CN101951088B - Radial-axis radial magnetic field modulation type brushless composite structure motor - Google Patents

Abstract

The invention discloses a radial-shaft radial magnetic field modulated brushless composite structure motor, belonging to the field of a motor, and solving the problems that the system has heavy volume, complex structure, higher price, restricted performance, and can not effectively output the power as the existing engines and other system components in serial-type, parallel-type, parallel-serial drive devices can not be simply and efficiently matched. A radial double rotor and a shaft radial torque adjusting motor are arranged in the shell of the motor in parallel; the permanent magnet rotor of the radial double rotor is driven by an original engine to form 2n poloidal magnetic field, and the stator forms a 2p poloidal magnetic field; the needed rotating speed is output by the output shaft of a modulated ring rotor with q numbered magnetic conducting blocks and insulation blocks, and p is equal to the absolute value of the sum of hn and kq; the output rotating speed thereof dose not depend on the input rotating speed; and the stepless speed change is realized; the shaft radial torque adjusting motor inputs driving torque or braking torque according to the actual load requirement, thus satisfying the actual torque requirement, and leading the energy input and output by the output shaft of the modulated ring rotor to be balanced.

Description

Radial-axis radial magnetic field modulation type brushless composite structure motor

technical field

The invention relates to a radial-axis 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, a radial-axis radial magnetic field modulation type brushless composite structure motor is provided.

In the radial-axis radial magnetic field modulation type brushless composite structure motor of the present invention, a radial double-rotor motor and a shaft-radial torque adjustment motor are arranged side by side in the housing, and the radial double-rotor motor includes a first stator, a modulation The ring rotor, the first permanent magnet rotor, the output shaft of the permanent magnet rotor and the output shaft of the modulating ring rotor. to the rotor shaft of the torque regulating motor,

The second stator of the shaft radial torque adjustment motor is fixed on the inner wall 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, and an air gap L4 in the axial direction;

The first stator of the radial double rotor motor is fixed on the inner wall of the casing, the first permanent magnet rotor is fixed on the output shaft of the permanent magnet rotor, and the modulation ring rotor is located between the first stator and the first permanent magnet rotor Between, the output shaft of the permanent magnet rotor is rotationally connected with the casing through the first bearing, and the output shaft of the permanent magnet rotor is rotationally connected with the modulating ring rotor through the second bearing and the fourth bearing, and one end of the modulating ring rotor output shaft is fixed on the modulating ring rotor , and the output shaft of the modulating ring rotor is rotationally connected with the housing through the third bearing; there is an air gap L1 between the modulating ring rotor and the first stator; there is an air gap L2 between the modulating 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 the first permanent magnet rotor core and 2n first permanent magnet units, the 2n first permanent magnet units are evenly distributed along the circumferential direction, and the 2n first permanent magnet units are embedded in the first permanent magnet rotor core Inside or fixed on the outer surface of the first permanent magnet rotor core, the magnetization directions of two adjacent first permanent magnet units 7-1 are opposite, and when the first permanent magnet rotor rotates, a permanent magnet rotor with 2n poles is formed Surface magnetic field, n is a positive integer;

The modulating ring rotor is composed of a rotor bracket, q pieces of magnetic conductive blocks and q pieces of insulating blocks, and the outer surface of the rotor bracket is alternately arranged with magnetic conductive blocks and insulating blocks along the circumferential direction;

And the formula 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 such as the decrease in operating efficiency, the decrease in reliability, and the frequent maintenance of brushes and other components caused by the use of a brush slip ring feed structure for motors with a composite structure of brushes.

Description of drawings

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

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

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

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

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

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

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

Fig. 8 is the F-F sectional view of Fig. 7;

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

Fig. 10 is a G-G sectional view of Fig. 9;

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

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

Figure 13 is a schematic diagram of the present invention.

