Lightweight high voltage power supply for electric air propulsion and method of designing the same

Abstract

The application is suitable for the field of power electronics, and provides a lightweight high-voltage power supply for electric air power propulsion and a design method thereof.The high-voltage power supply comprises an input voltage end, a full-bridge inverter metal-oxide semiconductor field effect transistor, a resonance capacitor, a magnetic integrated transformer group, a plurality of voltage doubler rectifiers, an arc striking suppression resistor, a feedforward constant power feedback control circuit, a current transformer, an overcurrent protection circuit, a load and a driving circuit.The main circuit of the application adopts the structure of full-bridge inverter-magnetic integrated transformer group-voltage doubler rectifier output, without additional addition of resonance inductor, parallel capacitor and output capacitor, so as to reduce the weight ratio of the high-voltage power supply in the electric air power propulsion aircraft;feedforward constant power control and arc striking suppression circuit are used in control, so as to guarantee the stable operation of the high-voltage power supply under the conditions of lightweight and high power density, and finally realize the lightweight and high reliability of the overall electric air power propulsion aircraft.

Description

Technical Field

[0001] This invention belongs to the field of power electronics technology, and in particular relates to a lightweight high-voltage power supply for electro-pneumatic propulsion and its design method. Background Technology

[0002] Electro-aerodynamic propulsion is a novel propulsion method. Unlike traditional mechanical motion that generates thrust, this method uses "ion wind" produced by high-voltage ionization of air. Furthermore, aircraft using this propulsion method are lightweight, which has attracted widespread attention from scholars.

[0003] Electro-aerodynamic propulsion relies on a high-power-density, miniaturized high-voltage power supply. However, existing high-voltage power supply solutions have low power density and large size, which cannot meet the application requirements of electro-aerodynamic propulsion aircraft.

[0004] Traditional LCC high-voltage power supply transformers have a large turns ratio with fewer primary windings and more secondary windings. The fewer turns in the primary winding means that the primary leakage inductance cannot fully achieve the magnetic integration of the resonant inductor, so an additional inductor needs to be connected in series outside the transformer to supplement it, which increases the weight of the converter. High-voltage transformers have more secondary windings and higher output voltage. Traditional insulation methods require a large amount of insulation material, resulting in low utilization of the transformer window area and an increase in the size of the transformer core, which in turn increases the weight of the converter.

[0005] In traditional high-voltage power supplies, full-bridge rectifiers and output capacitors are used for rectifier filtering. Full-bridge rectifier circuits require transformers with higher step-up ratios, which further increases the weight of transformer insulation materials and magnetic cores. At the same time, the output capacitors are large in size, which is not conducive to the high power density design of converters. Summary of the Invention

[0006] This invention provides a lightweight high-voltage power supply for electro-pneumatic propulsion, aiming to solve the problem that existing high-voltage power supplies require a large amount of insulating material.

[0007] This invention provides a lightweight high-voltage power supply for electro-pneumatic propulsion, the high-voltage power supply comprising: an input voltage terminal, a full-bridge inverter metal-oxide-semiconductor field-effect transistor, a resonant capacitor, a magnetically integrated transformer bank, multiple inductor rectifiers, an arc suppression resistor, a feedforward constant power feedback control circuit, a current transformer, an overcurrent protection circuit, a load, and a drive circuit;

[0008] The input voltage terminal is connected to the full-bridge inverter metal-oxide-semiconductor field-effect transistor;

[0009] The full-bridge inverter metal-oxide-semiconductor field-effect transistor has two output circuits. One output circuit is connected to one end of the resonant capacitor, and the other output is connected to one end of the current transformer.

[0010] The other end of the resonant capacitor and the other end of the current transformer are both connected to the input terminal of the magnetically integrated transformer group.

[0011] The output terminal of the magnetically integrated transformer group is connected to multiple inductor rectifiers;

[0012] Multiple of the aforementioned inductor rectifiers form an inductor rectifier group, one end of which is connected to one end of the load and the other end is connected to one end of the arc suppression resistor.

