CN215733489U - Airborne intermediate frequency 400Hz harmonic wave filtering device - Google Patents
Airborne intermediate frequency 400Hz harmonic wave filtering device Download PDFInfo
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- CN215733489U CN215733489U CN202120698715.4U CN202120698715U CN215733489U CN 215733489 U CN215733489 U CN 215733489U CN 202120698715 U CN202120698715 U CN 202120698715U CN 215733489 U CN215733489 U CN 215733489U
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Abstract
The utility model belongs to the technical field of filters, and particularly relates to an airborne intermediate-frequency 400Hz harmonic filter device, which comprises: the harmonic filter circuit comprises an input component, a harmonic filter circuit and an output component; the input component is connected with the input end of the harmonic filter circuit, the output component is connected with the output end of the harmonic filter circuit, namely the harmonic filter circuit is suitable for being connected into an airborne 400Hz three-phase alternating current device through the input component and the output component so as to inhibit 5-order harmonics and 7-order harmonics generated by 400Hz six-pulse wave uncontrolled rectification; according to the utility model, by arranging the harmonic filter circuit and connecting the harmonic filter circuit to the airborne 400Hz three-phase alternating current equipment through the input assembly and the output assembly, the functions of inhibiting 5 th harmonic and 7 th harmonic generated by 400Hz six-pulse-wave uncontrolled rectification can be realized, the corresponding standards are met, and meanwhile, the size, the weight, the environmental adaptability, the sealing property and the surface corrosion resistance can also meet the requirements.
Description
Technical Field
The utility model belongs to the technical field of filters, and particularly relates to an airborne intermediate-frequency 400Hz harmonic filter device.
Background
The requirement of the airborne equipment on the current harmonic distortion rate needs to meet the requirement that the current harmonic distortion rate in GJB 181 airplane supply characteristics cannot be more than 10%, so that the harmonic filtering device needs to be restrained, and the requirements on the volume, the weight, the environmental adaptability, the sealing property and the surface corrosion resistance need to be met.
However, the harmonic wave filtering device on the market can not suppress 5 th harmonic waves and 7 th harmonic waves generated by the uncontrollable rectification of the six-pulse wave of the airborne equipment at 400 Hz.
Therefore, it is necessary to develop a new on-board if 400Hz harmonic filtering device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an airborne intermediate-frequency 400Hz harmonic filter device to solve the problem of how to suppress 5 th harmonic and 7 th harmonic generated by the uncontrolled rectification of an airborne device 400Hz six-pulse wave.
In order to solve the above technical problem, the present invention provides an airborne intermediate frequency 400Hz harmonic filtering apparatus, which includes: the harmonic filter circuit comprises an input component, a harmonic filter circuit and an output component; the input assembly is connected with the input end of the harmonic filter circuit, the output assembly is connected with the output end of the harmonic filter circuit, namely the harmonic filter circuit is suitable for being connected into an airborne 400Hz three-phase alternating current device through the input assembly and the output assembly so as to restrain 5 th harmonic waves and 7 th harmonic waves generated by 400Hz six-pulse wave uncontrolled rectification.
Further, the input assembly includes: the first input screw, the second input screw and the third input screw are respectively connected with three-phase signal wires of the airborne 400Hz three-phase alternating current equipment; the harmonic filter circuit is suitable for being connected into the airborne 400Hz three-phase alternating current equipment through the first input screw rod, the second input screw rod and the third input screw rod.
Further, the output assembly includes: the first output screw, the second output screw and the third output screw are respectively connected with three-phase signal wires of the airborne 400Hz three-phase alternating current equipment; the harmonic filter circuit is suitable for being connected into the airborne 400Hz three-phase alternating current equipment through the first output screw rod, the second output screw rod and the third output screw rod.
Further, the harmonic filter circuit includes: the first differential mode inductor is arranged between the first input screw and the first output screw, the second differential mode inductor is arranged between the second input screw and the second output screw, and the third differential mode inductor is arranged between the third input screw and the third output screw; the first differential mode inductor, the second differential mode inductor and the third differential mode inductor are respectively connected into a fourth differential mode inductor, a fifth differential mode inductor and a sixth differential mode inductor, and the fourth differential mode inductor, the fifth differential mode inductor and the sixth differential mode inductor are connected in parallel through corresponding differential mode capacitors, namely the first differential mode inductor, the second differential mode inductor and the third differential mode inductor are suitable for filtering signals, and resonance points are formed by the fourth differential mode inductor, the fifth differential mode inductor, the sixth differential mode inductor and the corresponding differential mode capacitors so as to inhibit harmonic current.
Further, the first differential mode inductor, the second differential mode inductor and the third differential mode inductor adopt 220 muH differential mode inductors to filter six-pulse waves with the frequency of 400 Hz.
Further, 351 mu H differential mode inductors are adopted as the fourth differential mode inductors, the fifth differential mode inductors and the sixth differential mode inductors, and 18 mu F differential mode capacitors are adopted as the differential mode capacitors, so that a 2kHz resonance point is formed, and harmonic current of 2kHz is suppressed.
Furthermore, the harmonic filter circuit is positioned in the shell and is led out through the first input screw, the second input screw, the third input screw, the first output screw, the second output screw and the third output screw; the first input screw, the second input screw, the third input screw, the first output screw, the second output screw and the third output screw are silver-plated copper screws, all adopt polytetrafluoroethylene insulating gaskets to contact with the shell, and are sealed by silica gel.
Furthermore, the first differential mode inductor, the second differential mode inductor, the third differential mode inductor, the fourth differential mode inductor, the fifth differential mode inductor and the sixth differential mode inductor are formed by winding thin silicon steel magnetic core materials.
Further, the differential mode capacitor is suitable for adopting a non-inductive winding mode.
Further, the film of the differential mode capacitor is suitable for adopting a P-ZnRX safety film.
The utility model has the advantages that the harmonic filter circuit is arranged, and the input assembly and the output assembly connect the harmonic filter circuit into the airborne 400Hz three-phase alternating current equipment, so that the functions of inhibiting 5 th harmonic and 7 th harmonic generated by the 400Hz six-pulse wave uncontrolled rectification can be realized, the corresponding standards are met, and meanwhile, the volume, the weight, the environmental adaptability, the sealing property and the surface corrosion resistance can also meet the requirements.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a circuit diagram of an on-board IF 400Hz harmonic filtering apparatus of the present invention;
fig. 2 is a block diagram of an on-board if 400Hz harmonic filtering apparatus of the present invention.
In the figure:
the screw type hydraulic drive device comprises a first input screw 1, a second input screw 2, a third input screw 3, a first output screw 4, a second output screw 5, a third output screw 6 and a shell 7.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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.
Example 1
Fig. 1 is a circuit diagram of an on-board intermediate frequency 400Hz harmonic filtering apparatus of the present invention.
In this embodiment, as shown in fig. 1, the present embodiment provides an on-board intermediate frequency 400Hz harmonic filtering apparatus, which includes: the harmonic filter circuit comprises an input component, a harmonic filter circuit and an output component; the input assembly is connected with the input end of the harmonic filter circuit, the output assembly is connected with the output end of the harmonic filter circuit, namely the harmonic filter circuit is suitable for being connected into an airborne 400Hz three-phase alternating current device through the input assembly and the output assembly so as to restrain 5 th harmonic waves and 7 th harmonic waves generated by 400Hz six-pulse wave uncontrolled rectification.
In this embodiment, by setting the harmonic filter circuit, and connecting the harmonic filter circuit to the onboard 400Hz three-phase ac equipment through the input component and the output component, the functions of suppressing 5 th harmonic and 7 th harmonic generated by the 400Hz six-pulse-wave uncontrolled rectification can be realized, the corresponding standards are met, and meanwhile, the volume, the weight, the environmental suitability, the sealing performance and the surface corrosion resistance can also meet the requirements.
Fig. 2 is a block diagram of an on-board if 400Hz harmonic filtering apparatus of the present invention.
In this embodiment, as shown in fig. 2, the input assembly includes: the first input screw 1, the second input screw 2 and the third input screw 3 are respectively connected with three-phase signal wires of an airborne 400Hz three-phase alternating current device; the harmonic filter circuit is suitable for being connected into an airborne 400Hz three-phase alternating current device through a first input screw 1, a second input screw 2 and a third input screw 3.
In this embodiment, as shown in fig. 2, the output assembly includes: the first output screw 4, the second output screw 5 and the third output screw 6 are respectively connected with three-phase signal wires of the airborne 400Hz three-phase alternating current equipment; the harmonic filter circuit is suitable for being connected into an airborne 400Hz three-phase alternating current device through a first output screw 4, a second output screw 5 and a third output screw 6.
In this embodiment, the harmonic filter circuit includes: a first differential mode inductance L1 arranged between the first input screw 1 and the first output screw 4, a second differential mode inductance L2 arranged between the second input screw 2 and the second output screw 5, and a third differential mode inductance L3 arranged between the third input screw 3 and the third output screw 6; the first differential mode inductor L1, the second differential mode inductor L2, and the third differential mode inductor L3 are respectively connected to a fourth differential mode inductor L4, a fifth differential mode inductor L5, and a sixth differential mode inductor L6, and the fourth differential mode inductor L4, the fifth differential mode inductor L5, and the sixth differential mode inductor L6 are connected in parallel through corresponding differential mode capacitors, that is, the first differential mode inductor L1, the second differential mode inductor L2, and the third differential mode inductor L3 are suitable for filtering signals, and resonance points are formed by the fourth differential mode inductor L4, the fifth differential mode inductor L5, the sixth differential mode inductor L6 and the corresponding differential mode capacitors, so as to suppress harmonic current.
In this embodiment, as shown in fig. 1, the first input screw 1 is connected to the a end, the first output screw 4 is connected to the a ' end, the second input screw 2 is connected to the B end, the first output screw 5 is connected to the B ' end, the third input screw 3 is connected to the C end, and the third output screw 6 is connected to the C ' end.
In this embodiment, the first differential-mode inductor L1, the second differential-mode inductor L2, and the third differential-mode inductor L3 adopt 220 μ H differential-mode inductors to filter a 400Hz six-pulse wave.
In the embodiment, 351 μ H differential mode inductors are adopted as the fourth differential mode inductors L4, the fifth differential mode inductors L5 and the sixth differential mode inductors L6, 18 μ F differential mode capacitors are adopted as the differential mode capacitors, and a 2kHz resonance point is formed to suppress harmonic current of 2 kHz.
In this embodiment, the harmonic filter circuit is located in the housing 7 and is led out through the first input screw 1, the second input screw 2, the third input screw 3, the first output screw 4, the second output screw 5, and the third output screw 6; the first input screw 1, the second input screw 2, the third input screw 3, the first output screw 4, the second output screw 5 and the third output screw 6 are silver-plated copper screws, and are all in contact with the shell 7 through polytetrafluoroethylene insulating gaskets, and are sealed through silica gel.
In this embodiment, the housing 7 is formed by machining a whole aluminum block by a milling machine, so that the electromagnetic interference caused by the gap leakage is reduced while the weight is light, the structural strength is ensured, and the surface is subjected to conductive oxidation and three-proofing treatment, so that the housing has high environmental adaptability.
In this embodiment, the first differential mode inductor L1, the second differential mode inductor L2, the third differential mode inductor L3, the fourth differential mode inductor L4, the fifth differential mode inductor L5, and the sixth differential mode inductor L6 are made of thin silicon steel core materials by winding, and have the advantages of strong current saturation resistance and low noise.
In the embodiment, the differential mode capacitor is suitable for adopting non-inductive winding, the winding method is that two pole plates respectively extend out a little in the opposite directions of the width of the core, the wound core is changed into a single-turn coil from a multi-turn coil, the current direction is changed at the same time, the length direction of the pole plates of the common winding method is changed into the width direction along the pole plates, the current path is greatly shortened, the self inductance is greatly reduced, and the harmonic wave filtering performance can be greatly improved.
In this embodiment, the film of the differential-mode capacitor is suitable for a P-ZnRX safety film, the P-ZnRX safety film is a zinc-aluminum alloy thickened edge area evaporated film, and a safety metalized polypropylene film with a fuse is attached inside.
In summary, the harmonic filter circuit is arranged, and the input component and the output component connect the harmonic filter circuit to the onboard 400Hz three-phase alternating current equipment, so that the function of suppressing 5 th harmonic and 7 th harmonic generated by the 400Hz six-pulse-wave uncontrolled rectification can be realized, the corresponding standard is met, and meanwhile, the volume, the weight, the environmental adaptability, the sealing property and the surface corrosion resistance can meet the requirements.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation. Moreover, the software programs referred to in the present application are all prior art, and the present application does not relate to any improvement of the software programs.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An airborne intermediate frequency 400Hz harmonic filter device, comprising:
the harmonic filter circuit comprises an input component, a harmonic filter circuit and an output component; wherein
The input assembly is connected with the input end of the harmonic filter circuit, and the output assembly is connected with the output end of the harmonic filter circuit, namely
The harmonic filter circuit is suitable for being connected into an onboard 400Hz three-phase alternating current device through an input component and an output component so as to inhibit 5 th harmonic waves and 7 th harmonic waves generated by the 400Hz six-pulse wave uncontrolled rectification.
2. The on-board IF 400Hz harmonic filtering apparatus of claim 1,
the input assembly includes: the first input screw, the second input screw and the third input screw are respectively connected with three-phase signal wires of the airborne 400Hz three-phase alternating current equipment;
the harmonic filter circuit is suitable for being connected into the airborne 400Hz three-phase alternating current equipment through the first input screw rod, the second input screw rod and the third input screw rod.
3. The on-board IF 400Hz harmonic filtering apparatus of claim 2,
the output assembly includes: the first output screw, the second output screw and the third output screw are respectively connected with three-phase signal wires of the airborne 400Hz three-phase alternating current equipment;
the harmonic filter circuit is suitable for being connected into the airborne 400Hz three-phase alternating current equipment through the first output screw rod, the second output screw rod and the third output screw rod.
4. The on-board IF 400Hz harmonic filtering apparatus of claim 3,
the harmonic filter circuit includes: the first differential mode inductor is arranged between the first input screw and the first output screw, the second differential mode inductor is arranged between the second input screw and the second output screw, and the third differential mode inductor is arranged between the third input screw and the third output screw;
the first differential mode inductor, the second differential mode inductor and the third differential mode inductor are respectively connected into a fourth differential mode inductor, a fifth differential mode inductor and a sixth differential mode inductor, and the fourth differential mode inductor, the fifth differential mode inductor and the sixth differential mode inductor are connected in parallel through corresponding differential mode capacitors, namely the first differential mode inductor, the second differential mode inductor and the third differential mode inductor are connected in parallel through corresponding differential mode capacitors
The first differential mode inductor, the second differential mode inductor and the third differential mode inductor are suitable for filtering signals, and resonance points are formed by the fourth differential mode inductor, the fifth differential mode inductor, the sixth differential mode inductor and corresponding differential mode capacitors to suppress harmonic current.
5. The on-board IF 400Hz harmonic filtering apparatus of claim 4,
the first differential mode inductor, the second differential mode inductor and the third differential mode inductor adopt 220 mu H differential mode inductors so as to filter six-pulse waves with the frequency of 400 Hz.
6. The on-board IF 400Hz harmonic filtering apparatus of claim 4,
the fourth differential mode inductor, the fifth differential mode inductor and the sixth differential mode inductor adopt 351 mu H differential mode inductors, and the differential mode capacitors adopt 18 mu F differential mode capacitors to form 2kHz resonance points so as to inhibit harmonic current of 2 kHz.
7. The on-board IF 400Hz harmonic filtering apparatus of claim 3,
the harmonic filter circuit is positioned in the shell and is led out through the first input screw, the second input screw, the third input screw, the first output screw, the second output screw and the third output screw;
the first input screw, the second input screw, the third input screw, the first output screw, the second output screw and the third output screw are silver-plated copper screws, all adopt polytetrafluoroethylene insulating gaskets to contact with the shell, and are sealed by silica gel.
8. The on-board IF 400Hz harmonic filtering apparatus of claim 4,
the first differential mode inductor, the second differential mode inductor, the third differential mode inductor, the fourth differential mode inductor, the fifth differential mode inductor and the sixth differential mode inductor are formed by winding thin silicon steel magnetic core materials.
9. The on-board IF 400Hz harmonic filtering apparatus of claim 4,
the differential mode capacitor is suitable for adopting non-inductive winding.
10. The on-board IF 400Hz harmonic filtering apparatus of claim 4,
the film of the differential mode capacitor is suitable for adopting a P-ZnRX safety film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120698715.4U CN215733489U (en) | 2021-04-06 | 2021-04-06 | Airborne intermediate frequency 400Hz harmonic wave filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120698715.4U CN215733489U (en) | 2021-04-06 | 2021-04-06 | Airborne intermediate frequency 400Hz harmonic wave filtering device |
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| Publication Number | Publication Date |
|---|---|
| CN215733489U true CN215733489U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120698715.4U Active CN215733489U (en) | 2021-04-06 | 2021-04-06 | Airborne intermediate frequency 400Hz harmonic wave filtering device |
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| CN (1) | CN215733489U (en) |
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2021
- 2021-04-06 CN CN202120698715.4U patent/CN215733489U/en active Active
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