Detailed ways

Specific Embodiment 1: The present embodiment will be described below with reference to FIGS. The motor includes a first stator 5, a modulating ring rotor 6, a first permanent magnet rotor 7, a permanent magnet rotor output shaft 1 and a modulating ring rotor output shaft 9, and the shaft radial torque adjustment motor includes a second stator 11 and a first Two permanent magnet rotors 12, the modulating ring rotor output shaft 9 is simultaneously used as the rotor shaft of the shaft radial torque regulating motor,

The second stator 11 of the axial radial torque regulating motor is fixed on the inner wall of the housing 4, and 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 rotor There is an air gap L3 along the radial direction between 12, and an air gap L4 along the axial direction;

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 the outer ring surface of the second stator core 11-1 is fixed on On the inner side wall of the housing 4, the outer side wall of the second stator core 11-1 is provided with a plurality of annular grooves, and the plurality of annular grooves are evenly distributed around the modulation ring rotor output shaft 9, and the second stator winding 11 -2 are respectively embedded in the annular groove to form an m' phase winding, where m' is a positive integer;

The second permanent magnet rotor is composed of a second permanent magnet rotor iron core 12-2 and multiple sets of permanent magnet units. The second permanent magnet rotor iron core 12-2 is in the shape of a thick disk and is fixed on the modulation ring rotor output shaft 9. The second An annular groove is formed on the outer peripheral side wall of the permanent magnet rotor core 12-2, the radial section of the groove is square, and multiple groups of second permanent magnet units are arranged on the inner surface of the groove, each group The permanent magnet unit is composed of a bottom permanent magnet 12-1 and two side permanent magnets 12-3. Multiple sets of second permanent magnet units are evenly distributed along the circumferential direction with the modulation ring rotor output shaft 9 as the center. The permanent magnet units are arranged on the second On the surface of the permanent magnet rotor core 12-2 or embedded in the surface of the second permanent magnet rotor core 12-2, each group of permanent magnet units forms a magnetic field pointing to the opening of the groove or away from the opening of the groove. The magnetic direction is opposite,

The bottom permanent magnet 12-1 is magnetized radially or parallel to the radial direction, the side permanent magnet 12-3 is axially magnetized, and the magnetization directions of the two side permanent magnets 12-3 in the same group of permanent magnet units are opposite .

The first stator 5 of the radial double-rotor motor is fixed on the inner wall of the housing 4, the first permanent magnet rotor 7 is fixed on the output shaft 1 of the permanent magnet rotor, and the modulation ring rotor 6 is located between the first stator 5 and the Between the first permanent magnet rotor 7, the permanent magnet rotor output shaft 1 is rotationally connected with the housing 4 through the first bearing 2, and the permanent magnet rotor output shaft 1 rotates with the modulation ring rotor 6 through the second bearing 3 and the fourth bearing 10 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 is rotationally connected with the housing 4 through the third bearing 8; between the modulating ring rotor 6 and the first stator 5 Air gap L1; 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 stator core 5-2 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 permanent magnet rotor output shaft 1. The first stator winding 5-1 are respectively embedded in the slots to form m-phase windings.

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 2n first permanent magnet units 7-1 are evenly distributed along the circumferential direction, and the 2n first permanent magnet units The permanent magnet unit 7-1 is embedded inside the first permanent magnet rotor core 7-2 or fixed on the outer circular surface of the first permanent magnet rotor core 7-2, and the magnetization of two adjacent first permanent magnet units 7-1 The direction is opposite, when the first permanent magnet rotor 7 rotates, a permanent magnet rotor surface magnetic field with 2n poles is formed, and n is a positive integer;

Modulating ring rotor 6 is composed of rotor support 6-3, q block magnetic block 6-1 and q block insulating block 6-2. Block 6-2; Magnetic block 6-1 is made of soft magnetic composite material, silicon steel sheet, solid iron or soft ferrite;

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

In order to illustrate the working principle of the present invention, this embodiment is described by taking the structure shown in Figure 1 as an example. In order to draw the details of each part, the first permanent magnet rotor 7 and the modulation ring rotor 6 shown in Figure 1 are both made In order to reduce the scale, please refer to Figure 21 for the specific schematic diagram.

The radial-axis radial magnetic field modulation type brushless composite structure motor is divided into two parts in terms of achievable functions: one is a radial double-rotor motor; the other is a shaft-radial torque regulating motor. The main function of the radial double-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 function of the axial radial torque adjustment motor is to input the driving torque or braking torque according to the actual load, so that the final output torque of the modulating ring rotor output shaft 9 to the load does not depend on the output torque of the permanent magnet rotor output shaft 1. The input torque realizes the flexible adjustment of the torque.

The following is a detailed analysis of the working principle of the radial dual-rotor motor:

First, the prime mover drives the first permanent magnet rotor 7 to rotate counterclockwise with the drive torque T through the permanent magnet rotor output shaft 1, and its rotational speed is Ω ₁ ;

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 formula:

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

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 formula holds true:

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

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 stator rotating magnetic field, 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 formula: p=|hn+ kq|, it can be seen that: when the modulation ring rotor 6 is stationary, the rotational speed Ω ₂ of the stator rotating magnetic field and the rotational speed Ω ₁ of the first permanent magnet rotor 7 of the inner layer satisfy the formula (2), thus it can be seen that the stator rotates The rotation speed Ω ₂ of the magnetic field has a certain transformation ratio relationship 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 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 formula 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 stator rotating magnetic field, 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 formula: p=|hn+ kq|, it can be seen that the modulation ring rotor 6 will rotate at a certain speed, 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 formula (3), thus it can be known that the modulation ring The rotational speed Ω ₃ of the rotor 6 has a certain transformation ratio with the rotational speed Ω ₁ of the first permanent magnet rotor 7, and adjusting the rotational speed of any one of the two will cause the rotational speed of the other 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 formula (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 radial double-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 axial radial torque adjustment 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 radial dual-rotor motor to the output shaft 9 of the modulating ring rotor is greater than the torque required by the load, by controlling the current input to the second stator winding 11-2, the axial radial torque-adjusting motor works in power generation In the braking state, the shaft radial torque regulating motor produces 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 radial 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 shaft radial torque regulating motor to generate electricity, 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 radial dual-rotor motor to the output shaft 9 of the modulating ring rotor is less than the torque required by the load, by controlling the current input to the second stator winding 11-2, the shaft radial torque adjustment motor works in electric mode In the driving state, the axial 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 radial double-rotor motor to the output shaft 9 of the modulating ring rotor, and the other part comes from the energy input by the axial radial torque adjustment motor, so that the output shaft 9 of the modulating ring rotor The input and output energies are in balance.

When the torque input by the radial dual-rotor motor to the output shaft 9 of the modulation ring rotor is equal to the torque required by the load, the shaft radial torque regulating motor does not work at this time. At this time, all the energy for driving the load comes from the energy input by the radial double-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 first permanent magnet unit 7-1 is arranged on the first permanent magnet rotor core 7-2. On the outer circular surface, the first permanent magnet unit 7 - 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 first permanent magnet unit 7-1 is embedded in the first permanent magnet rotor core 7-2. In the outer circular surface of the first permanent magnet unit 7-1, the first permanent magnet unit 7-1 is magnetized radially or radially parallel, and other structures and connection methods are the same as those of 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 first permanent magnet unit 7-1 is rectangular, and there are 2n first permanent magnets The unit 7-1 is radially distributed inside the first permanent magnet rotor core 7-2 with the permanent magnet rotor output shaft 1 as the center. The magnetization direction of the first permanent magnet unit 7-1 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.

Embodiment 5: This 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 first permanent magnet unit 7-1 is rectangular, and there are 2n first permanent magnets The units 7-1 are evenly distributed inside the first permanent magnet rotor core 7-2 with the permanent magnet rotor output shaft 1 as the center, and the angle between every two adjacent first permanent magnet units 7-1 is 360°/2n, The magnetization direction of the first permanent magnet unit 7 - 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 first permanent magnet unit 7-1 consists of two first permanent magnet units with a rectangular cross section. The permanent magnets form a V-shaped structure. The magnetization directions of the two 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 first of the 2n V-shaped The permanent magnet unit 7-1 is evenly distributed inside the first permanent magnet rotor core 7-2 with the permanent magnet rotor output shaft 1 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.

Claims (9)

1. radially-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, in housing (4), be set side by side with radially double-rotor machine and the diameter of axle to the torque adjustment motor, described radially 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), the described diameter of axle comprises second stator (11) and second p-m rotor (12) to the torque adjustment motor, modulation rotor output shaft (9) is simultaneously as the armature spindle of the diameter of axle to the torque adjustment motor

The described diameter of axle is fixed on the madial wall of housing (4) to second stator (11) of torque adjustment motor, 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, air gap (L4) is in axial direction arranged;

First stator (5) of described radially double-rotor machine is fixed on the madial wall of housing (4), first p-m rotor (7) is fixed on the p-m rotor output shaft (1), modulation rotor (6) is positioned between first stator (5) and first p-m rotor (7), p-m rotor output shaft (1) is rotationally connected by clutch shaft bearing (2) and housing (4), and p-m rotor output shaft (1) is rotationally connected with modulation rotor (6) by second bearing (3) and the 4th bearing (10), 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 3rd bearing (8) and 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), 2n first permanent magnet unit (7-1) is along the circumferential direction evenly arranged evenly, individual first permanent magnet unit (7-1) of 2n embeds the first p-m rotor iron core (7-2) inside or is fixed on the outer round surface of the first p-m rotor iron core (7-2), 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 Surface field of 2n number of poles, n is a positive integer;

Modulation rotor (6) is by rotor field spider (6-3), q piece magnetic inductive block (6-1) and q piece collets (6-2) formation, rotor field spider (6-3) outer round surface along the circumferential direction be crisscross arranged magnetic inductive block (6-1) and collets (6-2);

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

2. radially according to claim 1-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, first permanent magnet unit (7-1) is arranged on the outer round surface of the first p-m rotor iron core (7-2), and first permanent magnet unit (7-1) radially magnetizes.

3. radially according to claim 1-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, first permanent magnet unit (7-1) embeds and is arranged in the outer round surface of the first p-m rotor iron core (7-2), and first permanent magnet unit (7-1) radially magnetizes.

4. radially according to claim 1-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, the permanent magnet that each first permanent magnet unit (7-1) 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, first permanent magnet unit (7-1) of 2n V font is the inside that the center is distributed on the first p-m rotor iron core (7-2) with p-m rotor output shaft (1), and the opening of V font is opening outwardly radially.

5. radially according to claim 1-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, first stator core (5-2) 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 p-m rotor output shaft (1), and first stator winding (5-1) embeds respectively and forms the m phase winding in the described groove.

6. radially according to claim 1-diameter of axle is characterized in that to magnetic field modulation type brushless composite structure motor magnetic inductive block (6-1) is selected soft-magnetic composite material for use.

7. radially according to claim 1-diameter of axle is characterized in that to magnetic field modulation type brushless composite structure motor magnetic inductive block (6-1) is selected silicon steel sheet, solid-iron or soft magnetic ferrite for use.

8. radially according to claim 1-diameter of axle is to 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, the outer ring surface of second stator core (11-1) is fixed on the madial wall of housing (4), the lateral wall of second stator core (11-1) has a plurality of annular grooves, described a plurality of annular groove is that the center evenly distributes with modulation rotor output shaft (9), second stator winding (11-2) embeds respectively and forms m ' phase winding in the described annular groove, and m ' is a positive integer.

9. radially according to claim 1-diameter of axle is to magnetic field modulation type brushless composite structure motor, it is characterized in that, second p-m rotor is made of the second p-m rotor iron core (12-2) and many group permanent magnet units, the second p-m rotor iron core (12-2) is a thick disk shape, be fixed on the modulation rotor output shaft (9), have toroidal cavity on the excircle sidewall of the second p-m rotor iron core (12-2), the radial section of groove is square, described groove medial surface is provided with many group second permanent magnet units, every group of permanent magnet unit is made of bottom surface permanent magnet (12-1) and two side permanent magnets (12-3), many group second permanent magnet units are that the center along the circumferential direction evenly distributes with modulation rotor output shaft (9), permanent magnet unit is arranged on second p-m rotor iron core (12-2) surface or embeds in second p-m rotor iron core (12-2) surface, every group of permanent magnet unit forms and points to slot opening or deviate from the magnetic field of slot opening, the magnetizing direction of two adjacent groups permanent magnet unit is opposite

Bottom surface permanent magnet (12-1) radially magnetizes, side permanent magnet (12-3) axial charging, and the magnetizing direction of the two side permanent magnets (12-3) in the permanent magnet unit is opposite on the same group.

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