CN1047176A - Capacitance voltage-regulating DC power supply - Google Patents
Capacitance voltage-regulating DC power supply Download PDFInfo
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- CN1047176A CN1047176A CN 90102363 CN90102363A CN1047176A CN 1047176 A CN1047176 A CN 1047176A CN 90102363 CN90102363 CN 90102363 CN 90102363 A CN90102363 A CN 90102363A CN 1047176 A CN1047176 A CN 1047176A
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- China
- Prior art keywords
- power supply
- load
- electronic switch
- voltage
- current
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- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention belongs to the field of power equipment, and relates to a capacitance voltage-regulating type direct current power supply. After the commercial alternating current is rectified, two groups of capacitors are alternately charged in series through an electronic switch, and then alternately discharged in parallel to a load through the electronic switch, so that the purposes of reducing voltage, increasing current and isolating and insulating primary and secondary are achieved. Can replace the traditional DC power supply of a transformer step-down rectification mode. The transformer has the advantages that copper and silicon steel sheets can be saved, no-load loss exists, the load loss is lower than that of a traditional transformer rectification direct-current power supply, and the power factor of the system can be improved by taking the idle work as the capacity. It is especially suitable for large current DC power supply equipment such as portable arc welding machine and spot welding machine.
Description
The invention belongs to field of electrical equipment, is a kind of capacitive voltage regulating dc power supply.
Traditional DC power supply all is the mode of rectification again after the transformer step-down.This power supply all needs heavy a transformer and a powerful rectifier cell.When operation, efficient is low, power factor is low.The efficient of for example traditional arc welder is generally 20～30%, and power factor has only 0.4.
In order to solve the above-mentioned shortcoming of traditional DC power supply, the present invention has designed a kind of capacitive voltage regulating dc power supply.It is made up of rectifier, electronic switch and capacitor, it is characterized in that (see figure 1): it be by civil power behind rectifier, use electronic switch DK
1, DK
2, realize serial connection charge to capacitor group C1, C2, use electronic switch DK
1-1, DK
1-2, and DK
2-1, DK
2-2Realize capacitor group C1, C2 parallel discharge, on load R, can obtain a low-voltage, big electric current to load R.Simultaneously, can utilize charge switch DK
1With DK
2With discharge switch DK
1-1, DK
2-2With DK
2-1, DK
2-2Alternation, realize on the load R continuous current and with the isolation of power supply U.The available number that increases, subtracts the parallel discharge capacitor realizes the coarse adjustment of output voltage and electric current.Simultaneously, the negate feedback signal can be realized voltage stabilizing, current limliting or current stabilization, pressure limiting easily to electronic switch in load.
The course of work of circuit diagram as shown in Figure 1 is: after city's AC power rectification, through electronic switch DK
1At t
1, t
3, t
5T
2n-1To capacitor group C1 serial connection charge, on capacitor group C1, set up voltage U 1, the oscillogram U1(t of its voltage in time) shown in Fig. 2 a.At t
2, t
4, t
6T
2nIn time, electronic switch DK
2To capacitor group C2 serial connection charge, make C2 obtain voltage U 2, the oscillogram U2(t of its voltage) see Fig. 2 b.Simultaneously, discharge electronic switch DK
1-1And DK
1-2Open-minded, make capacitor group C1 parallel connection to load R discharge, on load R, obtain U3, and U3(t) waveform shown in Fig. 2 c.And at t
2n+1In time, electronic switch DK
2-1And DK
2-2Open-minded, make capacitor group C2 parallel connection to load discharge.The voltage waveform that obtains on load R is U4(t) (seeing Fig. 2 d).U3(t then) and U4(t) be superimposed as U5(t) be exactly the continuous DC power supply voltage that is added on the load R.Then load maximum voltage value equals the number m of serial connection charge voltage U 1 divided by the parallel discharge capacitor, i.e. U
5M=-, load lowest high-current value equals the load maximum voltage and is removed by load R, i.e. I
RM=-as seen because the alternation of electronic switch, when making the C1 charging, the C2 discharge, and during the C2 charging C1 discharge make on the load R power supply forever and charge power supply isolated, realizing once the isolated insulation between (charge circuit) and the secondary (discharge loop).Can be as required to the electronic switch alternation, design one cover control program.
