CN210780104U - Harmonic suppression device for tail end frequency converter - Google Patents
Harmonic suppression device for tail end frequency converter Download PDFInfo
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- CN210780104U CN210780104U CN201922321817.XU CN201922321817U CN210780104U CN 210780104 U CN210780104 U CN 210780104U CN 201922321817 U CN201922321817 U CN 201922321817U CN 210780104 U CN210780104 U CN 210780104U
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- frequency converter
- motor
- cable
- converter
- control system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a device is administered to harmonic for terminal converter, its component parts are: the device comprises a frequency converter, an alternating current reactor, a shielding cable, a signal wire and a PLC control system; an alternating current reactor is added between the frequency converter and the motor, a cable between the output end of the frequency converter and the motor is laid by adopting a shielding cable, a power line and a signal line separately, and is connected with the frequency converter and the motor through a PLC control system for control. This patent increases alternating current reactor between converter and motor, and the cable adopts shielded cable, power line and signal line to separately lay between converter output and the motor, in the control system who uses PLC as the core, suitably increases the combination mode such as software filtering to detect signal and output control part when making software and reduces the harmonic current that the converter produced to reduce cable and the overheated problem of transformer that arouses because of harmonic current.
Description
Technical Field
The utility model belongs to low pressure distribution field, specifically exactly be one kind be used for this kind of total electrical load of industrial production factory building such as large-scale integrated circuit, liquid crystal display panel etc. great, public power load account for total load not high, and have the succinct practical harmonic treatment device of the motor equipment that the frequency conversion start required.
Background
The traditional harmonic treatment device is arranged in a centralized mode in a transformer substation, the space problem of the transformer substation can be caused, or the tail end of the transformer substation is provided with an EMC (electro magnetic compatibility) filter device, the space of a power station or an air conditioner room and other rooms is insufficient, and the total investment of the traditional harmonic treatment device is high.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned insufficiency, the utility model provides a harmonic treatment device for terminal converter here. The harmonic wave treatment device aims to solve the problem that space of a transformer substation is insufficient due to the fact that the conventional harmonic wave treatment device is arranged in a centralized manner in the transformer substation or space of a power station or a station room such as an air conditioner room is insufficient due to the fact that a filtering device such as EMC is arranged at the tail end of the transformer substation, and meanwhile the total investment of the harmonic wave treatment device is reduced.
The utility model discloses a realize like this, construct a harmonic treatment device for terminal converter, its characterized in that: the components are as follows: the device comprises a frequency converter, an alternating current reactor, a shielding cable, a signal wire and a PLC control system; an alternating current reactor is added between the frequency converter and the motor, a cable between the output end of the frequency converter and the motor is laid by adopting a shielding cable, a power line and a signal line separately, and is connected with the frequency converter and the motor through a PLC control system for control.
The utility model has the advantages of as follows: the utility model discloses an improve and provide a harmonic treatment device for terminal converter here, the utility model belongs to low voltage distribution field, specifically exactly one kind is used for this kind of total electrical load of industrial production factory building such as large-scale integrated circuit, liquid crystal display panel etc. to be bigger, public power load account for total load not high, and have the succinct practical harmonic treatment system of the motor equipment of frequency conversion start requirement. The harmonic wave treatment device aims to solve the problem that space of a transformer substation is insufficient due to the fact that the conventional harmonic wave treatment device is arranged in a centralized manner in the transformer substation or space of a power station or a station room such as an air conditioner room is insufficient due to the fact that a filtering device such as EMC is arranged at the tail end of the transformer substation, and meanwhile the total investment of the harmonic wave treatment device is reduced.
Drawings
Fig. 1 is a schematic view of the entire patent.
Wherein: the device comprises a frequency converter 1, an alternating current reactor 2, a shielded cable 3, a motor 4 and a PLC control system 5.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses an improve and provide a harmonic treatment device for terminal converter here, its component parts is: the device comprises a frequency converter 1, an alternating current reactor 2, a shielded cable 3, a signal wire and a PLC control system 5; an alternating current reactor 2 is additionally arranged between the frequency converter 1 and the motor 4, a cable between the output end of the frequency converter 1 and the motor 4 is separately laid by adopting a shielding cable 3, a power line and a signal line, and is connected with the frequency converter 1 and the motor 4 through a PLC (programmable logic controller) control system 5 for control.
The utility model reduces the electromagnetic radiation in the transmission process by adding the AC reactor between the frequency converter and the motor, and the cable between the frequency converter and the motor adopts the shielding cable and is separately distributed with other weak electric signal lines, thereby avoiding the radiation interference; in a control system taking a PLC as a core, software filtering of a detection signal and an output control part is properly added so as to enhance the self anti-interference capability of the system. And on the premise of reducing the harmonic treatment cost by a reasonable combination mode, the interference of harmonics is reduced, and the normal operation of equipment is maintained.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. The utility model provides a harmonic treatment device for end converter which characterized in that: the components are as follows: the device comprises a frequency converter (1), an alternating current reactor (2), a shielded cable (3), a signal wire and a PLC control system (5); an alternating current reactor (2) is additionally arranged between the frequency converter (1) and the motor (4), a cable between the output end of the frequency converter (1) and the motor (4) is laid by adopting a shielded cable (3) and a power line and a signal line separately, and is connected with the frequency converter (1) and the motor (4) through a PLC (programmable logic controller) control system (5) for control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922321817.XU CN210780104U (en) | 2019-12-23 | 2019-12-23 | Harmonic suppression device for tail end frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922321817.XU CN210780104U (en) | 2019-12-23 | 2019-12-23 | Harmonic suppression device for tail end frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210780104U true CN210780104U (en) | 2020-06-16 |
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ID=71049610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922321817.XU Active CN210780104U (en) | 2019-12-23 | 2019-12-23 | Harmonic suppression device for tail end frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210780104U (en) |
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2019
- 2019-12-23 CN CN201922321817.XU patent/CN210780104U/en active Active
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