CN113285594A - Airborne aviation 270V power supply - Google Patents

Airborne aviation 270V power supply Download PDF

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Publication number
CN113285594A
CN113285594A CN202110596744.4A CN202110596744A CN113285594A CN 113285594 A CN113285594 A CN 113285594A CN 202110596744 A CN202110596744 A CN 202110596744A CN 113285594 A CN113285594 A CN 113285594A
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CN
China
Prior art keywords
power supply
filter
airborne
module
power distribution
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Pending
Application number
CN202110596744.4A
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Chinese (zh)
Inventor
彭勇钢
钱磊
周康俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyuan Aero Instruments Co Ltd
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Taiyuan Aero Instruments Co Ltd
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Priority to CN202110596744.4A priority Critical patent/CN113285594A/en
Publication of CN113285594A publication Critical patent/CN113285594A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/157Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

The invention belongs to the technical field of aviation airborne power supply conversion, and relates to a novel airborne aviation 270V power supply; the power supply comprises a protection circuit, an input filter, a boosting module, an output filter, an auxiliary power supply module, a digital intelligent control circuit and a self-detection circuit, and the power distribution function of the solid semiconductor is realized; the protection circuit is used as a pre-stage protection circuit of the boosting module and is controlled by adopting an impedance process; the power distribution and filter integrated design integrates an input filter, an output filter, a self-detection circuit and solid semiconductor power distribution into an independent metal whole, and the input filter and the output filter form an internal independent sub-cavity; the power supply adopts a digital control technology, a solid semiconductor power device, an integrated module design, a self-cooling mode of a uniform temperature plate, a forced air cooling mode of a fan, power distribution and filter integration, and solves the problem that the conventional small aircraft does not have a 270V generator.

Description

Airborne aviation 270V power supply
Technical Field
The invention belongs to the technical field of aviation onboard power supplies, relates to an aviation onboard secondary power supply conversion technology and an airplane intelligent power distribution system technology, and particularly relates to a novel onboard aviation 270V power supply.
Background
Various domestic airplanes enter a high-speed development stage, meanwhile, a power distribution system is gradually converted into a 270VDC direct-current system from 115VAC 400Hz alternating current, and with the development of intellectualization and semiconductor devices, the airplanes urgently need the 270VDC intelligent direct-current power distribution system.
For a large airplane, a 270V DC intelligent DC power distribution system can drive a 270V DC generator to output 270VDC voltage through an engine, and then the 270V DC generator outputs the 270VDC voltage to each load through an intelligent power distribution cabinet. In order to save space and reduce weight, only one 28V direct current generator on the airplane outputs 28VDC voltage, and the high-power load on the airplane uses high power, so that the airplane cable is very heavy. Therefore, 270VDC power conversion and intelligent power distribution devices are urgently needed to be arranged on small and medium-sized machines, the weight of the airplane is reduced, and the integration level, the detection rate and the safety of a power distribution system are improved.
Disclosure of Invention
The purpose of the invention is: the utility model provides an airborne aviation 270V power supply conversion and intelligent distribution device uses 28V constant current no electric capacity formula two-stage to step up 270V isolation power supply conversion technique, alleviates loss fever, pressure drop, the cable weight problem that the remote transmission brought, has improved distribution system integrated level, detection rate and security again to solve the small-size aircraft and do not have 270V generator problem.
In order to solve the technical problem, the technical scheme of the invention is as follows:
a novel airborne 270V power supply comprises a protection circuit, an input filter, a boosting module, an output filter, an auxiliary power supply module, a digital intelligent control circuit and a self-detection circuit, and realizes the power distribution function of a solid semiconductor;
the power distribution and filter integration design integrates an input filter, an output filter, a self-detection circuit and solid semiconductor power distribution into an independent metal whole;
the input filter and the output filter form an internal independent sub-cavity, the power distribution of the solid semiconductor is realized, and the problems of arc discharge phenomenon controlled by the traditional relay and bottom reliability caused by the mechanical service life are solved.
The power distribution and filter integrated module is directly linked with the boosting module; the BOOST module is a two-stage BOOST isolation power supply, the front stage is a BOOST circuit, and the rear stage is a full-bridge push-pull circuit;
the protection circuit is used as a pre-stage protection circuit of the boosting module and is controlled by adopting an impedance process;
the digital DSP is adopted to control various solid-state semiconductors to realize output load voltage control and reverse connection prevention design, and the DSP acquires input and output voltage and current, internal temperature, fan effectiveness, input discrete quantity effectiveness, output RS-422A information effectiveness and other information to perform intelligent control.
The BOOST circuit is controlled by a transverse current single loop to remove a preceding-stage large capacitor and ensure wide-range input of 16-40V; the rear stage is a full-bridge push-pull circuit, 1-20 times of boosting ratio is guaranteed, and the overall efficiency of the power module is improved by adopting a synchronous sorting technology.
The power supply heat dissipation adopts a mode of combining air cooling and self-cooling of the temperature-uniforming plate, the fan provides a cold end for the temperature-uniforming plate, the temperature-uniforming plate is in direct contact with a heat source, the upper cover of the temperature-uniforming plate is tightly attached and pressed with the power supply shell, the high power density of the power supply is realized, and the heat dissipation is not a barrier of the power supply.
The power supply is of an integrated structure outside and is of a whole aluminum frame shape inside; the structural strength and the heat dissipation are both improved well;
the boosting module adopts a joint crimping mode to be tightly crimped with the temperature-equalizing plate, and heat is fully led out to the shell. The modules are connected in parallel in a distributed mode to achieve power improvement, automatic flow equalization and thermal equalization, and reliable work of products is guaranteed; the front end and the rear end of the boosting module are integrally crosslinked with power distribution and filter integrated metal to ensure electromagnetic compatibility;
the boosting module adopts a constant-current capacitor-free two-stage boosting isolation power conversion technology, and a 1KW module mode is used for forming a 1-30 KW-level 28V conversion 270V isolation boosting intelligent power distribution converter. A single power module is 1KW, and the power superposition is realized by connecting a plurality of modules in parallel and outputting current sharing.
The protection circuit is a front-end circuit which provides front-end input reverse connection prevention, impedance matching and surge suppression for a product. The impedance process control is adopted for the first time, the multi-strand parallel technology is adopted, the connecting wires are reduced, the number of short junction surface crimping points is controlled, and the nH and nF level parasitic parameter circuit process is realized.
The solid semiconductor power distribution directly corresponds to the load condition to realize time-sharing starting and power distribution, and meanwhile, positive and negative logic control is adopted, so that equipment which needs to be powered in an airborne emergency state is set to be in a normally closed mode, and the equipment can also be powered when communication fails or DSP fails.
The input filter, the output filter and the solid semiconductor power distribution are integrated in an independent metal whole, and the integrated design of the power distribution and the filter is realized. The modular design enables maintainability, reliability and electromagnetic compatibility to be improved. The power distribution and filter integrated module is directly cross-linked with the boosting module, so that the line loss is reduced.
The digital intelligent control circuit and the self-detection circuit collect input voltage and current, output voltage and current, internal temperature, fan effectiveness and input and output signal communication signal states, judgment is carried out according to possible fault types, an internal program has neural network autonomous learning capacity, and product reliability and minimum safety margin requirements of an airplane are guaranteed.
The invention has the beneficial effects that: the airborne aviation 270V power supply adopts a digital control technology, a solid-state semiconductor power device, an integrated module type design, a temperature-equalizing plate self-cooling mode, a fan forced air cooling mode, power distribution and filter integration, and solves the problem that the conventional small aircraft does not have a 270V generator. By using a 28V constant-current capacitor-free two-stage boosting 270V isolated power supply conversion technology, the problems of loss, heating, voltage drop and cable weight caused by long-distance transmission are reduced, and the integration level, detection rate and safety of a power distribution system are improved.
The novel airborne aviation 270V power supply has many characteristics, and the whole power is constituteed to the modularization mode, and forced air cooling and samming board self-cooling combine together, and digital intelligent collection and control, solid-state semiconductor power distribution, power switching and wave filter are integrated.
The power switching and the filter are integrated, an independent sub-cavity is formed, a solid state control mode is realized, and the problems of arc discharge and low reliability caused by the mechanical life of the traditional relay control are solved.
The mode of self-cooling of the temperature equalizing plate and forced air cooling of the fan is used, the fan provides a cold end for the temperature equalizing plate, the temperature equalizing plate is in direct contact with a heat source, the power density of a product is improved, and the highest finished product intelligent power distribution power converter power density 857W/kg at home and abroad at present is realized.
The digital DSP is adopted to control the solid semiconductor power device to realize the output load power distribution and reverse connection prevention design, the DSP collects the input and output voltage and current, the internal temperature, the fan rotating speed, the input discrete quantity validity, the output RS-422A information validity and other information and carries out intelligent control through a neural network autonomous learning algorithm.
The power distribution and the filter are integrated to form an independent sub-cavity, and a solid state control mode is realized, so that the problems of arc discharge and bottom reliability caused by mechanical service life of the traditional relay control are solved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiment of the present invention will be briefly explained. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a power supply configuration according to the present invention;
FIG. 2 is a schematic block diagram of the 270V power supply of the present invention;
FIG. 3 is a schematic block diagram of the interior of the boost module of the present invention;
FIG. 4 is a schematic diagram of the internal structure of the power supply of the present invention;
in the drawings, 1-a radiator fan assembly; 2-radiating red fins of the temperature-uniforming plate; 3-radiator fan socket, radiator fan plug; 4-conductive gasket I; 5-conductive gasket iii; 6-conductive gasket VI; 7-power input socket; 8-a communication socket; 9-conductive washer v; 10-an output socket; 11-conductive gasket iv; 12-a housing; 13-a conductive gasket; 14-a rear panel; i is a filter cavity of 270V/28V (output part); II is 270V/28V (output part) output connector; III is a 28V (input) filter cavity; IV is 28V (input) input connector.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Features of various aspects of embodiments of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. The following description of the embodiments is merely intended to better understand the present invention by illustrating examples thereof. The present invention is not limited to any particular arrangement or method provided below, but rather covers all product structures, any modifications, alterations, etc. of the method covered without departing from the spirit of the invention.
In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.
FIG. 1 is a schematic diagram of a power supply according to the present invention; the power supply heat dissipation adopts a combination mode of air cooling and uniform temperature plate self-cooling, for example, a heat dissipation fan combination 1 and a uniform temperature plate heat dissipation fin 2 in the figure realize the combination of air cooling and uniform temperature plate self-cooling, a fan provides a cold end for a uniform temperature plate, and the uniform temperature plate is directly contacted with a heat source to realize the premise of high power density of the power supply. The upper cover of the temperature equalizing plate is tightly attached and pressed with the power supply shell, so that heat dissipation can not become a barrier of a power supply, the power density of the product is improved, and the highest power density 857W/kg of the finished intelligent power distribution power supply converter at home and abroad at present is realized.
Fig. 2 is a schematic block diagram of a 270V power supply of the present invention, showing the cross-linking relationship among the protection circuit, the input filter, the boost module, the output filter, the auxiliary power supply module, the digital intelligent control circuit, the self-test circuit, and the solid-state semiconductor power distribution. The protection circuit is a front-end circuit which provides front-end input reverse connection prevention, impedance matching and surge suppression for a product. The digital intelligent control circuit and the self-detection circuit collect input voltage and current, output voltage and current, internal temperature, fan effectiveness and input and output signal communication signal states, judgment is carried out according to possible fault types, an internal program has neural network autonomous learning capacity, and product reliability and minimum safety margin requirements of an airplane are guaranteed.
The square block in fig. 3 is labeled as a BOOST circuit, i.e., the BOOST circuit is controlled by a single loop of transverse current to remove the large capacitance at the front stage and ensure the wide-range input of 16-40V; the push-pull circuit marked on the square block in the figure is a full-bridge push-pull circuit at the later stage, so that 1-20 times of boost ratio is ensured, and the overall efficiency of the power module is improved by adopting a synchronous sorting technology;
the power supply internal structure sub-cavity is designed as shown in fig. 4, a 270V/28V (output part) filter cavity I and a 28V (input part) filter cavity III form 28V and 270V internal independent sub-cavities, a solid state control mode is realized, and the problems of arc discharge phenomenon controlled by a traditional relay and low reliability caused by mechanical service life are solved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims (9)

