CN111900848A

CN111900848A - Three-winding axial magnetic field multiphase flywheel pulse generator system

Info

Publication number: CN111900848A
Application number: CN202010800074.9A
Authority: CN
Inventors: 寇宝泉; 张浩泉; 宋得雪; 张赫
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-06
Anticipated expiration: 2040-08-11
Also published as: CN111900848B

Abstract

A three-winding axial magnetic field multiphase flywheel pulse generator system belongs to the field of motors and solves the problems that an existing flywheel pulse generator set is long in shaft system and low in rotating speed, an excitation winding is arranged on a rotor of a pulse generator, a multistage rotating rectifier is adopted for excitation, the reliability of the system is low, and the generator system achieved by the flywheel pulse generator set is low in power density, energy density and size weight. The generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, a direct current output power converter, an electric winding power converter and a multiphase rectifier; an outgoing line of a magnetic field control winding of the synchronous motor is connected with the output end of the direct current output power converter; an outgoing line of an electric winding of the synchronous motor is connected with an output end of the armature winding power converter; the outgoing line of the generating winding of the synchronous motor is connected with the alternating current input end of the multi-phase rectifier. The invention has good application prospect in the fields of nuclear fusion test technology, plasma and electromagnetic emission technology and the like.

Description

Three-winding axial magnetic field multiphase flywheel pulse generator system

Technical Field

The invention belongs to the field of motors.

Background

The flywheel pulse generator is a flywheel energy storage device which utilizes the large inertia storage energy of a shafting and realizes electromechanical energy conversion by a coaxial motor/generator. The large-capacity flywheel pulse generator set stores energy for a long time with low power, releases energy for a short time with high power, is generally used as a large-capacity pulse power supply, and can be applied to the fields of controlled nuclear fusion tests, nuclear explosion simulation, high-current particle beam accelerators, high-power pulse lasers, high-power microwaves, plasmas, electromagnetic emission technologies and the like.

The structure of a typical flywheel pulse generator system is shown in fig. 13. The basic working principle of the system is as follows: when the system is charged, an external power grid supplies energy to the system, a power converter formed by power electronic devices controls and drives a motor to drive a flywheel to rotate at a high speed, the flywheel can run at a constant high speed, the required energy is stored in a kinetic energy mode, and conversion from electric energy to mechanical energy and energy storage are completed. When the pulse load needs to supply power, the flywheel rotating at a high speed is used as a prime mover to drive the motor to generate power and operate, and the voltage and the current suitable for the pulse load are output through the power electronic converter to finish the energy conversion process.

The traditional flywheel pulse generator set usually adopts a structural form of 'motor-flywheel-generator'. The driving motor usually adopts a three-phase induction motor, while the pulse generator usually adopts a multiphase non-salient pole synchronous generator, the motor and the generator rotate coaxially, and an inertia flywheel is arranged on a rotating shaft of the generator. The flywheel and the generator are connected by a rigid coupling, the motor and the flywheel are connected flexibly, and the unit is provided with a plurality of bearings for supporting the rotor.

However, the flywheel pulse generator set has the following disadvantages: the whole unit has long shafting, low rotating speed, low power density, low energy density and large volume weight; the rotor of the pulse generator is provided with an excitation winding, and a multi-stage rotating rectifier is adopted for excitation, so that the system is low in reliability and high in cost, and is not suitable for being used in a mobile platform. Therefore, the above problems need to be solved.

Disclosure of Invention

The invention aims to solve the problems that the existing flywheel pulse generator set is long in shafting and low in rotating speed, an excitation winding is arranged on a rotor of a pulse generator, and a multi-stage rotating rectifier is adopted for excitation, so that the reliability of the system is low, and a generator system realized by the flywheel pulse generator set is low in power density, energy density and volume weight.

The first structure is as follows:

referring to fig. 1 to 7, a three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, wherein the axial magnetic field multiphase permanent magnet synchronous motor comprises a stator 1 and two rotors 2 which are coaxial; the two rotors 2 are respectively positioned at two axial sides of the stator 1, the two rotors 2 are mechanically and fixedly connected together, and air gaps are formed between the two rotors 2 and the stator 1;

the stator 1 comprises a stator iron core 1-1, a magnetic field control winding 1-2, an electric winding 1-3 and a power generation winding 1-4; wherein the content of the first and second substances,

the stator core 1-1 is of a circular structure, radial slots 1-1-1 are formed in two air gap surfaces of the stator core 1-1, and the stator core 1-1 forms a yoke part 1-1-2 and stator teeth; each radial groove 1-1-1 on each air gap surface is uniformly distributed along the circumferential direction;

the magnetic field control winding 1-2 is an annular winding and uniformly wound on a yoke part 1-1-2 of the stator core 1-1 along the circumferential direction;

the electric winding 1-3 is a multi-phase alternating current winding and is embedded in a radial slot 1-1-1 on the air gap side of the stator core 1-1;

the power generation winding 1-4 is a multi-phase alternating current winding and is embedded in a radial slot 1-1-1 on the air gap side of the stator core 1-1 or fixed on the air gap surface of the stator core 1-1;

the rotor 2 is of a surface-mounted permanent magnet structure, an embedded permanent magnet structure or a Halbach permanent magnet array structure;

all the permanent magnets 2-1 on the air gap surface of each rotor 2 are axially magnetized, wherein one or more permanent magnets 2-1 are used as a magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets 2-1 of the adjacent magnetic poles on each rotor 2 are opposite, and the magnetizing directions of the permanent magnets 2-1 of the opposite magnetic poles on the two rotors 2 are opposite.

The second structure is as follows:

referring to fig. 8, the three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, wherein the axial magnetic field multiphase permanent magnet synchronous motor comprises two stators 1 and a rotor 2 which are coaxial; the two stators 1 are respectively positioned at two axial sides of the rotor 2, the two stators 1 are mechanically and fixedly connected together, and air gaps are formed between the two stators 1 and the rotor 2;

each stator 1 comprises a stator iron core 1-1, a magnetic field control winding 1-2, an electric winding 1-3 and a power generation winding 1-4; wherein the content of the first and second substances,

the stator iron core 1-1 is of a circular structure, radial slots 1-1-1 are formed in the air gap surface of the stator iron core 1-1, and the stator iron core 1-1 forms a yoke part 1-1-2 and stator teeth; and all the radial grooves 1-1-1 on the air gap surface are uniformly distributed along the circumferential direction;

all permanent magnets 2-1 on the same air gap surface of the rotor 2 are axially magnetized, wherein one or more permanent magnets 2-1 are used as a magnetic pole; the magnetizing directions of the permanent magnets 2-1 of the adjacent magnetic poles on the same air gap surface of the rotor 2 are opposite.

A third structure:

referring to fig. 9, the three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, wherein the axial magnetic field multiphase permanent magnet synchronous motor comprises a stator 1 and two rotors 2 which are coaxial; the two rotors 2 are respectively positioned at two axial sides of the stator 1, the two rotors 2 are mechanically and fixedly connected together, and air gaps are formed between the two rotors 2 and the stator 1;

the stator iron core 1-1 comprises an inner stator iron core and an outer stator iron core which are coaxial, the outer stator iron core is positioned outside the inner stator iron core, a gap exists between the inner stator iron core and the outer stator iron core, the inner stator iron core and the outer stator iron core are both of annular structures, radial slots 1-1-1 are formed in two air gap surfaces of the inner stator iron core and the outer stator iron core, and the inner stator iron core and the outer stator iron core are enabled to form a yoke part 1-1-2 and stator teeth; each radial slot 1-1-1 on each air gap surface of the inner stator core and the outer stator core is uniformly distributed along the circumferential direction;

the magnetic field control winding 1-2 is an annular winding and uniformly wound on a yoke part 1-1-2 of the outer stator core along the circumferential direction;

the electric winding 1-3 is a multi-phase alternating current winding and is embedded in a radial slot 1-1-1 at the air gap side of the inner stator core;

the power generation winding 1-4 is a multi-phase alternating current winding and is embedded in a radial slot 1-1-1 at the air gap side of the outer stator iron core or fixed on the air gap surface of the outer stator iron core;

the air gap surface of each rotor 2 comprises two circles of permanent magnet arrays, the two circles of permanent magnet arrays respectively correspond to the same side air gap surface of the inner stator core and the outer stator core, all permanent magnets 2-1 in each circle of permanent magnet array are axially magnetized, one or more permanent magnets 2-1 in each circle of permanent magnet array are used as a magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets 2-1 of the adjacent magnetic poles in each circle of permanent magnet array are opposite, and the magnetizing directions of the corresponding permanent magnets 2-1 in the two circles of permanent magnet arrays on the same air gap surface of each rotor 2 are the same;

the magnetizing directions of the permanent magnets 2-1 of the opposite magnetic poles on the two rotors 2 are opposite.

A fourth configuration:

referring to fig. 10, the three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, wherein the axial magnetic field multiphase permanent magnet synchronous motor comprises two stators 1 and a rotor 2 which are coaxial; the two stators 1 are respectively positioned at two axial sides of the rotor 2, the two stators 1 are mechanically and fixedly connected together, and air gaps are formed between the two stators 1 and the rotor 2;

the stator iron core 1-1 comprises an inner stator iron core and an outer stator iron core which are coaxial, the outer stator iron core is positioned outside the inner stator iron core, a gap exists between the inner stator iron core and the outer stator iron core, the inner stator iron core and the outer stator iron core are both of annular structures, radial slots 1-1-1 are formed in the air gap surfaces of the inner stator iron core and the outer stator iron core, and the inner stator iron core and the outer stator iron core are enabled to form a yoke part 1-1-2 and stator teeth; the radial slots 1-1-1 on the air gap surfaces of the inner stator core and the outer stator core are uniformly distributed along the circumferential direction;

each air gap surface of the rotor 2 comprises two circles of permanent magnet arrays, the two circles of permanent magnet arrays respectively correspond to the air gap surfaces of an inner stator core and an outer stator core in one stator core 1-1, all permanent magnets 2-1 in each circle of permanent magnet array are axially magnetized, one or more permanent magnets 2-1 in each circle of permanent magnet array are used as one magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets 2-1 of the adjacent magnetic poles in each circle of permanent magnet array are opposite, and the magnetizing directions of the corresponding permanent magnets 2-1 in the two circles of permanent magnet arrays on the same air gap surface of the rotor 2 are the same;

the magnetizing directions of the permanent magnets 2-1 of the two air gap surfaces of the rotor 2 opposite to the magnetic poles are opposite.

Preferably, the three-winding axial magnetic field multiphase flywheel pulse generator system of the first or third structure further comprises a dc output power converter, an electric winding power converter and a multiphase rectifier;

the outgoing line of the magnetic field control winding 1-2 is connected with the output end of the direct current output power converter;

the outgoing line of the electric winding 1-3 is connected with the output end of the armature winding power converter;

the outgoing lines of the generating windings 1-4 are connected with the alternating current input end of the multi-phase rectifier.

Preferably, the three-winding axial magnetic field multiphase flywheel pulse generator system of the second or fourth structure further comprises a direct current output power converter, an electric winding power converter and a multiphase rectifier;

after two sets of magnetic field control windings 1-2 on two stators 1 are connected in series, leading-out wires of the two sets of magnetic field control windings are connected with the output end of the direct current output power converter;

after two sets of electric windings 1-3 on the two stators 1 are correspondingly connected in series, leading-out wires of the two sets of electric windings are connected with the output end of the electric winding power converter;

after two sets of generating windings 1-4 on the two stators 1 are correspondingly connected in series or in parallel, leading-out wires of the two sets of generating windings are connected with the alternating current input end of the multiphase rectifier.

The invention has the following effects: the axial magnetic field multiphase permanent magnet synchronous motor can be used as a motor and a generator, the motor/generator adopts an axial magnetic field and disc type structure, the structural strength of the rotor is high, the rotational inertia is large, the electric energy storage and the power generation and release share one rotor, a flywheel and the rotor of the synchronous motor are combined into a whole, a unit shafting is short, the weight is light, and the axial magnetic field multiphase permanent magnet synchronous motor is suitable for high-speed rotation, so that the energy storage density and the power density of the generator are high; the magnetic resistance of a main magnetic circuit and the size of main magnetic flux are changed through the magnetic field control winding 1-2, wherein the main magnetic circuit passes through a magnetic circuit in a stator core, the electromotive force and the output voltage of a generating winding are kept unchanged, the constant voltage speed change range is wide, and the magnetic field control loss is low; the rotor is not provided with a rectifier, a slip ring and an electric brush, and the system has the advantages of simple structure, high reliability, low cost and convenient maintenance.

The three-winding axial magnetic field multiphase flywheel pulse generator system has the advantages of high energy storage density, high power density, simple structure, high reliability, low cost, convenience in maintenance, capability of constantly controlling output voltage and the like, can be used as a high-capacity pulse power supply, and has good application prospects in the fields of nuclear fusion test technology, plasma, electromagnetic emission technology and the like.

In a modularized flywheel pulse generator system in the prior art, an exciting current adjusting unit is used for controlling an air gap magnetic field of a synchronous motor in a generator state so as to ensure that the output voltage of the synchronous motor is kept constant in a load and rotating speed change state. Compared with the modularized flywheel pulse generator system in the prior art, the generator system has the advantages that the adopted motor structures are different, an additional exciting current adjusting unit is not arranged in the motor system, and the system structure is simpler.

Drawings

Fig. 1 is a schematic structural diagram of a stator core 1-1 in a first embodiment;

FIG. 2 is a diagram of the relative position of the magnetic field control winding 1-2 and the stator core 1-1 in the first embodiment;

FIG. 3 is a schematic view of the structure of the moving coil 1-3 embedded in the radial slots 1-1-1 on the air gap surface of the stator core 1-1 in FIG. 2;

FIG. 4 is a diagram showing a relative position relationship between the power generation winding 1-4 and the stator core 1-1 in the first embodiment;

fig. 5 is a schematic structural diagram of an axial magnetic field multiphase permanent magnet synchronous motor according to the first embodiment;

fig. 6 is a schematic view of a first structure of the rotor 2 according to the first or second embodiment;

fig. 7 is a schematic view of a second structure of the rotor 2 according to the first or second embodiment;

fig. 8 is a schematic diagram of a structure of an axial magnetic field multiphase permanent magnet synchronous motor according to a second embodiment; wherein the content of the first and second substances,

fig. 8a is a schematic structural view of a stator core 1-1 according to a second embodiment;

fig. 8b is a schematic structural view of the stator core 1-1 in fig. 8a after circumferential slots 1-1-4 are formed in the second embodiment;

fig. 8c is a schematic structural diagram of a stator core 1-1 wound with a magnetic field control winding 1-2 in the second embodiment;

FIG. 8d is a diagram showing the relative positions of the electromotive winding 1-3 and the power generation winding 1-4 with respect to the stator core 1-1 in the second embodiment;

fig. 8e is a schematic overall structure diagram of an axial magnetic field multi-phase permanent magnet synchronous motor formed by using the stator 1 in fig. 8d in the second embodiment;

FIG. 9 is a schematic diagram of a structure of a seven-axis axial field multiphase permanent magnet synchronous motor according to an embodiment; wherein the content of the first and second substances,

fig. 9a is a schematic view of a first structure of the rotor 2 according to the seventh embodiment;

fig. 9b is a schematic view of a second structure of the rotor 2 according to the seventh embodiment;

fig. 9c is a schematic structural view of a stator core 1-1 according to a seventh embodiment;

fig. 9d is a schematic structural diagram of a seventh embodiment, in fig. 9c, a magnetic field control winding 1-2 is wound on an outer stator core, and a discharge dynamic winding 1-3 is embedded in a radial slot 1-1-1 on an air gap surface of an inner stator core;

fig. 9e is a schematic structural diagram of a discharge power generation winding 1-4 embedded in a radial slot 1-1-1 on an air gap surface of an outer stator core in fig. 9d according to a seventh embodiment;

fig. 9f is a schematic overall structure diagram of an axial magnetic field multiphase permanent magnet synchronous motor formed by using the stator 1 in fig. 9d in the seventh embodiment;