The present invention compares with the DC power supply of traditional transformer step-down rectifier mode, and its advantage at first is to have saved main transformer, can save a large amount of copper materials and silicon steel material.The second idle power number that can improve system for capacitive greatly of getting.The 3rd, energy-conservation, no no-load loss, loss is also far below traditional transformer during load.
Therefore, the present invention can be widely used in the D.C. high-current field, can make high-current dc power supply equipment lightness, as portable electric fox welding machine, spot welding machine etc.
Symbol figure explanation
Fig. 1: capacitive voltage regulating dc power supply main electrical scheme schematic diagram:
The D-rectifier
DK
1, DK
2-charging electronic switch
C1, C2-capacitor group
DK
1-1, DK
1-2, DK
2-1, DK
2-2-discharge electronic switch
The R-load
U1-is to the C1 charging voltage
U2-is to the C2 charging voltage
U3-C1 is to load R discharge voltage
U4-C2 is to load R discharge voltage
Voltage in the U5-load
Fig. 2. the charge and discharge voltage oscillogram:
A-is through DK
1To C1 charging voltage oscillogram, U1(t)
B-is through DK
2To C2 charging voltage oscillogram, U2(t)
C-is through DK
1-1, DK
1-2To the voltage oscillogram of load R discharge, U3(t)
D-is through DK
2-1, DK
2-2To the voltage oscillogram of load R discharge, U4(t)
E-is added in the voltage oscillogram on the load R, U5(t)
Claims (4)
1, a kind of capacitive voltage regulating dc power supply, it is made up of rectifier, electronic switch and electric capacity, it is characterized in that (see figure 1): it be by civil power after rectification, use electronic switch DK
1, DK
2Realization is used electronic switch DK to the serial connection charge of capacitor group C1, C2
1-1, DK
1-2And DK
2-1, DK
2-2Realize capacitor group C1, C2 parallel discharge, on load R, can obtain a low-voltage, big electric current to load R.
2, capacitive voltage regulating dc power supply as claimed in claim 1, it is made up of rectifier, electronic switch and capacitor, with serial connection charge, the parallel discharge of electronic switch realization to the capacitor group, in load, obtain a low-voltage, big electric current, it is characterized in that: it uses charge switch DK
1With DK
2With discharge switch DK
1-1, DK
1-2With DK
2-1, DK
2-2Alternation, realize on the load R continuous current and with the isolation of power supply U.(see figure 2)
3, as claim 1,2 described capacitive voltage regulating dc power supplies, it is characterized in that: the available number that increases, subtracts the parallel discharge capacitor realizes the coarse adjustment of output voltage and electric current.
4, as claim 1,2 described capacitive voltage regulating dc power supplies, it is characterized in that: the negate feedback signal can be realized voltage stabilizing, current limliting or current stabilization, pressure limiting easily to electronic switch in load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102363 CN1047176A (en) | 1990-05-04 | 1990-05-04 | Capacitance voltage-regulating DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102363 CN1047176A (en) | 1990-05-04 | 1990-05-04 | Capacitance voltage-regulating DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1047176A true CN1047176A (en) | 1990-11-21 |
Family
ID=4877486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90102363 Pending CN1047176A (en) | 1990-05-04 | 1990-05-04 | Capacitance voltage-regulating DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047176A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228682B (en) * | 2005-06-30 | 2012-05-02 | 西门子公司 | Powering unit with full bridge and wide adjusting range circuit |
| CN101635505B (en) * | 2008-07-25 | 2012-08-15 | 台达电子工业股份有限公司 | Method for controlling structure of a plurality of input-series and output-parallel converters |
-
1990
- 1990-05-04 CN CN 90102363 patent/CN1047176A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228682B (en) * | 2005-06-30 | 2012-05-02 | 西门子公司 | Powering unit with full bridge and wide adjusting range circuit |
| CN101635505B (en) * | 2008-07-25 | 2012-08-15 | 台达电子工业股份有限公司 | Method for controlling structure of a plurality of input-series and output-parallel converters |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |