CN101938201B - Axial-radial magnetic field modulation brushless composite structure motor - Google Patents

Abstract

The invention discloses an axial-radial magnetic field modulation type brushless composite structural motor, which belongs to the field of motors and solves the problems of heavy system volume, complex structure, high cost, limited performance and incapability of effectively outputting power because an engine and other system components in the conventional series, parallel and parallel-series driving devices cannot be simply and efficiently matched. A shell is divided into two parts which are provided with an axial double-rotor motor and a radial torque adjusting motor respectively, a permanent-magnetic rotor of the axial double-rotor motor is driven by a prime mover to form a 2n-pole magnetic field, a stator of the axial double-rotor motor forms a 2p-pole magnetic field, an output shaft of a modulation ring rotor consisting of q magnetic conducting blocks and insulating blocks outputs the required rotating speed, and p is equal to an absolute value of hn and kq, wherein the output rotating speed does not depend on the input rotating speed, so infinitely variable speed is realized; and the radial torque adjusting motor inputs a driving torque or a braking torque according to the actual load requirement so as to meet the actual torque requirement of the load and balance the input and output energy of the output shaft of the modulation ring rotor.

Description

Axial-radial magnetic field modulation brushless composite structure motor

technical field

The invention relates to an axial-radial magnetic field modulation type brushless composite structure motor, which belongs to the field of motors.

Background technique

Fuel consumption and exhaust emission pollution of traditional internal combustion engine vehicles are hot issues of worldwide concern. The use of electric vehicles can achieve low energy consumption and low emissions. However, due to the energy density, lifespan, and price of batteries, which are one of the key components of electric vehicles, the cost performance of electric vehicles cannot compete with traditional internal combustion engine vehicles. Under such circumstances, hybrid electric vehicles, which combine the advantages of internal combustion engine vehicles and electric vehicles, develop rapidly and become a hot spot in the development of new vehicles.

The characteristics of the existing serial driving device are: the engine can be operated stably in its best working area without being affected by the driving conditions of the vehicle, and an engine with a lower power can be selected, but a generator with sufficient power is required And the motor, the output of the engine needs to be fully converted into electrical energy and then into the mechanical energy to drive the car. Due to the low efficiency of electromechanical energy conversion and battery charging and discharging, the utilization rate of fuel energy is relatively low; the energy utilization rate of the parallel drive device is relatively low. High, but the engine operating conditions are affected by the driving conditions of the car, so it is not suitable for frequently changing driving conditions. Compared with the serial structure, it requires more complicated transmission devices, power compound devices and transmission mechanisms; hybrid drive The device combines the advantages of series and parallel. Since the energy flow of the entire drive system is more flexible, components such as the engine, generator, and motor can be further optimized, thereby making the entire system more efficient. But still need comparatively complicated transmission device and power compound device and transmission mechanism.

In the above-mentioned driving device, there is a problem that the engine and other components of the system cannot be coordinated and coordinated, so that the whole system has problems of bulky volume, complex structure, large energy consumption, and large exhaust emissions, and cannot effectively output power.

Contents of the invention

The purpose of the present invention is to solve the problem that the engine and other components of the system in the existing series, parallel and hybrid drive devices cannot be coordinated simply and efficiently, so that the whole system has bulky volume, complex structure, high cost, and limited performance. To solve the problem of not being able to effectively output power, an axial-radial magnetic field modulation type brushless composite structure motor is provided.

The first structure of the axial-radial magnetic field modulation type brushless composite structure motor of the present invention:

The casing of the axial-radial magnetic field modulation type brushless composite structure motor is divided into two parts on the left and right by a partition, and the axial double-rotor motor and the radial torque adjustment motor are respectively arranged in the two parts on the left and right of the casing. The axial double-rotor motor includes a first stator, a modulating ring rotor, a first permanent magnet rotor, a permanent magnet rotor output shaft and a modulating ring rotor output shaft, and the radial torque adjustment motor includes a second stator and a second permanent magnet The rotor, the modulating ring rotor output shaft is also used as the rotor shaft of the radial torque regulating motor,

The second stator of the radial torque regulating motor is fixed on the inner wall of the right part of the housing, the second permanent magnet rotor is fixed on the output shaft of the modulation ring rotor, and the radial direction between the second stator and the second permanent magnet rotor There is an air gap L3 in the direction;

The outer ring end faces of the two first stators of the axial double rotor motor are respectively fixed on the inner walls of the left and right end faces of the left part of the housing, the first permanent magnet rotor is fixed on the output shaft of the permanent magnet rotor, and the permanent magnet rotor is fixed on the output shaft of the permanent magnet rotor. The output shaft of the rotor is rotatably connected to one end face of the casing through the first bearing, and is rotatably connected to the modulating ring rotor through the second bearing and the fourth bearing. The modulating ring rotor is located between the two first stators, and the first permanent magnet On the outside of the rotor, one end of the output shaft of the modulating ring rotor is fixed on the modulating ring rotor, and the output shaft of the modulating ring rotor is rotatably connected with the partition of the housing through the third bearing, and is rotatably connected with the other end surface of the housing through the fifth bearing ; There is an air gap L1 between the modulation ring rotor and the circular end face of the first stator; there is an air gap L2 between the modulation ring rotor and the first permanent magnet rotor,

The first stator is composed of a first stator core and an m-phase first stator winding. When the first stator winding is supplied with an m-phase symmetrical alternating current, a rotating magnetic field with 2p poles is formed, and m and p are positive integers;

The first permanent magnet rotor is composed of a first permanent magnet rotor core and multiple first permanent magnet units. Permanent magnet units, 2n first permanent magnet units arranged on the end face of each disc are evenly arranged radially with the output shaft of the permanent magnet rotor as the center, the first permanent magnet units are magnetized in parallel in the axial direction, and the same disc end face The magnetization directions of the two adjacent first permanent magnet units are opposite, and the magnetization directions of the two first permanent magnet units symmetrically located on the end faces of the disks on both sides are the same. When the first permanent magnet rotor rotates, a permanent magnet with 2n poles is formed. Magnetic rotor end face magnetic field, n is a positive integer;

The modulation ring rotor is composed of a rotor support, 2q magnetic blocks and 2q insulating blocks. The rotor support is a closed frame composed of two circular end faces and a ring. Each circular end face is staggered with q magnetic blocks and q A block of insulating blocks, and the output shaft of the permanent magnet rotor is arranged uniformly in a radial shape;

And the relationship p=|hn+kq| is satisfied, where h is a positive odd number and k is an integer.