[0013] The other end of the arc-suppressing resistor is connected to the other end of the load;

[0014] The driving circuit is connected to the full-bridge inverter metal-oxide-semiconductor field-effect transistor, the feedforward constant power feedback control circuit, and the overcurrent protection circuit, respectively.

[0015] When the current transformer collects the resonant cavity current and triggers the overcurrent protection, the drive circuit starts to suppress arcing; the arc suppression resistor eliminates the arcing of the load by voltage division.

[0016] Preferably, the full-bridge inverter metal-oxide-semiconductor field-effect transistor specifically includes:

[0017] The first switch S1, the second switch S2, the third switch S3, and the fourth switch S4;

[0018] Let A be the midpoint between the first switch S1 and the third switch S3, and B be the midpoint between the second switch S2 and the fourth switch S4;

[0019] The resonant capacitor and the magnetically integrated transformer group are connected in series between points A and B.

[0020] Preferably, the magnetically integrated transformer group includes multiple transformers, and each transformer corresponds to one inductor rectifier;

[0021] The primary windings of the multiple transformers are connected in parallel, and the secondary windings are connected to the inductor rectifiers. The multiple inductor rectifiers are connected in series for output, and the output terminals include a first output terminal a and a second output terminal b.

[0022] All of the aforementioned transformers are integrated using magnetic integration technology;

[0023] The magnetically integrated transformer bank also includes: a parallel capacitor C. p and series inductor Lr ;

[0024] The resonant capacitor, the series inductor L r With the parallel capacitor C p Series connection;

[0025] The primary windings of the multiple transformers are connected to the parallel capacitor C. p Parallel connection.

[0026] Preferably, the arc-suppressing resistor is a power resistor, and the arc-suppressing resistor is connected in series with the second output terminal b;

[0027] The arc suppression resistor, the overcurrent protection circuit, and the current transformer constitute the arc suppression circuit.

[0028] Preferably, the magnetically integrated transformer group and the inductor rectifier are insulated with a curable insulating adhesive in addition to potting.

[0029] Preferably, the lightweight high-voltage power supply satisfies at least one of the following conditions:

[0030] The resonant capacitor is a CBB capacitor;

[0031] The load is a high-voltage electrode;

[0032] The ratio of the parallel capacitor to the resonant capacitor ranges from 0.4 to 0.8.

[0033] The control method of the feedforward constant power feedback control circuit is constant duty cycle frequency adjustment control.

[0034] Preferably, the number m of transformers in the transformer group is:

[0035]

[0036] Where P o Where M is the output power, k is the total mass of the high-voltage power supply, and m is the mass percentage of the designed transformer group. t For the mass of a single transformer, P t Rated power of a single transformer;

[0037] P t =βf r A c A e ;

[0038] Where β is a constant, the full bridge is 4.48, and f r Where A is the resonant frequency. c Let A be the window area. e Let be the cross-sectional area of ​​the magnetic core.

[0039] This invention also proposes a lightweight high-voltage power supply design method, which utilizes the high-voltage power supply described in any of the above claims, and the method includes the following steps:

[0040] Based on the high-voltage power supply design parameters, determine the resonant frequency, resonant capacitance, parallel capacitance, and resonant inductance parameters of the LCC converter;

[0041] Design parameters for magnetically integrated transformers;

[0042] Design an arc suppression circuit to eliminate arcing at the load electrode.

[0043] Preferably, the step of determining the resonant frequency, resonant capacitance, parallel capacitance, and resonant inductance parameters of the LCC converter based on the high-voltage power supply design parameters includes:

[0044] Based on the given maximum allowable temperature rise of the LCC converter, find the thermal resistance of the heat-generating device to determine the resonant frequency of the LCC converter;

[0045] Based on the converter design parameters and the selected resonant frequency, design the resonant capacitor, parallel capacitor, and resonant inductor parameters of the LCC converter.

[0046] Preferably, the step of designing the parameters in the magnetically integrated transformer includes:

[0047] The thickness of the magnetic shunt is designed based on the resonant inductance required by the LCC converter.

[0048] Design the number of layers in the secondary winding of the transformer based on the parallel capacitor required by the LCC converter.

