Air core compensation pulse generator power supply system based on rising and falling controllable super electric brush

Abstract

The invention discloses an air-core compensation pulse generator power supply system based on a rising and falling controllable super electric brush, belongs to the technical field of inertial energy storage pulse power supplies, and aims to solve the problems that an existing air-core pulse generator is large in motor axial length and instantaneous strong current flows through an armature winding. A high-speed permanent magnet synchronous motor, an air-core pulse generator and a self-excitation discharge rectifier are integrated, the high-speed permanent magnet synchronous motor drags the air-core pulse generator to reach a rated rotating speed, the air-core pulse generator establishes a magnetic field through a positive feedback effect between the self-excitation discharge rectifier and an excitation winding, no-load voltage is induced on an armature winding, and the no-load voltage is generated. The armature winding discharges to a load through the self-excitation discharge rectifier; the hollow pulse generator comprises a stator and a rotor; an armature winding of the stator adopts a Litz wire made of a Cu-CNTs composite material, and a super electric brush of the rotor is a rising and falling controllable super electric brush made of a Cu-CNTs composite material. The invention is used for the pulse generator.

Description

Technical Field

[0001] The invention relates to an air-core compensation pulse generator power supply system based on a rise and fall controllable super brush, belonging to the technical field of inertial energy storage pulse power supply. Background Art

[0002] As an inertial energy storage high-power pulse power source, the pulse generator integrates inertial energy storage, electromechanical energy conversion and pulse forming. It has the comprehensive advantages of a "single component", such as high energy storage density, high power density, high repetitive discharge frequency, etc. It has broad application prospects in national defense scientific research, military, industrial, civilian and other fields.

[0003] The stator and rotor yokes of air-core pulse generators use non-magnetic composite materials with higher specific strength and specific modulus to replace the ferromagnetic materials in iron-core motors. Air-core pulse generators are light in weight, do not have magnetic saturation limitation problems, can operate in stronger magnetic fields and extremely high speeds, have small winding inductance, are more suitable for generating instantaneous high voltage and strong pulse current, have the comprehensive advantages of high energy storage density and power density, and can meet the miniaturization requirements of high-power pulse power supply systems.

[0004] However, the air-core pulse generator has the following problems:

[0005] 1. Air-core pulse generators usually use high-power brushes and slip rings to connect the armature winding and the excitation winding into a loop, and establish the strong magnetic field required for discharge through self-excitation. The existence of brushes and slip rings increases the axial length of the motor, increases system wear, reduces reliability and system efficiency, and increases maintenance costs.

[0006] 2. When the pulse generator discharges, a strong instantaneous current flows through the armature winding. The large copper loss will cause the winding to generate a high temperature rise in a very short time. The heat capacity of traditional wires and the insulation level of insulating materials restrict the peak value and pulse width of the current. The traditional cooling structure has limited rapid heat dissipation capacity, poor heat dissipation conditions under high-speed operation, and low thermal conductivity of fiber epoxy resin composite materials, which limits the output capacity, continuous firing capacity, and further improvement of power density and energy density of the motor. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of large axial length of the motor and instantaneous strong current flowing through the armature winding of the existing air-core pulse generator, and to provide an air-core compensated pulse generator power supply system based on a controllable rise and fall super brush.

[0008] The air-core compensation pulse generator power supply system based on the controllable rise and fall super brush of the present invention comprises: a high-speed permanent magnet synchronous motor, an air-core pulse generator and a self-excited discharge rectifier;

[0009] The high-speed permanent magnet synchronous motor, the air-core pulse generator and the self-excited discharge rectifier are integrated. The high-speed permanent magnet synchronous motor drives the air-core pulse generator to the rated speed. The air-core pulse generator establishes a magnetic field through the positive feedback between the self-excited discharge rectifier and the excitation winding, and induces a no-load voltage on the armature winding. The armature winding discharges to the load through the self-excited discharge rectifier.

[0010] The air-core pulse generator comprises a stator and a rotor; the armature winding of the stator adopts a Litz wire made of a Cu-CNTs composite material, and the super brush of the rotor is a rise and fall controllable super brush made of a Cu-CNTs composite material.

[0011] Preferably, it also includes a casing, and the high-speed permanent magnet synchronous motor, the air-core pulse generator and the self-excited discharge rectifier are integrated and placed in the inner cavity of the casing.

[0012] Preferably, an inner spiral water channel is provided on the inner shell of the casing, and an outer spiral water channel is provided on the outer shell of the casing. Cooling medium is introduced into the inner spiral water channel and the outer spiral water channel to form an integrated cooling water channel.

[0013] Preferably, the cooling medium is cooling oil.

[0014] Preferably, the stator of the air-core pulse generator adopts a winding fixing structure made of carbon fiber.

[0015] Preferably, the rotor of the hollow pulse generator is made of fiber composite material to form a hollow rotor yoke and a multi-layer rim integrated energy storage rotor structure.

[0016] Preferably, a transposed water-cooling structure is provided inside the Litz wire used in the armature winding.

[0017] Preferably, the self-excited discharge rectifier is a disc-type self-excited discharge rectifier.

[0018] The air-core compensation pulse generator power supply system based on the controllable rise and fall super brush proposed by the present invention has the following advantages:

[0019] 1. The high-speed permanent magnet synchronous motor, air-core pulse generator and self-excited discharge rectifier are integrated to reduce the system volume and improve the system power density.

[0020] 2. The motor winding of the air-core pulse generator adopts Litz wire based on Cu-CNTs material, and a Litz wire internal transposition water cooling structure is set up to reduce motor loss while improving the motor's heat dissipation capacity.

[0021] 3. The hollow-core pulse generator adopts a controllable super brush device based on Cu-CNTs material. By coordinating and controlling its automatic rise and fall, it realizes brushless operation in the acceleration, discharge and energy retention stages of the pulse generator, reduces brush loss, and improves system efficiency, reliability and service life.

[0022] 4. The casing adopts an integrated cooling structure that combines internal spiral water channels with external spiral water channels, which can greatly remove the heat generated by high-speed permanent magnet synchronous motors, pulse generators and self-excited / discharge rectifiers, thereby suppressing the temperature rise of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the air-core compensation pulse generator power supply system based on the rise and fall controllable super brush according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of the hollow-core pulse generator of the present invention;

[0025] Figure 3 It is a schematic diagram of the stator structure of the air-core pulse generator of the present invention;

[0026] Figure 4 It is a schematic diagram of the armature winding structure of the air-core pulse generator of the present invention;

[0027] Figure 5 It is a schematic diagram of the rotor structure of the hollow pulse generator of the present invention;

[0028] Figure 6 It is a structural front view of the integrated cooling water channel of the present invention;

[0029] Figure 7 This is a left view of the structure of the integrated cooling water channel of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the integrated cooling water channel of the present invention;

[0031] Fig. 9 It is an axial view of the integrated cooling water channel of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0035] Embodiment 1:

[0036] Combine the following Figure 1-Figure 9 The present embodiment is described. The air-core compensation pulse generator power supply system based on the controllable super brush of the present embodiment comprises: a high-speed permanent magnet synchronous motor 1, an air-core pulse generator 2 and a self-excited discharge rectifier 3;

[0037] The high-speed permanent magnet synchronous motor 1, the air-core pulse generator 2 and the self-excited discharge rectifier 3 are integrated. The high-speed permanent magnet synchronous motor 1 drives the air-core pulse generator 2 to the rated speed. The air-core pulse generator 2 establishes a magnetic field through the positive feedback between the self-excited discharge rectifier 3 and the excitation winding, and induces a no-load voltage on the armature winding 211. The armature winding 211 discharges to the load through the self-excited discharge rectifier 3;

[0038] The air-core pulse generator 2 includes a stator 21 and a rotor 22; the armature winding 211 of the stator 21 is made of Litz wire made of Cu-CNTs composite material, and the super brush 223 of the rotor 22 is a controllable rise and fall super brush made of Cu-CNTs composite material.

[0039] In this embodiment, the high-speed permanent magnet synchronous motor 1, the air-core pulse generator 2 and the self-excited discharge rectifier 3 are integrated, which can effectively improve the power density of the integrated system and reduce the volume of the integrated system.

[0040] Furthermore, it also includes a casing 4 , in which the high-speed permanent magnet synchronous motor 1 , the air-core pulse generator 2 and the self-excited discharge rectifier 3 are integrated and placed in an inner cavity of the casing 4 .

[0041] Furthermore, an inner spiral water channel 41 is provided on the inner shell of the casing 4, and an outer spiral water channel 42 is provided on the outer shell of the casing 4. Cooling medium is introduced into the inner spiral water channel 41 and the outer spiral water channel 42 to form an integrated cooling water channel.

[0042] Furthermore, the cooling medium is cooling oil.

[0043] Furthermore, the stator 21 of the air-core pulse generator 2 adopts a winding fixing structure made of carbon fiber.

[0044] In this embodiment, the air-core pulse generator 2 includes a stator 21 and a rotor 22. The stator support structure is made of fiber composite materials instead of traditional ferromagnetic materials. The winding fixing structure is made of carbon fiber composite materials. The stator 21 has high strength and lightweight characteristics, and does not generate obvious eddy currents, thereby avoiding interference with the main magnetic field.

[0045] Furthermore, the rotor 22 of the hollow pulse generator 2 is made of fiber composite material to form a hollow rotor yoke and a multi-layer rim integrated energy storage rotor structure.

[0046] Furthermore, a transposed water cooling structure is provided inside the Litz wire used in the armature winding 211 .

[0047] Furthermore, the self-excited discharge rectifier 3 is a disc-type self-excited discharge rectifier.

[0048] The present invention includes a high-speed permanent magnet synchronous motor, an air-core pulse generator, a disc-type self-excitation / discharge rectifier and a casing. The pulse generator winding adopts a Litz wire based on low-loss Cu-CNTs material, and a transposition water cooling structure is arranged inside the Litz wire. In addition, the pulse generator adopts a controllable rise and fall super brush structure based on Cu-CNTs material. A spiral cooling water channel is arranged at the disc-type self-excitation / discharge rectifier inside the casing, which together with the spiral water channel outside the casing constitutes an integrated cooling structure.

[0049] In the present invention, Figure 1 As shown in the figure, the air-core compensation pulse generator power supply system based on the controllable super brush of the present invention comprises a high-speed permanent magnet synchronous motor 1, an air-core pulse generator 2, a disc-type self-excitation / discharge rectifier 3 and a housing 4. Figure 2 As shown in FIG. 1 , it is a schematic diagram of the structure of an air-core pulse generator. The air-core pulse generator 2 is composed of a stator 21 and a rotor 22. Figure 3 , which is a schematic diagram of the stator structure of an air-core pulse generator. The stator 21 includes an armature winding 211, a carbon fiber bandage 212 and a support tube 213. The structural schematic diagram of the armature winding 211 is shown in FIG. Figure 4 As shown. Figure 5 As shown in FIG. 1 , it is a schematic diagram of the rotor structure of an air-core pulse generator, wherein the rotor 22 includes a rotor yoke 221, a rotating shaft 222 and a super brush 223. Figure 6 FIG. 1 is a front view of the structure of the power supply system equipped with an integrated cooling water channel according to the present invention. Figure 7 FIG. 1 is a left view of the structure of the power supply system equipped with an integrated cooling water channel according to the present invention. Figure 8 It is a structural diagram of the integrated cooling water channel. Fig. 9It is an axial diagram of an integrated cooling water channel. A spiral water channel 41 is provided inside the casing, and a spiral water channel 42 is provided on the surface of the casing, which together constitute an integrated cooling structure. a represents the water inlet, and b represents the water outlet.

[0050] The stator of the air-core pulse generator adopts a winding fixing structure made of carbon fiber.

[0051] The armature winding of the air-core pulse generator is made of Cu-CNTs composite material.

[0052] The hollow pulse generator rotor is made of fiber composite material to form a hollow rotor yoke and a multi-layer rim integrated energy storage rotor structure.

[0053] The super brush of the hollow pulse generator adopts Cu-CNTs composite material.

