CN217469498U - High-voltage capacitor charging power supply - Google Patents
High-voltage capacitor charging power supply Download PDFInfo
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- CN217469498U CN217469498U CN202220979445.9U CN202220979445U CN217469498U CN 217469498 U CN217469498 U CN 217469498U CN 202220979445 U CN202220979445 U CN 202220979445U CN 217469498 U CN217469498 U CN 217469498U
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Abstract
The utility model discloses a high voltage capacitor charging power supply, including low voltage rectifier circuit, bridge type inverter circuit, resonant circuit, step up transformer, high voltage rectifier circuit and high voltage filter circuit, wherein: the low-voltage rectifying circuit is used for AC/DC conversion of alternating current and outputting direct-current voltage; the bridge inverter circuit and the resonance circuit are used for performing resonance transformation on the direct-current voltage and outputting bipolar voltage pulses; the step-up transformer and the high-voltage rectifying circuit are used for converting bipolar voltage pulses into unipolar voltage pulses to charge the high-voltage capacitor. The utility model discloses can effectively improve high-voltage capacitor's charging power and allow the instantaneous short circuit of power, shorten the charge time, and small, it is with low costs, can provide effectual energy for high frequency high voltage electromagnetic pulse source.
Description
Technical Field
The utility model particularly relates to an energy storage element technical field that charges specifically is a high voltage capacitor charging source.
Background
The high-voltage pulse discharge equipment is widely applied to the fields of environmental protection, electric power, manufacturing, military, high-energy physics, high-energy laser and the like. For example, in the environmental protection industry, for electrostatic precipitation, sewage treatment and waste treatment; the device is used in a limit overcurrent capacity test device of high-voltage electrical equipment in an electric power system; in industrial production, the method is used for electromagnetic induction processing and the like. In the above application fields, the energy storage element of the high voltage pulse discharging device mostly adopts a high voltage capacitor, and a charging power source of the high voltage capacitor is one of the important components of the high voltage pulse discharging device.
Common charging modes of a capacitor charging power supply include three types, namely RC power frequency (constant voltage) charging, power frequency L-C resonance constant current charging, resonance charging and the like, wherein the resonance charging mode can be further divided into series resonance, parallel resonance, series-parallel resonance and other types. The charging voltage of RC power frequency (constant voltage) high voltage mode output that charges is invariable, and the electric current of the early stage of charging is very big, needs series current limiting resistor, leads to charge efficiency very low, and the later stage of charging, the difference of power output voltage and condenser voltage is less, and current limiting resistor restricts charging current at less scope, and the charge time is very long. The power frequency L-C resonance constant current charging mode utilizes an L-C resonance loop to generate resonance, a constant energy storage capacitor charging current is generated, the rising voltage of a high-voltage capacitor is approximately linear, the charging loop is not provided with a current-limiting resistor, and the charging efficiency is higher. However, the charging frequency of the power frequency charging mode is low, so that the main disadvantages are large volume, heavy equipment, low automation degree, low charging efficiency and long charging time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high voltage capacitor charging source to the charging source among the prior art who provides in solving above-mentioned background art is bulky, equipment is heavy, degree of automation is low, and charging efficiency is low, the longer problem of charge time.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a high-voltage capacitor charging power supply, includes low voltage rectifier circuit, bridge inverter circuit, resonant circuit, step up transformer, high voltage rectifier circuit and high-voltage filter circuit, wherein:
the low-voltage rectifying circuit is used for performing AC/DC conversion on alternating current and outputting direct-current voltage;
the bridge inverter circuit and the resonance circuit are used for performing resonance transformation on the direct-current voltage and outputting bipolar voltage pulses;
the step-up transformer and the high-voltage rectification circuit are used for converting bipolar voltage pulses into unipolar voltage pulses and charging the high-voltage capacitor.
As a further aspect of the present invention: the bridge type inverter circuit is composed of IGBT switch units.
As the utility model discloses further scheme again: the IGBT switch unit comprises an IGBT stack body formed by one or more IGBT devices in series connection and/or parallel connection, a reverse cut-off diode and a reverse protection diode.
As a further aspect of the present invention: and the anode of the reverse protection diode is connected with the cathode of the IGBT stack body and the anode of the reverse cut-off diode.
As a further aspect of the present invention: the high-voltage filter circuit comprises a first filter unit and a second filter unit, wherein the first filter unit and the second filter unit are formed by connecting inductors and capacitors in series.
As a further aspect of the present invention: and the positive electrode of the inductor of the second filtering unit is connected with the positive electrode of the capacitor of the first filtering unit, the negative electrodes of the capacitors of the second filtering unit and the first filtering unit are led out, and the positive electrode of the capacitor in the second filtering unit is led out to form the positive electrode of the output.
In addition, in the embodiment of the present invention, two resistors are further connected in series between the output positive electrode and the output negative electrode, and the output positive electrode and the output negative electrode are used as the positive electrode and the negative electrode of the power output;
in addition, the present embodiment further includes a controller, the controller is connected to the bridge inverter circuit and a resistor between the positive electrode and the negative electrode of the output, and is used as a control device for power output.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can effectively improve high-voltage capacitor's charging power and allow the instantaneous short circuit of power, shorten the charge time, and small, it is with low costs, can provide effectual energy for high frequency high voltage electromagnetic pulse source.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage capacitor charging power supply.
In the figure: 100-low voltage rectification circuit, 200-bridge inverter circuit, 300-resonance circuit, 400-step up transformer, 500-high voltage rectification circuit, 600-high voltage filter circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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 can effectively improve high-voltage capacitor's charging power and allow the instantaneous short circuit of power, shorten the charge time, and small, it is with low costs, can provide effectual energy for high frequency high voltage electromagnetic pulse source.
Common charging modes of a capacitor charging power supply include three types, namely RC power frequency (constant voltage) charging, power frequency L-C resonance constant current charging, resonance charging and the like, wherein the resonance charging mode can be further divided into series resonance, parallel resonance, series-parallel resonance and other types. The charging voltage of RC power frequency (constant voltage) high voltage mode output that charges is invariable, and the electric current of the early stage of charging is very big, needs series current limiting resistor, leads to charge efficiency very low, and the later stage of charging, the difference of power output voltage and condenser voltage is less, and current limiting resistor restricts charging current at less scope, and the charge time is very long. The power frequency L-C resonance constant current charging mode utilizes an L-C resonance loop to generate resonance, a constant energy storage capacitor charging current is generated, the rising voltage of a high-voltage capacitor is approximately linear, the charging loop is not provided with a current-limiting resistor, and the charging efficiency is higher. However, the charging frequency of the power frequency charging mode is low, so that the main disadvantages are large volume, heavy equipment, low automation degree, low charging efficiency and long charging time
Based on this, please refer to fig. 1, in an embodiment of the present invention, a high voltage capacitor charging power supply includes a low voltage rectifier circuit 100, a bridge inverter circuit 200, a resonant circuit 300, a step up transformer 400, a high voltage rectifier circuit 500 and a high voltage filter circuit 600, wherein:
the low-voltage rectifying circuit 100 is used for performing AC/DC conversion on the alternating current to output a direct-current voltage;
the bridge inverter circuit 200 and the resonant circuit 300 are configured to perform resonant transformation on the dc voltage and output a bipolar voltage pulse;
the step-up transformer 400 and the high-voltage rectification circuit 500 are used for converting bipolar voltage pulses into unipolar voltage pulses to charge a high-voltage capacitor;
in the embodiment of the present invention, the bridge inverter circuit 200 is composed of an IGBT switch unit, which includes an IGBT stack composed of one or more IGBT devices connected in series and/or in parallel, a reverse blocking diode, and a reverse protection diode, wherein an anode of the reverse protection diode is connected to a cathode of the IGBT stack and an anode of the reverse blocking diode;
further, the high-voltage filter circuit 600 includes a first filter unit and a second filter unit, the first filter unit and the second filter unit are both composed of an inductor and a capacitor connected in series, wherein an inductor anode of the second filter unit is connected with a capacitor anode of the first filter unit, an output cathode is led out from capacitor cathodes of the second filter unit and the first filter unit, and an output anode is led out from a capacitor anode of the second filter unit.
Furthermore, in the embodiment of the present invention, two resistors are also connected in series between the output positive electrode and the output negative electrode, and the output positive electrode and the output negative electrode are used as the positive electrode and the negative electrode of the power output;
in addition, the present embodiment further includes a controller, which is connected to the bridge inverter circuit 200 and one resistor between the positive and negative output electrodes, and is used as a control device for power output.
The utility model discloses can effectively improve high-voltage capacitor's charging power and allow the instantaneous short circuit of power, shorten the charge time, and small, it is with low costs, can provide effectual energy for high frequency high voltage electromagnetic pulse source.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A high voltage capacitor charging source, comprising:
low-voltage rectifier circuit, bridge type inverter circuit, resonant circuit, step up transformer, high-voltage rectifier circuit and high-voltage filter circuit, wherein:
the low-voltage rectifying circuit is used for AC/DC conversion of alternating current and outputting direct-current voltage;
the bridge inverter circuit and the resonance circuit are used for performing resonance transformation on the direct current voltage and outputting bipolar voltage pulses;
the step-up transformer and the high-voltage rectification circuit are used for converting bipolar voltage pulses into unipolar voltage pulses and charging the high-voltage capacitor.
2. The high-voltage capacitor charging power supply according to claim 1, wherein said bridge inverter circuit is constituted by IGBT switching cells.
3. The high-voltage capacitor charging power supply according to claim 2, wherein said IGBT switching unit comprises an IGBT stack consisting of one or more IGBT devices connected in series and/or in parallel, a reverse blocking diode, and a reverse protection diode.
4. A high-voltage capacitor charging power supply according to claim 3, wherein an anode of said reverse protection diode is connected to a cathode of said IGBT stack and an anode of said reverse blocking diode.
5. The high-voltage capacitor charging power supply according to claim 1, wherein the high-voltage filter circuit comprises a first filter unit and a second filter unit, and the first filter unit and the second filter unit are respectively composed of an inductor and a capacitor which are connected in series.
6. The high-voltage capacitor charging power supply according to claim 5, wherein the positive inductor of the second filtering unit is connected with the positive capacitor of the first filtering unit, the negative capacitor of the second filtering unit and the negative capacitor of the first filtering unit leads out the negative output electrode, and the positive capacitor of the second filtering unit leads out the positive output electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979445.9U CN217469498U (en) | 2022-04-26 | 2022-04-26 | High-voltage capacitor charging power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979445.9U CN217469498U (en) | 2022-04-26 | 2022-04-26 | High-voltage capacitor charging power supply |
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| Publication Number | Publication Date |
|---|---|
| CN217469498U true CN217469498U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220979445.9U Active CN217469498U (en) | 2022-04-26 | 2022-04-26 | High-voltage capacitor charging power supply |
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| CN (1) | CN217469498U (en) |
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- 2022-04-26 CN CN202220979445.9U patent/CN217469498U/en active Active
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