FIG. 10 is a schematic diagram of a structure of an embodiment eight-axial-field multiphase permanent magnet synchronous motor; wherein the content of the first and second substances,

fig. 10a is a schematic view of a first structure of the rotor 2 according to the eighth embodiment;

fig. 10b is a schematic view of a second structure of the rotor 2 according to the eighth embodiment;

fig. 10c is a schematic structural view of a stator core 1-1 according to an eighth embodiment;

fig. 10d is a schematic structural view of a seventh embodiment, in fig. 10c, a magnetic field control winding 1-2 is wound on an outer stator core, and a discharge dynamic winding 1-3 is embedded in a radial slot 1-1-1 on an air gap surface of an inner stator core;

fig. 10e is a schematic structural diagram of a discharge power generation winding 1-4 embedded in a radial slot 1-1-1 on an air gap surface of an outer stator core in fig. 10d according to a seventh embodiment;

fig. 10f is a schematic overall structure diagram of an axial magnetic field multiphase permanent magnet synchronous motor formed by using the stator 1 in fig. 10d in the eighth embodiment;

FIG. 11 is a schematic diagram of a three-winding axial magnetic field multiphase flywheel pulse generator system according to an exemplary embodiment of the present invention;

FIG. 12 is a schematic diagram of a three-winding axial magnetic field multiphase flywheel pulse generator system according to a thirteenth embodiment; wherein the content of the first and second substances,

FIG. 12a is a schematic diagram of a three-winding axial magnetic field multi-phase flywheel pulse generator system when two sets of generating windings 1-4 on two stators 1 are correspondingly connected in series;

FIG. 12b is a schematic diagram of a three-winding axial magnetic field multiphase flywheel pulse generator system when two sets of generating windings 1-4 on two stators 1 are correspondingly connected in parallel;

fig. 13 is a schematic structural diagram of a flywheel pulse generator system commonly used in the prior art.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The first embodiment is as follows: the following describes the present embodiment with reference to fig. 1 to 7, wherein the three-winding axial magnetic field multiphase flywheel pulse generator system of the present embodiment includes an axial magnetic field multiphase permanent magnet synchronous motor, and the axial magnetic field multiphase permanent magnet synchronous motor includes a stator 1 and two rotors 2, which are coaxial; the two rotors 2 are respectively positioned at two axial sides of the stator 1, the two rotors 2 are mechanically and fixedly connected together, and air gaps are formed between the two rotors 2 and the stator 1;

In the figure 1, a stator core 1-1 is annular, 36 radial slots 1-1-1 are arranged on two air gap surfaces in the axial direction of the annular stator core 1-1, and each radial slot 1-1-1 is uniformly distributed along the circumferential direction.

In fig. 2, the magnetic field control winding 1-2 is a ring winding, the magnetic field control winding 1-2 is formed by connecting 36 rectangular coils in series, and two coil sides of each rectangular coil are embedded in two corresponding radial slots 1-1-1 on two air gap surfaces of the stator core 1-1.

In fig. 3, the electromotive windings 1-3 are ring-shaped three-phase ac windings, the electromotive windings 1-3 include 36 coils, the number of poles of the rotor 2 is 6, the number of the radial slots 1-1-1 corresponding to two air gap surfaces of each phase of each pole is equal to 2, and the 36 coils constituting the three-phase symmetric electromotive windings are also uniformly embedded in the radial slots 1-1-1 of the two air gap surfaces of the stator core 1-1.

In fig. 4, the generating windings 1-4 adopt three-phase integral-pitch single-layer windings, the number of slots of each pole and each phase of the generating windings 1-4 is equal to 2, and the generating windings 1-4 are embedded in radial slots 1-1-1 on the air gap side of the stator core 1-1.

In fig. 6, each rotor 2 includes permanent magnets 2-1 and a rotor core 2-2, and in fig. 6, the rotor 2 is of an embedded permanent magnet structure, and three permanent magnets 2-1 constituting each pole are embedded in a slot on the air gap side of the annular rotor core 2-2. The permanent magnet 2-1 is axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles are opposite. The magnetizing directions of the permanent magnets 2-1 with opposite magnetic poles on the two rotors are opposite.

In fig. 7, each rotor 2 comprises permanent magnets 2-1, a rotor substrate 2-3 and magnetizers 2-4, in fig. 7, the rotor 2 is of an embedded permanent magnet structure, and three permanent magnets 2-1 forming each magnetic pole are embedded in a slot on the air gap side of the circular rotor substrate 2-3. The permanent magnet 2-1 is axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles are opposite. The magnetizing directions of the permanent magnets 2-1 with opposite magnetic poles on the two rotors are opposite.

In the embodiment, the axial magnetic field multiphase permanent magnet synchronous motor can be used as a motor and a generator, the motor/generator adopts an axial magnetic field and a disc structure, the rotor has high structural strength and large rotational inertia, the motor energy storage and power generation and energy release share one rotor, a flywheel and the rotor of the synchronous motor are combined into one, a unit shafting is short, the weight is light, and the motor/generator is suitable for high-speed rotation, so that the energy storage density of the generator is high, and the power density is large; the magnetic resistance of a main magnetic circuit and the size of main magnetic flux are changed through the magnetic field control winding 1-2, wherein the main magnetic circuit passes through a magnetic circuit in a stator core, the electromotive force and the output voltage of a generating winding are kept unchanged, the constant voltage speed change range is wide, and the magnetic field control loss is low; the rotor is not provided with a rectifier, a slip ring and an electric brush, and the system has the advantages of simple structure, high reliability, low cost and convenient maintenance.

The second embodiment is as follows: the following describes the present embodiment with reference to fig. 8, where the three-winding axial magnetic field multiphase flywheel pulse generator system of the present embodiment includes an axial magnetic field multiphase permanent magnet synchronous motor, where the axial magnetic field multiphase permanent magnet synchronous motor includes two stators 1 and one rotor 2, and the three are coaxial; the two stators 1 are respectively positioned at two axial sides of the rotor 2, the two stators 1 are mechanically and fixedly connected together, and air gaps are formed between the two stators 1 and the rotor 2;

In fig. 8a, a stator core 1-1 is a circular ring structure, 36 radial slots 1-1-1 are formed in an air gap surface of each stator core 1-1, and the radial slots 1-1-1 are uniformly distributed along the circumferential direction.

In fig. 8c, the magnetic field control winding 1-2 is a ring winding, the magnetic field control winding 1-2 is formed by connecting 36 rectangular coils in series, and the left and right coil sides of each rectangular coil are embedded in the two corresponding axial slots 1-1-3 on the inner and outer side walls of the stator core 1-1.

In fig. 8d, the electromotive windings 1-3 are ring-shaped three-phase ac windings, the electromotive windings 1-3 include 36 coils, the number of poles of the rotor 2 is 6, the number of the radial slots 1-1-1 corresponding to the two air gap surfaces of each phase of each pole is equal to 2, and the 36 coils constituting the three-phase symmetric electromotive windings are also uniformly embedded in the radial slots 1-1-1 of the air gap surfaces of the stator core 1-1.

In fig. 8d, the generating windings 1-4 adopt three-phase integral-pitch single-layer windings, the number of slots of each pole and each phase of the generating windings 1-4 is equal to 2, and the generating windings 1-4 are embedded in the radial slots 1-1-1 on the air gap side of the stator core 1-1.

In fig. 6, the rotor 2 includes permanent magnets 2-1 and a rotor core 2-2, and in fig. 6, the rotor 2 has an embedded permanent magnet structure, and three permanent magnets 2-1 constituting each magnetic pole are embedded in a slot on the air gap side of the annular rotor core 2-2. The permanent magnet 2-1 is axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles are opposite. The magnetizing directions of the permanent magnets 2-1 with opposite magnetic poles on the two rotors are opposite.

In fig. 7, the rotor 2 includes permanent magnets 2-1, a rotor substrate 2-3 and magnetizers 2-4, and in fig. 7, the rotor 2 is of an embedded permanent magnet structure, and three permanent magnets 2-1 forming each magnetic pole are embedded in a slot on the air gap side of the circular rotor substrate 2-3. The permanent magnet 2-1 is axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles are opposite.

The third concrete implementation mode: the following describes the present embodiment with reference to fig. 2, fig. 8a and fig. 8b, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the first or second embodiment, in which a circumferential groove 1-1-4 is formed on an air gap surface of a stator core 1-1, and the circumferential groove 1-1-4 is a circular groove body for fixing a generating winding 1-4.

The fourth concrete implementation mode: the present embodiment is described below with reference to fig. 1 and 8a, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the first or second embodiment, wherein axial slots 1-1-3 are further formed in the inner and outer side walls of the stator core 1-1, the axial slots 1-1-3 are uniformly distributed along the circumferential direction of the side wall where the axial slots are located, and each axial slot 1-1-3 is communicated with a corresponding radial slot 1-1-1.

The fifth concrete implementation mode: the present embodiment is described below with reference to fig. 6 and 7, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the first or second embodiment, where the rotor 2 includes two types of structures:

the first one is: the rotor 2 comprises a permanent magnet 2-1 and a rotor iron core 2-2; the rotor iron core 2-2 is of a circular structure, and each permanent magnet 2-1 is attached to the air gap surface of the rotor iron core 2-2 along the circumferential direction or embedded into the air gap surface of the rotor iron core 2-2 along the circumferential direction;

the second method is as follows: the rotor 2 comprises a permanent magnet 2-1, a rotor substrate 2-3 and a magnetizer 2-4; the rotor substrate 2-3 is a circular structure, each permanent magnet 2-1 is attached to the air gap surface of the rotor substrate 2-3 along the circumferential direction or embedded in the air gap surface of the rotor substrate 2-3 along the circumferential direction, and a magnetizer 2-4 is arranged between adjacent magnetic poles of the same air gap surface.

The sixth specific implementation mode: the following describes the present embodiment with reference to fig. 8, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the second embodiment, where two sets of generating windings 1-4 on two stators 1 are connected in series or in parallel correspondingly.

The seventh embodiment: the following describes the present embodiment with reference to fig. 9, where the three-winding axial magnetic field multiphase flywheel pulse generator system of the present embodiment includes an axial magnetic field multiphase permanent magnet synchronous motor, where the axial magnetic field multiphase permanent magnet synchronous motor includes a stator 1 and two rotors 2, and the three are coaxial; the two rotors 2 are respectively positioned at two axial sides of the stator 1, the two rotors 2 are mechanically and fixedly connected together, and air gaps are formed between the two rotors 2 and the stator 1;

In fig. 9c, a stator core 1-1 includes an inner stator core and an outer stator core, the inner and outer stator cores are both in a circular structure, radial slots 1-1-1 are respectively formed on two air gap surfaces of the inner and outer stator cores, and the radial slots 1-1-1 on each air gap surface of the inner and outer stator cores are uniformly distributed along the circumferential direction;

in fig. 9d, the magnetic field control winding 1-2 is a ring winding, the magnetic field control winding 1-2 is formed by connecting 36 rectangular coils in series, and two coil sides of each rectangular coil are embedded in two corresponding radial slots 1-1-1 on two air gap surfaces of the outer stator core.

In fig. 9d, the electrodynamic winding 1-3 is a toroidal three-phase ac winding, and the electrodynamic winding 1-3 comprises 36 coils, which are embedded in the radial slots 1-1-1 on the air gap side of the inner stator core.

In fig. 9a, the rotors 2 are of an embedded permanent magnet structure, and each rotor 2 comprises a permanent magnet 2-1 and a rotor core 2-2; the air gap surface of each rotor 2 comprises two circles of permanent magnet arrays, the inner circle of permanent magnet array corresponds to the inner stator core, the outer circle of permanent magnet array corresponds to the outer stator core, 3 permanent magnets 2-1 in the inner circle of permanent magnet array serve as a magnetic pole and are embedded in a groove in the inner circle of the air gap side of the annular rotor core 2-2, 3 permanent magnets 2-1 in the outer circle of permanent magnet array serve as a magnetic pole and are embedded in a groove in the outer circle of the air gap side of the annular rotor core 2-2, the magnets 2-1 are axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles in the same circle of permanent magnet array are opposite. The magnetizing directions of the permanent magnets 2-1 with opposite magnetic poles on the two rotors are opposite.

In FIG. 9b, the rotor 2 is an embedded permanent magnet structure, and the rotor 2 comprises a permanent magnet 2-1, a rotor substrate 2-3 and a magnetizer 2-4; the air gap surface of each rotor 2 comprises two circles of permanent magnet arrays, the inner circle of permanent magnet array corresponds to an inner stator core, the outer circle of permanent magnet array corresponds to an outer stator core, 3 permanent magnets 2-1 in the inner circle of permanent magnet array serve as a magnetic pole and are embedded in a groove in the inner circle of the air gap side of the circular rotor substrate 2-3, 3 permanent magnets 2-1 in the outer circle of permanent magnet array serve as a magnetic pole and are embedded in a groove in the outer circle of the air gap side of the circular rotor substrate 2-3, the magnets 2-1 are axially magnetized, and the magnetizing directions of the permanent magnets 2-1 of adjacent magnetic poles in the same circle of permanent magnet array are opposite. The magnetizing directions of the permanent magnets 2-1 with opposite magnetic poles on the two rotors are opposite.

The specific implementation mode is eight: the present embodiment is described below with reference to fig. 10, and the three-winding axial magnetic field multiphase flywheel pulse generator system of the present embodiment includes an axial magnetic field multiphase permanent magnet synchronous motor, where the axial magnetic field multiphase permanent magnet synchronous motor includes two stators 1 and one rotor 2, and the three are coaxial; the two stators 1 are respectively positioned at two axial sides of the rotor 2, the two stators 1 are mechanically and fixedly connected together, and air gaps are formed between the two stators 1 and the rotor 2;

The specific implementation method nine: the present embodiment is described below with reference to fig. 9c and fig. 10c, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the seventh or eighth embodiment, wherein axial slots 1-1-3 are respectively formed in the inner and outer side walls of the inner and outer stator cores, each axial slot 1-1-3 is uniformly distributed along the circumferential direction of the side wall where the axial slot is located, and each axial slot 1-1-3 is communicated with the corresponding radial slot 1-1-1.

The detailed implementation mode is ten: the present embodiment is described below with reference to fig. 9a, 9b, 10a and 10b, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the seventh or eighth embodiment, where the rotor 2 includes two types:

The concrete implementation mode eleven: the present embodiment is described below with reference to fig. 10, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the eighth embodiment, where two sets of generating windings 1-4 on two stators 1 are connected in series or in parallel correspondingly.

The specific implementation mode twelve: the present embodiment is described below with reference to fig. 11, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system according to the first or seventh embodiment, where the generator system further includes a dc output power converter, an electric winding power converter, and a multiphase rectifier;

In the embodiment, the three-winding axial magnetic field multiphase flywheel pulse generator system has the advantages of high energy storage density, high power density, simple structure, high reliability, low cost, convenience in maintenance, capability of constantly controlling output voltage and the like, can be used as a high-capacity pulse power supply, and has good application prospects in the fields of nuclear fusion test technology, plasma, electromagnetic emission technology and the like.

