CN203942463U - 1000V adjustable DC power supply - Google Patents
1000V adjustable DC power supply Download PDFInfo
- Publication number
- CN203942463U CN203942463U CN201420317932.4U CN201420317932U CN203942463U CN 203942463 U CN203942463 U CN 203942463U CN 201420317932 U CN201420317932 U CN 201420317932U CN 203942463 U CN203942463 U CN 203942463U
- Authority
- CN
- China
- Prior art keywords
- bridge rectifier
- phase bridge
- voltage
- electric capacity
- adjustable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Ac-Ac Conversion (AREA)
Abstract
The utility model discloses a kind of 1000V adjustable DC power supply, the primary coil of adjustable transformer connects AC power supplies input, one end of secondary coil connects three inputs of three-phase bridge rectifier, the common cathode output that connects three-phase bridge rectifier after the other end series direct current electric capacity of voltage regulation of secondary coil, the common anode output end that connects three-phase bridge rectifier after the other end while series direct current electric capacity of voltage regulation of secondary coil, the two ends of rectifying and wave-filtering electric capacity connect respectively common cathode output and the common anode output end of three-phase bridge rectifier, after switch series connection discharge resistance with DC voltage-stabilizing Capacitance parallel connection.The utility model can not limit output current, easy to connect, can meet the demand of 1000VDC frequency converter test completely.
Description
Technical field
The utility model relates to DC power supply, relates in particular to a kind of 1000V adjustable DC power supply that is applicable to frequency converter.
Background technology
The above DC power supply of the 1000VDC/1A of use, expensive in the market.And while being used in transducer testing system, due to maximum current limit, when instantaneous large-current is exported, can cause output voltage not reach requirement.
Utility model content
The utility model aims to provide a kind of 1000V adjustable DC power supply that can meet 1000VDC frequency converter testing requirement.
The technical solution of the utility model is as follows:
A kind of 1000V adjustable DC power supply, comprise adjustable transformer, the primary coil of adjustable transformer connects AC power supplies input, one end of the secondary coil of adjustable transformer is divided into three inputs that three stocks do not connect three-phase bridge rectifier, the other end of the secondary coil of the adjustable transformer first DC voltage-stabilizing electric capacity of connecting, the common cathode output that connects three-phase bridge rectifier after the second DC voltage-stabilizing electric capacity, the other end of the secondary coil of adjustable transformer the 3rd DC voltage-stabilizing electric capacity of simultaneously connecting, the common anode output end that connects three-phase bridge rectifier after the 4th DC voltage-stabilizing electric capacity, the two ends of rectifying and wave-filtering electric capacity connect respectively common cathode output and the common anode output end of three-phase bridge rectifier, after the first switch series connection discharge resistance with first to fourth DC voltage-stabilizing Capacitance parallel connection, needle dc voltmeter and first to fourth DC voltage-stabilizing Capacitance parallel connection, the common cathode output of three-phase bridge rectifier is connected respectively two DC outputs with common anode output end, second switch is connected between the common cathode output and DC output of three-phase bridge rectifier.
When AC power supplies is input as 380V, the primary and secondary coil ratio of described adjustable transformer is 1:1.
When AC power supplies is input as 220V, the primary and secondary coil ratio of described adjustable transformer is 1:2.
Useful technique effect of the present utility model is:
The utility model utilizes element conventional on market: adjustable transformer, electrochemical capacitor, rectifier etc. have formed a simple and practical 1000V adjustable DC power supply.Its advantage is not for limiting output current and easy to operate, and self manufacture material is simple and easy to connect, the actual demand that all can meet the test of 1000VDC frequency converter that tests.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
In the embodiment in figure 1, T1 is the adjustable transformer of primary and secondary coil ratio 1:1, and D1 is three-phase bridge rectification 50A/1600V, and C5 is rectifying and wave-filtering electric capacity, and C1～C4 is DC voltage-stabilizing electric capacity, and R1 is discharge resistance, and S1, S2 are switch.As shown in Figure 1, the primary coil of adjustable transformer T1 connects 380VAC input, one end Y-connection of secondary coil is divided into three inputs that three stocks do not connect three-phase bridge rectifier D1, the common cathode output that connects three-phase bridge rectifier D1 after other end series direct current electric capacity of voltage regulation C1, the C2 of secondary coil, the other end of secondary coil connects the common anode output end of three-phase bridge rectifier D1 after series direct current electric capacity of voltage regulation C3, C4 simultaneously.Rectifying and wave-filtering capacitor C 5 two ends connect respectively common cathode output and the common anode output end of three-phase bridge rectifier D1, and in parallel with DC voltage-stabilizing capacitor C 1～C4 after switch S 1 discharged in series resistance R 1, needle dc voltmeter is in parallel with DC voltage-stabilizing capacitor C 1～C4.The common cathode output of three-phase bridge rectifier D1 is connected respectively two DC output VDC and 0V with common anode output end, and switch S 2 is connected between the common cathode output and DC output VDC of three-phase bridge rectifier D1.
Circuit theory is as follows:
380VAC input is through adjustable transformer T1, and it is adjustable that output becomes 1～380VAC.
When power supply is positive half wave, the conducting of three-phase bridge rectifier D1 upper arm, forms loop by DC voltage-stabilizing capacitor C 1, C2, DC voltage-stabilizing capacitor C 1, C2 charging.
When power supply is negative half-wave, the conducting of three-phase bridge rectifier D1 underarm, forms loop by DC voltage-stabilizing capacitor C 3, C4, DC voltage-stabilizing capacitor C 3, C4 charging.
The upper voltage of DC voltage-stabilizing capacitor C 1+C2 is up to 380V*1.414=537.32V.
The upper voltage of DC voltage-stabilizing capacitor C 3+C4 is up to 380V*1.414=537.32V.
Output voltage is the voltage on DC voltage-stabilizing capacitor C 1+C2+C3+C4, and ceiling voltage is 537.32*2=1074.64V.
Switch S 2 is output switch, is output while pressing.
Switch S 1 is discharge resistance switch, discharges the energy of DC voltage-stabilizing capacitor C 1～C4 when having tested.Must guarantee to input switch S 1 while not powering could access.
Needle dc voltmeter is observed direct voltage numerical value for convenience.
Note: above embodiment is for 380VAC In-put design.As there is no 380VAC input, available 220VAC input coordinates the adjustable transformer T1 of primary and secondary coil ratio 1:2 to reach effect same.
Above-described is only preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate under the prerequisite that does not depart from spirit of the present utility model and design, within all should thinking and being included in protection range of the present utility model.
Claims (3)
1. a 1000V adjustable DC power supply, it is characterized in that: comprise adjustable transformer (T1), the primary coil of adjustable transformer (T1) connects AC power supplies input, one end of the secondary coil of adjustable transformer (T1) is divided into three inputs that three stocks do not connect three-phase bridge rectifier (D1), the other end of the secondary coil of adjustable transformer (T1) the first DC voltage-stabilizing electric capacity (C1) of connecting, after the second DC voltage-stabilizing electric capacity (C2), connect the common cathode output of three-phase bridge rectifier (D1), the other end of the secondary coil of adjustable transformer (T1) the 3rd DC voltage-stabilizing electric capacity (C3) of simultaneously connecting, after the 4th DC voltage-stabilizing electric capacity (C4), connect the common anode output end of three-phase bridge rectifier (D1), the two ends of rectifying and wave-filtering electric capacity (C5) connect respectively common cathode output and the common anode output end of three-phase bridge rectifier (D1), in parallel with first to fourth DC voltage-stabilizing electric capacity (C1～C4) after the first switch (S1) discharged in series resistance (R1), needle dc voltmeter is in parallel with first to fourth DC voltage-stabilizing electric capacity (C1～C4), the common cathode output of three-phase bridge rectifier (D1) is connected respectively two DC outputs with common anode output end, second switch (S2) is connected between the common cathode output and DC output of three-phase bridge rectifier (D1).
2. 1000V adjustable DC power supply according to claim 1, is characterized in that: when AC power supplies is input as 380V, the primary and secondary coil ratio of described adjustable transformer (T1) is 1:1.
3. 1000V adjustable DC power supply according to claim 1, is characterized in that: when AC power supplies is input as 220V, the primary and secondary coil ratio of described adjustable transformer (T1) is 1:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317932.4U CN203942463U (en) | 2014-06-13 | 2014-06-13 | 1000V adjustable DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317932.4U CN203942463U (en) | 2014-06-13 | 2014-06-13 | 1000V adjustable DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203942463U true CN203942463U (en) | 2014-11-12 |
Family
ID=51861748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420317932.4U Active CN203942463U (en) | 2014-06-13 | 2014-06-13 | 1000V adjustable DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203942463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578146A (en) * | 2017-09-28 | 2019-04-05 | 中国航发商用航空发动机有限责任公司 | Adjustable igniter |
-
2014
- 2014-06-13 CN CN201420317932.4U patent/CN203942463U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578146A (en) * | 2017-09-28 | 2019-04-05 | 中国航发商用航空发动机有限责任公司 | Adjustable igniter |
| CN109578146B (en) * | 2017-09-28 | 2020-03-13 | 中国航发商用航空发动机有限责任公司 | Adjustable ignition device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102843019B (en) | A kind of filter circuit | |
| CN111239577A (en) | High-voltage high-power thyristor leakage current testing system and method thereof | |
| TWI646760B (en) | Electric conversion device | |
| CN202075333U (en) | Surge current tester | |
| CN204515032U (en) | A kind of proving installation of energy feedback unit | |
| CN203942463U (en) | 1000V adjustable DC power supply | |
| CN205374613U (en) | Unbalanced three phase detection circuitry | |
| CN203951452U (en) | A kind of standby automatic switching-off device of electric | |
| CN203734559U (en) | DC power supply device, low voltage industrial frequency converter, and test device of inverter | |
| CN203944975U (en) | For the open-phase protection circuit of inverter type welder | |
| CN203967967U (en) | The bypass circuit of uniform flow type high voltage transducer power unit | |
| CN209513871U (en) | A kind of power circuit of single-phase electric energy meter | |
| Jia et al. | A bulk-capacitance reduction method using self-driven thyristor for AC-DC converters | |
| CN204374270U (en) | Portable electric chamber | |
| CN208984686U (en) | A kind of three-phase multiplication of voltage circuit DC generator | |
| CN102710117A (en) | High-efficiency passive power factor correction circuit | |
| CN202444311U (en) | Power-factor correction circuit in uninterruptible power supply special for electric power | |
| CN205490199U (en) | Resistance -capacitance reduction voltage circuit | |
| CN112865553A (en) | Nonlinear power electronic load and energy feedback method | |
| CN206498338U (en) | Modified Switching Power Supply input circuit | |
| CN206948208U (en) | A kind of adjustable nonlinear load analogue means | |
| CN204649939U (en) | A kind of power supply electronic load | |
| CN205336143U (en) | DF11Z special locomotive rectification power supply | |
| CN210401547U (en) | Relay protection tester | |
| CN103312183A (en) | Power supply for electric reactor performance testing in phase-control rectifying circuit and test method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |