阅读说明：本技术 径向同轴一体式高功率密度惯性储能脉冲电源系统 (Radial coaxial integrated high-power-density inertial energy storage pulse power supply system ) 是由 吴绍朋 吴松霖 徐杰 宗影影 周锦阳 崔淑梅 于 2019-10-24 设计创作，主要内容包括：径向同轴一体式高功率密度惯性储能脉冲电源系统,涉及惯性储能脉冲电源技术领域。本发明是为了解决现有传统的惯性储能脉冲电源系统,原动机和脉冲发电机之间通过联轴节机械连接,导致轴向长度大、机械噪音大、功率密度低、可靠性差,并且传统系统的电枢绕组采用铜线制成,放电时电枢绕组会产生瞬态大电流以致损坏电枢绕组的问题。内定子、转子和外定子从内向外同轴嵌套,内定子与转子之间存在气隙,外定子与转子之间存在气隙；电动机电枢绕组和发电机电枢绕组均由铜基碳纳米管导线制成。它作为脉冲电源。(Radial coaxial integral type high power density inertia energy storage pulse power supply system relates to inertia energy storage pulse power supply technical field. The invention aims to solve the problems that in the existing traditional inertial energy storage pulse power supply system, a prime motor and a pulse generator are mechanically connected through a coupling, so that the axial length is large, the mechanical noise is large, the power density is low, and the reliability is poor, and an armature winding of the traditional system is made of copper wires and can generate transient large current during discharging so as to damage the armature winding. The inner stator, the rotor and the outer stator are coaxially nested from inside to outside, an air gap exists between the inner stator and the rotor, and an air gap exists between the outer stator and the rotor; the motor armature winding and the generator armature winding are both made of copper-based carbon nanotube wires. It acts as a pulsed power supply.)

1. The radial coaxial integrated high-power-density inertial energy storage pulse power supply system is characterized by comprising an outer stator, an inner stator and a rotor,

the inner stator, the rotor and the outer stator are coaxially nested from inside to outside, an air gap exists between the inner stator and the rotor, and an air gap exists between the outer stator and the rotor;

the inner stator comprises a motor stator fixing shaft (1), a motor stator back yoke (2), a motor laminated stator core (3) and a motor armature winding (4),

the rotor comprises a rotor inner side carbon fiber support body (5) and a plurality of permanent magnets (7),

the motor stator back yoke (2) is fixed on the outer circumferential surface of the motor stator fixing shaft (1), a motor laminated stator core (3) is sleeved on the outer circumferential surface of the motor stator back yoke (2), a plurality of teeth are uniformly arranged on the outer surface of the motor laminated stator core (3) along the circumferential direction, motor armature windings (4) are wound on the teeth, a rotor inner side carbon fiber support body (5) is sleeved on the outer circumferential surface of the motor laminated stator core (3), a plurality of permanent magnets (7) are uniformly arranged on the outer circumferential surface of the rotor inner side carbon fiber support body (5) along the circumferential direction, and the polarities of two adjacent permanent magnets (7) are opposite;

the outer stator comprises a generator carbon fiber supporting body (10), a generator armature winding (11) and a generator stator yoke (12),

the generator carbon fiber support body (10) is sleeved on the outer circumferential surfaces of the permanent magnets (7) at the same time, a plurality of support teeth are uniformly arranged on the outer surface of the generator carbon fiber support body (10) along the circumferential direction, a generator armature winding (11) is wound on the support teeth, and a generator stator yoke (12) is sleeved outside the generator armature winding (11);

the motor armature winding (4) and the generator armature winding (11) are both made of copper-based carbon nanotube wires.

2. The radial coaxial integral high power density inertial energy storage pulse power system of claim 1, characterized in that the rotor further comprises permanent magnet interpolar fillers (6),

and the space between two adjacent permanent magnets (7) is filled with permanent magnet interpolar fillers (6).

3. The radial coaxial integrated high power density inertial energy storage pulse power supply system according to claim 1, characterized in that the rotor further comprises a compensation cylinder (8) and a rotor outer carbon fiber strap (9),

a compensation cylinder (8) and a rotor outer side carbon fiber binding band (9) are arranged between the permanent magnet (7) and the generator carbon fiber support body (10), and the rotor outer side carbon fiber binding band (9) is sleeved on the outer circumferential surface of the compensation cylinder (8).

4. The radial coaxial integral high power density inertial energy storage pulse power system of claim 1, further comprising a housing (13),

the outer casing (13) is sleeved on the outer circumferential surface of the generator stator yoke (12).

5. The radial coaxial integrated high power density inertial energy storage pulse power supply system according to claim 1, characterized in that the generator armature winding (11) comprises a-phase armature winding (11-1) and a B-phase armature winding (11-2), the a-phase armature winding (11-1) and the B-phase armature winding (11-2) being alternately arranged.

Technical Field

The invention relates to a power supply system of a pulse generator, belonging to the technical field of inertial energy storage pulse power supplies.

Background

The pulse generator is an inertial energy storage pulse power supply and adopts a prime motor to carry out dragging operation. The pulse generator integrates inertial energy storage, electromechanical energy conversion and power regulation, and has the comprehensive advantage of a single element. The pulse waveform has the advantages of high energy density, high power density, suitability for repeated discharge, flexible pulse waveform adjustment and the like, and has wide application prospect in the fields of military, industry and civil use.

For a traditional inertia energy storage pulse power supply system, a prime motor and a pulse generator are mechanically connected through a coupling, and during discharging, the generated instantaneous impact can increase mechanical noise, increase the risk of coupling damage, increase the maintenance cost and reduce the safety and reliability of the power supply system.

When the pulse generator discharges, an armature winding flows through instantaneous strong current, high temperature rise can be generated in the winding in a very short time due to large copper loss, the peak value and the pulse width of the current are restricted by the heat capacity of a traditional lead and the insulation grade of an insulating material, and the output capacity, the continuous power generation capacity, the power density and the energy storage density of the motor are limited due to the limited quick heat dissipation capacity and the poor heat dissipation condition of a traditional cooling structure in high-speed operation. At the same time, in the instant of discharging, strong impact torque brought by instantaneous current can also impact the slotless armature winding, and the intensity of the winding is also greatly tested.

Disclosure of Invention

The invention aims to solve the problems that in the existing traditional inertial energy storage pulse power supply system, a prime motor and a pulse generator are mechanically connected through a coupling, so that the axial length is large, the mechanical noise is large, the power density is low, and the reliability is poor, and an armature winding of the traditional system is made of copper wires and can generate transient large current during discharging so as to damage the armature winding. A radial coaxial integrated high-power-density inertial energy storage pulse power supply system is provided.

A radial coaxial integrated high-power-density inertial energy storage pulse power supply system comprises an outer stator, an inner stator and a rotor,

the inner stator, the rotor and the outer stator are coaxially nested from inside to outside, an air gap exists between the inner stator and the rotor, and an air gap exists between the outer stator and the rotor;

the inner stator comprises a motor stator fixing shaft 1, a motor stator back yoke 2, a motor laminated stator core 3 and a motor armature winding 4,

the rotor comprises a rotor inner side carbon fiber support body 5 and a plurality of permanent magnets 7,

the motor stator back yoke 2 is fixed on the outer circumferential surface of the motor stator fixing shaft 1, the outer circumferential surface of the motor stator back yoke 2 is sleeved with a motor laminated stator core 3, a plurality of teeth are uniformly arranged on the outer surface of the motor laminated stator core 3 along the circumferential direction, motor armature windings 4 are wound on the teeth, a rotor inner side carbon fiber support body 5 is sleeved on the outer circumferential surface of the motor laminated stator core 3, a plurality of permanent magnets 7 are uniformly distributed on the outer circumferential surface of the rotor inner side carbon fiber support body 5 along the circumferential direction, and the polarities of the adjacent two permanent magnets 7 are opposite;

the outer stator comprises a generator carbon fiber support body 10, a generator armature winding 11 and a generator stator yoke 12,

the generator carbon fiber support body 10 is simultaneously sleeved on the outer circumferential surfaces of the permanent magnets 7, a plurality of support teeth are uniformly arranged on the outer surface of the generator carbon fiber support body 10 along the circumferential direction, a generator armature winding 11 is wound on the support teeth, and a generator stator yoke 12 is sleeved outside the generator armature winding 11;

the motor armature winding 4 and the generator armature winding 11 are both made of copper-based carbon nanotube wire.

Preferably, the rotor further comprises permanent magnet interpolar fillers 6,

the space between two adjacent permanent magnets 7 is filled with the permanent magnet interpolar filler 6.

Preferably, the rotor also comprises a compensation cylinder 8 and a carbon fiber bandage 9 outside the rotor,

a compensation cylinder 8 and a carbon fiber bandage 9 outside the rotor are arranged between the permanent magnet 7 and the carbon fiber support body 10 of the generator,

the carbon fiber bandage 9 outside the rotor is sleeved on the outer circumferential surface of the compensation cylinder 8.

Preferably, the system further comprises a housing 13,

the housing 13 is fitted over the outer circumferential surface of the generator stator yoke 12.

Preferably, the generator armature winding 11 includes a-phase armature winding 11-1 and a B-phase armature winding 11-2, and the a-phase armature winding 11-1 and the B-phase armature winding 11-2 are alternately arranged.

The invention has the beneficial effects that:

the invention provides the idea of sharing the coaxial rotor by the motor and the generator, greatly simplifies the system structure, reduces the axial length, eliminates the coupling between the motor and the generator, reduces the mechanical noise, reduces the volume and the mass of the whole power supply system, and improves the power density and the reliability. The inner stator and the outer stator share one rotor, and the rotor adopts a permanent magnet scheme, so that an electric brush and a slip ring can be omitted, the reliability of a system is improved, the high-speed operation of the rotor is facilitated, and the power density is further improved.

In addition, armature windings in the motor and the generator are both made of Copper-based Carbon nanotube wires, because Copper-based Carbon nanotube composite materials (Copper-Carbon Nanotubes, Cu-CNTs for short) have excellent characteristics, high electron transfer rate, large maximum current density capable of accommodating, 10 times of electric conductivity of pure Copper, 100 times of current capacity of pure Copper, 10 times of thermal conductivity of pure Copper, 300 times of strength of Copper, 1/4-1/6 of mass density of Copper only, extremely low temperature coefficient of resistance, and no skin effect and proximity effect. The copper-based carbon nanotube wire has the advantages of high conductivity, low resistance temperature coefficient, low mass density, high strength, high carrying capacity and the like, and is quite consistent with the special application working condition of the pulse generator. Armature windings on the inner stator and the outer stator are both made of copper-based carbon nanotube wires, and a plurality of stranded wires (litz wires) are made of the copper-based carbon nanotube wires to reduce eddy current loss between winding conductors, so that the discharge capacity of the pulse generator can be greatly improved, and the repeated discharge frequency of the pulse generator is improved. When the generator discharges, instantaneous large current flows through the winding, the heat capacity and the resistivity of the lead material restrict the current peak value and the pulse width, and the output capacity of the motor is limited, so that the introduction of the copper-based carbon nanotube lead can increase the current-carrying capacity of the winding, reduce the winding loss, the motor quality and the volume, greatly improve the through-current capacity of the generator, enhance the winding strength and the impact resistance, reduce the loss and heat, reduce the motor quality, and obtain higher power density.

Drawings

Fig. 1 is a structural diagram of a radial coaxial integrated high power density inertial energy storage pulse power supply system according to a first embodiment.

Detailed Description