CN204696923U - A kind of high-power DC power supply voltage stabilizing circuit - Google Patents
A kind of high-power DC power supply voltage stabilizing circuit Download PDFInfo
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- CN204696923U CN204696923U CN201520369337.XU CN201520369337U CN204696923U CN 204696923 U CN204696923 U CN 204696923U CN 201520369337 U CN201520369337 U CN 201520369337U CN 204696923 U CN204696923 U CN 204696923U
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Abstract
The utility model relates to a kind of high-power DC power supply voltage stabilizing circuit, electric capacity C5 and IGBT of series connection is provided with between the positive and negative electrode of DC power supply, the drain electrode of described IGBT connects electric capacity C5, at the positive pole of described DC power supply, one voltage transformer BC2 is set, the signal output part of described voltage transformer BC2 connects a control chip, and the signal output part of described control chip connects the grid of described IGBT.The utility model, by the measurement of voltage transformer, is opened IGBT and is charged to electric capacity C5, to make up the reduction of DC power output end output voltage, effectively decrease ripple amplitude, decrease harmonic components, make output voltage more stable when output voltage reduces.
Description
Technical field
The utility model relates to a kind of voltage stabilizing circuit, particularly a kind of high-power DC power supply voltage stabilizing circuit.
Background technology
Along with domestic economy is growing, the demand of electronic circuit aspect constantly increases.For electronic circuit, the DC power supply of stable voltage is most important.DC power supply is the device forming steady current in holding circuit, and existing DC power supply, often produces harmonic influence, especially high-power DC power supply, has output voltage stability difference, shortcoming that ripple current is many.
Utility model content
The utility model main purpose is to solve the problem and deficiency, provides a kind of high-power DC power supply voltage stabilizing circuit reducing harmonic components.
For achieving the above object, the technical solution of the utility model is:
A kind of high-power DC power supply voltage stabilizing circuit, electric capacity C5 and IGBT of series connection is provided with between the positive and negative electrode of DC power supply, the drain electrode of described IGBT connects electric capacity C5, at the positive pole of described DC power supply, one voltage transformer BC2 is set, the signal output part of described voltage transformer BC2 connects a control chip, and the signal output part of described control chip connects the grid of described IGBT.
Further, described voltage stabilizing circuit also comprises the chopper circuit, transformer, the rectification circuit that are arranged on the first filter circuit near DC supply input side, the second filter circuit near DC power output end side and are arranged between the first filter circuit and the second filter circuit.
Further, described first filter circuit comprise be arranged on DC power anode inductance L 1, be arranged on electric capacity C1, C2 of connecting between DC power supply positive and negative electrode, electric capacity C1, C2 respectively parallel resistance R1 and R2.
Further, described second filter circuit comprise be arranged on DC power anode inductance L 2, be arranged on electric capacity C6, C7 of connecting between DC power supply positive and negative electrode, electric capacity C6, C7 respectively parallel resistance R3 and R4.
Further, described chopper circuit is the single-phase semi-bridge chopper circuit of one group of series connection.
Further, described transformer is resonance transformer.
Further, described rectification circuit is single-phase full-wave rectifer circuit.
To sum up content, a kind of high-power DC power supply voltage stabilizing circuit described in the utility model, by the measurement of voltage transformer, open IGBT to charge to electric capacity C5 when output voltage reduces, to make up the reduction of DC power output end output voltage, effectively decrease ripple amplitude, decrease harmonic components, make output voltage more stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, a kind of high-power DC power supply voltage stabilizing circuit, is applied to 600V high-power DC power supply, comprises the first filter circuit, chopper circuit, transformer, rectification circuit, filter circuit of pressure-stabilizing and the second filter circuit that set gradually.
First filter circuit comprise be arranged on DC power anode inductance L 1, be arranged on electric capacity C1, C2 of connecting between DC power supply positive and negative electrode, electric capacity C1, C2 respectively divider resistance R1 and R2 in parallel.First filter circuit plays elementary filter action in early stage.
