CN102377352A - High-stability extra-high voltage direct current high voltage generator - Google Patents
High-stability extra-high voltage direct current high voltage generator Download PDFInfo
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- CN102377352A CN102377352A CN2010102640108A CN201010264010A CN102377352A CN 102377352 A CN102377352 A CN 102377352A CN 2010102640108 A CN2010102640108 A CN 2010102640108A CN 201010264010 A CN201010264010 A CN 201010264010A CN 102377352 A CN102377352 A CN 102377352A
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Abstract
The invention discloses a high-stability extra-high voltage direct current high voltage generator. The generator comprises a rectifying filter circuit, a voltage stabilization circuit, a voltage stabilization control circuit, a bridge type inversion output circuit and a high voltage resonant circuit, wherein the high voltage resonant circuit comprises a transformer; the transformer is provided with a primary winding and two secondary windings; the primary winding is connected with the output end of the bridge type inversion output circuit; the unlike end of the first secondary winding is connected with the like end of the second secondary winding and grounded; and each secondary winding is connected with a multi-step voltage-multiplying circuit, and the multi-step voltage-multiplying circuits on the two secondary windings are symmetrically arranged. Because the multi-step voltage-multiplying circuits are symmetrically arranged on the two secondary windings of the transformer, the opposite ripple current of the two-path circuit can be mutually offset, and the ripple of the output voltage can be greatly reduced through properly regulating the step number of the voltage-multiplying circuit and the size of a capacitor.
Description
Technical field
The present invention relates to a kind of high-voltage D.C. generator, particularly a kind of high stability extra-high voltage direct-current high pressure generator belongs to the high-voltage electrical apparatus technical field.
Background technology
The extra-high voltage direct-current power supply adopts voltage multiplying rectifier high-voltage output circuit output high direct voltage usually, and voltage multiplying rectifier high-voltage output circuit of the prior art comprises a transformer, and Secondary winding of transformer is connected with a C-W voltage-multiplying circuit; The C-W voltage-multiplying circuit was proposed by COCCROFT and WALTON in 1932, and its common topological structure is as shown in Figure 3, and shown in this figure is 3 rank voltage-multiplying circuits; The end of the same name of secondary winding is connected with capacitor C 4 one pins, and another pin of capacitor C 4 links to each other diode D1 plus earth with diode D1 negative pole and diode D2 positive pole; Capacitor C 1 is serially connected between the negative pole of positive pole and diode D2 of diode D1, and the negative pole of diode D2 is connected with the positive pole of triode D3, and capacitor C 5 is serially connected between the anodal and diode D3 negative pole of diode D2; The positive pole of diode D3 negative pole and diode D4 joins, and capacitor C 2 is serially connected between the negative pole of diode D3 positive pole and diode D4, and the positive pole of diode D4 negative pole and diode D5 joins; Capacitor C 6 is serially connected between diode D4 positive pole and the diode D5 negative pole; Diode D5 negative pole and diode D6 positive pole join, and capacitor C 3 is serially connected between diode D5 positive pole and the diode D6 negative pole, and diode D6 negative pole is voltage output end HV; Usually per 2 times is single order; Therefore, shown in Figure 3 is 3 rank, 6 voltage-multiplying circuits, can rectifying tube and electric capacity be added up according to the needs that use according to the diagram method of attachment; Realize the topology of voltage-multiplying circuit, combine Fig. 3 to briefly introduce the operation principle of this voltage-multiplying circuit at present:
AC power half cycle is to C4, C5, C6 charging during this circuit working, and C1, C2, C3 discharge, when getting into another half cycle, and C4, C5, C6 discharge, and C1, C2, C3 charging, so the ripple frequency of output HV is the frequency of transformer input.But this voltage-multiplying circuit is because electric capacity is discharged in series, and ripple is bigger, thereby influences the high direct voltage of extra-high voltage direct-current generator output.
Summary of the invention
Technical problem to above-mentioned existence the objective of the invention is: the high stability extra-high voltage direct-current high pressure generator that has proposed a kind of ultralow ripple.
Technical solution of the present invention is achieved in that a kind of high stability extra-high voltage direct-current high pressure generator; Comprise voltage stabilizing circuit that the electric main that is used for input converts galvanic current rectifying and wave filtering circuit into, is electrically connected with the output of described current rectifying and wave filtering circuit, the controlling circuit of voltage regulation that is used to control voltage stabilizing circuit output of being connected with the input of described voltage stabilizing circuit, with described circuit output end of pressure-stabilizing be electrically connected be used for the direct current of voltage stabilizing circuit output convert to alternating current the bridge type inverse output circuit, convert the also high pressure resonant tank of amplification of direct current to the output of the described inverter output circuit alternating current that is used for the output of bridge type inverse output circuit that is electrically connected; Described high pressure resonant tank comprises a transformer; Described transformer has an elementary winding and two secondary level windings; The elementary winding of described transformer is connected with the output of described bridge type inverse output circuit; The different name end of the first secondary grade winding of described transformer is connected and joins with ground with the end of the same name of the second secondary grade winding; Each secondary level winding is connected with multistage voltage-multiplying circuit, and the symmetrical setting of multistage voltage-multiplying circuit on two secondary level windings.
