Direct-current movable type starting power supply control system of turbojet aero-engine

Abstract

The invention relates to the field of aero-engine starting power supplies, and discloses a turbojet aero-engine direct-current movable type starting power supply control system, which comprises a transformer used for converting input 380V three-phase alternating current into 32V and 400A adaptive output direct current; the rectifier module comprises a plurality of rectifier diodes and is used for converting the alternating current output by the transformer into direct current; the heat dissipation module is connected with the rectification module and used for heat dissipation; the control module comprises a knob, an indicating lamp, an alternating current voltmeter and a direct current voltmeter and is used for controlling the operation state of the system; the plurality of cables are used for completing input and output of a power supply and electrical connection among the modules; and the engine starting power plug is used for outputting the rectified direct current to external equipment, and the system can achieve starting power supply of the turbojet engine. Through the technical scheme that the transformer module is combined with the three-phase bridge rectifier module, the technical effect of efficient energy conversion is achieved.

Description

Technical Field

[0001] The invention relates to the field of aircraft engine starting power supplies, in particular to a direct current mobile starting power supply control system for a turbojet aircraft engine. Background Art

[0002] During the start-up process of a turbojet aircraft engine, an external power supply is usually required to provide stable direct current to drive the starter to complete engine rotation and ignition. However, in the prior art, traditional power supply vehicles are mostly used for starting power supply. These power supply vehicles are mainly composed of general transformers and rectifier modules, and their structural design is not optimized for the specific needs of engine starting. The insufficient output performance of the power supply vehicle leads to low starting efficiency, especially in scenarios where frequent starting or rapid load changes are required, there is a more prominent performance bottleneck.

[0003] The transformers and rectifier modules used in traditional power supply vehicles lack efficient design. For example, the core material of the transformer is mostly made of traditional silicon steel, which has high losses; the rectifier module uses a simple single-phase rectifier circuit, which has low rectification efficiency. These deficiencies directly lead to low overall energy utilization of the system, high power loss, and inability to fully meet the needs of high-power loads.

[0004] Under high power output conditions, the heat generated by the rectifier module and transformer is difficult to dissipate in a timely and effective manner. Common heat dissipation methods mainly rely on natural convection, which cannot meet the thermal management requirements of long-term working conditions. This problem of insufficient heat dissipation capacity can easily cause system overheating, resulting in reduced power output performance or even failure.

[0005] The output voltage of the existing power supply system has significant ripple and fluctuation, especially when the load changes or the external input voltage fluctuates, the output DC voltage is difficult to maintain stability. This situation will have an adverse effect on the starting performance of the turbojet engine, such as starting failure or delay, thus affecting the actual operating efficiency and reliability of the equipment. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a turbojet aircraft engine DC mobile starting power supply control system, which solves the problems of low energy conversion efficiency, insufficient heat dissipation capacity and unstable output performance in the existing turbojet aircraft engine starting power supply system.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a turbojet aircraft engine DC mobile starting power supply control system, comprising: Transformer, used to convert the input 380V three-phase AC power into 32V, 400A DC power for output; A rectifier module, including a plurality of rectifier diodes, for converting the alternating current output by the transformer into direct current; A heat dissipation module is connected to the rectifier module and is used for heat dissipation; A control module, including a knob, an indicator light, an AC voltmeter and a DC voltmeter, is used to control the operating status of the system; Multiple cables for completing the input and output of power supply and electrical connection between modules; The engine starting power plug is used to output rectified direct current to external equipment. The system can realize the starting power supply of the turbojet engine.

[0008] Furthermore, a turbojet aircraft engine DC mobile starting power supply control system includes a transformer for receiving 380V three-phase AC power and converting it into DC power that meets the output requirements of 32V, 400A, and providing input power suitable for a rectifier module; the rectifier module is composed of a plurality of rectifier diodes, and is used to efficiently rectify the AC power output by the transformer into DC power, and the rectifier module is designed as a three-phase bridge rectifier structure to improve the rectification efficiency and the stability of the DC power output; the heat dissipation module is closely connected with the rectifier module, and is used to efficiently dissipate the heat generated during the operation of the rectifier module through heat conduction and air convection, and the heat dissipation module adopts a heat sink configuration with an optimized layout to ensure the reliability of heat management; the control module The module includes knobs, indicator lights, AC voltmeters and DC voltmeters, which are used to control the operating status of the system and monitor the input and output voltage status in real time to ensure the intuitiveness and convenience of system operation; the system completes the input and output of the power supply and the electrical connection between modules through multiple high-conductivity cables. The cables are precisely wired to reduce power transmission losses and improve operational safety; the engine starting power plug is used to output rectified DC power to external equipment. The plug matches the specifications and interface form required for starting turbojet aircraft engines. The entire system achieves efficient energy conversion, stable power output and reliable thermal management through modular design, meeting the stringent requirements for DC power supply performance during the starting process of turbojet aircraft engines.

