CN205249056U - High pressure weak current steps down and increases a class device - Google Patents
High pressure weak current steps down and increases a class device Download PDFInfo
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- CN205249056U CN205249056U CN201521059074.9U CN201521059074U CN205249056U CN 205249056 U CN205249056 U CN 205249056U CN 201521059074 U CN201521059074 U CN 201521059074U CN 205249056 U CN205249056 U CN 205249056U
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- 230000006837 decompression Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 65
- 229910000859 α-Fe Inorganic materials 0.000 claims description 21
- 230000003044 adaptive effect Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000005070 sampling Methods 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 6
- 230000005669 field effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000784732 Lycaena phlaeas Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model relates to a high pressure weak current steps down and increases a class device, including leading energy buffer unit, the signal input part connection of leading energy buffer unit needs the high voltage of step -down, self -adaptation high frequency and high voltage switch element, the signal output part of leading energy buffer unit is connected to the signal acquisition input of self -adaptation high frequency and high voltage switch element, pulse high -frequency transformer unit, the signal input part of pulse high -frequency transformer unit connects the signal output part of self -adaptation high frequency and high voltage switch element, and the signal output part of pulse high -frequency transformer unit is through being used for increasing the voltage after class device provides the ultimate conversion of meritorious additional electric capacity pond unit output that compensates the firm output of gaining merit for the decompression of high -pressure weak current. The utility model discloses can change the weak current below the 10mA rank, and solve magnetism eddy current loss's problem, guarantee final current switchover's effect. The utility model is suitable for a change the high voltage more than the arbitrary 10kV rank, below the 10mA rank, weak power current power supply.
Description
Technical field
The utility model belongs to power industry potential device field, specifically a kind of high pressure weak current decompression and flow increasing device.
Background technology
At present, the conversion of China high voltage is large driven current density, for the weak current voltage transformation under 10mA rank because the problems such as magnetic eddy-current loss cannot solve step-down problem for a long time. Although some high frequency transformers can reach step-down object but conversion efficiency is too low, generally lower than 50%, cannot reach practical purpose. Simultaneously, the step-down of 10kV voltage has all proposed high requirement to device and winding conducting wire, can trouble free service except only a few high-voltage power semiconductor devices, 10kV has approached its work upper limit, and this type of high-voltage power semiconductor devices is generally for loud-break switch design, power attenuation is larger, is not suitable for small electric stream operating mode, also just cannot complete the transformation work of high pressure weak current.
Utility model content
In order to solve the above problems, the utility model provides a kind of high pressure weak current decompression and flow increasing device, can be converted into the following voltage of 30V to the high-voltage power supply below the above 10mA of 10kV, and can reach with relatively low loss the object of step-down, larger electric current is provided simultaneously.
For achieving the above object, the technical scheme that the utility model adopts is as follows:
A kind of high pressure weak current decompression and flow increasing device, it comprises the preposition energy snubber unit for adapting to high-voltage power supply, the signal input part of described preposition energy snubber unit connects the high voltage that needs step-down;
The adaptive high frequency high-voltage switch gear unit that rushes the information of unit and adopt corresponding strategy according to Information Monitoring for gathering preposition slow energy, the signals collecting input of described adaptive high frequency high-voltage switch gear unit connects the signal output part of preposition energy snubber unit;
For the pulse high frequency transformer unit that carries out transformation processing, the signal input part of described pulse high frequency transformer unit connects the signal output part of adaptive high frequency high-voltage switch gear unit, and the signal output part of pulse high frequency transformer unit is by being used to high pressure weak current decompression flow-increasing device to provide the meritorious capacitance pool unit that supplements of the stable output of meritorious compensation to export the voltage after final conversion.
As to restriction of the present utility model: described preposition energy snubber unit comprises the first capacitor of the high-voltage large-capacity of 10 series connection;
Described adaptive high frequency high-voltage switch gear unit comprises microcontroller, FET array, and sampling module, the signal input part of described sampling module gathers each point voltage of series connection first capacitor of preposition energy snubber unit, the signal output part of sampling module connects the collection signal input of microcontroller, and the control signal output of microcontroller connects the signal input part of pulse high frequency transformer unit by field-effect array.
As to further restriction of the present utility model: described pulse high frequency transformer unit comprises two annular ferrite cores that are frame shape, armature winding, secondary windings, described annular ferrite core is located in transformer base, armature winding is included in the first armature winding working independently respectively under the control of microcontroller, the second armature winding, the 3rd armature winding, described the first armature winding, the second armature winding, the 3rd armature winding connects respectively corresponding FET array, and the first armature winding and the second armature winding are fixedly arranged on respectively the two ends of first annular ferrite core, described secondary windings is fixedly arranged between the first armature winding and the second armature winding, and be positioned at the middle part of first annular ferrite core, described the 3rd armature winding is fixedly arranged on second annular ferrite core, and be not positioned at same plane with first annular ferrite core that is provided with the first armature winding, the second armature winding, secondary windings, but with vertical setting of described first annular ferrite core,
Described meritorious building-out capacitor pool unit comprises powerful second capacitor of several parallel connections, and described all the second capacitors are connected to the two ends of the secondary windings of pulse high frequency transformer unit.
Owing to having adopted above technical scheme, the utility model can reach following technique effect:
(1) the utlity model has preposition energy snubber unit, can cushion weak current power supply, combining adaptive high-frequency and high-voltage switch element, utilize series connection principle and the energy storage principle of capacitor, high-voltage power supply is carried out to capacitance partial pressure and energy storage, the driving pulse high frequency transformer unit that releases energy in the time that adaptive high frequency high-voltage switch gear unit is opened respectively carries out step-down, and solves the problem of withstand voltage of FET array in adaptive high frequency high-voltage switch gear unit simultaneously;
(2) core component of adaptive high frequency high-voltage switch gear of the present utility model unit adopts microprocessor control, can adopt Different Strategies to drive FET array according to actual conditions, adjust in real time and make whole high pressure weak current decompression and flow increasing device keep high conversion efficiency;
(3) parts of pulse high frequency transformer of the present utility model unit, utilize the technological means such as low-resistance corronil winding and large-sized annular FERRITE CORE, reduce high frequency transformer starting current, the flux loss simultaneously magnetic coupling being produced further reduces, and can be operated in the environment that elementary operating current is on the low side, working pulse interval is short and become possibility in conjunction with above 2 the pulse high frequency transformer parts that make this device.
In sum, the utility model can be changed the weak current below 10mA rank, and has solved the problem of magnetic eddy-current loss, has ensured the effect of ultimate current conversion.
That the utility model is applicable to is above to any 10kV rank, the high voltage below 10mA rank, weak current power supply are changed.
Brief description of the drawings
Fig. 1 is the theory diagram of the utility model embodiment;
Fig. 2 is the structural representation of pulse high frequency transformer unit 3 in the utility model embodiment;
Fig. 3 is the circuit theory diagrams of three groups of FETs 22 of the utility model embodiment self adaptation high-voltage switch gear unit 2.
In figure: 1-preposition energy snubber unit, 2-adaptive high frequency high-voltage switch gear unit, 21-microcontroller, 22-FET array, 23-sampling module, 3-pulse high frequency transformer unit, 31-annular ferrite core, 32-armature winding, 33-secondary windings, the 4-meritorious capacitance pool unit that supplements.
Detailed description of the invention
A kind of high pressure weak current of embodiment decompression and flow increasing device
The present embodiment is a kind of high pressure weak current decompression and flow increasing device, and as Fig. 1, it comprises:
(1) preposition energy snubber unit 1, be used for adapting to high-voltage power supply, in the present embodiment, be that other high voltage source of 10kV higher level is changed, in order to make preposition energy snubber unit 1 adapt to other high-voltage power supply of 10kV higher level, in the present embodiment, adopt first capacitor of high-voltage large-capacity (1Kv/1000uF) of 10 series connection as preposition energy snubber unit 1, the signal input part of described preposition energy snubber unit 1 connects the high voltage that needs step-down.
(2) adaptive high frequency high-voltage switch gear unit 2, rush the information of unit 1 and adopt corresponding strategy according to Information Monitoring for gathering preposition slow energy, described adaptive high frequency high-voltage switch gear list, 2 signals collecting input connects the signal output part of preposition energy snubber unit 1. Adaptive high frequency high-voltage switch gear unit 2 in the present embodiment as shown in Figure 1, comprise microcontroller 21, three FET arrays 22, and sampling module 23, the signal input part of described sampling module 23 gathers each point voltage of series connection first capacitor of preposition energy snubber unit 1, the signal output part of sampling module 23 connects the collection signal input of microcontroller 21, and three control signal outputs of microcontroller 21 are respectively by field-effect array 22 out-put supply signals.
And an effect effect pipe array 22 as shown in Figure 3, comprise the circuit being in series by several FETs, and the series circuit of every group of FET is all identical.
(3) pulse high frequency transformer unit 3, if for high pressure current and power supply is carried out to transformation processing, the signal output part of the signal input part connection adaptive high frequency high-voltage switch gear unit 2 of described pulse high frequency transformer unit 3, the signal output part of pulse high frequency transformer unit 3 is by being used to high pressure weak current decompression flow-increasing device that the compensation of the gaining merit voltage that the stable meritorious supplementary capacitance pool unit 4 of exporting is exported after final conversion is provided.
Pulse high frequency transformer unit 3 in the present embodiment as shown in Figure 2, formed by two annular ferrite core 31, armature winding 32, secondary windings 33 that are frame shaped, and the armature winding 32 in the present embodiment is provided with three, the corresponding FET array 22 of each armature winding 32, and due to the control of microcontroller 21 to FET 22, three armature windings 32 are separately to work respectively, can not work together simultaneously. In order to ensure that 33 points of armature winding 32 and secondary windings are arranged, the present embodiment is fixed at secondary windings 33 one of them annular ferrite core 31 centre position as shown in Figure 2, and two armature windings 32 are fixedly arranged on respectively the two ends of described annular ferrite core 31; On another annular ferrite core 31, be installed with the 3rd armature winding 32, and the 3rd position that armature winding 32 arranges and the first two armature winding 32, secondary windings 33 are not positioned at same plane, and with vertical setting of plane at above-mentioned two armature windings 32, secondary windings 33 places.
In addition, in the present embodiment, the no-load voltage ratio of transformer is set to 500:1, can be 1 volt by 500 volts of voltage transformations. Because the pulse high frequency transformer working environment of the present embodiment is more special, its elementary operating current is on the low side, working pulse interval is short, and traditional high frequency transformer cannot be worked. The problem of bringing in order to solve particular job environment, described pulse high frequency transformer unit 3 adopts large-sized annular FERRITE CORE to reduce high frequency magnetic resistance, adapts to its working environment with the common copper enamel-covered wire coiling winding of low-resistance corronil replacement.
And the operation principle of pulse high frequency transformer unit 3 is in the present embodiment: in the time of electric energy that the primary winding coil access of pulse high frequency transformer unit 3 is come through adaptive high frequency high-voltage switch gear unit on by preposition energy snubber unit 1, in magnetic core, just produce alternating flux, alternating flux represents with φ. φ in elementary, secondary windings is identical, and φ is harmonic function, shows the t into φ=φ msin ω. From Faraday's electromagnetic induction law, the induced electromotive force in elementary, secondary windings is e1=-N1d φ/dt, e2=-N2d φ/dt. In formula, N1, N2 are the number of turn elementary, secondary windings. U1=-e1 as shown in Figure 2, U2=e2, its multiple virtual value is U1=-E1=jN1 ω Φ, U2=E2=-jN2 ω Φ, makes k=N1/N2, claims the no-load voltage ratio of transformer. U1/U2=-N1/N2=-k can be obtained fom the above equation, i.e. the ratio of transformer primary, secondary coil voltage effective value, the phasic difference that equals its turn ratio and former and deputy coil voltage is π.
And then draw:
U1/U2=N1/N2
In the negligible situation of no-load current, there is I1/I2=-N2/N1, elementary, secondary windings current effective value size is inversely proportional to its number of turn, and phase difference π.
And then can obtain
I1/I2=N2/N1
Can learn that by above principle secondary windings 32 will export low-voltage electric energy, through the temporary elevator belt loading capability in meritorious building-out capacitor pond, and finally export available low-tension supply.
Meritorious building-out capacitor pool unit 4 in the present embodiment comprises second capacitor of high-power (1uF/1kV) of several parallel connections, and described all the second capacitors are connected to the two ends of the secondary windings of pulse high frequency transformer unit.
Claims (3)
1. a high pressure weak current decompression and flow increasing device,It is characterized in that:It comprises
For adapting to the preposition energy snubber unit of high-voltage power supply, the signal input part of described preposition energy snubber unit connects the high voltage that needs step-down;
The adaptive high frequency high-voltage switch gear unit that rushes the information of unit and adopt corresponding strategy according to Information Monitoring for gathering preposition slow energy, the signals collecting input of described adaptive high frequency high-voltage switch gear unit connects the signal output part of preposition energy snubber unit;
For the pulse high frequency transformer unit that carries out transformation processing, the signal input part of described pulse high frequency transformer unit connects the signal output part of adaptive high frequency high-voltage switch gear unit, and the signal output part of pulse high frequency transformer unit is by being used to high pressure weak current decompression flow-increasing device to provide the meritorious capacitance pool unit that supplements of the stable output of meritorious compensation to export the voltage after final conversion.
2. high pressure weak current decompression and flow increasing device according to claim 1, is characterized in that: described preposition energy snubber unit comprises the first capacitor of the high-voltage large-capacity of 10 series connection;
Described adaptive high frequency high-voltage switch gear unit comprises microcontroller, FET array, and sampling module, the signal input part of described sampling module gathers each point voltage of series connection first capacitor of preposition energy snubber unit, the signal output part of sampling module connects the collection signal input of microcontroller, and the control signal output of microcontroller connects the signal input part of pulse high frequency transformer unit by field-effect array.
3. high pressure weak current decompression and flow increasing device according to claim 2,It is characterized in that: described pulse high frequency transformer unit comprises two annular ferrite cores that are frame shape, armature winding, secondary windings, described annular ferrite core is located in transformer base, armature winding is included in the first armature winding working independently respectively under the control of microcontroller, the second armature winding, the 3rd armature winding, described the first armature winding, the second armature winding, the 3rd armature winding connects respectively corresponding FET array, and the first armature winding and the second armature winding are fixedly arranged on respectively the two ends of first annular ferrite core, described secondary windings is fixedly arranged between the first armature winding and the second armature winding, and be positioned at the middle part of first annular ferrite core, described the 3rd armature winding is fixedly arranged on second annular ferrite core, and be not positioned at same plane with first annular ferrite core that is provided with the first armature winding, the second armature winding, secondary windings, but with vertical setting of described first annular ferrite core,
Described meritorious building-out capacitor pool unit comprises powerful second capacitor of several parallel connections, and described all the second capacitors are connected to the two ends of the secondary windings of pulse high frequency transformer unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059074.9U CN205249056U (en) | 2015-12-18 | 2015-12-18 | High pressure weak current steps down and increases a class device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059074.9U CN205249056U (en) | 2015-12-18 | 2015-12-18 | High pressure weak current steps down and increases a class device |
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| CN205249056U true CN205249056U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521059074.9U Withdrawn - After Issue CN205249056U (en) | 2015-12-18 | 2015-12-18 | High pressure weak current steps down and increases a class device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406726A (en) * | 2015-12-18 | 2016-03-16 | 国网冀北电力有限公司张家口供电公司 | High-voltage weak-current voltage reducing and current increasing apparatus |
| CN110018433A (en) * | 2019-05-21 | 2019-07-16 | 国网山西省电力公司电力科学研究院 | A kind of high-voltage switch property test system performance testing method |
-
2015
- 2015-12-18 CN CN201521059074.9U patent/CN205249056U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406726A (en) * | 2015-12-18 | 2016-03-16 | 国网冀北电力有限公司张家口供电公司 | High-voltage weak-current voltage reducing and current increasing apparatus |
| CN105406726B (en) * | 2015-12-18 | 2018-01-16 | 国网冀北电力有限公司张家口供电公司 | High pressure weak current decompression and flow increasing device |
| CN110018433A (en) * | 2019-05-21 | 2019-07-16 | 国网山西省电力公司电力科学研究院 | A kind of high-voltage switch property test system performance testing method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Jin Inventor after: Ding Bin Inventor after: Xu Da Inventor after: Wang Yong Inventor after: Ge Wei Inventor after: Sun Wei Inventor after: Jiao Minming Inventor after: Kang Tiefeng Inventor after: Li Anqi Inventor before: Ding Bin Inventor before: Xu Da Inventor before: Li Anqi Inventor before: Ge Wei Inventor before: Sun Wei Inventor before: Wang Yong Inventor before: Jiao Minming Inventor before: Kang Tiefeng |
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| COR | Change of bibliographic data | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20180116 |