[0054] In the present invention, Figure 2 and Figure 4 As shown, the armature winding 211 in the stator 21 of the hollow-core pulse generator 2 of the present invention adopts Litz wire based on low-loss Cu-CNTs material, and a transposed water-cooling structure is arranged inside the Litz wire, which can effectively reduce motor loss and heat generation, improve the heat dissipation performance of the motor, enhance its current carrying capacity and continuous firing capacity, and improve the overall performance and reliability of the inertial energy storage pulse power supply system.

[0055] like Figure 2 and Figure 5 The hollow pulse generator 2 of the present invention is made of fiber composite materials to form a hollow rotor yoke and a multi-layer rim integrated energy storage rotor structure, which reduces the interference required for each contact surface during rotor molding and effectively improves the strength and service life of the motor rotor. In addition, the rotor uses a super brush device made of low-loss Cu-CNTs material, which realizes brushless operation during the acceleration, discharge and energy retention of the pulse generator by coordinating and controlling its automatic rise and fall, reducing brush loss and improving system efficiency, reliability and service life.

[0056] like Figure 6-Figure 9 The casing 4 of the present invention adds an internal spiral water channel 41 on the basis of the traditional external spiral water channel 42 for cooling the pulse generator stator 21 and the high-speed permanent magnet synchronous motor 1 stator, so as to cool the self-excited / discharge rectifier 3, effectively solving the problem of heat source concentration in the pulse power supply system.

[0057] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary 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 the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. The air-core compensation pulse generator power supply system based on the controllable super brush is characterized by: It comprises: a high-speed permanent magnet synchronous motor (1), an air-core pulse generator (2) and a self-excited discharge rectifier (3); A high-speed permanent magnet synchronous motor (1), an air-core pulse generator (2) and a self-excited discharge rectifier (3) are integrated, the high-speed permanent magnet synchronous motor (1) drives the air-core pulse generator (2) to a rated speed, the air-core pulse generator (2) establishes a magnetic field through the positive feedback between the self-excited discharge rectifier (3) and the excitation winding, induces a no-load voltage on the armature winding (211), and the armature winding (211) discharges to a load through the self-excited discharge rectifier (3); The air-core pulse generator (2) comprises a stator (21) and a rotor (22); The armature winding (211) of the stator (21) adopts a Litz wire made of a Cu-CNTs composite material; The super brush (223) of the rotor (22) is a rise and fall controllable super brush made of Cu-CNTs composite material.

2. The air-core compensation pulse generator power supply system based on the controllable rise and fall super brush according to claim 1 is characterized in that: It also includes a housing (4); The high-speed permanent magnet synchronous motor (1), the air-core pulse generator (2) and the self-excited discharge rectifier (3) are integrated and placed in the inner cavity of the casing (4).

3. The air-core compensation pulse generator power supply system based on the controllable rise and fall super brush according to claim 2 is characterized in that: An inner spiral water channel (41) is provided on the inner shell of the casing (4), and an outer spiral water channel (42) is provided on the outer shell of the casing (4); cooling medium is introduced into the inner spiral water channel (41) and the outer spiral water channel (42) to form an integrated cooling water channel.

4. The air-core compensation pulse generator power supply system based on the controllable rise and fall super brush according to claim 3 is characterized in that: The cooling medium is cooling oil.

5. The air-core compensation pulse generator power supply system based on the rise and fall controllable super brush according to claim 1 is characterized in that: The stator (21) of the air-core pulse generator (2) adopts a winding fixing structure made of carbon fiber.

6. The air-core compensation pulse generator power supply system based on the rise and fall controllable super brush according to claim 1 is characterized in that: The rotor (22) of the hollow pulse generator (2) is made of fiber composite material to form a hollow rotor yoke and a multi-layer rim integrated energy storage rotor structure.

7. The air-core compensation pulse generator power supply system based on the rise and fall controllable super brush according to claim 1 is characterized in that: The armature winding (211) uses a Litz wire with a transposed water cooling structure disposed inside.

8. The air-core compensation pulse generator power supply system based on the rise and fall controllable super brush according to claim 1 is characterized in that: The self-excited discharge rectifier (3) is a disc-type self-excited discharge rectifier.

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