[0049] The beneficial effects achieved by this invention are as follows: A lightweight high-voltage power supply for electro-aerodynamic propulsion includes: an input voltage terminal, a full-bridge inverter metal-oxide-semiconductor field-effect transistor, a resonant capacitor, a magnetically integrated transformer bank, multiple inductor rectifiers, an arc suppression resistor, a feedforward constant power feedback control circuit, a current transformer, an overcurrent protection circuit, a load, and a drive circuit. The main circuit of this invention adopts a structure of full-bridge inverter-magnetically integrated transformer bank-voltage doubler rectifier output, eliminating the need for additional resonant inductors, parallel capacitors, and output capacitors. This achieves the lightweight requirements of electro-aerodynamic propulsion aircraft and reduces the weight ratio of the high-voltage power supply in the aircraft. The use of feedforward constant power control and arc suppression circuits in the control system ensures stable operation of the high-voltage power supply under lightweight and high power density conditions, ultimately achieving overall lightweighting and high reliability for the electro-aerodynamic propulsion aircraft. Attached Figure Description

[0050] Figure 1 This is a circuit diagram of a lightweight high-voltage power supply for electro-pneumatic propulsion provided in an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the structure of a transformer in a lightweight high-voltage power supply for electro-pneumatic propulsion provided in an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the transformer structure dimensions in a lightweight high-voltage power supply for electro-pneumatic propulsion provided in an embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of the transformer cross-sectional structure dimensions in a lightweight high-voltage power supply for electro-pneumatic propulsion provided in an embodiment of the present invention.

[0054] Figure 5 This is a schematic diagram showing the dimensional relationship of a magnetically integrated transformer group for a lightweight high-voltage power supply used in electro-pneumatic propulsion, provided in an embodiment of the present invention.

[0055] Figure 6 An equivalent circuit diagram of a lightweight high-voltage power supply magnetic integrated transformer for electro-pneumatic propulsion provided in an embodiment of the present invention;

[0056] Figure 7 A schematic diagram of an overcurrent protection circuit for a lightweight high-voltage power supply for electro-pneumatic propulsion provided in an embodiment of the present invention;

[0057] Figure 8 This is a schematic diagram of a drive circuit for a lightweight high-voltage power supply used in electro-pneumatic propulsion, provided as an embodiment of the present invention.

[0058] Figure reference numerals: 1. Full-bridge inverter metal-oxide-semiconductor field-effect transistor; 2. Resonant capacitor; 3. Magnetically integrated transformer bank; 4. Inductive rectifier; 5. Arc suppression resistor; 6. Feedforward constant power feedback control circuit; 7. Current transformer; 8. Overcurrent protection circuit; 9. Solidifiable insulating adhesive; 10. Load and drive circuit. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0061] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0062] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Furthermore, the terms used in this specification include any and all combinations of the associated listed items.

[0063] The purpose of this invention is to provide a lightweight high-voltage power supply for electro-pneumatic propulsion, aiming to achieve lightweight and high power density in the high-voltage power supply. To achieve the above objective, the means adopted are as follows: the main circuit adopts a structure of full-bridge inverter-magnetic integrated transformer group-voltage doubler rectifier output; the insulating material uses a lighter curable insulating glue and is insulated by potting; the control uses feedforward constant power control and arc suppression circuit.

[0064] like Figure 1 As shown, a lightweight high-voltage power supply for electro-pneumatic propulsion includes: an input voltage terminal, a full-bridge inverter metal-oxide-semiconductor field-effect transistor 1, a resonant capacitor 2, a magnetically integrated transformer bank 3, multiple inductor rectifiers 4, an arc suppression resistor 5, a feedforward constant power feedback control circuit 6, a current transformer 7, an overcurrent protection circuit 8, a load, and a drive circuit; the resonant capacitor 2 is a CBB capacitor; the load is a high-voltage electrode. The structure of the overcurrent protection circuit 8 is as follows. Figure 6 As shown.

[0065] The input voltage terminal is connected to the full-bridge inverter metal-oxide-semiconductor field-effect transistor 1.

[0066] The full-bridge inverter metal-oxide-semiconductor field-effect transistor 1 has two output circuits. One output circuit is connected to one end of the resonant capacitor 2, and the other output is connected to one end of the current transformer 7.