The second structure of the axial-radial magnetic field modulation type brushless composite structure motor of the present invention:

The casing of the axial-radial magnetic field modulation type brushless composite structure motor is divided into left and right parts by a separator, and the radial torque regulating motor and the axial double-rotor motor are respectively arranged in the left and right parts of the casing. The axial double-rotor motor includes a first stator, a modulating ring rotor, a first permanent magnet rotor, a permanent magnet rotor output shaft and a modulating ring rotor output shaft, and the radial torque adjustment motor includes a second stator and a second permanent magnet The rotor, the modulating ring rotor output shaft is also used as the rotor shaft of the radial torque regulating motor,

The second stator of the radial torque regulating motor is fixed on the inner wall of the left part of the housing, the second permanent magnet rotor is fixed on the output shaft of the modulation ring rotor, and the radial direction between the second stator and the second permanent magnet rotor There is an air gap L3 in the direction;

The outer circular ring end face of the first stator of the axial double-rotor motor is fixed on the inner wall of the left end face of the separator in the right part of the housing, the first permanent magnet rotor is fixed on the permanent magnet rotor output shaft, and the permanent magnet rotor output The shaft is rotatably connected to one end face of the housing through the third bearing, the modulation ring rotor is located between the first stator and the first permanent magnet rotor, and one end of the output shaft of the modulation ring rotor rotates with the first permanent magnet rotor through the second bearing The output shaft of the modulating ring rotor is rotatably connected to the partition of the housing through the first bearing, and is rotatably connected to the other end face of the housing through the fourth bearing; there is an air gap L1 between the modulating ring rotor and the first stator ; There is an air gap L2 between the modulation ring rotor and the first permanent magnet rotor;

The first stator is composed of a first stator core and an m-phase first stator winding. When the first stator winding is supplied with an m-phase symmetrical alternating current, a rotating magnetic field with 2p poles is formed, and m and p are positive integers;

The first permanent magnet rotor is composed of a first permanent magnet rotor core and 2n first permanent magnet units, the first permanent magnet rotor core is disc-shaped, and the 2n first permanent magnet units are arranged on the first The disk end face of the permanent magnet rotor core is evenly arranged radially around the output shaft of the permanent magnet rotor. The first permanent magnet unit is magnetized parallel to the axial direction, and the magnetization direction of two adjacent first permanent magnet units On the contrary, when the first permanent magnet rotor rotates, a permanent magnet rotor end surface magnetic field with 2n poles is formed, and n is a positive integer;

The modulation ring rotor is composed of a rotor support, 2q magnetic blocks and 2q insulating blocks. The rotor support is a closed frame composed of two circular end faces and a ring. Each circular end face is staggered with q magnetic blocks and q A block of insulating blocks, and the output shaft of the permanent magnet rotor is arranged uniformly in a radial shape;

And the relationship p=|hn+kq| is satisfied, where h is a positive odd number and k is an integer.

Advantages of the present invention: the motor of the present invention is a motor with a composite structure, and has two rotating shafts. One rotating shaft realizes high-speed and low-torque operation, and the other rotating shaft realizes low-speed and high-torque operation.

When the present invention is used in combination with an internal combustion engine, the internal combustion engine can always run in the highest efficiency zone regardless of road conditions, thereby reducing fuel consumption and exhaust emissions, and realizing energy saving and consumption reduction; it can also replace gearboxes, clutches and Flywheel and other components simplify the structure of the car and reduce the cost. It can realize the speed driving control of the car and the smooth speed regulation in a wide range through electronic devices; at the same time, it also has the advantages of not requiring complicated cooling devices, simple structure, small size and low cost. It can also be used in industrial installations where two mechanical shafts with different rotational speeds work simultaneously.

The invention belongs to the brushless structure, and overcomes the problems of reduced operating efficiency, reduced reliability and frequent maintenance of brushes and other components caused by the use of a brush slip ring feeding structure for a motor with a composite brush structure.

Description of drawings

Fig. 1 is the structural representation of embodiment one and two;

Fig. 2 is a D-D sectional view of Fig. 1;

Fig. 3 is a schematic structural view of Embodiment 3;

Fig. 4 is the E-E sectional view of Fig. 3;

Fig. 5 is a schematic structural diagram of Embodiment 4;

Fig. 6 is the F-F sectional view of Fig. 5;

Fig. 7 is a schematic structural diagram of Embodiment 5;

Fig. 8 is a G-G sectional view of Fig. 7;

Fig. 9 is a schematic structural diagram of Embodiment 6;

Fig. 10 is the H-H sectional view of Fig. 9;

Fig. 11 is A-A sectional view of Fig. 1, Fig. 3, Fig. 5, Fig. 7 and Fig. 9;

Fig. 12 is the B-B sectional view of Fig. 1, Fig. 3, Fig. 5, Fig. 7 and Fig. 9;

Fig. 13 is the C-C sectional view of Fig. 1, Fig. 3, Fig. 5, Fig. 7 and Fig. 9;

Fig. 14 is a schematic structural view of Embodiments 7 and 8;

Fig. 15 is the L-L sectional view of Fig. 14;

Fig. 16 is a schematic structural diagram of Embodiment 9;

Fig. 17 is the M-M sectional view of Fig. 16;

Fig. 18 is a schematic structural diagram of Embodiment 10;

Fig. 19 is the N-N sectional view of Fig. 18;

Fig. 20 is a schematic structural diagram of Embodiment 11;

Fig. 21 is the O-O sectional view of Fig. 20;

Fig. 22 is a schematic structural diagram of Embodiment 12;

Figure 23 is a P-P sectional view of Figure 22;

Fig. 24 is the I-I sectional view of Fig. 14, Fig. 16, Fig. 18, Fig. 20 and Fig. 22;

Fig. 25 is a J-J sectional view of Fig. 14, Fig. 16, Fig. 18, Fig. 20 and Fig. 22;

FIG. 26 is a K-K sectional view of FIG. 14 , FIG. 16 , FIG. 18 , FIG. 20 and FIG. 22 .

Detailed ways

Specific Embodiment 1: The present embodiment will be described below with reference to FIGS. 1 to 13. In this embodiment, the axial-radial magnetic field modulation type brushless composite structure motor, the housing 4 is divided into left and right parts by a separator, and the axial double rotors The motor and the radial torque regulating motor are respectively arranged in the left and right parts of the casing 4, and the axial double-rotor motor includes a first stator 5, a modulation ring rotor 6, a first permanent magnet rotor 7, and a permanent magnet rotor output Shaft 1 and modulating ring rotor output shaft 9, the radial torque regulating motor includes a second stator 11 and a second permanent magnet rotor 12, modulating ring rotor output shaft 9 simultaneously serves as the rotor shaft of the radial torque regulating motor,

The second stator 11 of the radial torque regulating motor is fixed on the inner wall of the right part of the housing 4, and the second permanent magnet rotor 12 is fixed on the modulation ring rotor output shaft 9, and the second stator 11 is connected with the second permanent magnet There is an air gap L3 between the rotors 12 along the radial direction;

The outer ring end surfaces of the two first stators 5 of the axial double-rotor motor are respectively fixed on the inner walls of the left and right end surfaces of the left part of the housing 4, and the first permanent magnet rotor 7 is fixed on the output shaft 1 of the permanent magnet rotor. Above, the output shaft 1 of the permanent magnet rotor is rotatably connected to one end face of the casing 4 through the first bearing 2, and is rotatably connected to the modulating ring rotor 6 through the second bearing 3 and the fourth bearing 10, and the modulating ring rotor 6 is located at two Between the first stator 5 and outside the first permanent magnet rotor 7, one end of the modulating ring rotor output shaft 9 is fixed on the modulating ring rotor 6, and the modulating ring rotor output shaft 9 passes through the connection between the third bearing 8 and the housing 4 The divider is rotatably connected, and is rotatably connected with the other end face of the housing 4 through the fifth bearing 13; there is an air gap L1 between the ring end face of the modulating ring rotor 6 and the first stator 5; the modulating ring rotor 6 and the first permanent There is an air gap L2 between the magnetic rotors 7,

The first stator 5 is composed of a first stator core 5-2 and an m-phase first stator winding 5-1. When the first stator winding 5-1 is supplied with an m-phase symmetrical alternating current, a rotation of 2p poles is formed. Magnetic field, m and p are positive integers;

The first permanent magnet rotor 7 is composed of a first permanent magnet rotor core 7-2 and a plurality of first permanent magnet units 7-1, the first permanent magnet rotor core 7-2 is disc-shaped, and the first permanent magnet rotor core 7 -2 The first permanent magnet units 7-1 are arranged symmetrically on both sides of the disk end surfaces, and the 2n first permanent magnet units 7-1 arranged on each disk end surface are radially centered on the output shaft 1 of the permanent magnet rotor Evenly arranged, the first permanent magnet units 7-1 are magnetized in parallel in the axial direction, the magnetization directions of two adjacent first permanent magnet units 7-1 on the same disc end face are opposite, and the positions on the end faces of the discs on both sides are symmetrical The magnetization directions of the two first permanent magnet units 7-1 are the same, and when the first permanent magnet rotor 7 rotates, a permanent magnet rotor end surface magnetic field with 2n poles is formed, and n is a positive integer;

The modulation ring rotor 6 is composed of a rotor support 6-3, a 2q magnetic block 6-1 and a 2q insulating block 6-2. The rotor support 6-3 is a closed frame made of two round end faces and a ring, each q blocks of magnetic conductive blocks 6-1 and q blocks of insulating blocks 6-2 are arranged staggeredly on each circular end face, and are evenly arranged radially with the output shaft 1 of the permanent magnet rotor as the center; the magnetic conductive blocks 6-1 are made of soft magnetic composite Material, silicon steel sheet, solid iron or soft ferrite;

And the relationship p=|hn+kq| is satisfied, where h is a positive odd number and k is an integer.

The axial double-rotor motor described in this embodiment has an axially symmetrical structure, which can avoid asymmetrical magnetic field tension generated in the axial direction.

The first stator core 5-2 is annular, and the outer ring end face of the first stator core 5-2 is fixed on the end face inner wall of the left part of the housing 4, and the inner ring end face of the first stator core 5-2 is A plurality of slots are opened in the radial direction on the end face, and the centerlines of the openings of the plurality of slots are evenly distributed radially around the output shaft 1 of the permanent magnet rotor, and the first stator windings 5-1 are respectively embedded in the slots to form m-phase winding, m is a positive integer.

The first permanent magnet unit 7-1 provided on the first permanent magnet rotor 7 has two modes:

The first type: 2n first permanent magnet units 7 - 1 embedded in the end surface of each disk of the first permanent magnet unit 7 - 1 are uniformly arranged radially with the output shaft 1 of the permanent magnet rotor as the center.

The second type: 2n first permanent magnet units 7 - 1 that are surface-mounted on each disk end surface of the first permanent magnet unit 7 - 1 are evenly arranged radially with the output shaft 1 of the permanent magnet rotor as the center.

The second stator 11 is composed of a second stator core 11-1 and an m′-phase second stator winding 11-2. The second stator core 11-1 is circular, and its inner circular surface has a plurality of slots along the axial direction. The opening centerlines of the plurality of slots are evenly distributed around the modulating ring rotor output shaft 9, and the second stator windings 11-2 are respectively embedded in the slots to form m' phase windings, where m' is a positive integer;

The second permanent magnet rotor 12 is composed of a second permanent magnet rotor core 12-2 and 2r second permanent magnet units 12-1, the second permanent magnet rotor core 12-2 is fixed on the modulation ring rotor output shaft 9, 2r The second permanent magnet units 12-1 are evenly distributed and arranged along the circumferential direction, and 2r second permanent magnet units 12-1 are embedded inside the second permanent magnet rotor core 12-2 or fixed outside the second permanent magnet rotor core 12-2 On the circular surface, the magnetization directions of two adjacent second permanent magnet units 12-1 are opposite, and r is a positive integer.

The axial-radial magnetic field modulation type brushless composite structure motor is divided into two parts in terms of achievable functions: one part is an axial dual-rotor motor; the other part is a radial torque regulating motor. The main function of the axial dual-rotor motor is to make the speed of the modulation ring rotor output shaft 9 independent of the speed of the permanent magnet rotor output shaft 1, and to enable the modulation ring rotor output shaft 9 to realize stepless speed change, while the modulation ring rotor output The shaft 9 outputs a corresponding torque in a certain proportion according to the input torque of the permanent magnet rotor output shaft 1 . The role of the radial torque regulating motor is to input the driving torque or braking torque according to the actual load, so that the final output torque of the modulation ring rotor output shaft 9 to the load does not depend on the input of the permanent magnet rotor output shaft 1. The torque realizes the flexible adjustment of the torque.

Let's first analyze the working principle of the axial dual-rotor motor in detail:

In this embodiment, there are two air gaps L1 in the structure of the axial double-rotor motor, and the mechanism of the magnetic field in these two air gaps is the same; The mechanism of the magnetic field in the air gap is also the same. This embodiment has a left-right symmetrical structure. The working principle of this embodiment will be described below by taking the left stator, the left end surface of the modulation ring rotor and the left side of the permanent magnet rotor as examples. The mechanism of action on the right side is the same as that on the left side.