Preferably, the exponent number of described multistage voltage doubling rectifing circuit is 2～6 rank.
Because the utilization of technique scheme; The present invention compared with prior art has advantage: owing on two secondary winding of transformer, be provided with multistage voltage-multiplying circuit symmetrically; The ripple current that the two-way circuit is relative can be cancelled each other; The exponent number of suitable adjustment voltage-multiplying circuit and the size of electric capacity can make the ripple of output voltage significantly reduce.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Accompanying drawing 1 is the electric theory diagram of high stability extra-high voltage direct-current high pressure generator of the present invention;
Accompanying drawing 2 is the circuit diagram of voltage multiplying rectifier high-voltage output circuit of the present invention;
Accompanying drawing 3 is the circuit diagram of existing voltage multiplying rectifier high-voltage output circuit;
Wherein: 1, current rectifying and wave filtering circuit; 2, voltage stabilizing circuit; 21, first order voltage regulation unit; 22, second level voltage regulation unit; 3, controlling circuit of voltage regulation; 4, bridge type inverse output circuit; 5, high pressure resonant tank.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
High stability extra-high voltage direct-current high pressure generator as shown in Figure 1; Comprise current rectifying and wave filtering circuit 1, voltage stabilizing circuit 2, controlling circuit of voltage regulation 3, bridge type inverse output circuit 4 and high pressure resonant tank 5; Current rectifying and wave filtering circuit 1 is transformed to direct current with the electric main of importing and inputs to voltage stabilizing circuit 2; Voltage stabilizing circuit 2 carries out filtering according to the control of controlling circuit of voltage regulation 3 to the direct current of importing; Thereby the galvanic current pressure is inputed in the bridge type inverse output circuit 4; Described bridge type inverse output circuit 4 carries out the direct current of input to input to high pressure resonant tank 5 behind the exchange conversion, thereby alternating current is direct current and amplifies and to obtain stable high voltage direct current that above-mentioned current rectifying and wave filtering circuit 1, voltage stabilizing circuit 2, controlling circuit of voltage regulation 3, bridge type inverse output circuit 4 are common circuit through 5 rectifications of high pressure resonant tank; It does not invent main points for the present invention, at this its operation principle is repeated no more.
As shown in Figure 2; Described high pressure resonant tank 5 comprises a transformer, and this transformer comprises an elementary winding and two secondary level windings, and its elementary winding is connected with the output of bridge type inverse output circuit 4; In order to receive the alternating current of bridge type inverse output circuit 4 outputs; The different name end of the first secondary grade winding of transformer is connected with the end of the same name of the second secondary grade winding, and their difference ground connection, and two secondary level windings connect a multistage voltage-multiplying circuit respectively; And the symmetrical setting of multistage voltage-multiplying circuit on the two secondary grade windings; In the present embodiment, voltage-multiplying circuit is 3 rank voltage-multiplying circuits, is made up of capacitor C 4, C5, C6, C1, C2, C3 and diode D1, D2, D3, D4, D5, D6 with the voltage-multiplying circuit that the first secondary grade winding is connected; Form by capacitor C 7, C8, C9, C1, C2, C3 and diode D7, D8, D9, D10, D11, D12 with the voltage-multiplying circuit that the second secondary grade winding is connected; Its physical circuit annexation is following: the end of the same name of the first secondary grade winding is connected with a pin of capacitor C 4, and another pin of capacitor C 4 is connected with the positive pole of diode D1 negative pole and diode D2 respectively, and capacitor C 1 is serially connected between diode D1 positive pole and the diode D2 negative pole; Diode D2 negative pole and diode D3 positive pole join; Capacitor C 5 is serially connected between diode D2 positive pole and the diode D3 negative pole, and diode D3 negative pole and diode D4 positive pole join, and capacitor C 2 is serially connected between diode D3 positive pole and the diode D4 negative pole; Diode D4 negative pole and diode D5 positive pole join; Capacitor C 6 is serially connected between diode D4 positive pole and the diode D5 negative pole, and diode D5 negative pole and diode D6 positive pole join, and capacitor C 3 is serially connected between diode D5 positive pole and the diode D6 negative pole; The different name end of the second secondary grade winding is connected with capacitor C 7 one pins, and capacitor C 7 another pins are connected with diode D7 negative pole and diode D8 positive pole, and diode D7 is anodal and diode D1 positive pole joins; Diode D8 negative pole is connected with diode D2 negative pole; Capacitor C 8 is serially connected between diode D8 positive pole and the diode D9 negative pole, and diode D9 is anodal to be connected with diode D3 positive pole, and diode D9 negative pole and diode D10 positive pole join; Diode D10 negative pole and diode D4 negative pole join; Capacitor C 9 is serially connected between diode D10 positive pole and the diode D11 negative pole, and diode D11 is anodal to join with diode D5 positive pole, and diode D12 is anodal to join with diode D11 negative pole; Diode D12 negative pole is connected with diode D6 negative pole, and diode D6 negative pole and diode D11 negative pole are voltage output end HV.