[0067] The other end of the resonant capacitor 2 and the other end of the current transformer 7 are both connected to the input terminal of the magnetically integrated transformer group 3.

[0068] The output terminal of the magnetically integrated transformer group 3 is connected to multiple inductor rectifiers 4.

[0069] Multiple inductor rectifiers 4 form an inductor rectifier group. One end of the inductor rectifier group is connected to one end of the load, and the other end is connected to one end of the arc suppression resistor 5. The other end of the arc suppression resistor 5 is connected to the other end of the load.

[0070] The arc suppression resistor 5 is connected in series to the second output terminal b; the arc suppression resistor 5 is a power resistor, and the arc suppression resistor 5, the overcurrent protection circuit 8 and the current transformer 7 constitute the arc suppression circuit.

[0071] The output terminal b is connected to the overcurrent protection circuit 8 and the current transformer 7 respectively.

[0072] The driving circuit is connected to the full-bridge inverter metal-oxide-semiconductor field-effect transistor 1, the feedforward constant power feedback control circuit 6, and the overcurrent protection circuit 8, respectively.

[0073] The current transformer 7 collects the resonant cavity current. When the overcurrent protection is triggered, the drive circuit starts to suppress arcing. The arc suppression resistor 5 suppresses the arcing of the load by voltage division.

[0074] like Figure 1 As shown, the full-bridge inverter metal-oxide-semiconductor field-effect transistor 1 specifically includes:

[0075] The first switch S1, the second switch S2, the third switch S3, and the fourth switch S4;

[0076] Let A be the midpoint between the first switch S1 and the third switch S3, and B be the midpoint between the second switch S2 and the fourth switch S4;

[0077] The resonant capacitor 2 and the magnetically integrated transformer group 3 are connected in series between points A and B.

[0078] like Figure 6 As shown, the magnetically integrated transformer group 3 includes multiple transformers, each transformer corresponding to a superinductor rectifier 4;

[0079] The primary windings of multiple transformers are connected in parallel, and the secondary windings are connected to a multi-sensor rectifier 4. The multiple multi-sensor rectifiers 4 are connected in series for output, and the output terminals include a first output terminal a and a second output terminal b.

[0080] Multiple transformers are integrated using magnetic integration technology; the magnetically integrated transformer bank also includes: parallel capacitor C p and series inductor L r ; Resonant capacitor 2, series inductor L r With parallel capacitor C p Series connection; the primary windings of multiple transformers are connected in parallel with capacitor C. p Parallel connection.

[0081] like Figures 2-5As shown, the magnetically integrated transformer group and the inductor rectifier are insulated with a curable insulating adhesive 9.

[0082] like Figure 8 As shown, the drive circuit controls the operating frequency of the full-bridge inverter metal-oxide-semiconductor field-effect transistor 1. The feedforward constant power feedback control circuit 6 uses constant duty cycle frequency control. Parallel capacitor C... p The ratio of the resonant capacitor 2 is in the range of 0.4 to 0.8.

[0083] The number m of transformers in the transformer group is:

[0084]

[0085] Where P o Where M is the output power, k is the total mass of the high-voltage power supply, and m is the mass percentage of the designed transformer group. t For the mass of a single transformer, P t Rated power of a single transformer;

[0086] P t =βf r A c A e ;

[0087] Where β is a constant, the full bridge is 4.48, and f r Where A is the resonant frequency. c Let A be the window area. e Let be the cross-sectional area of ​​the magnetic core.

[0088] This invention also provides a design scheme for a lightweight high-voltage power supply, comprising the following steps:

[0089] Step S10: Determine the resonant frequency, resonant capacitor, parallel capacitor, and resonant inductor parameters of the LCC converter based on the high-voltage power supply design parameters. Since temperature rise is positively correlated with frequency, the lowest frequency among the above is selected as the resonant frequency.

[0090] Step S20: Design the parameters of the magnetically integrated transformer;

[0091] Step S30: Design an arc suppression circuit to achieve arc suppression of the load electrode.