First, the prime mover drives the first permanent magnet rotor 7 to rotate counterclockwise through the permanent magnet rotor output shaft 1 with the driving torque T, and its rotation speed is Ω ₁ . Viewed from the first permanent magnet rotor 7 to the first stator 5, the following The view orientation is the same in the description;

In order to balance the torque on the first permanent magnet rotor 7, an m-phase symmetrical alternating current is passed into the first stator winding 5-1 of the first stator 5 at this time, and a pole number of 2p is generated in the outer layer air gap L1 The stator rotating magnetic field, the rotating speed of the stator rotating magnetic field is Ω ₂ ;

The stator rotating magnetic field is modulated by the modulation ring rotor 6 to generate a rotating magnetic field with the same number of poles as the first permanent magnet rotor 7 in the inner layer air gap L2, and the inner modulation torque _T1 is generated through the interaction of the magnetic fields. Act on the first permanent magnet rotor 7, and the direction of the torque _T1 is clockwise;

According to the principle of moment balance, T ₁ =-T, the two are equal in magnitude and opposite in direction;

According to the principle of action force and reaction force, it can be seen that there is a moment T′ ₁ equal in size and opposite in direction to the inner modulation torque T 1 in the inner layer air gap L2, acting on the modulation ring rotor ₆ at the same time, and the direction of T′ ₁ is counterclockwise;

Simultaneously, the permanent magnet rotor rotating magnetic field produced by the first permanent magnet rotor 7 rotating at the speed Ω ₁ in the inner layer is through the modulation of the modulation ring rotor 6, and produces a rotating magnetic field with 2p poles in the outer layer air gap L1, which is consistent with the stator rotating magnetic field interaction, can generate an external modulation torque T ₂ , and act on the first stator 5, and the direction of the external modulation torque T ₂ is clockwise;

According to the principle of action force and reaction force, it can be seen that there is a moment T′ ₂ which is equal in size and opposite to the external modulation torque T 2 in the outer layer air gap L1 and acts on the modulation ring rotor ₆ simultaneously, and the direction is counterclockwise;

Therefore, the output torque T ₃ of the modulation ring rotor 6 satisfies the condition: T ₃ =T′ ₁ +T′ ₂ =-(T ₁ +T ₂ ), the rotation speed of the modulation ring rotor 6 is Ω ₃ , and the direction is reverse In the clockwise direction, the modulation ring rotor output shaft 9 drives the load with torque _T3 .

It can be seen from this that the output torque _T3 of the modulation ring rotor 6 is the combined torque of the internal modulation torque _T1 and the external modulation torque _T2 , while the output torque of the first permanent magnet rotor 7 is the internal modulation torque T3. Moment T ₁ . Therefore, the output torque T ₃ of the modulation ring rotor 6 will be greater than the output torque T ₁ of the first permanent magnet rotor 7 , and the two have a certain transformation ratio.

The double-rotor structure motor of the present invention can adjust the rotating speed by adjusting the frequency f of the current passing into the first stator winding 5-1, the rotational speed Ω ₂ of the stator rotating magnetic field, the rotational speed Ω ₃ of the modulation ring rotor 6 and the first The rotation speed Ω ₁ of the permanent magnet rotor 7 satisfies the relational expression:

${\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; hn</span>}}{<span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; hn</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; kq</span>}<span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; kq</span>}}{<span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; hn</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; kq</span>}<span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

The following is a detailed analysis of several special situations and the principles of their occurrence:

1. When the modulation ring rotor 6 is stationary, that is, Ω ₃ =0, if it is substituted into the formula (1), the following relationship holds:

${\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; hn</span>}}{<span\; class="notranslate">\; |</span>\mathrm{<span\; class="notranslate">\; hn</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; kq</span>}<span\; class="notranslate">\; |</span>}{\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

The principle of its generation is:

When the modulation ring rotor 6 is stationary, the first stator winding 5-1 passes m-phase symmetrical alternating current to generate the stator rotating magnetic field, and the first permanent magnet rotor 7 is also generated in space under the drive of the prime mover. The rotating magnetic field of the rotor with a rotation speed of Ω ₁ is obtained, and this working mode can be equivalently regarded as the working mode of the magnetic gear. According to the working principle of the magnetic gear, and the number of pole pairs p of the rotating magnetic field of the stator, the number of pole pairs n of the rotating magnetic field of the first permanent magnet rotor 7, and the number of magnetically conductive blocks q in the modulating ring rotor 6 satisfy the relational expression: p=|hn +kq|, it can be seen that: when the modulation ring rotor 6 is stationary, then the rotation speed Ω of the stator rotating magnetic field and the rotation speed Ω of the first permanent magnet rotor ₇ of the inner layer satisfy _the relational expression (2), thus it can be seen The rotational speed Ω ₂ of the stator rotating magnetic field has a certain transformation ratio relationship with the rotational speed Ω ₁ of the first permanent magnet rotor 7, and adjusting the rotational speed of any one of them will cause the rotational speed of the other to change.

2. The frequency f=0 of the current fed into the first stator winding 5-1, then when the first stator winding 5-1 is fed with a direct current, a constant magnetic field is generated and does not rotate, Ω ₂ =0, which is substituted into the formula ( 1), then the following relation exists:

${\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}<span\; class="notranslate">\; =</span>\frac{<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; hn</span>}}{\mathrm{<span\; class="notranslate">\; kq</span>}}{\mathrm{<span\; class="notranslate">\; \&Omega;</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; )</span>$

The principle of its generation is:

When the first stator winding 5-1 is fed with a direct current, a constant magnetic field is generated, and simultaneously the first permanent magnet rotor 7 generates a rotor rotating magnetic field with a rotation speed of Ω ₁ in space under the drive of the prime mover, and at this time it does not Without fixing the modulation ring rotor 6, this working mode can be equivalently regarded as another working mode of the magnetic gear. According to the working principle of the magnetic gear, and the number of pole pairs p of the rotating magnetic field of the stator, the number of pole pairs n of the rotating magnetic field of the first permanent magnet rotor 7, and the number of magnetically conductive blocks q in the modulating ring rotor 6 satisfy the relational expression: p=|hn +kq|, it can be seen that the modulation ring rotor 6 will rotate at a certain speed, and the rotation speed Ω ₃ of the modulation ring rotor 6 and the rotation speed Ω ₁ of the first permanent magnet rotor 7 will satisfy the relational expression (3), thus it can be seen The rotation speed Ω ₃ of the modulation ring rotor 6 has a certain transformation ratio with the rotation speed Ω ₁ of the first permanent magnet rotor 7, and adjusting the rotation speed of any one of them will cause the rotation speed of the other side to change;

The generation principle of the formula (1) is described below. If the constant magnetic field generated by the first stator 5 is "rotated", that is, when the first stator winding 5-1 is fed with a symmetrical alternating current to generate the stator rotating magnetic field, According to the principle of magnetic field modulation, it can be deduced that the rotation speed Ω ₂ of the stator rotating magnetic field, the rotation speed Ω ₃ of the modulation ring rotor 6 and the rotation speed Ω ₁ of the first permanent magnet rotor 7 satisfy the relational expression (1). Therefore, when the speed Ω ₁ of the first permanent magnet rotor 7 in the inner layer remains unchanged, the rotation speed Ω ₃ of the modulating ring rotor 6 can be adjusted by adjusting the rotation speed Ω ₂ of the stator's rotating magnetic field. It can be seen from this that the rotational speed _Ω3 of the modulation ring rotor 6 is jointly determined by the rotational speed _Ω1 of the first permanent magnet rotor 7 and the rotational speed _Ω2 of the stator's rotating magnetic field.

To sum up, the dual-rotor motor according to the present invention adjusts the frequency f of the current passed into the first stator winding 5-1 according to the formula (1) to adjust the rotational speed.

The following is a detailed analysis of the working principle of the radial torque regulating motor:

Since the second permanent magnet rotor 12 is fixed on the modulating ring rotor output shaft 9 , the second permanent magnet rotor 12 rotates at the speed of the modulating ring rotor output shaft 9 . When the second stator winding 11-2 is fed with multi-phase alternating current, a rotating magnetic field with the same number of poles as the magnetic field of the second permanent magnet rotor 12 is generated in space, and torque is generated through the interaction of the magnetic fields and acts on the second permanent magnet rotor 12 At the same time, it is transmitted to the modulation ring rotor output shaft 9.

When the torque input by the axial dual-rotor motor to the output shaft 9 of the modulating ring rotor is greater than the torque required by the load, the radial torque-regulated motor works in the power generation mode by controlling the current input to the second stator winding 11-2. At this time, the radial torque regulating motor generates a braking torque that acts on the output shaft 9 of the modulating ring rotor, thus ensuring that the input and output torques of the modulating ring rotor output shaft 9 are balanced. At this time, part of the energy input by the axial dual-rotor motor to the output shaft 9 of the modulating ring rotor is used to drive the load, and the other part is used to drive the radial torque regulating motor to generate electricity, so that the output shaft 9 of the modulating ring rotor is input and The output energy is balanced.

When the torque input by the axial dual-rotor motor to the output shaft 9 of the modulating ring rotor is less than the torque required by the load, the radial torque-adjusting motor can be operated under electric drive by controlling the current input to the second stator winding 11-2 At this time, the radial torque regulating motor generates driving torque to act on the output shaft 9 of the modulating ring rotor, thus ensuring that the input and output torques of the modulating ring rotor output shaft 9 are balanced. At this time, part of the energy driving the load comes from the energy input by the axial dual-rotor motor to the output shaft 9 of the modulating ring rotor, and the other part comes from the energy input by the radial torque regulating motor, so that the output shaft 9 of the modulating ring rotor is input in balance with the output energy.

When the torque input by the axial dual-rotor motor to the output shaft 9 of the modulation ring rotor is equal to the torque required by the load, the radial torque regulating motor does not work at this time. At this time, the energy for driving the load all comes from the energy input by the axial dual-rotor motor to the output shaft 9 of the modulating ring rotor, so that the energy input and output by the output shaft of the modulating ring rotor are balanced.

Specific Embodiment 2: The present embodiment will be described below in conjunction with FIG. 1 and FIG. 2. The difference between this embodiment and Embodiment 1 is that the second permanent magnet unit 12-1 is arranged on the second permanent magnet rotor core 12-2. On the outer circular surface, the second permanent magnet unit 12 - 1 is magnetized in the radial direction or parallel in the radial direction, and other structures and connection methods are the same as those in the first embodiment.

Specific Embodiment Three: The present embodiment will be described below in conjunction with FIG. 3 and FIG. 4. The difference between this embodiment and Embodiment 1 is that the second permanent magnet unit 12-1 is embedded in the second permanent magnet rotor core 12-2. In the outer circular surface of the second permanent magnet unit 12-1, the second permanent magnet unit 12-1 is magnetized in the radial direction or parallel in the radial direction, and other structures and connection methods are the same as those in the first embodiment.

Specific Embodiment Four: The present embodiment will be described below in conjunction with FIG. 5 and FIG. 6. The difference between this embodiment and Embodiment 1 is that the cross section of the second permanent magnet unit 12-1 is rectangular, and there are 2r second permanent magnets The unit 12-1 is radially distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center. The magnetization direction of the second permanent magnet unit 12-1 is parallel magnetization along the tangential direction. Other structures The connection method is the same as that in Embodiment 1.

In this embodiment, the permanent magnet rotor belongs to the magnetic accumulation structure. Under the parallel action of the adjacent permanent magnets of the permanent magnet rotor, two permanent magnets provide magnetic flux to the air gap under the magnetic field of each pole, which can increase the magnetic density of the air gap. Especially in the case of a large number of poles is more prominent.

Specific Embodiment Five: The present embodiment will be described below in conjunction with FIG. 7 and FIG. 8. The difference between this embodiment and Embodiment 1 is that the cross section of the second permanent magnet unit 12-1 is rectangular, and there are 2r second permanent magnets The units 12-1 are evenly distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center, and the angle between every two adjacent second permanent magnet units 12-1 is 360°/2r, The magnetization direction of the second permanent magnet unit 12 - 1 is parallel magnetization along the radial direction, and other structures and connection methods are the same as those in the first embodiment.

Specific Embodiment Six: The present embodiment will be described below in conjunction with FIG. 9 and FIG. 10. The difference between this embodiment and Embodiment 1 is that each second permanent magnet unit 12-1 consists of two permanent magnets with a rectangular cross section. Form a V-shaped structure, the magnetization directions of the two second permanent magnets are respectively perpendicular to the two sides of the V-shape, and point to the opening direction of the V-shape at the same time or deviate from the opening direction of the V-shape at the same time, 2r second V-shaped magnets The permanent magnet unit 12-1 is evenly distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center, the V-shaped opening opens radially outward, and other structures and connection methods are the same as those in the embodiment same.

In this embodiment, the permanent magnet rotor belongs to the magnetic accumulation structure. Under the parallel action of the V-shaped adjacent permanent magnets, two permanent magnets provide magnetic flux to the air gap under the magnetic field of each pole, which can increase the magnetic density of the air gap.

Specific Embodiment Seven: The present embodiment will be described below in conjunction with FIGS. 14 to 26. In this embodiment, the axial-radial magnetic field modulation type brushless composite structure motor, the housing 4 is divided into left and right parts by a separator, and the radial torque The adjusting motor and the axial double-rotor motor are respectively arranged in the left and right parts of the housing 4, and the axial double-rotor motor includes a first stator 5, a modulation ring rotor 6, a first permanent magnet rotor 7, and a permanent magnet rotor output Shaft 1 and modulating ring rotor output shaft 9, the radial torque regulating motor includes a second stator 11 and a second permanent magnet rotor 12, modulating ring rotor output shaft 9 simultaneously serves as the rotor shaft of the radial torque regulating motor,

The second stator 11 of the radial torque regulating motor is fixed on the inner wall of the left part of the housing 4, the second permanent magnet rotor 12 is fixed on the modulation ring rotor output shaft 9, the second stator 11 and the second permanent magnet There is an air gap L3 between the rotors 12 along the radial direction;

The outer ring end face of the first stator 5 of the axial double rotor motor is fixed on the inner wall of the separator on the right part of the housing 4, the first permanent magnet rotor 7 is fixed on the output shaft 1 of the permanent magnet rotor, and the permanent magnet rotor The output shaft 1 is rotationally connected to one end face of the housing 4 through the third bearing 8, the modulation ring rotor 6 is located between the first stator 5 and the first permanent magnet rotor 7, and one end of the modulation ring rotor output shaft 9 passes through the second The bearing 3 is rotatably connected with the first permanent magnet rotor 7, and the modulation ring rotor output shaft 9 is rotatably connected with the separator of the housing 4 through the first bearing 2, and is rotatably connected with the other end surface of the housing 4 through the fourth bearing 10. There is an air gap L1 between the modulation ring rotor 6 and the first stator 5; there is an air gap L2 between the modulation ring rotor 6 and the first permanent magnet rotor 7;

The first stator 5 is composed of a first stator core 5-2 and an m-phase first stator winding 5-1. When the first stator winding 5-1 is supplied with an m-phase symmetrical alternating current, a rotation of 2p poles is formed. Magnetic field, m and p are positive integers;

The first permanent magnet rotor 7 is composed of a first permanent magnet rotor core 7-2 and 2n first permanent magnet units 7-1, the first permanent magnet rotor core 7-2 is disc-shaped, and 2n first permanent magnet units 7-1 is arranged on the disk end face of the first permanent magnet rotor core 7-2 opposite to the modulation ring rotor 6, and is arranged uniformly in a radial shape centered on the output shaft 1 of the permanent magnet rotor. The first permanent magnet unit 7- 1. Parallel magnetization along the axial direction. The magnetization directions of two adjacent first permanent magnet units 7-1 are opposite. When the first permanent magnet rotor 7 rotates, a permanent magnet rotor end surface magnetic field with 2n poles is formed, and n is a positive integer. ;

The modulation ring rotor 6 is composed of a rotor support 6-3, a 2q magnetic block 6-1 and a 2q insulating block 6-2. The rotor support 6-3 is a closed frame made of two round end faces and a ring, each q blocks of magnetic conductive blocks 6-1 and q blocks of insulating blocks 6-2 are arranged staggeredly on each circular end face, and are evenly arranged radially with the output shaft 1 of the permanent magnet rotor as the center; the magnetic conductive blocks 6-1 are made of soft magnetic composite Material, silicon steel sheet, solid iron or soft ferrite;

And the relationship p=|hn+kq| is satisfied, where h is a positive odd number and k is an integer.

The structure of the motor in this embodiment is an axial unilateral type, so that the volume of the motor is smaller and the structure is more compact.

The first stator core 5-2 is circular, and the outer ring end face of the first stator core 5-2 is fixed on the partition inner wall of the right part of the housing 4, and the inner circle of the first stator core 5-2 A plurality of slots are opened radially on the end face of the ring, and the centerlines of the openings of the plurality of slots are evenly distributed radially around the output shaft 1 of the permanent magnet rotor, and the first stator windings 5-1 are respectively embedded in the slots An m-phase winding is formed, where m is a positive integer.

The first permanent magnet unit 7-1 provided on the first permanent magnet rotor 7 has two modes:

The first type: 2n first permanent magnet units 7 - 1 embedded in the end surface of each disk of the first permanent magnet unit 7 - 1 are uniformly arranged radially with the output shaft 1 of the permanent magnet rotor as the center.

The second type: 2n first permanent magnet units 7 - 1 that are surface-mounted on each disk end surface of the first permanent magnet unit 7 - 1 are evenly arranged radially with the output shaft 1 of the permanent magnet rotor as the center.

The second stator 11 is composed of a second stator core 11-1 and an m′-phase second stator winding 11-2. The second stator core 11-1 is circular, and its inner circular surface has a plurality of slots along the axial direction. The opening centerlines of the plurality of slots are evenly distributed around the modulating ring rotor output shaft 9, and the second stator windings 11-2 are respectively embedded in the slots to form m' phase windings, where m' is a positive integer;

The second permanent magnet rotor 12 is composed of a second permanent magnet rotor core 12-2 and 2r second permanent magnet units 12-1, the second permanent magnet rotor core 12-2 is fixed on the modulation ring rotor output shaft 9, 2r The second permanent magnet units 12-1 are evenly distributed and arranged along the circumferential direction, and 2r second permanent magnet units 12-1 are embedded inside the second permanent magnet rotor core 12-2 or fixed outside the second permanent magnet rotor core 12-2 On the circular surface, the magnetization directions of two adjacent second permanent magnet units 12-1 are opposite, and r is a positive integer.

The principle of the motor described in this embodiment is similar to that described in Embodiment 1, and will not be repeated here.

Embodiment 8: The present embodiment will be described below in conjunction with FIG. 14 and FIG. 15. The difference between this embodiment and Embodiment 1 is that the second permanent magnet unit 12-1 is arranged on the second permanent magnet rotor core 12-2. On the outer circular surface, the second permanent magnet unit 12 - 1 is magnetized in the radial direction or parallel in the radial direction, and other structures and connection methods are the same as those in the seventh embodiment.

Ninth specific embodiment: The present embodiment will be described below in conjunction with Fig. 16 and Fig. 17. The difference between this embodiment and Embodiment 1 is that the second permanent magnet unit 12-1 is embedded in the second permanent magnet rotor core 12-2. In the outer circular surface of the second permanent magnet unit 12-1, the second permanent magnet unit 12-1 is magnetized radially or parallelly. Other structures and connection methods are the same as those of the seventh embodiment.

Specific Embodiment Ten: The present embodiment will be described below in conjunction with FIG. 18 and FIG. 19. The difference between this embodiment and Embodiment 1 is that the cross section of the second permanent magnet unit 12-1 is rectangular, and there are 2r second permanent magnets. The unit 12-1 is radially distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center. The magnetization direction of the second permanent magnet unit 12-1 is parallel magnetization along the tangential direction. Other structures The connection mode is the same as that of Embodiment 7.

In this embodiment, the permanent magnet rotor belongs to the magnetic accumulation structure. Under the parallel action of the adjacent permanent magnets of the permanent magnet rotor, two permanent magnets provide magnetic flux to the air gap under the magnetic field of each pole, which can increase the magnetic density of the air gap. Especially in the case of a large number of poles is more prominent.

