CN103280954A - Output end strengthening device for square wave variable-frequency power source - Google Patents
Output end strengthening device for square wave variable-frequency power source Download PDFInfo
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- CN103280954A CN103280954A CN2013102185277A CN201310218527A CN103280954A CN 103280954 A CN103280954 A CN 103280954A CN 2013102185277 A CN2013102185277 A CN 2013102185277A CN 201310218527 A CN201310218527 A CN 201310218527A CN 103280954 A CN103280954 A CN 103280954A
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- square wave
- frequency power
- power source
- output end
- harmonic wave
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Abstract
The invention relates to a testing device for an electrical power system, in particular to an output end strengthening device for a square wave variable-frequency power source. The output end strengthening device for the square wave variable-frequency power source comprises a copper bar. The output end strengthening device for the square wave variable-frequency power source is characterized in that the copper bar is sleeved on the inner diameter of a magnetic core, and hot melt adhesive is filled in a gap part between the copper bar and the magnetic core. The output end strengthening device for the square wave variable-frequency power source has the advantages of replacing an existing smoothing reactor, being used for protecting internal IGBT elements, ensuring the quality of an output waveform, being capable of obviously reducing generation of a harmonic wave and preventing the harmonic wave from entering the interior of equipment, being capable of greatly reducing influences of the harmonic wave on the equipment, reducing cost and weight, and meanwhile achieving the aim of reducing the harmonic wave and preventing the harmonic wave.
Description
Technical field
The present invention relates to the electric power system experimental rig, relate in particular to a kind of output intensifying device for the square wave variable frequency power supply.
Background technology
The main high frequency switch power that adopts in the square wave variable frequency power supply of the test usefulness of electric power system, similarly power electronic equipment becomes topmost harmonic source.High order harmonic component produces very strong interference to equipment, and the main cause that harmonic wave produces is because due to the nonlinear load.The switching circuit of powerful square wave power is in interrupting process, and its output can produce high order harmonic component, and access arrangement inside produce to disturb it, even causes equipment to use.Usually many high-power square wave powers adopt the IGBT module, and are short especially but IGBT can tolerate the time of short circuit, if harmonic wave is excessive, cause IGBT to damage easily.
Summary of the invention
At the technical problem that exists in the above-mentioned prior art, the invention provides a kind of output intensifying device for the square wave variable frequency power supply.Can obviously reduce the generation of harmonic wave and stop harmonic wave access arrangement inside, can reduce the influence that harmonic wave produces equipment widely.
The present invention is achieved by the following technical solutions:
Being used for the output intensifying device of square wave variable frequency power supply, comprising copper bar, is that copper bar is placed in the magnetic core internal diameter, and gap portion between the two is filled with PUR.
The described output that is connected in square wave power for the output intensifying device of square wave variable frequency power supply.
Advantage of the present invention and beneficial effect are: substituted smoothing reactor originally, for the protection of inner IGBT element, guaranteed the quality of output waveform.Can obviously reduce the generation of harmonic wave and stop harmonic wave access arrangement inside, can reduce the influence that harmonic wave produces equipment widely.When reducing cost and weight, finish the purpose that reduces harmonic wave and stop harmonic wave equally.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the end view of Fig. 1.
Among the figure: magnetic core 1, copper bar 2, PUR 3.
Embodiment
The present invention is a kind of output intensifying device for the square wave variable frequency power supply, and as depicted in figs. 1 and 2, the present invention is made up of magnetic core 1, copper bar 2 and fixing PUR 3 of filling usefulness.Wherein copper bar 2 is set in the internal diameter of magnetic core 1, and gap portion is between the two filled PUR 3.The present invention guarantees the quality of output waveform for the protection of inner IGBT element.
The output that during use output intensifying device of the present invention is connected in square wave power gets final product.
For suppressing harmonic wave to the influence that equipment produces, can smoothing reactor all be installed in the input and output side of equipment, volume and the capacity of the reactor that the square wave power that power is more high need be installed are more big, will certainly increase weight and the cost of equipment like this.
The present invention is owing to be at original output copper bar 2 outer wrap one deck magnetizing mediums-magnetic cores 1, and fixes with PUR 3.When harmonic wave produced and attempt access arrangement inside, harmonic wave was absorbed by the magnetic core 1 on copper bar surface, can't the electronic devices and components of device interior be damaged.And magnetic core 1 parcel output copper bar forms a little electric capacity between magnetic core and the output copper bar, can alleviate the influence that nonlinear load brings, and reduces the generation of harmonic wave.Reduce the purpose that harmonic wave produced and stoped harmonic wave thereby reach.
Claims (2)
1. be used for the output intensifying device of square wave variable frequency power supply, comprise copper bar, it is characterized in that: copper bar (2) is located in magnetic core (1) internal diameter, and gap portion between the two is filled with PUR (3).
2. the output intensifying device for the square wave variable frequency power supply according to claim 1, it is characterized in that: described this output intensifying device is connected in the output of square wave power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102185277A CN103280954A (en) | 2013-06-04 | 2013-06-04 | Output end strengthening device for square wave variable-frequency power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102185277A CN103280954A (en) | 2013-06-04 | 2013-06-04 | Output end strengthening device for square wave variable-frequency power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103280954A true CN103280954A (en) | 2013-09-04 |
Family
ID=49063428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102185277A Pending CN103280954A (en) | 2013-06-04 | 2013-06-04 | Output end strengthening device for square wave variable-frequency power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103280954A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201758354U (en) * | 2010-08-23 | 2011-03-09 | 北京东展科博电子有限公司 | Motor protector |
| CN202058527U (en) * | 2011-03-01 | 2011-11-30 | 苏州工业园区海沃科技有限公司 | Magnetic core device based on high-power square-wave power output terminal |
| JP2013061322A (en) * | 2011-08-25 | 2013-04-04 | Mitsubishi Electric Corp | Direct current detection apparatus |
-
2013
- 2013-06-04 CN CN2013102185277A patent/CN103280954A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201758354U (en) * | 2010-08-23 | 2011-03-09 | 北京东展科博电子有限公司 | Motor protector |
| CN202058527U (en) * | 2011-03-01 | 2011-11-30 | 苏州工业园区海沃科技有限公司 | Magnetic core device based on high-power square-wave power output terminal |
| JP2013061322A (en) * | 2011-08-25 | 2013-04-04 | Mitsubishi Electric Corp | Direct current detection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130904 |