The specific implementation mode is thirteen: the present embodiment is described below with reference to fig. 12, and the present embodiment further describes a three-winding axial magnetic field multiphase flywheel pulse generator system described in the second or eighth embodiment, where the generator system further includes a dc output power converter, an electric winding power converter, and a multiphase rectifier;

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, and is characterized in that the axial magnetic field multiphase permanent magnet synchronous motor comprises a stator (1) and two rotors (2), and the stator, the rotors and the rotors are coaxial; the two rotors (2) are respectively positioned at two axial sides of the stator (1), the two rotors (2) are mechanically and fixedly connected together, and air gaps are formed between the two rotors (2) and the stator (1);

the stator (1) comprises a stator iron core (1-1), a magnetic field control winding (1-2), an electric winding (1-3) and a power generation winding (1-4); wherein the content of the first and second substances,

the stator iron core (1-1) is of a circular structure, radial slots (1-1-1) are formed in two air gap surfaces of the stator iron core (1-1), and the stator iron core (1-1) forms a yoke part (1-1-2) and stator teeth; each radial groove (1-1-1) on each air gap surface is uniformly distributed along the circumferential direction;

the magnetic field control winding (1-2) is an annular winding and is uniformly wound on a yoke part (1-1-2) of the stator core (1-1) along the circumferential direction;

the electric winding (1-3) is a multi-phase alternating current winding and is embedded in a radial slot (1-1-1) on the air gap side of the stator core (1-1);

the power generation winding (1-4) is a multi-phase alternating current winding and is embedded in a radial slot (1-1-1) on the air gap side of the stator core (1-1) or fixed on the air gap surface of the stator core (1-1);

the rotor (2) is of a surface-mounted permanent magnet structure, an embedded permanent magnet structure or a Halbach permanent magnet array structure;

all the permanent magnets (2-1) on the air gap surface of each rotor (2) are axially magnetized, wherein one or more permanent magnets (2-1) are used as a magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets (2-1) of the adjacent magnetic poles on each rotor (2) are opposite, and the magnetizing directions of the permanent magnets (2-1) of the opposite magnetic poles on the two rotors (2) are opposite.

2. The three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, and is characterized in that the axial magnetic field multiphase permanent magnet synchronous motor comprises two stators (1) and a rotor (2), and the stators, the rotor and the rotor are coaxial; the two stators (1) are respectively positioned at two axial sides of the rotor (2), the two stators (1) are mechanically and fixedly connected together, and air gaps are formed between the two stators (1) and the rotor (2);

each stator (1) comprises a stator iron core (1-1), a magnetic field control winding (1-2), an electric winding (1-3) and a power generation winding (1-4); wherein the content of the first and second substances,

the stator iron core (1-1) is of a circular structure, radial slots (1-1-1) are formed in the air gap surface of the stator iron core (1-1), and the stator iron core (1-1) forms a yoke part (1-1-2) and stator teeth; and all the radial grooves (1-1-1) on the air gap surface are uniformly distributed along the circumferential direction;

all permanent magnets (2-1) on the same air gap surface of the rotor (2) are axially magnetized, wherein one or more permanent magnets (2-1) are used as a magnetic pole; the magnetizing directions of the permanent magnets (2-1) of the adjacent magnetic poles on the same air gap surface of the rotor (2) are opposite.

3. The three-winding axial magnetic field multiphase flywheel pulse generator system as claimed in claim 1 or 2, characterized in that a circumferential groove (1-1-4) is formed on the air gap surface of the stator core (1-1), and the circumferential groove (1-1-4) is a circular groove body and is used for fixing the power generation winding (1-4).

4. The three-winding axial magnetic field multiphase flywheel pulse generator system according to claim 1 or 2, characterized in that the inner and outer side walls of the stator core (1-1) are further provided with axial slots (1-1-3), each axial slot (1-1-3) is uniformly distributed along the circumferential direction of the side wall where the axial slot is located, and each axial slot (1-1-3) is communicated with the corresponding radial slot (1-1-1).

5. A three-winding axial-magnetic-field multiphase flywheel pulse generator system according to claim 1 or 2, characterized in that the rotor (2) is composed of two types:

the first one is: the rotor (2) comprises a permanent magnet (2-1) and a rotor iron core (2-2); the rotor iron core (2-2) is of a circular structure, and each permanent magnet (2-1) is attached to the air gap surface of the rotor iron core (2-2) along the circumferential direction or embedded into the air gap surface of the rotor iron core (2-2) along the circumferential direction;

the second method is as follows: the rotor (2) comprises a permanent magnet (2-1), a rotor substrate (2-3) and a magnetizer (2-4); the rotor substrate (2-3) is of a circular structure, each permanent magnet (2-1) is attached to the air gap surface of the rotor substrate (2-3) along the circumferential direction or embedded into the air gap surface of the rotor substrate (2-3) along the circumferential direction, and a magnetizer (2-4) is arranged between adjacent magnetic poles of the same air gap surface.

6. The three-winding axial magnetic field multiphase flywheel pulse generator system according to claim 2, characterized in that corresponding phases of the two sets of generating windings (1-4) on the two stators (1) are connected in series or in parallel.