Specific Embodiment Eleven: The present embodiment will be described below with reference to Figure 20 and Figure 21. The magnet units 12-1 are evenly distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center, and the angle between every two adjacent second permanent magnet units 12-1 is 360°/2r , the magnetization direction of the second permanent magnet unit 12 - 1 is parallel magnetization along the radial direction, and other structures and connection methods are the same as those in the first embodiment.

Specific Embodiment Twelve: The present embodiment will be described below in conjunction with Fig. 22 and Fig. 23. The difference between this embodiment and Embodiment 1 is that each second permanent magnet unit 12-1 consists of two permanent magnets with a rectangular cross section. The magnets form a V-shaped structure. The magnetization directions of the two second permanent magnets are respectively perpendicular to the two sides of the V-shape, and point to the opening direction of the V-shape at the same time or deviate from the opening direction of the V-shape at the same time. The two permanent magnet units 12-1 are evenly distributed inside the second permanent magnet rotor core 12-2 with the modulation ring rotor output shaft 9 as the center, and the V-shaped opening opens radially outward. Other structures and connection methods and implementation methods One is the same.

In this embodiment, the permanent magnet rotor belongs to the magnetic accumulation structure. Under the parallel action of the V-shaped adjacent permanent magnets, two permanent magnets provide magnetic flux to the air gap under the magnetic field of each pole, which can increase the magnetic density of the air gap.

Claims (10)

1. axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, housing (4) is divided into left and right sides two parts by separator, axially double-rotor machine and radially the torque adjustment motor be separately positioned in left and right sides two parts of housing (4), described axial double-rotor machine comprises two first stators (5), modulation rotor (6), first p-m rotor (7), p-m rotor output shaft (1) and modulation rotor output shaft (9), described radially torque adjustment motor comprises second stator (11) and second p-m rotor (12), modulation rotor output shaft (9) conduct simultaneously is the armature spindle of torque adjustment motor radially

Second stator (11) of described radially torque adjustment motor is fixed on the madial wall of housing (4) right half, second p-m rotor (12) is fixed on the modulation rotor output shaft (9), between second stator (11) and second p-m rotor (12) air gap L3 is arranged radially;

The outer toroid end face of one first stator (5) is fixed on the left side inwall of housing (4) left half in two first stators (5) of described axial double-rotor machine, the outer toroid end face of another first stator (5) is fixed on the right side inwall of housing (4) left half, first p-m rotor (7) is fixed on the p-m rotor output shaft (1), p-m rotor output shaft (1) is rotationally connected by the side end face of clutch shaft bearing (2) with housing (4), and be rotationally connected with modulation rotor (6) by second bearing (3) and the 4th bearing (10), modulation rotor (6) is positioned between two first stators (5), the outside of first p-m rotor (7), one end of modulation rotor output shaft (9) is fixed on the modulation rotor (6), and modulation rotor output shaft (9) is rotationally connected by the separator of the 3rd bearing (8) with housing (4), be rotationally connected by the 5th bearing (13) another end face with housing (4); Between the annulus end face of modulation rotor (6) and first stator (5) air gap L1 is arranged; Between modulation rotor (6) and first p-m rotor (7) air gap L2 is arranged,

First stator (5) by first stator core (5-2) and m mutually first stator winding (5-1) constitute, when first stator winding (5-1) is connected with the symmetrical alternating current of m, form the rotating magnetic field of 2p number of poles, m, p are positive integer;

First p-m rotor (7) is made of the first p-m rotor iron core (7-2) and a plurality of first permanent magnet unit (7-1), the first p-m rotor iron core (7-2) is a disc, be symmetrical arranged first permanent magnet unit (7-1) on the two side discs end faces of the first p-m rotor iron core (7-2), the 2n that is provided with on each disk end face first permanent magnet unit (7-1) be that the center is and radiates wire and evenly arrange with p-m rotor output shaft (1), first permanent magnet unit (7-1) is parallel magnetization vertically, the magnetizing direction of adjacent two first permanent magnet units of same disk end face (7-1) is opposite, two first permanent magnet units (7-1) magnetizing direction of position symmetry is identical on the two side discs end faces, during first p-m rotor (7) rotation, form the p-m rotor magnetic fidle of end of 2n number of poles, n is a positive integer;

Modulation rotor (6) is made of rotor field spider (6-3), 2q piece magnetic inductive block (6-1) and 2q piece collets (6-2), rotor field spider (6-3) is by two nose circle faces and the closed frame that annulus constitutes, be crisscross arranged on each nose circle face q piece magnetic inductive block (6-1) and q piece collets (6-2), and be that the center is the radiation wire and evenly arranges with p-m rotor output shaft (1);

And satisfy the p=|hn+kq| relational expression and set up, wherein, h is a positive odd number, and k is an integer.

2. according to claim 1 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, first stator core (5-2) is an annular, the outer toroid end face of first stator core (5-2) is fixed on the end face inwall of housing (4) left half, radially have a plurality of grooves on the interior annulus end face of first stator core (5-2), the open centre line of described a plurality of grooves with p-m rotor output shaft (1) be the center be the radiation wire evenly distribute, first stator winding (5-1) embeds respectively and forms the m phase winding in the described groove, and m is a positive integer.

3. according to claim 1 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, second stator (11) by second stator core (11-1) and m ' mutually second stator winding (11-2) constitute, second stator core (11-1) is an annular, its internal circular surfaces has a plurality of grooves vertically, the open centre line of described a plurality of grooves evenly distributes around modulation rotor output shaft (9), second stator winding (11-2) embeds respectively and forms m ' phase winding in the described groove, and m ' is a positive integer;

Second p-m rotor (12) is made of the second p-m rotor iron core (12-2) and 2r second permanent magnet unit (12-1), the second p-m rotor iron core (12-2) is fixed on the modulation rotor output shaft (9), 2r second permanent magnet unit (12-1) is along the circumferential direction evenly arranged evenly, individual second permanent magnet unit (12-1) of 2r embeds the second p-m rotor iron core (12-2) inside or is fixed on the outer round surface of the second p-m rotor iron core (12-2), the magnetizing direction of adjacent two second permanent magnet units (12-1) is opposite, and r is a positive integer.

4. according to claim 3 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that second permanent magnet unit (12-1) is provided with by in following four kinds of modes any one:

First kind: second permanent magnet unit (12-1) is arranged on the outer round surface of the second p-m rotor iron core (12-2), and second permanent magnet unit (12-1) radially magnetizes;

Second kind: second permanent magnet unit (12-1) embeds and is arranged in the outer round surface of the second p-m rotor iron core (12-2), and second permanent magnet unit (12-1) radially magnetizes;

The third: the cross section of second permanent magnet unit (12-1) is a rectangle, 2r second permanent magnet unit (12-1) be the inner radiation shape distribution of center at the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), and the magnetizing direction of second permanent magnet unit (12-1) is parallel magnetization tangentially;

The 4th kind: the cross section of second permanent magnet unit (12-1) is a rectangle, 2r second permanent magnet unit (12-1) is that the center is uniform in the inside of the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), the angle of every adjacent two second permanent magnet units (12-1) is 360 °/2r, and the magnetizing direction of second permanent magnet unit (12-1) is parallel magnetization radially.