1. The utility model provides an airborne aviation 270V power which characterized in that: the airborne aviation 270V power supply comprises a protection circuit, an input filter, a boosting module, an output filter, an auxiliary power supply module, a digital intelligent control circuit and a self-detection circuit, and the power distribution function of the solid semiconductor is realized;
the protection circuit is used as a pre-stage protection circuit of the boosting module and is controlled by adopting an impedance process;
the power distribution and filter integrated design integrates an input filter, an output filter, a self-detection circuit and solid semiconductor power distribution into an independent metal whole, and the input filter and the output filter form an internal independent sub-cavity;
the power distribution and filter integrated module is directly linked with the boosting module; the BOOST module is a two-stage BOOST isolation power supply, the front stage is a BOOST circuit, and the rear stage is a full-bridge push-pull circuit;
the digital DSP is adopted to control various solid-state semiconductors to realize output load voltage control and reverse connection prevention design, and the DSP acquires input and output voltage and current, internal temperature, fan effectiveness, input discrete quantity effectiveness, output RS-422A information effectiveness and other information to perform intelligent control.
2. The airborne 270V electrical power supply of claim 1, wherein: the BOOST circuit is controlled by a single loop of transverse current, and wide-range input of 16-40V is guaranteed; the rear stage is a full-bridge push-pull circuit, and a sufficient boosting ratio is ensured.
3. The airborne 270V electrical power supply of claim 2, wherein: the range of the boosting ratio is 1-20 times.
4. The airborne 270V electrical power supply of claim 1, wherein: the power supply heat dissipation adopts a mode of combining air cooling and self-cooling of the temperature equalizing plate, the fan provides a cold end for the temperature equalizing plate, the temperature equalizing plate is in direct contact with a heat source, and the upper cover of the temperature equalizing plate is tightly attached and pressed with the power supply shell.
5. The airborne 270V electrical power supply of claim 1, wherein: the power supply is integrated externally and is internally shaped like a whole aluminum frame.
6. The airborne 270V electrical power supply of claim 1, wherein: the boosting module is tightly pressed and connected with the temperature-equalizing plate in a fitting and pressing mode, and heat is led out to the shell; a plurality of modules are connected in parallel in a distributed mode to achieve power improvement, automatic current equalization and thermal equalization; the front end and the rear end of the boosting module are integrally crosslinked with power distribution and filter integrated metal to ensure electromagnetic compatibility.
7. The airborne 270V electrical power supply of claim 1, wherein: the boosting module adopts a constant-current capacitor-free two-stage boosting isolation power conversion technology, and a 1KW module mode is adopted to form a 1-30 KW-level 28V conversion 270V isolation boosting intelligent power distribution converter; a single power module is 1KW, and the power superposition is realized by connecting a plurality of modules in parallel and outputting current sharing.
8. The airborne 270V electrical power supply of claim 1, wherein: the protection circuit is a front-end circuit which provides front-end input reverse connection prevention, impedance matching and surge suppression for a product; and the impedance process control is adopted to realize the nH and nF level parasitic parameter line process.
9. The airborne 270V electrical power supply of claim 1, wherein: the solid semiconductor power distribution directly corresponds to the load condition to realize time-sharing starting and power distribution, and meanwhile, positive and negative logic control is adopted, so that equipment which needs to be powered in an airborne emergency state is set to be in a normally closed mode, and the equipment can also be powered when communication fails or DSP fails.
CN202110596744.4A 2021-05-28 2021-05-28 Airborne aviation 270V power supply Pending CN113285594A (en)

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