Chopper circuit is the single-phase semi-bridge chopper circuit (VT1, VT2) of one group of series connection, and transformer is resonance transformer T, and rectification circuit is single-phase full-wave rectifer circuit.Single-phase semi-bridge chopper circuit connects the former limit of resonance transformer T, and single-phase full-wave rectifer circuit connects the secondary of resonance transformer T, at the chopping voltage that the secondary output pulse width of resonance transformer T is adjustable.
Filter circuit of pressure-stabilizing is provided with between single-phase full-wave rectifer circuit and the second filter circuit, filter circuit of pressure-stabilizing comprises electric capacity C5 and IGBT (VT3), be arranged in series between the positive and negative electrode that electric capacity C5 and IGBT is arranged on DC power supply, the drain electrode of IGBT connects electric capacity C5, the positive pole of DC power supply is provided with a voltage transformer BC2, the signal output part of voltage transformer BC2 connects a control chip (not shown), and the signal output part of control chip connects the grid of IGBT.
Voltage transformer BC2 is for detecting the voltage of DC power output end, if there is fluctuation in DC power output end, when DC power output voltage reduces, voltage transformer BC2 outputs signal to control chip, and control chip charges to electric capacity C5 after controlling to open IGBT, IGBT conducting, make up the reduction of DC power output end output voltage, effectively decrease ripple amplitude, decrease harmonic components, make output voltage more stable.
After filter circuit of pressure-stabilizing, be provided with the second filter circuit, comprise be arranged on DC power anode inductance L 2, be arranged on electric capacity C6, C7 of connecting between DC power supply positive and negative electrode, electric capacity C6, C7 respectively divider resistance R3 and R4 in parallel.Coordinate filter circuit of pressure-stabilizing by two stage filter circuit, further decrease ripple amplitude, strengthen the stable of output voltage.
As mentioned above, plan content given by reference to the accompanying drawings, can derive similar technical scheme.In every case be the content not departing from technical solutions of the utility model, any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (7)
1. a high-power DC power supply voltage stabilizing circuit, it is characterized in that: electric capacity C5 and IGBT being provided with series connection between the positive and negative electrode of DC power supply, the drain electrode of described IGBT connects electric capacity C5, at the positive pole of described DC power supply, one voltage transformer BC2 is set, the signal output part of described voltage transformer BC2 connects a control chip, and the signal output part of described control chip connects the grid of described IGBT.
2. a kind of high-power DC power supply voltage stabilizing circuit according to claim 1, is characterized in that: described voltage stabilizing circuit also comprises the chopper circuit, transformer, the rectification circuit that are arranged on the first filter circuit near DC supply input side, the second filter circuit near DC power output end side and are arranged between the first filter circuit and the second filter circuit.
3. a kind of high-power DC power supply voltage stabilizing circuit according to claim 2, it is characterized in that: described first filter circuit comprise be arranged on DC power anode inductance L 1, be arranged on electric capacity C1, C2 of connecting between DC power supply positive and negative electrode, electric capacity C1, C2 respectively parallel resistance R1 and R2.
4. a kind of high-power DC power supply voltage stabilizing circuit according to claim 2, it is characterized in that: described second filter circuit comprise be arranged on DC power anode inductance L 2, be arranged on electric capacity C6, C7 of connecting between DC power supply positive and negative electrode, electric capacity C6, C7 respectively parallel resistance R3 and R4.
5. a kind of high-power DC power supply voltage stabilizing circuit according to claim 2, is characterized in that: described chopper circuit is the single-phase semi-bridge chopper circuit of one group of series connection.
6. a kind of high-power DC power supply voltage stabilizing circuit according to claim 2, is characterized in that: described transformer is resonance transformer.
7. a kind of high-power DC power supply voltage stabilizing circuit according to claim 2, is characterized in that: described rectification circuit is single-phase full-wave rectifer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369337.XU CN204696923U (en) | 2015-06-02 | 2015-06-02 | A kind of high-power DC power supply voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369337.XU CN204696923U (en) | 2015-06-02 | 2015-06-02 | A kind of high-power DC power supply voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696923U true CN204696923U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520369337.XU Active CN204696923U (en) | 2015-06-02 | 2015-06-02 | A kind of high-power DC power supply voltage stabilizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204696923U (en) |
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2015
- 2015-06-02 CN CN201520369337.XU patent/CN204696923U/en active Active
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