[0092] Step S10 includes the following steps:

[0093] Step S11: Based on the given maximum allowable temperature rise of the LCC converter, find the thermal resistance of the heat-generating device to determine the resonant frequency of the LCC converter;

[0094] Step S12: Based on the converter design parameters and the selected resonant frequency, design the resonant capacitor, parallel capacitor, and resonant inductor parameters of the LCC converter.

[0095] Step S11 specifically includes the following steps:

[0096] A. The maximum frequency of the voltage doubler rectifier section under the maximum allowable design temperature rise condition is:

[0097]

[0098] Where I o For converter output current, T on For conduction time, f switch For switching frequency, R D_on For diode on-resistance, ΔT max For the maximum allowable design temperature rise, R t_D This is the thermal resistance of the diode.

[0099] B. The maximum frequency of the transformer section under the maximum allowable design temperature rise condition is:

[0100]

[0101] Where V o For converter output current, T d Dead time, f switch For switching frequency, n p n is the number of primary turns of the transformer, n is the transformer turns ratio, and A is the number of primary turns of the transformer. e For the effective cross-sectional area of ​​the transformer, V e For the effective volume of the transformer, k c And α are the transformer core parameters (given by the datasheet), R t_T This refers to the thermal resistance of the transformer core.

[0102] C. The maximum frequency of the inverter section under the maximum allowable design temperature rise condition is:

[0103]

[0104] in,

[0105] Where R mos_on R is the on-resistance of the MOSFET. o For the load driven by the converter, f on For the conduction frequency, R t_MOS This is the thermal resistance of the switching transistor.

[0106] Since temperature rise is positively correlated with frequency, the lowest frequency among the above frequencies is chosen as the resonant frequency.

[0107] fr =min(f switchD_max ,f switchT_max ,f switchI_max ).

[0108] Step S12 specifically includes the following steps:

[0109] like Figure 7 As shown, the parallel capacitor C p and series capacitor C r The calculation is as follows:

[0110]

[0111] C r =C n C p ;

[0112] Where n is the transformer turns ratio, U in_min For the minimum input voltage, I o C is the output current of the LCC converter. n For parallel capacitor C p With resonant capacitor C r The ratio is between 0.4 and 0.6.

[0113] Series inductor L r Calculated as:

[0114]

[0115] Step S20 includes the following steps:

[0116] Step S21: Design the thickness of the magnetic shunt based on the resonant inductance required by the LCC converter;

[0117] Step S22: Design the number of layers in the secondary winding of the transformer based on the parallel capacitor required by the LCC converter.

[0118] Specifically, step S21 includes:

[0119] The thickness of the magnetic shunt is designed based on the resonant inductance required by the LCC converter:

[0120]

[0121] Where L r Let m be the resonant inductance required for the LCC converter, and m be the number of transformers. The relevant terms a, b, c, d, e, m, and f are:

[0122] a = R c2 +0.5(R c1 +R5+R6)+R7+R cc ;

[0123]

[0124]

[0125]

[0126]

[0127]

[0128]

[0129] The reluctance R mentioned in the above formula c1 R c2 R5, R6, R7, R cc and P t for:

[0130]

[0131]

[0132]

[0133]

[0134]

[0135]

[0136] P t =βf r A c A e ;

[0137] Where Ac is the area of ​​the transformer magnetic column, μ i μ is the relative permeability of the magnetic core. s μ is the relative permeability of the toroidal core of the magnetic shunt, μ0 is the permeability of air, and l g1 l is the width of the first air gap. g2 The second air gap width, l c2 b is the distance from the edge post to the center post of the core. w b is the width of the magnetic core window. d W represents the thickness of the magnetic core side post. c For the core thickness, l c1 h1 is the length of the magnetic core side post, h2 is the distance from the magnetic shunt to the upper end of the magnetic core middle post, and h2 is the distance from the magnetic shunt to the lower end of the magnetic core middle post. o Where M is the output power, k is the total mass of the high-voltage power supply, and m is the mass percentage of the designed transformer group. tFor the mass of a single transformer, P t For a single transformer, β is a constant; for the full bridge, it is 4.48. r Where A is the resonant frequency. c Let A be the window area. e Cross-sectional area of ​​the magnetic core.