[0009] Preferably, the transformer is a 20-kilowatt three-phase transformer installed at the bottom of the box to provide stable energy conversion.

[0010] Preferably, the rectifier module includes 6 500V / 1000A rectifier diodes, each diode is used in conjunction with a heat sink to ensure stable operation and heat management of the rectifier.

[0011] Preferably, the heat dissipation module includes 6 heat sinks with a size of 200×400 mm, which are evenly distributed and installed above the rectifier module to form an efficient heat dissipation path.

[0012] Furthermore, the transformer is a 20-kilowatt three-phase transformer, which is installed at the bottom of the box. The transformer adopts high-conductivity winding materials and amorphous alloy cores, and achieves efficient energy conversion performance by optimizing the turns ratio and magnetic circuit design. The primary side of the transformer is connected to the input 380V three-phase AC power, and the secondary side outputs accurately calculated low-voltage AC power. The bottom installation method of the transformer not only optimizes the center of gravity of the equipment, but also facilitates the layout and electrical connection of internal modules, further improving the stability of the overall system; preferably, the rectifier module is composed of 6 500V / 1000A rectifier diodes, and the rectifier module adopts a three-phase bridge rectifier design. Each rectifier diode is used in conjunction with a heat sink with high thermal conductivity, and the heat sink is in close contact with the rectifier. And efficient heat conduction is used to quickly dissipate the working heat of the diode. The diode layout of the rectifier module is optimized to ensure the rectification efficiency and thermal stability during operation. At the same time, a voltage protection mechanism is added to the input circuit to avoid damage to the rectifier module due to excessive voltage. Preferably, the heat dissipation module includes 6 radiators with a size of 200×400mm, which are evenly distributed above the rectifier module. The heat dissipation module is connected to the rectifier diode through a heat pipe, and the heat generated during operation is guided to the surface of the radiator and dissipated by air convection. The distribution of the radiator is accurately calculated to form a good heat dissipation path and avoid local overheating problems. The overall design of the heat dissipation module further ensures the long-term stable operation and heat management efficiency of the system.

[0013] Preferably, the control module connects the knob, indicator light, AC voltmeter and DC voltmeter to the three-phase AC contactor respectively through wires, so as to monitor the input and output status in real time and control the on and off of the power supply.

[0014] Preferably, the cable comprises: 10 meters long 75 square cable, used to connect the output end of the rectifier module to the engine starting power plug; 10m long 10 square waterproof cable, used to connect 380V three-phase AC power supply to the system input.

[0015] Preferably, the engine starting power plug is of model PJ500T, which is used to match and connect with external equipment to provide a stable DC 32V output power supply.

[0016] Preferably, the size of the box is 1100×600×700 mm, and the internal structure of the box is divided into zones according to module functions, including a transformer zone, a rectifier module zone and a heat dissipation zone, so as to optimize space utilization and heat dissipation effect.

[0017] Furthermore, the control module connects the knob, indicator light, AC voltmeter and DC voltmeter to the three-phase AC contactor through wires. The knob is used to control the power on and off of the system. The indicator light can intuitively display the operating status of the system. The AC voltmeter and the DC voltmeter are respectively used to monitor the status of the input 380V three-phase AC power and the output status of the rectified 32V, 400A DC power. Through the centralized arrangement and precise connection of the control modules, real-time monitoring and status feedback are achieved during the operation of the system, ensuring the convenience of operation and the safety of system operation. Preferably, the cable includes two specifications, of which the 10-meter-long 75-square cable is made of high-conductivity material and is used to connect the output end of the rectifier module with the engine starting power plug. It can efficiently transmit large current without causing significant power loss. The 10-meter-long 10-square waterproof cable is used to connect the 380V three-phase AC power. 0V three-phase AC power supply and system input end adopt waterproof sheath design to ensure safe operation in harsh environment. The reasonable configuration and standardized wiring of these two cables further improve the transmission efficiency and safety performance of the system; preferably, the engine starting power plug is PJ500T model, which is strictly matched and connected with external equipment, and can provide stable DC 32V output power for turbojet aircraft engine starting. The contact structure of the plug is optimized to ensure the reliability and seismic resistance of electrical connection; preferably, the external dimensions of the box are 1100×600×700mm, and the internal structure is modularly functionally divided into transformer area, rectifier module area and heat dissipation area. The design of the box fully considers the optimization of space utilization and heat dissipation channels. The distribution of module areas ensures the electromagnetic compatibility and independence between the functional modules, and provides a convenient layout for operation and maintenance.

[0018] Preferably, the three-phase AC contactor is 380V / 100A and is used to distribute input power to the transformer and the control module.

[0019] Furthermore, the three-phase AC contactor is an electromagnetic AC contactor with a rated voltage of 380V and a rated current of 100 amperes. The contactor is used to realize the distribution and control of input power during system operation. The three-phase AC contactor introduces 380V three-phase AC power into the primary side of the transformer through its main contacts, providing stable input for the system's energy conversion. At the same time, it is connected to the control module through auxiliary contacts to realize the monitoring and control of the power on and off status. The contactor uses high-conductivity silver alloy contacts to ensure the conduction performance and anti-oxidation ability. Its electromagnetic operating mechanism is designed to be quickly disconnected and attracted, which can significantly reduce the risk of arcing during operation and extend the service life of the contactor. The contactor shell is made of high-strength flame-retardant material, providing good impact resistance and electrical insulation performance. At the same time, the installation position of the contactor is partitioned with other modules inside the box, avoiding the influence of electromagnetic interference on the system operation. The design and selection of the contactor effectively ensure the power supply stability and operation safety of the system, and meet the requirements of high current carrying capacity when high-power load is running.

[0020] Preferably, the system ensures that the DC power output by the rectifier is reliably and safely supplied to external devices through strict positive and negative pole wiring specifications, avoiding damage caused by wiring errors.

[0021] Furthermore, strict positive and negative pole wiring specifications are adopted to ensure that the DC power output by the rectifier can be reliably and safely supplied to external devices. The system clearly marks the positive and negative pole terminals of the output end of the rectifier module in the design, and uses color distinction and identification labels to prevent wiring errors. The connection between the positive and negative pole output ends and the cable adopts high-strength crimping connectors. The crimping part has been verified many times to ensure the conduction performance and anti-loosening ability. The positive and negative poles of the output cable are protected by independent cable sheaths respectively, and a waterproof and dustproof design is used to avoid interference and damage from external environmental factors. After the wiring is completed, the system's built-in polarity protection device can detect the positive and negative pole wiring status in real time, and immediately cut off the power output when a wiring error is detected to protect the safety of the rectifier module and external devices. In addition, the output current and voltage of the rectifier module are both protected by limiting, which can effectively prevent overcurrent or overvoltage problems caused by load changes or abnormal operations. Through the above design, the system maintains a stable DC output during operation, which not only meets the operation requirements of external equipment, but also improves the reliability and safety of the entire power supply system.

[0022] The present invention provides a turbojet aircraft engine DC mobile starting power supply control system, which has the following beneficial effects: 1. The present invention adopts a technical solution combining a transformer module with a three-phase bridge rectifier module to achieve the technical effect of efficient energy conversion. Compared with the technical solution of using a single rectifier module to directly process AC power in the prior art, the present invention effectively reduces the loss in the power conversion process by reasonably designing the transformer turns ratio, optimizing the rectifier circuit structure and introducing a resonance design, thereby solving the problem of low energy conversion efficiency in the prior art and improving the reliability and applicability of the overall system.

[0023] 2. The present invention adopts a heat dissipation module combined with a technical solution of heat conduction and air convection, achieving the technical effect of effectively controlling the temperature rise of the rectifier module and the transformer. Compared with the heat dissipation solution that simply relies on the heat sink in the prior art, the present invention improves the heat transfer efficiency by realizing efficient heat conduction between the diode and the heat sink, and by reasonably arranging the heat sink and the air channel, thereby solving the problem in the prior art that the heat cannot be dissipated in time, resulting in a decrease in equipment performance, and improving the operating stability of the system.

[0024] 3. The present invention achieves the technical effect of stable output voltage and adaptive load regulation through the technical solution of combining the rectifier module with the control module. Compared with the technical solution in the prior art in which the rectifier module output has large voltage ripple and limited load response capability, the present invention reduces the ripple amplitude of the DC voltage by introducing a filter capacitor, and monitors the input and output status in real time through the control module, thereby solving the problem of poor DC output quality and inability to adapt to load changes in the prior art, thereby improving the adaptability of the system and meeting the requirements for starting a turbojet aircraft engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a system framework diagram of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the specification 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.

