CN203180797U - Six-pulse rectification and voltage regulation circuit - Google Patents
Six-pulse rectification and voltage regulation circuit Download PDFInfo
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- CN203180797U CN203180797U CN 201320158762 CN201320158762U CN203180797U CN 203180797 U CN203180797 U CN 203180797U CN 201320158762 CN201320158762 CN 201320158762 CN 201320158762 U CN201320158762 U CN 201320158762U CN 203180797 U CN203180797 U CN 203180797U
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- igbt modules
- igbt
- main power
- reactor
- phase main
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Abstract
The utility model relates to a six-pulse rectification and voltage regulation circuit. A lightning arrester is arranged between a three-phase main power supply and a reactor. Six IGBT modules form a rectifier bridge. The three-phase main power supply is respectively connected into input ends of the six IGBT modules. Each phase of the three-phase main power supply is respectively connected with the reactor in series, and is connected into an input ends of the six IGBT modules. A harmonic elimination capacitor set is arranged between the reactor and the IGBT modules. The capacitors of the harmonic elimination capacitor set are connected into a triangular structure and are respectively connected in parallel among the phases. Output ends of the six IGBT modules are connected with a load through a non-return diode and a filter capacitor. With the six-pulse rectification and voltage regulation circuit, current impact caused by grid voltage surge and over-voltage operation can be limited, interference from the grid can be prevented, and pollution of harmonic currents produced by a rectifying unit to the grid can be reduced.
Description
Technical field
The utility model relates to a kind of voltage stabilizing circuit, particularly a kind of six impulse commutation voltage stabilizing circuits.
Background technology
Alternating current is become galvanic process be called rectification, the circuit of bearing the rectification task is called rectification circuit.Rectification circuit is divided into halfwave rectifier and full-wave rectification by waveform; Be divided into single-phase rectifier and three phase rectifier etc. by the number of phases.In recent years, the IGBT regulator rectifier circuit obtains application more and more widely.
IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor, by the compound full-control type voltage driven type power semiconductor that BJT (double pole triode) and MOS (insulating gate type field effect tube) form, have the advantage of low conduction voltage drop two aspects of the high input impedance of MOSFET and GTR concurrently.The on-off action of IGBT is to form raceway groove by adding the forward grid voltage, base current is provided for the PNP transistor, makes the IGBT conducting.Otherwise, add the reverse swing door pole tension and eliminate raceway groove, cut off base current, IGBT is turn-offed.
Existing six impulse commutation voltage stabilizing circuits, six IGBT modules constitute rectifier bridge, the three-phase main power source inserts the input of described six IGBT modules respectively, the output of described six IGBT modules is connected with load with filtering capacitor by non-return diode, and the output of IGBT controller is connected with described six IGBT modules respectively.Because there is more harmonic wave in the three-phase main power source, influence the waveform after the rectification.
The utility model content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of six impulse commutation voltage stabilizing circuits are provided, and can suppress the output harmonic wave electric current, and the waveform after the rectification is more steady.
For solving above technical problem, six impulse commutation voltage stabilizing circuits of the present utility model, six IGBT modules constitute rectifier bridge, the three-phase main power source inserts the input of described six IGBT modules respectively, the output of described six IGBT modules is connected with load with filtering capacitor by non-return diode, the output of IGBT controller is connected with described six IGBT modules respectively, it is characterized in that: each of described three-phase main power source inserts respectively the input of described six IGBT modules mutually behind the series reactor, between described reactor and the described IGBT module harmonic elimination capacitor group is installed, the electric capacity connection triangular in shape of described harmonic elimination capacitor group and be connected in parallel on respectively each mutually between.
With respect to prior art, the utility model has been obtained following beneficial effect: reactor and harmonic elimination capacitor group are installed before the IGBT module, can limit the rush of current that line voltage sudden change and switching overvoltage cause, the interference from electrical network can be stoped, the harmonic current of rectification unit generation can be reduced again to the pollution of electrical network.
As preferred version of the present utility model, be provided with lightning arrester between described three-phase main power source and the described reactor.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, accompanying drawing only provides reference and explanation usefulness, and is non-in order to limit the utility model.
Fig. 1 is the structural representation of the utility model six impulse commutation voltage stabilizing circuits.
Among the figure: the FSU. lightning arrester; L. reactor; C1. harmonic elimination capacitor group; D. non-return diode; C2. filtering capacitor; Rf. load.
Embodiment
As shown in Figure 1, six impulse commutation voltage stabilizing circuits of the present utility model are provided with lightning arrester FSU between three-phase main power source and the reactor L.Six IGBT modules constitute rectifier bridge, the three-phase main power source inserts the input of six IGBT modules respectively, the output of IGBT controller is connected with six IGBT modules respectively, each of three-phase main power source inserts respectively the input of six IGBT modules mutually behind the series reactor L, harmonic elimination capacitor group C1 is installed between reactor L and the IGBT module, the electric capacity connection triangular in shape of harmonic elimination capacitor group C1 and be connected in parallel on respectively each mutually between; The output of six IGBT modules is connected with load Rf with filtering capacitor C2 by non-return diode D.
The above only is the preferable possible embodiments of the utility model, and is non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (2)
1. impulse commutation voltage stabilizing circuit, six IGBT modules constitute rectifier bridge, the three-phase main power source inserts the input of described six IGBT modules respectively, the output of described six IGBT modules is connected with load with filtering capacitor by non-return diode, the output of IGBT controller is connected with described six IGBT modules respectively, it is characterized in that: each of described three-phase main power source inserts respectively the input of described six IGBT modules mutually behind the series reactor, between described reactor and the described IGBT module harmonic elimination capacitor group is installed, the electric capacity connection triangular in shape of described harmonic elimination capacitor group and be connected in parallel on respectively each mutually between.
2. six impulse commutation voltage stabilizing circuits according to claim 1 is characterized in that: be provided with lightning arrester between described three-phase main power source and the described reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158762 CN203180797U (en) | 2013-04-02 | 2013-04-02 | Six-pulse rectification and voltage regulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158762 CN203180797U (en) | 2013-04-02 | 2013-04-02 | Six-pulse rectification and voltage regulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180797U true CN203180797U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158762 Expired - Fee Related CN203180797U (en) | 2013-04-02 | 2013-04-02 | Six-pulse rectification and voltage regulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233372A (en) * | 2017-05-31 | 2018-06-29 | 上海申世电气有限公司 | A kind of harmonic filter |
-
2013
- 2013-04-02 CN CN 201320158762 patent/CN203180797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233372A (en) * | 2017-05-31 | 2018-06-29 | 上海申世电气有限公司 | A kind of harmonic filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 |