[0138] Step S22 includes the following specific steps:

[0139] A. Calculate the capacitance of the equivalent capacitance 1:

[0140]

[0141] Where C D1 With C D1 N represents the body capacitance of the high-voltage diode. S N represents the number of secondary turns. p This refers to the number of primary turns.

[0142] First, calculate the parasitic capacitance formed by the reflection from the voltage doubler rectifier circuit to the primary winding. Since this value is fixed, the equivalent capacitance 2 needs to be obtained by designing the number of layers in the secondary winding of the transformer. This step lays the groundwork for the design of the equivalent capacitance 2.

[0143] B. Calculate the capacitance of the equivalent capacitance 2:

[0144]

[0145] Where N p N represents the number of turns in the primary winding of the transformer. s C represents the number of turns in the secondary winding of the transformer. P C is the parallel capacitor required for the LCC converter. Wdg This refers to the parasitic capacitance of the transformer's secondary winding. This step calculates the required equivalent capacitance 2, which can be achieved by designing the number of layers in the transformer's secondary winding.

[0146] C. The number of layers in the transformer's secondary winding is calculated as follows:

[0147]

[0148] Where C Wdg ≤4C0;

[0149]

[0150]

[0151]

[0152]

[0153]

[0154] Where, N P N represents the number of turns in the primary winding of the transformer. S HLT(N) represents the number of turns in the secondary winding of the transformer. S ) represents the average secondary winding length, N layer The number of layers in the transformer secondary winding, ε0 is the dielectric constant of air, ε D δ is the relative permittivity of the secondary winding insulation, δ is the thickness of the secondary winding insulation, and d0 is the center distance of the copper wires.

[0155] Step S30 specifically includes:

[0156] The arc suppression circuit includes an overcurrent protection circuit and an arc suppression resistor. After the current transformer samples the resonant cavity current, a voltage is formed across resistor R1 through a filter circuit. When arcing occurs, the resonant cavity current surges, and the voltage across R1 exceeds the reference value set in the overcurrent protection circuit. This controls the driver chip to enter soft-start mode, allowing the output voltage to gradually recover to its rated value. Simultaneously, the arc suppression resistor, through voltage division, extinguishes the arc at the load electrodes. The parameters of resistor R1 are:

[0157]

[0158] Among them U ref I is the reference voltage for the overcurrent protection circuit. limit This is the maximum limiting current for the resonant cavity.

[0159] Arc suppression resistor value R y With power P y They are respectively:

[0160]

[0161]

[0162] Among them U o For output voltage, U i For the input voltage, I i η is the input current, and η is the converter efficiency.

[0163] This invention provides a high-voltage power supply solution for electro-aerodynamic propulsion aircraft, which features high power density, lightweight and high reliability, effectively reducing the weight of insulation materials and magnetic cores, and realizing a lightweight design for the high-voltage power supply.

[0164] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0165] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0166] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A lightweight high-voltage power supply for electric air-dynamic propulsion, characterized in that, The high-voltage power supply comprises: an input voltage end, a full-bridge inverter metal-oxide semiconductor field effect transistor, a resonance capacitor, a magnetic integrated transformer group, a plurality of multiple-sensing rectifiers, an arc suppression resistor, a feed-forward constant power feedback control circuit, a current transformer, an overcurrent protection circuit, a load and a driving circuit; The input voltage end is connected with the full-bridge inverter metal-oxide semiconductor field effect transistor; The full-bridge inverter metal-oxide semiconductor field effect transistor has two output circuits, one of which is connected with one end of the resonance capacitor, and the other is connected with one end of the current transformer; The other end of the resonance capacitor and the other end of the current transformer are both connected with the input end of the magnetic integrated transformer group; The output end of the magnetic integrated transformer group is connected with a plurality of multiple-sensing rectifiers; The plurality of multiple-sensing rectifiers form a multiple-sensing rectifier group, one end of which is connected with one end of the load, and the other end is connected with one end of the arc suppression resistor; The other end of the arc suppression resistor is connected with the other end of the load; The driving circuit is connected with the full-bridge inverter metal-oxide semiconductor field effect transistor, the feed-forward constant power feedback control circuit and the overcurrent protection circuit respectively; The current transformer collects the resonance cavity current, and when the overcurrent protection is triggered, the driving circuit starts to realize arc suppression; the arc suppression resistor suppresses the arc of the load through voltage division; The number of transformers in the transformer group m is: ； wherein is the output power, M is the total mass of the high-voltage power supply, k is the design transformer group mass ratio, is the mass of a single transformer, is the rated power of a single transformer; ； wherein, is a constant full-bridge 4.48, is the resonant frequency, is the window area, is the core cross-sectional area.