[0027] Please refer to the attached drawings. An embodiment of the present invention provides a turbojet aircraft engine DC mobile starting power control system, including: a transformer, a rectifier module, a heat dissipation module, a control module, a cable and an engine starting power plug. The functions of each module are clear and they cooperate to achieve stable starting of the turbojet aircraft engine.

[0028] Design and principle of each module Transformer module Function: Reduce the input 380V three-phase AC power to low-voltage 32V, 400A DC power to meet the needs of subsequent rectifier modules.

[0029] Technical implementation: The transformer is a 20 kW three-phase transformer installed at the bottom of the box. It uses a magnetic core made of high-efficiency amorphous alloy material to reduce hysteresis loss and eddy current loss.

[0030] The primary side of the transformer is connected to the three-phase AC input power supply, and outputs a DC voltage suitable for the rectifier module through the turns ratio design.

[0031] Principle: Based on the electromagnetic induction principle of transformer:

[0032] in, is the input voltage, is the output voltage, and are the turns ratio of the primary and secondary coils respectively. The stable output voltage can be achieved by adjusting the turns ratio.

[0033] According to the electromagnetic induction principle of transformer: are the turns ratio of the primary and secondary coils respectively. Stable voltage output can be achieved by adjusting the turns ratio.

[0034] Rectifier module Function: Rectify the AC power output by the transformer into DC power to provide DC power for engine starting.

[0035] Technical implementation: The rectifier module consists of 6 500V / 1000A diodes and adopts a three-phase bridge rectifier structure to achieve the conversion of three-phase AC to DC.

[0036] Each diode is used with a 200×400mm heat sink, which is evenly distributed to ensure stable operation of the rectifier module under high current.

[0037] Principle: The three-phase bridge rectifier uses 6 diodes to form a rectifier bridge, which rectifies the positive half-cycle and negative half-cycle of the three-phase alternating current into positive current and outputs smooth direct current:

[0038] in, is the output DC voltage, is the AC phase voltage.

[0039] Cooling module Function: Effectively dissipate heat for high-heat components such as rectifier modules and transformers.

[0040] Technical implementation: The heat dissipation module includes 6 heat sinks with a size of 200×400mm, which are in close contact with the diodes of the rectifier module and quickly transfer heat to the surface of the heat sink through heat conduction.

[0041] With the natural convection design, the radiators are evenly distributed on the top of the box to ensure maximum heat dissipation efficiency.

[0042] Principle: According to the heat conduction formula:

[0043] in, is the heat conduction, is the thermal conductivity, is the contact area, is the temperature difference, To increase the heat transfer path distance, by increasing the contact area and optimize thermal paths , improve heat dissipation efficiency.

[0044] Control Module Function: Monitor the operation and control the circuit of the whole system.

[0045] Technical implementation: The control module includes a knob, an indicator light, an AC voltmeter and a DC voltmeter.

[0046] The knob is used to control the system power on and off, and the indicator light is used to indicate the system operating status in real time.

[0047] The voltmeter displays the input and output voltage values ​​in real time, allowing operators to monitor system operation.

[0048] Principle: The control module is connected to the three-phase AC contactor through wires. The AC contactor controls the power on and off of the primary side of the transformer to ensure the safety and ease of operation of the system.

[0049] cable Function: Complete the input and output of power supply and the electrical connection between modules.

[0050] Technical implementation: The system includes two types of cables: 10 meters long 75 square cable is used to connect the output end of the rectifier module to the engine starting power plug.

[0051] 10m long 10 square waterproof cable, used to connect 380V three-phase AC power supply to the system input.

[0052] Features: The cable is made of highly conductive materials and is designed with a waterproof protective casing to ensure power transmission efficiency and system safety.

[0053] Engine starter power plug Function: Deliver the DC power output by the rectifier module to the engine.

[0054] Technical implementation: The plug adopts PJ500T model, which meets the engine interface requirements and ensures stable physical connection and electrical performance.

[0055] Features: The plug has a high current carrying capacity (up to 1000 amps) and an output DC voltage of 32V, meeting the power requirements for engine starting.

[0056] System installation and debugging Installation Steps Cabinet installation: The box with the size of 1100×600×700mm is placed vertically, and the interior of the box is divided into functional areas, including transformer area, rectifier module area and heat dissipation area.

[0057] Transformer installation: A 20 kW three-phase transformer is installed at the bottom of the box, with the primary side connected to a three-phase AC power supply and the secondary side connected to a rectifier module.

[0058] Rectifier module installation: Install the rectifier module and heat sink, fix the rectifier module on the top of the box, and connect the input and output ports.

[0059] Cable Routing: Arrange 75 square cables and 10 square waterproof cables according to specifications, and ensure that the positive and negative poles are connected correctly.

[0060] Control module wiring: Connect the knob, indicator light and voltmeter to the AC contactor and transformer to realize the control and monitoring functions.

[0061] Debugging steps Connect the input power, start the system, and observe the indicator light status.

[0062] Use an AC voltmeter and a DC voltmeter to monitor the voltage values ​​of the transformer output and the rectifier module output respectively.

[0063] Perform engine start-up test to verify the stability and load adaptability of the DC 32V power supply output.

[0064] The step transformer is used to convert the input 380V three-phase AC power into DC power for output. It is the core component of the system's energy conversion and provides stable low-voltage AC output for the subsequent rectifier module. The performance of the transformer module directly affects the input power quality of the rectifier module and the efficiency of the entire system. Combined with the briefing content and the above-mentioned technical solutions, the design of the transformer needs to be optimized in terms of electromagnetic performance, loss control and installation layout.

[0065] In this embodiment, Transformer selection and installation: The transformer is a 20 kW three-phase transformer, which is installed at the bottom of the box to optimize the center of gravity and facilitate cable routing.

[0066] The primary side input of the transformer is connected to 380V three-phase AC power. Through a reasonable turns ratio design, it achieves a low-voltage 32V, 400A DC output, which is adapted to the input requirements of the subsequent rectifier module.

[0067] Transformer design: The magnetic core is made of amorphous alloy or nanocrystalline material to reduce iron loss and eddy current loss and improve the energy conversion efficiency of the transformer.

[0068] The winding wiring adopts a multi-layer structure, and the magnetic leakage and copper loss are reduced by optimizing the winding arrangement. The winding wire is made of high conductivity materials, and the insulation between windings is increased to improve the safety and reliability of system operation.

[0069] Working principle of transformer: According to the principle of electromagnetic induction, the transformer realizes voltage conversion through the turns ratio of the primary and secondary coils. The mathematical relationship is:

[0070] in, and are the primary and secondary side voltages respectively, and The number of turns of the primary and secondary windings is adjusted by the turns ratio, and the designed output voltage meets the input requirements of the subsequent rectifier module.

[0071] Transformer loss optimization: The main losses of the transformer include iron loss and copper loss, and their calculation formulas are: Iron loss (hysteresis loss and eddy current loss):

[0072] in, and are the hysteresis and eddy current coefficients, is the frequency, is the magnetic flux density. By using low-loss core materials (such as amorphous alloys), reducing the hysteresis coefficient and eddy current coefficient .

[0073] Copper loss:

[0074] in, is the winding current, is the winding resistance. Optimizing winding materials and layout can effectively reduce winding resistance .

[0075] Resonance characteristic design: Design a resonant circuit on the secondary side of the transformer, including a series resonant inductor and resonant capacitor , to achieve the matching of the resonant frequency and the input AC frequency (50Hz). The resonant frequency formula is:

[0076] Resonant circuits optimize quality factor , improve energy transfer efficiency:

[0077] in, is the equivalent load impedance. By selecting high-quality inductors and capacitors, the resonant circuit is ensured to be Stability and efficiency.

[0078] Electrical connection to the system: The primary side of the transformer is connected to a 380V input power supply through a three-phase AC contactor. The contactor controls the on and off state of the transformer to ensure the flexibility and safety of operation. The secondary side output is connected to the input end of the rectifier module through a wire to complete the transmission path from AC to DC.

[0079] The rectifier module is a key component that converts the AC power output of the transformer into DC power. It is connected to the secondary side of the transformer and is responsible for providing smooth and stable DC input to the load. It is an important part of the turbojet aircraft engine starting power supply. The performance of the rectifier module directly affects the system's power output quality and starting reliability. Therefore, its design needs to comprehensively consider rectification efficiency, thermal management and circuit stability.