7. The three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, and is characterized in that the axial magnetic field multiphase permanent magnet synchronous motor comprises a stator (1) and two rotors (2), and the stator, the rotors and the rotors are coaxial; the two rotors (2) are respectively positioned at two axial sides of the stator (1), the two rotors (2) are mechanically and fixedly connected together, and air gaps are formed between the two rotors (2) and the stator (1);

the stator iron core (1-1) comprises an inner stator iron core and an outer stator iron core which are coaxial, the outer stator iron core is positioned outside the inner stator iron core, a gap exists between the inner stator iron core and the outer stator iron core, the inner stator iron core and the outer stator iron core are both of annular structures, and radial slots (1-1-1) are formed in two air gap surfaces of the inner stator iron core and the outer stator iron core, so that the inner stator iron core and the outer stator iron core form a yoke part (1-1-2) and stator teeth; each radial slot (1-1-1) on each air gap surface of the inner stator core and the outer stator core is uniformly distributed along the circumferential direction;

the magnetic field control winding (1-2) is an annular winding and is uniformly wound on a yoke part (1-1-2) of the outer stator core along the circumferential direction;

the electric winding (1-3) is a multi-phase alternating current winding and is embedded in a radial slot (1-1-1) on the air gap side of the inner stator core;

the power generation winding (1-4) is a multi-phase alternating current winding and is embedded in a radial slot (1-1-1) on the air gap side of the outer stator core or fixed on the air gap surface of the outer stator core;

the air gap surface of each rotor (2) comprises two circles of permanent magnet arrays, the two circles of permanent magnet arrays respectively correspond to the same side air gap surface of the inner stator core and the outer stator core, all permanent magnets (2-1) in each circle of permanent magnet array are axially magnetized, one or more permanent magnets (2-1) in each circle of permanent magnet array are used as a magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets (2-1) of adjacent magnetic poles in each circle of permanent magnet array are opposite, and the magnetizing directions of the corresponding permanent magnets (2-1) in the two circles of permanent magnet arrays on the same air gap surface of each rotor (2) are the same;

the magnetizing directions of the permanent magnets (2-1) of the opposite magnetic poles on the two rotors (2) are opposite.

8. The three-winding axial magnetic field multiphase flywheel pulse generator system comprises an axial magnetic field multiphase permanent magnet synchronous motor, and is characterized in that the axial magnetic field multiphase permanent magnet synchronous motor comprises two stators (1) and a rotor (2), and the stators, the rotor and the rotor are coaxial; the two stators (1) are respectively positioned at two axial sides of the rotor (2), the two stators (1) are mechanically and fixedly connected together, and air gaps are formed between the two stators (1) and the rotor (2);

the stator iron core (1-1) comprises an inner stator iron core and an outer stator iron core which are coaxial, the outer stator iron core is positioned outside the inner stator iron core, a gap exists between the inner stator iron core and the outer stator iron core, the inner stator iron core and the outer stator iron core are both of annular structures, and radial slots (1-1-1) are formed in the air gap surfaces of the inner stator iron core and the outer stator iron core, so that the inner stator iron core and the outer stator iron core form a yoke part (1-1-2) and stator teeth; all radial slots (1-1-1) on the air gap surfaces of the inner stator core and the outer stator core are uniformly distributed along the circumferential direction;

each air gap surface of the rotor (2) comprises two circles of permanent magnet arrays, the two circles of permanent magnet arrays respectively correspond to the air gap surfaces of an inner stator core and an outer stator core in one stator core (1-1), all the permanent magnets (2-1) in each circle of permanent magnet array are axially magnetized, one or more permanent magnets (2-1) in each circle of permanent magnet array serve as one magnetic pole, and the magnetizing directions of the permanent magnets on each magnetic pole are the same; the magnetizing directions of the permanent magnets (2-1) of adjacent magnetic poles in each circle of permanent magnet array are opposite, and the magnetizing directions of the corresponding permanent magnets (2-1) in the two circles of permanent magnet arrays on the same air gap surface of the rotor (2) are the same;

the magnetizing directions of the permanent magnets (2-1) of the opposite magnetic poles on the two air gap surfaces of the rotor (2) are opposite.

9. The three-winding axial magnetic field multiphase flywheel pulse generator system according to claim 7 or 8, characterized in that the inner and outer side walls of the inner and outer stator cores are respectively provided with axial slots (1-1-3), each axial slot (1-1-3) is uniformly distributed along the circumferential direction of the side wall where the axial slot is located, and each axial slot (1-1-3) is communicated with the corresponding radial slot (1-1-1).

10. A three-winding axial-magnetic-field multiphase flywheel pulse generator system according to claim 7 or 8, characterized in that the rotor (2) is composed of two types:

11. The three-winding axial magnetic field multiphase flywheel pulse generator system of claim 8, characterized in that corresponding phases of the two sets of generating windings (1-4) on the two stators (1) are connected in series or in parallel.

12. The three-winding axial magnetic field multiphase flywheel pulse generator system of claim 1 or 7, wherein the generator system further comprises a dc output power converter, an electric winding power converter and a multiphase rectifier;

the outgoing line of the magnetic field control winding (1-2) is connected with the output end of the direct current output power converter;

the outgoing line of the electric winding (1-3) is connected with the output end of the armature winding power converter;

the outgoing line of the generating winding (1-4) is connected with the alternating current input end of the multi-phase rectifier.

13. The three-winding axial magnetic field multiphase flywheel pulse generator system of claim 2 or 8, wherein the generator system further comprises a dc output power converter, an electric winding power converter and a multiphase rectifier;

after two sets of magnetic field control windings (1-2) on the two stators (1) are connected in series, leading-out wires of the two sets of magnetic field control windings are connected with the output end of the direct current output power converter;

after two sets of electric windings (1-3) on the two stators (1) are correspondingly connected in series, leading-out wires of the two sets of electric windings are connected with the output end of the electric winding power converter;

after two sets of generating windings (1-4) on the two stators (1) are correspondingly connected in series or in parallel, leading-out wires of the generating windings are connected with the alternating current input end of the multi-phase rectifier.