2. A lightweight high voltage power supply for electric air-dynamic propulsion as claimed in claim 1, characterized in that The full-bridge inverter metal-oxide semiconductor field effect transistor specifically comprises: a first switch tube S1, a second switch tube S2, a third switch tube S3 and a fourth switch tube S4; The midpoint of the first switch tube S1 and the third switch tube S3 is A, and the midpoint of the second switch tube S2 and the fourth switch tube S4 is B; The resonance capacitor and the magnetic integrated transformer group are connected in series between A and B.

3. A lightweight high voltage power supply for electric air-dynamic propulsion as claimed in claim 1, characterized in that, The magnetic integrated transformer group comprises a plurality of transformers, each of which corresponds to a multiple-sensing rectifier; The primaries of the plurality of transformers are connected in parallel, the secondaries are connected with the multiple-sensing rectifiers, the multiple-sensing rectifiers are connected in series, and the output end comprises a first output end a and a second output end b; The plurality of transformers are all integrated by using the magnetic integration technology; The magnetic integrated transformer set further comprises a parallel capacitor and a series inductor ; the resonant capacitor, the series inductor with the parallel capacitor series connection; The primaries of the plurality of transformers are each connected in parallel with the parallel capacitor are connected in parallel.

4. A lightweight high voltage power supply for electric air-dynamic propulsion as claimed in claim 3, characterized in that The arc suppression resistor is a power resistor, and the arc suppression resistor is connected in series with the second output end b; The arc suppression resistor, the overcurrent protection circuit and the current transformer constitute an arc suppression circuit.

5. A lightweight high voltage power supply for electric air-dynamic propulsion as defined in claim 1, characterized in that The magnetic integrated transformer group and the multiple-sensing rectifier are filled with insulating glue.

6. A lightweight high voltage power supply for electric air-dynamic propulsion as defined in claim 3, characterized in that The lightweight high-voltage power supply meets at least one of the following conditions: The resonance capacitor is a CBB capacitor; The load is a high-voltage electrode; The parallel capacitor and the resonance capacitor have a ratio value range of 0.4-0.8; The control mode of the feed-forward constant power feedback control circuit is constant duty ratio regulation frequency control.

7. A method for designing a lightweight high-voltage power supply, characterized by The method is applied to the high-voltage power supply of any one of claims 1-6, and the method comprises the following steps: According to the high-voltage power supply design parameters, the resonant frequency, resonant capacitance, parallel capacitance and resonant inductance parameters of the LCC converter are determined; The parameters of the magnetically integrated transformer are designed; An arc striking suppression circuit is designed to realize arc suppression of the load electrode.

8. The method of claim 7, wherein the high voltage power supply is designed to be lightweight. The step of determining the resonant frequency, resonant capacitance, parallel capacitance and resonant inductance parameters of the LCC converter according to the high-voltage power supply design parameters comprises: According to the given maximum allowed temperature rise of the LCC converter, the thermal resistance of the heat generating device is looked up to determine the resonant frequency of the LCC converter; According to the converter design parameters and the selected resonant frequency, the resonant capacitance, parallel capacitance and resonant inductance parameters of the LCC converter are designed.

9. The method of claim 7 or 8, wherein The step of designing the parameters of the magnetically integrated transformer comprises: According to the required resonant inductance of the LCC converter, the thickness of the magnetic shunt is designed; According to the required parallel capacitance of the LCC converter, the number of layers of the secondary winding of the transformer is designed.

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