[0080] In this embodiment, The structure and composition of the rectifier module: The rectifier module adopts a three-phase bridge rectifier circuit, which is composed of 6 500V / 1000A rectifier diodes. The positive and negative poles of the diodes are connected according to the circuit structure of the three-phase bridge rectifier, and the cathode of each diode forms a rectifier bridge with the anode of other diodes.

[0081] Each diode is equipped with a 200×400mm heat sink, which effectively dissipates heat through direct contact and is arranged in the upper part of the box, connected to the air convection cooling area to reduce heat accumulation.

[0082] Working principle of rectifier module: According to the principle of three-phase bridge rectifier circuit, the three-phase AC output from the transformer secondary is rectified by six diodes in the rectifier bridge for positive and negative half cycles respectively. In each instantaneous cycle, three diodes are turned on and the other three are turned off, realizing the following conversion: Positive half cycle: Two-phase current flows to the load through the conducting diodes.

[0083] Negative half cycle: The current in the opposite direction is conducted through the corresponding diode, forming a continuous DC output.

[0084] The theoretical value of the output voltage can be expressed by the formula:

[0085] in, is the output DC voltage, is the AC phase voltage.

[0086] Thermal management of rectifier modules: During the rectification process, the diode will generate heat due to its forward voltage drop and reverse recovery characteristics. Its power loss can be expressed as:

[0087] in, is the current passing through, The forward voltage drop of the diode is 0.04 V. The configured heat sink conducts heat quickly from the surface of the diode to the surface of the heat sink through heat conduction, and combines air convection cooling inside and outside the box to maintain the operating temperature of the diode within a safe range.

[0088] Circuit design and protection measures of rectifier module: The input of the rectifier circuit is connected to the output of the transformer secondary winding, and the output is connected to the engine starter power plug through a 75 square millimeter cable to ensure sufficient conductivity. To avoid overvoltage or overcurrent damage, the rectifier module is designed with a current limiting protection circuit and a reverse connection protection circuit to limit the risk of diode damage caused by excessive transient current.

[0089] Electrical connection and rectification efficiency optimization:

[0090] On the basis of three-phase bridge rectification, a smoothing capacitor is configured at the output end to further reduce the ripple of the output current. is the load current, is the input power frequency, For the filter capacitor value, by reasonably designing the capacitor capacity, the ripple voltage amplitude can be reduced and the stability of the DC output can be improved.

[0091] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A DC mobile starting power supply control system for a turbojet aircraft engine, characterized in that: include: Transformer, used to convert the input 380V three-phase AC power into 32V, 400A DC power for output; A rectifier module, including a plurality of rectifier diodes, for converting the alternating current output by the transformer into direct current; A heat dissipation module is connected to the rectifier module and is used for heat dissipation; A control module, including a knob, an indicator light, an AC voltmeter and a DC voltmeter, is used to control the operating status of the system; Multiple cables for completing the input and output of power supply and electrical connection between modules; The engine starting power plug is used to output rectified direct current to external equipment. The system can realize the starting power supply of the turbojet engine.

2. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The transformer is a 20-kilowatt three-phase transformer installed at the bottom of the box to provide stable energy conversion.

3. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The rectifier module includes six 500V / 1000A rectifier diodes, each of which is used in conjunction with a heat sink to ensure stable operation and heat management of the rectifier.

4. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The heat dissipation module includes 6 heat sinks with a size of 200×400 mm, which are evenly distributed and installed above the rectifier module to form an efficient heat dissipation path.

5. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The control module connects the knob, indicator light, AC voltmeter and DC voltmeter to the three-phase AC contactor through wires, so as to monitor the input and output status in real time and control the on and off of the power supply.

6. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The cable comprises: 10 meters long 75 square cable, used to connect the output end of the rectifier module to the engine starting power plug; 10m long 10 square waterproof cable, used to connect 380V three-phase AC power supply to the system input.

7. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The engine starting power plug is of the PJ500T model, which is used to match and connect with external equipment to provide a stable DC 32V output power supply.

8. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The box size is 1100×600×700mm, and the internal structure of the box is divided into zones according to module functions, including transformer zone, rectifier module zone and heat dissipation zone, to optimize space utilization and heat dissipation effect.

9. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The three-phase AC contactor is 380V / 100A and is used to distribute the input power to the transformer and the control module.

10. The turbojet aircraft engine DC mobile starting power supply control system according to claim 1, characterized in that: The system ensures that the DC power output by the rectifier is reliably and safely supplied to external devices through strict positive and negative pole wiring specifications, avoiding damage caused by wiring errors.

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