5. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor according to claim 1 or claim 2, it is characterised in that in Between strip part in the middle of position H type rotor cores (8-1) made using non-magnet material.

6. rotor magneticfocusing bimorph transducer transverse magnetic field permanent-magnet synchronous motor according to claim 1 or claim 2, it is characterised in that outward Stator armature winding (6) and inner stator armature winding (9) adopt Circular Winding.