When the alternating current input is arranged, the preceding half cycle capacitor C 4 of interchange, C5, C6 discharge, capacitor C 1, C2, C3 charging, capacitor C 7, C8, C9 charging; Capacitor C 4, C5, C6 charging during second half, capacitor C 1, C2, C3 charging, capacitor C 7, C8, C9 discharge.Find out that thus high-voltage output end HV is in charged state in the positive-negative half-cycle that exchanges, so the ripple frequency of output voltage is the twice of transformer incoming frequency, thereby makes the ripple of output lower, guaranteed the accuracy of extra-high voltage direct-current generator.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (2)
1. high stability extra-high voltage direct-current high pressure generator; Comprise voltage stabilizing circuit (2) that the electric main that is used for input converts galvanic current rectifying and wave filtering circuit (1) into, is electrically connected with the output of described current rectifying and wave filtering circuit (1), the controlling circuit of voltage regulation (3) that is used to control voltage stabilizing circuit (2) output of being connected with the input of described voltage stabilizing circuit (2), with described voltage stabilizing circuit (2) output be electrically connected be used for the direct current of voltage stabilizing circuit (2) output convert to alternating current bridge type inverse output circuit (4), convert the also high pressure resonant tank (5) of amplification of direct current to the output of described inverter output circuit (4) alternating current that is used for bridge type inverse output circuit (4) output that is electrically connected; It is characterized in that: described high pressure resonant tank (5) comprises a transformer; Described transformer has an elementary winding and two secondary level windings; The elementary winding of described transformer is connected with the output of described bridge type inverse output circuit (4); The different name end of the first secondary grade winding of described transformer is connected and joins with ground with the end of the same name of the second secondary grade winding; Each secondary level winding is connected with multistage voltage-multiplying circuit, and the symmetrical setting of multistage voltage-multiplying circuit on two secondary level windings.
2. high stability extra-high voltage direct-current high pressure generator according to claim 1 is characterized in that: the exponent number of described multistage voltage doubling rectifing circuit is 2～6 rank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102640108A CN102377352A (en) | 2010-08-26 | 2010-08-26 | High-stability extra-high voltage direct current high voltage generator |
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| CN2010102640108A CN102377352A (en) | 2010-08-26 | 2010-08-26 | High-stability extra-high voltage direct current high voltage generator |
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| CN102377352A true CN102377352A (en) | 2012-03-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076173A (en) * | 2012-09-29 | 2014-10-01 | 苏州华电电气股份有限公司 | High frequency power-inputted non-partial discharge ultra-high voltage DC high voltage generation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| CN201290070Y (en) * | 2008-11-07 | 2009-08-12 | 苏州市华电电气技术有限公司 | Extra-high voltage DC generator |
| CN202424546U (en) * | 2010-08-30 | 2012-09-05 | 中国电力科学研究院 | Extra high voltage DC high voltage generator having high stability |
-
2010
- 2010-08-26 CN CN2010102640108A patent/CN102377352A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| CN201290070Y (en) * | 2008-11-07 | 2009-08-12 | 苏州市华电电气技术有限公司 | Extra-high voltage DC generator |
| CN202424546U (en) * | 2010-08-30 | 2012-09-05 | 中国电力科学研究院 | Extra high voltage DC high voltage generator having high stability |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076173A (en) * | 2012-09-29 | 2014-10-01 | 苏州华电电气股份有限公司 | High frequency power-inputted non-partial discharge ultra-high voltage DC high voltage generation device |
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Owner name: CHINESE INST. OF ELECTRIC POWER SCIENCE Effective date: 20120516 |
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Effective date of registration: 20120516 Address after: Good East Industrial Park Wuzhong Economic Development Zone Suzhou city Jiangsu province 215128 Pu Road No. 255 Applicant after: Suzhou Huadian Electric Co., Ltd. Co-applicant after: China Electric Power Research Institute Address before: Good East Industrial Park Wuzhong Economic Development Zone Suzhou city Jiangsu province 215128 Pu Road No. 255 Applicant before: Suzhou Huadian Electric Co., Ltd. |
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Application publication date: 20120314 |