5. according to claim 3 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, the permanent magnet that each second permanent magnet unit (12-1) is a rectangle by two cross sections constitutes V font structure, the magnetizing direction of two permanent magnets is respectively perpendicular to two limits of V font, and point to the opening direction of V font simultaneously or deviate from the opening direction of V font simultaneously, second permanent magnet unit (12-1) of 2r V font is the inside that the center is distributed on the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), and the opening of V font is opening outwardly radially.

6. axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, housing (4) is divided into left and right sides two parts by separator, radially torque adjustment motor and axial double-rotor machine are separately positioned in left and right sides two parts of housing (4), described axial double-rotor machine comprises first stator (5), modulation rotor (6), first p-m rotor (7), p-m rotor output shaft (1) and modulation rotor output shaft (9), described radially torque adjustment motor comprises second stator (11) and second p-m rotor (12), modulation rotor output shaft (9) conduct simultaneously is the armature spindle of torque adjustment motor radially

Second stator (11) of described radially torque adjustment motor is fixed on the madial wall of housing (4) left half, second p-m rotor (12) is fixed on the modulation rotor output shaft (9), between second stator (11) and second p-m rotor (12) air gap L3 is arranged radially;

The outer toroid end face of first stator (5) of described axial double-rotor machine is fixed on the separator inwall of housing (4) right half, first p-m rotor (7) is fixed on the p-m rotor output shaft (1), p-m rotor output shaft (1) is rotationally connected by the side end face of the 3rd bearing (8) with housing (4), modulation rotor (6) is positioned between first stator (5) and first p-m rotor (7), one end of modulation rotor output shaft (9) is rotationally connected by second bearing (3) and first p-m rotor (7), and modulation rotor output shaft (9) is rotationally connected by the separator of clutch shaft bearing (2) with housing (4), be rotationally connected by the opposite side end face of the 4th bearing (10) with housing (4); Between modulation rotor (6) and first stator (5) air gap L1 is arranged; Between modulation rotor (6) and first p-m rotor (7) air gap L2 is arranged;

First stator (5) by first stator core (5-2) and m mutually first stator winding (5-1) constitute, when first stator winding (5-1) is connected with the symmetrical alternating current of m, form the rotating magnetic field of 2p number of poles, m, p are positive integer;

First p-m rotor (7) is made of the first p-m rotor iron core (7-2) and 2n first permanent magnet unit (7-1), the first p-m rotor iron core (7-2) is a disc, 2n first permanent magnet unit (7-1) is arranged on the disk end face of the first p-m rotor iron core (7-2) relative with modulating rotor (6), and with p-m rotor output shaft (1) be the center be the radiation wire evenly arrange, first permanent magnet unit (7-1) is parallel magnetization vertically, the magnetizing direction of adjacent two first permanent magnet units (7-1) is opposite, during first p-m rotor (7) rotation, form the p-m rotor magnetic fidle of end of 2n number of poles, n is a positive integer;

Modulation rotor (6) is made of rotor field spider (6-3), 2q piece magnetic inductive block (6-1) and 2q piece collets (6-2), rotor field spider (6-3) is by two nose circle faces and the closed frame that annulus constitutes, be crisscross arranged on each nose circle face q piece magnetic inductive block (6-1) and q piece collets (6-2), and be that the center is the radiation wire and evenly arranges with p-m rotor output shaft (1);

And satisfy the p=|hn+kq| relational expression and set up, wherein, h is a positive odd number, and k is an integer.

7. according to claim 6 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, first stator core (5-2) is an annular, the outer toroid end face of first stator core (5-2) is fixed on the separator inwall of housing (4) right half, radially have a plurality of grooves on the interior annulus end face of first stator core (5-2), the open centre line of described a plurality of grooves with p-m rotor output shaft (1) be the center be the radiation wire evenly distribute, first stator winding (5-1) embeds respectively and forms the m phase winding in the described groove, and m is a positive integer.

8. according to claim 6 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, second stator (11) by second stator core (11-1) and m ' mutually second stator winding (11-2) constitute, second stator core (11-1) is an annular, its internal circular surfaces has a plurality of grooves vertically, the open centre line of described a plurality of grooves evenly distributes around modulation rotor output shaft (9), second stator winding (11-2) embeds respectively and forms m ' phase winding in the described groove, and m ' is a positive integer;

Second p-m rotor (12) is made of the second p-m rotor iron core (12-2) and 2r second permanent magnet unit (12-1), the second p-m rotor iron core (12-2) is fixed on the modulation rotor output shaft (9), 2r second permanent magnet unit (12-1) is along the circumferential direction evenly arranged evenly, individual second permanent magnet unit (12-1) of 2r embeds the second p-m rotor iron core (12-2) inside or is fixed on the outer round surface of the second p-m rotor iron core (12-2), the magnetizing direction of adjacent two second permanent magnet units (12-1) is opposite, and r is a positive integer.

9. according to claim 8 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that second permanent magnet unit (12-1) is provided with by in following four kinds of modes any one:

First kind: second permanent magnet unit (12-1) is arranged on the outer round surface of the second p-m rotor iron core (12-2), and second permanent magnet unit (12-1) radially magnetizes;

Second kind: second permanent magnet unit (12-1) embeds and is arranged in the outer round surface of the second p-m rotor iron core (12-2), and second permanent magnet unit (12-1) radially magnetizes;

The third: the cross section of second permanent magnet unit (12-1) is a rectangle, 2r second permanent magnet unit (12-1) be the inner radiation shape distribution of center at the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), and the magnetizing direction of second permanent magnet unit (12-1) is parallel magnetization tangentially;

The 4th kind: the cross section of second permanent magnet unit (12-1) is a rectangle, 2r second permanent magnet unit (12-1) is that the center is uniform in the inside of the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), the angle of every adjacent two second permanent magnet units (12-1) is 360 °/2r, and the magnetizing direction of second permanent magnet unit (12-1) is parallel magnetization radially.

10. according to claim 8 axially-the radial magnetic field modulation type brushless composite structure motor, it is characterized in that, the permanent magnet that each second permanent magnet unit (12-1) is a rectangle by two cross sections constitutes V font structure, the magnetizing direction of two permanent magnets is respectively perpendicular to two limits of V font, and point to the opening direction of V font simultaneously or deviate from the opening direction of V font simultaneously, second permanent magnet unit (12-1) of 2r V font is the inside that the center is distributed on the second p-m rotor iron core (12-2) with modulation rotor output shaft (9), and the opening of V font is opening outwardly radially.

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