Frequency converter capable of communicating

Abstract

The invention discloses a communicable frequency converter which comprises a frequency converter body with an inner cavity of a hollow structure and a functional device arranged in the inner cavity of the frequency converter body, the functional device comprises an AC / DC module, a DC / AC module, a rectification module, a transformer assembly, a control unit and a filtering module, and the input end of the AC / DC module is connected with a three-phase AC power supply. The output end of the AC / DC module is connected with the DC / AC module; the device has the advantages of being small in size and light in weight, under the cooperation of the AC / DC module and the DC / AC module, three-phase 115V / 360Hz-720Hz three-phase four-wire alternating current generated by onboard equipment such as a generator can be converted into single-phase pure and stable 220V / 50Hz alternating current standard mains supply, high efficiency and output power are achieved, power can be directly supplied to ground standard equipment, and the device can be widely applied to the field of power supply. The power supply can be used as aviation ground support equipment, a green gallery bridge, airport field operation, airplane maintenance and test, and a vehicle-mounted mobile power supply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aviation communication frequency converter, in particular to a communication frequency converter. BACKGROUND

[0002] The frequency converter is a power supply control device that converts the power supply of one frequency into another frequency by using the on-off action of power semiconductor devices; the communication frequency converter is a communication frequency converter that uses R485 communication for communication on the basis of the frequency converter; the frequency converter is often used in the aviation field; in order to reduce the weight of the aircraft and improve the power supply efficiency, 115V400Hz is widely used as a standard power supply in the international aviation field to control the equipment on the aircraft, while the ground support equipment, test instruments and internal equipment of the aircraft use standard 50 / 60Hz power supply; the communication frequency converter on the market is difficult to control the standard power supply to directly provide stable power supply for the ground standard equipment or the on-board equipment such as the generator. SUMMARY

[0003] The purpose of the present application is to provide a communication frequency converter to solve the problems raised in the background.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A communication frequency converter, comprising a frequency converter main body with a hollow structure and functional devices arranged in the inner cavity of the frequency converter main body, the frequency converter main body is composed of a substrate for carrying functional devices, vertical plates installed on both sides of the top end of the substrate, a front plate component installed on the front of the top end of the substrate, and a rear plate component installed on the back of the top end of the substrate, The functional devices include an AC / DC module, a DC / AC module, a rectifier module, a transformer assembly, a control unit and a filter module, the input end of the AC / DC module is connected to a three-phase alternating current power supply, the output end of the AC / DC module is connected to the DC / AC module, the AC / DC module is used to convert the alternating current of the three-phase alternating current power supply into stable high-voltage direct current, and the DC / AC module is used to invert the high-voltage direct current into stable standard power supply through a power MOS tube; the control unit is composed of an acquisition module and a communication module.

[0005] Further, the AC / DC module is used to convert the three-phase alternating current power supply of 115 volt 360Hz-400Hz alternating current into stable high-voltage direct current, and invert it into stable single-phase 220 volt 50Hz alternating current standard power supply through the DC / AC module.

[0006] Further, the filter module is electrically connected to the control unit, and the filter module is used to filter the input voltage, output voltage and communication signal.

[0007] Further, the collecting module is electrically connected with the communication module, the collecting module is used for collecting input current, voltage and output current parameters, when the parameters exceed normal range, uploading fault information report to the communication module and shutting down the functional device.

[0008] Further, the bottom of the base plate or the back of the rear plate component is provided with a connecting plate, and fasteners are arranged on the connecting plate to facilitate stable installation of the frequency converter body.

[0009] Further, the communication module adopts an RS422 communication chip.

[0010] The beneficial effects of the present application are: the present application forms the frequency converter body which can orderly install functional devices through the cooperation of the base plate, the vertical plate, the front plate component and the rear plate component, has small volume and light weight, and under the cooperation of the AC / DC module and the DC / AC module, converts three-phase 115V / 360Hz-720Hz three-phase four-wire alternating current generated by on-board equipment such as a generator into single-phase pure and stable 220V / 50Hz alternating current standard city power, has high efficiency and output power, can directly power ground standard equipment, can be used as aviation ground support equipment, as a green corridor bridge, military airport field operation, aircraft maintenance and testing, and vehicle-mounted mobile power supply. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural perspective view of the present application.

[0012] In the figure: 1, base plate; 2, connecting plate; 3, front plate component; 4, DC / AC module; 5, vertical plate; 6, AC / DC module; 7, rectifier module; 8, rear plate component; 9, transformer assembly; 10, filter module; 11, control unit. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0014] Please refer to Figure 1This invention provides a technical solution for a communicable frequency converter, comprising a frequency converter body with a hollow internal structure and functional components disposed within the internal cavity of the frequency converter body. The frequency converter body consists of a base plate 1 supporting the functional components, vertical plates 5 mounted on both sides of the top of the base plate 1, a front plate component 3 mounted on the front of the top of the base plate 1, and a rear plate component 8 mounted on the back of the top of the base plate 1. The vertical plates 5 can be made of a transparent material such as glass. The front plate component 3 can be provided with heat dissipation holes. A connecting plate 2 is provided at the bottom of the base plate 1 or on the back of the rear plate component 8. Fasteners are installed to securely mount the inverter body. The mentioned functional components include an AC / DC module 6, a DC / AC module 4, a rectifier module 7, a transformer assembly 9, a control unit 11, and a filter module 10. The input of the AC / DC module 6 is connected to a three-phase AC power supply, and the output of the AC / DC module 6 is connected to the DC / AC module 4. The AC / DC module 6 is used to convert the AC power from the three-phase AC power supply into a stable high-voltage DC power supply, and the DC / AC module 4 is used to invert the high-voltage DC power supply into a stable standard AC mains power supply through a power MOSFET.

[0015] The AC / DC module 6 mentioned above is used to convert a three-phase AC power supply of 115V 360Hz-400Hz AC to a stable high-voltage DC power supply, and then inverts it into a stable single-phase 220V 50Hz AC standard mains power supply through the DC / AC module 4. The three-phase AC power supply adopts a three-phase four-wire AC power supply. It should be noted that the filter module 10 is electrically connected to the control unit 11. The filter module 10 is used to filter the input voltage, output voltage and communication signals. The setting of the filter module 10 can prevent the external frequency converter and standard power supply from being interfered with.

[0016] In this embodiment, the control unit 11 mentioned consists of a data acquisition module and a communication module. The data acquisition module is electrically connected to the communication module. The data acquisition module is used to acquire input current, voltage and output current parameters. When the parameters exceed the normal range, it uploads fault information to the communication module and shuts down the functional device. The communication module uses, but is not limited to, an RS422 communication chip.

[0017] This compact, high-power, and high-efficiency communicable frequency converter can convert three-phase 115V 360Hz~720Hz three-phase four-wire AC power into stable single-phase 220V 50Hz standard AC power, directly powering standard ground equipment. This achieves energy saving and emission reduction, noise reduction, improved operational flexibility, and cost reduction. It can be used as aviation ground support equipment, as a green boarding bridge, for military airport field operations, aircraft maintenance and testing, and as a vehicle-mounted mobile power source. Preferably, it can convert 115V 400Hz AC power on aircraft into stable AC power.

[0018] 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.

[0019] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be understood that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. In the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a mechanical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Among these, there are various ways of detachable installation, such as by using a combination of plug-in and snap-fit, or by using bolt connections, etc.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A communicable frequency converter, characterized in that: The inverter body includes a hollow internal structure and functional components disposed within the internal cavity of the inverter body. The inverter body consists of a base plate supporting the functional components, vertical plates mounted on both sides of the top of the base plate, a front plate component mounted on the front of the top of the base plate, and a rear plate component mounted on the back of the top of the base plate. The functional components include an AC / DC module, a DC / AC module, a rectifier module, a transformer assembly, a control unit, and a filter module. The input terminal of the AC / DC module is connected to a three-phase AC power supply, and the output terminal of the AC / DC module is connected to the DC / AC module. The AC / DC module is used to convert the AC power from the three-phase AC power supply into stable high-voltage DC power, and the DC / AC module is used to invert the high-voltage DC power into stable standard AC mains power through a power MOSFET. The control unit consists of a data acquisition module and a communication module.

2. The communicable frequency converter according to claim 1, characterized in that: The AC / DC module is used to convert a three-phase AC power supply of 115V 360Hz-400Hz AC into a stable high-voltage DC power supply, and then invert it into a stable single-phase 220V 50Hz AC standard mains power supply through the DC / AC module.

3. A communicable frequency converter according to claim 1, characterized in that: The filtering module is electrically connected to the control unit and is used to filter the input voltage, output voltage, and communication signals.

4. A communicable frequency converter according to claim 1, characterized in that: The acquisition module is electrically connected to the communication module. The acquisition module is used to acquire input current, voltage and output current parameters. When the parameters exceed the normal range, the fault information is uploaded to the communication module and the functional device is shut down.

5. A communicable frequency converter according to claim 1, characterized in that: The bottom of the base plate or the back of the rear plate component is provided with a connecting plate, and fasteners are provided on the connecting plate to facilitate the secure installation of the inverter body.

6. A communicable frequency converter according to claim 1, characterized in that: The communication module uses an RS422 communication chip.

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