CN105634280A - Efficient electric field-induced power take device - Google Patents
Efficient electric field-induced power take device Download PDFInfo
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- CN105634280A CN105634280A CN201610010747.4A CN201610010747A CN105634280A CN 105634280 A CN105634280 A CN 105634280A CN 201610010747 A CN201610010747 A CN 201610010747A CN 105634280 A CN105634280 A CN 105634280A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/16—Conversion of dc power input into dc power output without intermediate conversion into ac by dynamic converters
- H02M3/18—Conversion of dc power input into dc power output without intermediate conversion into ac by dynamic converters using capacitors or batteries which are alternately charged and discharged, e.g. charged in parallel and discharged in series
Abstract
The invention provides an efficient electric field-induced power take device, which is applied to power supply of high-voltage AC equipment. High-voltage low-current electric energy obtained by an existing electric field-induced power take technology is stored through a capacitor in an energy storage circuit; after the capacitor is fully charged, a switching power supply is switched on through an electronic switch controlled by a relaxation oscillation circuit; the electric energy is released to the switching power supply within a short time period; the switching power supply converts the electric energy into low-voltage electric energy within the time period; a voltage stabilizing circuit carries out voltage stabilization on the electric energy output by the switching power supply; the switching power supply is cut off by the electronic switch after the capacitor is fully discharged; the switching power supply is powered off and stops working; the capacitor also enters the charging process; and the switching power supply works in an intermittent manner through the method, so that working under the condition of [mu]A-level average input current can be achieved; and after the switching power supply working in the intermittent manner is added, the electric field-induced power take device can greatly output more electric energy.
Description
One. technical field
The present invention relates to the electric power system of high-voltage alternating equipment.
Two. background technology
Existing high-voltage alternating equipment is except directly using high-voltage ac power, it is necessary to that powers separately mostly is mains-supplied, and self-powered, sensing power taking 3 class mode is powered; The main equipment that mains-supplied is used for power consumption is big is powered, it is necessary to arrange transmission line of electricity, has inconvenience in using more; Self-powered generally by chemistry primary cell power supply, or chemistry secondary cell adds solaode or wind-power electricity generation combination, primary cell power supply needs periodic replacement battery, leakage and the danger at high temperature exploded once is had with secondary cell, the material that battery drain goes out has electric conductivity, can cause the danger of high-voltage electric power system short circuit; Electric energy is directly absorbed in sensing power taking from ultra-high-tension power transmission line, it is specifically divided into electric current sensing power taking and electric field induction power taking 2 kinds, electric current sensing power taking utilizes current transformer principle, picked-up electric energy from the magnetic field that transmission line of electricity produces, electric current in ultra-high-tension power transmission line is unstable, and the electric energy that electric current hour obtains is also little, even takes less than electricity, having the problem that magnetic core is overheated when electric current is big, the electric energy that electric current sensing power taking obtains is very unstable.
Electric field induction power taking utilizes tablet (in Fig. 1 1) to the earth, the greatly segregated capacitive to the aerial decentralized capacitance coupling of three-phase high-voltage transmission line of electricity and tablet itself, the high-pressure side (in Fig. 1 2) being connected with road one of in three-phase high-voltage transmission line of electricity forms voltage difference, in this, as original power, this power supply is characterized as being open-circuit voltage height, equal to phase voltage, short circuit current is relevant with high-pressure side voltage-to-ground height with tablet profile, it is a minimum numerical value, generally at several �� A or tens of �� A order of magnitude; Original power carries out rectification through rectification circuit (in Fig. 1 3), and afterwards through times current circuit, namely the circuit at rectification circuit (in Fig. 1 3) rear portion, carries out decompression and flow increasing, and circuit theory is as follows:
The storage capacitor (in Fig. 1 14��17) that the DC current that rectification circuit (in Fig. 1 3) exports is connected with it through charging diode (in Fig. 1 11��13), the capacity of storage capacitor (in Fig. 1 14��17) every is equal, storage capacitor is carried out serial connection charge, when rear class capacitance energy storage electric capacity (in Fig. 1 17) voltage exceedes bidirectional trigger diode (in Fig. 1 19) break over voltage, controllable silicon (in Fig. 1 20) is triggered, form heavy-current discharge, original power output current capacity is extremely low, voltage is pulled low, storage capacitor (in Fig. 1 14��17) by discharge diode (in Fig. 1 5��10) with parallel way through controllable silicon (in Fig. 1 20), final stage energy storage filter capacitor (in Fig. 1 22) is discharged by current-limiting resistance (in Fig. 1 21), when discharge current is reduced to controllable silicon (in Fig. 1 20) maintenance electric current, controllable silicon ends, circuit recharge process, by aforementioned times of current circuit operation principle it can be seen that again current circuit have how many single-unit accumulator (in Fig. 1 4), just should have the decompression and flow increasing ability of how many multiplying powers mutually, wherein head and the tail single-unit accumulator in number of diodes reduce to some extent.
Load is made to obtain peak power, load must be mated with source impedance, load impedance is made to be equal to source impedance, the power output end of electric field induction power taking is tablet (in Fig. 1 1) and high-pressure side (in Fig. 1 2), source impedance is that tablet (in Fig. 1 1) is to the earth, the earth aerial decentralized capacitance to three-phase line ultra-high-tension power transmission line, for pure capacitive reactances, load impedance is times current circuit that is attached thereto of rectification circuit (in Fig. 1 3) and late-class circuit, its C-V characteristic can be considered as pure resistance, it it is a nonlinear resistance, times current circuit plays impedance transformer effect, when the capacitive impedance of power supply is equal with the resistive impedance of load, the voltage of load 2 end is affected by the capacitive impedance phase shift of power supply, 45 �� of phase place leading current phase place, corresponding voltage value is power supply U �� sin45 ��, for common 10kV line voltage power lines, high-pressure side (in Fig. 1 2) voltage is phase voltage 5.8kV by tablet (in Fig. 1 1), when reaching desired impedance coupling, voltage=5.8kV �� the sin45=4.1kV of load 2 end.
With the load circuit that current circuit outfan is connected again, Typical operating voltages is 5V or 3.3V, times current circuit outfan output voltage is lower than bidirectional trigger diode (in Fig. 1 19) break over voltage, about 20V, common load circuit also needs to, by mu balanced circuit, the voltage that current circuit outfan again is higher is realized blood pressure lowering, when being 4 times (such as Fig. 1) for the ability of flowing again of current circuit again, the output voltage of tablet (in Fig. 1 1) and high-pressure side (in Fig. 1 2) is 20V �� 4=80V, also do not include the electric power that mu balanced circuit causes, 80V from desired impedance mate time voltage 4.1kV deviate greatly, this causes that electric field induction way to take power power taking is extremely inefficient, output electric energy is minimum, increase single-unit accumulator (in Fig. 1 4) joint number in times current circuit and can improve a times stream ability, stream ability is directly proportional to single-unit accumulator (in Fig. 1 4) joint number again, the method can dramatically increase circuit volume, electric field induction electricity getting device is being contained on high-tension line, volume crosses conference harm becoming attached to property of high pressure equipment, when being especially arranged on device interior, increase the method for single-unit accumulator (in Fig. 1 4) joint number raising times stream ability in times current circuit extremely limited.
When tablet (in Fig. 1 1) shape of electric field induction way to take power is fixing with position, the energy value obtained is only relevant with high-pressure side (in Fig. 1 2) voltage-to-ground, the line voltage association in direct ratio of this voltage and transmission line of electricity, the line voltage of transmission line of electricity is extremely stable, and the electric energy that therefore electric field induction way to take power obtains is extremely stable.
Three. summary of the invention
High-tension electric energy is converted to the electric energy of low-voltage, Switching Power Supply has the advantage that efficiency is high and circuit volume is little, but Switching Power Supply cannot be used in electric field induction electricity getting device, it is big that reason is in that switch power supply no-load consumes electric current, AD-DC type switch power supply no-load consumes the minimum 150 �� A of electric current, DC-DC type switch power supply no-load consumes the minimum 20 �� A of electric current, even if can use reluctantly, it is low that switch power supply no-load consumption electric current also results in circuit energy conversion efficiency.
The present invention retains the technical scheme in existing electric field induction power taking, and newly increase new technical scheme, a times current circuit can not be used when power taking efficiency requirements is not high, ultimate principle is that the high voltage-small current electric energy that existing electric field induction power taking technology is obtained is stored by electric capacity, by electrical switch turn on-switch power supply after electric capacity is fully charged, in short time, electric energy is released to Switching Power Supply, Switching Power Supply at this moment between section high voltage electric energy is converted to low-voltage electric energy, electric capacity is discharged rear electrical switch and disconnects Switching Power Supply, Switching Power Supply power-off quits work, electric capacity enters again charging process, allow Switching Power Supply with intermittent work mode by aforementioned manner, reach to work when the �� A level currents that original power provides.
Circuit principle structure of the present invention (such as Fig. 2) is, rectification circuit (in Fig. 2 3) is connected with flowing accumulator (in Fig. 2 4) again, flow accumulator (in Fig. 2 4) again to be connected with step-down switching power supply (in Fig. 2 7) input by the electrical switch (in Fig. 2 5) connected, electrical switch (in Fig. 2 5) is connected with relaxation oscillating circuit (in Fig. 2 6), electrical switch (in Fig. 2 5) is sent Guan Bi and the disconnection control signal of circulation by relaxation oscillating circuit (in Fig. 2 6), step-down switching power supply (in Fig. 2 7) outfan is connected with mu balanced circuit (in Fig. 2 8) input, mu balanced circuit (in Fig. 2 8) outfan is final electric energy output end, mu balanced circuit (in Fig. 2 8) can not also use, and step-down switching power supply (in Fig. 2 7) outfan is final circuit output end.
Circuit specific works principle is as follows with connected mode:
1. the storage capacitor device in times stream accumulator (in Fig. 2 4) is usually polarity free capacitor, the electrochemical capacitor meeting circuit Low dark curient requirement can also use, flowing accumulator (in Fig. 2 4) simplest form again is, do not use a times current circuit, single storage capacitor 2 pole is connected in parallel on rectification circuit (in Fig. 2 3) outfan 2 pole, and the electrical switch (in Fig. 2 5) again through series connection is connected with step-down switching power supply (in Fig. 2 7) input, flowing the another kind of form of accumulator (in Fig. 2 4) again is, many storage capacitors (in Fig. 1 14��17) are used to be connected according to the mode in background technology times of current circuit (such as Fig. 1) with rectification diode (in Fig. 1 11��13 and 5��10), times current circuit is formed with electrical switch (in Fig. 2 5), storage capacitor (in Fig. 1 14��17) charge path is series system charging, discharge path is parallel way electric discharge, equivalent electric capacity during electric discharge is all storage capacitor capacity sums, when using many storage capacitors, its quantity differs and is decided to be in Fig. 14 (in Fig. 1 14��17).
2. the element serving as electrical switch (in Fig. 2 5) function is generally audion, metal-oxide-semiconductor, controllable silicon, but is not limited to these 3 kinds, electrical switch (in Fig. 2 5) is controlled by relaxation oscillating circuit (in Fig. 2 6), and the circuit that periodic connecting and disconnecting are flowed between accumulator (in Fig. 2 4) with step-down switching power supply (in Fig. 2 7) input again is connected, if electrical switch (in Fig. 2 5) type of device is this type of automatic control of controllable silicon turns off type element, for controllable silicon, silicon controlled turns off needs the electric current that control pole is flow through in relaxation oscillating circuit (in Fig. 2 6) output to be significantly smaller than silicon controlled trigger current, maintains 2 conditions of electric current with the electric current that can flow through the positive best negative pole of silicon controlled less than controllable silicon, this type of automatic control of controllable silicon turns off sorts of electronic switch (in Fig. 2 5) and generally falls into switch off current type, namely the electric current flow through is reduced to and to a certain degree turns off voluntarily, need in Switching Power Supply input parallel connection storage capacitor (in Fig. 5 3), with series limiting resistor in working current loop (in Fig. 5 2), prevent this type of automatic control of controllable silicon from turning off sorts of electronic switch (in Fig. 2 5) abnormal shutdown, prevent discharge current excessive between storage capacitor (in Fig. 5 3) and the storage capacitor of front stage circuits from burning this type of automatic control of controllable silicon and turn off sorts of electronic switch (in Fig. 2 5), Switching Power Supply input parallel connection storage capacitor (in Fig. 5 3) its capability value is generally between the 10%��40% of the storage capacitor equivalent capacitance value flowing accumulator (in Fig. 2 4) again.
3. can use bidirectional trigger diode series limiting resistor with differential concatenation Zener diode more in parallel with flowing 2 electrodes of storage capacitor in accumulator (in Fig. 2 4) again composition relaxation oscillating circuit, pulse high current signal or this pulse high current during bidirectional trigger diode conducting cause the high voltage signal on current-limiting resistance as the closure state control signal of electrical switch (in Fig. 2 5), and bidirectional trigger diode low-voltage on the low current or current-limiting resistance of state is as the off-state control signal of electrical switch (in Fig. 2 5), relaxation oscillating circuit (in Fig. 2 6) be not limited to aforementioned bidirectional trigger diode series limiting resistor and differential concatenation Zener diode again with storage capacitor parallel type, recommending the storage capacitor flowed again in accumulator (in Fig. 2 4) is oscillating capacitance, with circuit and composition relaxation oscillating circuit (in Fig. 2 6) with Schmitt trigger behavior, the circuit input end with Schmitt trigger behavior is connected with aforementioned oscillating capacitance, outfan controls end with electrical switch (in Fig. 2 5) and is connected, electrical switch (in Fig. 2 5) is wholly-controled device, it is designed to oscillating capacitance voltage-storage capacitor fully charged, when namely voltage is higher than certain value, electrical switch (in Fig. 2 5) is sent Closed control signal by relaxation oscillating circuit (in Fig. 2 6), until oscillating capacitance voltage-storage capacitor owes electricity, when namely voltage is lower than certain value, electrical switch (in Fig. 2 5) is sent off-state and controls control signal by relaxation oscillating circuit (in Fig. 2 6), relaxation oscillating circuit (in Fig. 2 6) can also be the circuit that exception is independent, but lose the direct supervisory function bit of storage capacitor voltage flowing accumulator (in Fig. 2 4) again, can not with storage capacitor voltage levels for according to judging whether the electric energy that storage capacitor stores fills with and deficient electricity, easily cause electrical switch (in Fig. 2 5) too early or to cross slow Guan Bi and disconnect, cause that step-down switching power supply (in Fig. 2 7) operating voltage range of rear class and working time be not at optimum state, affects circuit stability and reliability.
4. the adjusting and voltage-reduction switch power supply (in Fig. 2 7) that the present invention uses, for the AC-DC transformers connected in parallel formula Switching Power Supply of civil power 110V, the design of 220V and 380V power current in prior art, original design continuous output is between 1-20W, and the DC-DC tandem Switching Power Supply that input voltage is more than 80V, can serve as the adjusting and voltage-reduction switch power supply (in Fig. 2 7) in the present invention after transformation to use, transformation way is as follows:
.AC-DC transformers connected in parallel formula Switching Power Supply and DC-DC tandem Switching Power Supply generally remove input energy storage filter capacitor, because flowing accumulator (in Fig. 2 4) again already provided with storage capacitor, also have filter action concurrently.
. in Switching Power Supply, voltage sampling circuit is connected with switched power output, power consumption on average exports more than 15% Switching Power Supply, generally it is carried out low-power consumption transformation, transformation way 1 is, connect between adjusting and voltage-reduction switch power supply (in Fig. 2 7) outfan filter capacitor (in Fig. 3 3) with voltage sampling circuit (in Fig. 3 1) isolating diode (in Fig. 3 2), isolating diode type of device is generally high-frequency rectification diode, isolating diode (in Fig. 3 2) effect is in that when Switching Power Supply power-off quits work, prevent the electric energy adverse current that filter capacitor (in Fig. 3 3) stores to front voltage sample circuit (in Fig. 3 1), transformation way 1 is all applicable for AC-DC transformers connected in parallel formula Switching Power Supply and DC-DC tandem Switching Power Supply.
Voltage sampling circuit low-power consumption for AC-DC transformers connected in parallel formula Switching Power Supply is transformed, there is a kind of transformation way 2, switched power output and voltage sampling circuit (in Fig. 4 1) use identical coil windings, but use different rectifications and filter circuit to realize circuit isolation, voltage sampling circuit (in Fig. 4 1) has independent high-frequency rectification diode (in Fig. 4 3) and independent filter capacitor (in Fig. 4 5), when Switching Power Supply power-off quits work, high-frequency rectification diode (in Fig. 4 2) prevents electric energy adverse current that switched power output filter capacitor (in Fig. 4 5) stores to voltage sampling circuit (in Fig. 4 1) and transformer coli winding, the capacity of voltage sampling circuit independence filter capacitor (in Fig. 4 5) should be typically smaller than switched power output filter capacitor (in Fig. 4 4) 15%, high-frequency rectification diode (in Fig. 4 3) type of device is high-frequency rectification diode or switching diode.
Voltage sampling circuit low-power consumption for AC-DC transformers connected in parallel formula Switching Power Supply is transformed, there is a kind of transformation way 3, voltage sampling circuit uses different coil windings from switched power output, circuit isolation is realized by different coil windings, when preventing Switching Power Supply power-off from quitting work, the electric energy stream that outfan filter capacitor stores is to voltage sampling circuit.
Adjusting and voltage-reduction switch power supply (in Fig. 2 7) of the present invention is with intermittent work mode, Switching Power Supply each working time can not be too low, closing-disconnect more than 20 cycles usually above Switching Power Supply power switch pipe, otherwise adjusting and voltage-reduction switch power supply (in Fig. 2 7) can not steady operation, adjusting and voltage-reduction switch power supply (in Fig. 2 7) is the working time every time, by its input current value and the storage capacitor value flowing accumulator (in Fig. 2 4) again, and electrical switch (in Fig. 2 5) Closed control signal time length is determined by relaxation oscillating circuit (in Fig. 2 6), when storage capacitor capacitance is sufficiently large, power switch pipe at adjusting and voltage-reduction switch power supply (in Fig. 2 7) closes-disconnects 20 all after dates, the voltage of storage capacitor also ensures that adjusting and voltage-reduction switch power supply (in Fig. 2 7) normal operation, electrical switch (in Fig. 2 5) is sent Closed control signal time and is longer than the power switch pipe of adjusting and voltage-reduction switch power supply (in Fig. 2 7) and closes-disconnect 20 cycle times by relaxation oscillating circuit (in Fig. 2 6), can ensure that adjusting and voltage-reduction switch power supply (in Fig. 2 7) working time every time closes more than 20 cycles higher than switch power supply power tube switch.
The adjusting and voltage-reduction switch power supply (in Fig. 2 7) increased in the present invention is if duration of work input voltage virtual value is too low, can not reach promote electric field induction electricity getting device power taking efficiency and reduce circuit volume purpose, duration of work input voltage virtual value is higher than 80V, the present invention just has implementary value, it is desirable to higher than 140V, Guan Bi electrical switch (in Fig. 2 5) sent by arranging relaxation oscillating circuit (in Fig. 2 6) goes adjustment to flow storage capacitor firing voltage value and end discharge voltage value in accumulator (in Fig. 2 4) again with disconnecting the control signal time, adjusting and voltage-reduction switch power supply (in Fig. 2 7) duration of work input voltage virtual value can be realized higher than 80V or 140V, only adjust and flow the magnitude of voltage that storage capacitor in accumulator (in Fig. 2 4) starts to discharge again, can also reach to make adjusting and voltage-reduction switch power supply (in Fig. 2 7) duration of work input voltage virtual value higher than 80V or 140V purpose, for using, bidirectional trigger diode series limiting resistor is in parallel with flowing 2 electrodes of storage capacitor in accumulator (in Fig. 2 4) again again with differential concatenation Zener diode constitutes relaxation oscillating circuit (in Fig. 2 6), by selecting Zener diode or many Zener diodes of differential concatenation of different breakdown reverse voltage value, and select the bidirectional trigger diode of different break over voltage and different resistance current-limiting resistances, realize the magnitude of voltage that storage capacitor is started electric discharge and the magnitude of voltage adjustment terminating electric discharge, reach adjusting and voltage-reduction switch power supply (in Fig. 2 7) duration of work input voltage virtual value higher than 80V or 140V, it is this type of automatic shutoff type element of controllable silicon for electrical switch (in Fig. 2 5) type of device, adjusting and voltage-reduction switch power supply (in Fig. 2 7) input voltage minima then cannot be set, the Closed control signal interval length that electrical switch (in Fig. 2 5) can be sent by input voltage maximum by arranging relaxation oscillating circuit (in Fig. 2 6) is gone to control to flow storage capacitor in accumulator (in Fig. 2 4) again and is decontroled the magnitude of voltage of electric discharge of beginning, adjusting and voltage-reduction switch power supply (in Fig. 2 7) input voltage maximum is adjusted with this, and adjust the storage capacitor flowing accumulator (in Fig. 2 4) again with storage capacitor (in Fig. 5 3) capacity ratio to adjust adjusting and voltage-reduction switch power supply (in Fig. 2 7) input voltage maximum.
5. mu balanced circuit (in Fig. 2 8) input is connected with step-down switching power supply (in Fig. 2 7) outfan, mu balanced circuit (in Fig. 2 8) input is final outfan, and the electric energy that the physical circuit type of mu balanced circuit (in Fig. 2 8) is DC-DC switching power circuit or linear voltage-stabilizing circuit completes Switching Power Supply (in Fig. 2 7) is exported carries out voltage stabilizing output; If load adapts to the variation of step-down switching power supply (in Fig. 2 7) output end voltage, then mu balanced circuit (in Fig. 2 8) avoids the need for existence, and step-down switching power supply (in Fig. 2 7) outfan is final outfan.
In Switching Power Supply, AC-DC transformers connected in parallel formula Switching Power Supply is generally of the ability voltage of more than 300V being converted to 5V low pressure with the efficiency of more than 80%, double outward times current circuit blood pressure lowering that stream accumulator (in Fig. 2 4) uses the form of many storage capacitors to be formed with electrical switch (in Fig. 2 5), efficient electric field induction electricity getting device provided by the invention can allow the high-pressure side (in Fig. 2 2) magnitude of voltage with tablet (in Fig. 2 1) more than 1500V, this magnitude of voltage depends on the pressure voltage of power switch pipe in electrical switch (in Fig. 2 5) or step-down switching power supply (in Fig. 2 7), this pressure voltage is much larger than the high-pressure side (in Fig. 1 2) when only using times current circuit in prior art and tablet (in Fig. 1 1) 80V voltage, analyzed with source impedance matching principle from electric field induction power taking load in background technology, higher step-down ratio can bring better impedance matching effect, as aforementioned, the electric energy of efficient electric field induction electricity getting device provided by the invention picked-up, hinge structure has 1��2 order of magnitude to promote, circuit volume is also greatly reduced.
Four. accompanying drawing explanation
Fig. 1 is existing electric field induction way to take power circuit theory diagrams, and 1 is tablet, and 2 is high-pressure side, 3 is rectification circuit, 4 is single-unit accumulator in times current circuit, and 5��10 is discharge diode, and 11��13 is charging diode, 14��17 is storage capacitor, 18 is current-limiting resistance, and 19 is bidirectional trigger diode, and 20 is controllable silicon, 21 is current-limiting resistance, and 22 is final stage energy storage filter capacitor.
Fig. 2 is efficient electric field induction electricity getting device circuit block diagram, 1 is tablet, 2 is high-pressure side, 3 is rectification circuit, 4 for flow accumulator again, and 5 is the electrical switch being connected between accumulator and step-down switching power circuit, and 6 is relaxation oscillating circuit, 7 is step-down switching power supply, and 8 is mu balanced circuit.
Fig. 3 is the step-down switching power output end voltage sampling circuit 1,1 improved is voltage sampling circuit, and 2 is isolating diode, and 3 is filter capacitor.
Fig. 4 is the step-down switching power output end voltage sampling circuit 2,1 improved is voltage sampling circuit, and 2 is high-frequency rectification diode, and 3 is high-frequency rectification diode, and 4 is switched power output filter capacitor, and 5 is voltage sampling circuit independence filter capacitor.
Fig. 5 is that efficient electric field induction electricity getting device uses controllable silicon as the partial circuit functional-block diagram of electrical switch, and 1 is controllable silicon, and 2 is current-limiting resistance, and 3 is storage capacitor, and 4 is step-down switching power supply, and 5 is mu balanced circuit.
Five. detailed description of the invention
Use special low-power consumption Schmidt trigger integrated circuit, with flowing in accumulator (in Fig. 2 4) storage capacitor again as oscillating capacitance, add peripheral cell and constitute relaxation oscillating circuit (in Fig. 2 6), the forward threshold voltage utilizing Schmidt trigger goes to distinguish and flows the fully charged state of storage capacitor in accumulator (in Fig. 2 4) again, negative sense threshold voltage goes to distinguish that flowing storage capacitor in accumulator (in Fig. 2 4) again owes electricity condition, outfan controls electrical switch (in Fig. 2 5) Guan Bi and off-state, electrical switch (in Fig. 2 5) is wholly-controled device, this type of automatic control of controllable silicon turns off sorts of electronic switch and can not use, the forward threshold voltage of Schmidt trigger and negative sense threshold voltage can be by bleeder circuit adjustment, circuit can adjust storage capacitor discharge ionization voltage flexibly and terminate discharge voltage, the electrical switch (in Fig. 2 5) that such Schmidt trigger controls can close on time time fully charged by storage capacitor in flowing accumulator (in Fig. 2 4) again, disconnect on time when owing electricity, the adjusting and voltage-reduction switch power supply (in Fig. 2 7) allowing rear class is operated in optimum voltage scope, be conducive to improving electricity getting device work efficiency and stability, bidirectional trigger diode add current-limiting resistance and Zener diode again with flow storage capacitor in accumulator (in Fig. 2 4) again and constitute relaxation oscillating circuit (in Fig. 2 6), because the break over voltage value of bidirectional trigger diode can not adjust comparatively single with device parameters with conducting voltage, which results in storage capacitor discharge ionization voltage and the difference terminated between discharge voltage can not scalability, adjusting and voltage-reduction switch power supply (in Fig. 2 7) duty of rear class is produced harmful effect.
The occasion that electricity getting device efficiency requirements is not high, it is possible to do not use a times current circuit, flows single storage capacitor 2 pole in accumulator (in Fig. 2 4) again and is connected in parallel on rectification circuit (in Fig. 2 3) outfan 2 pole, to reduce circuit volume; The occasion that electricity getting device efficiency requirements is high, flowing accumulator (in Fig. 2 4) again uses times current circuit that the form of many storage capacitors and electrical switch (in Fig. 2 5) are formed that the high voltage of rectification circuit (in Fig. 2 3) outfan is carried out pre-blood pressure lowering, adjusting and voltage-reduction switch power supply (in Fig. 2 7) running voltage is high as far as possible, improves the magnitude of voltage of pressure side (in Fig. 2 2) and tablet (in Fig. 2 1) with this.
The adjusting and voltage-reduction switch power supply (in Fig. 2 7) that the present invention uses, generally the voltage drop of more than 300V is low to moderate 5V, recommend transformers connected in parallel formula Switching Power Supply, if using tandem Switching Power Supply, because step-down ratio is big, power switch pipe opens dutycycle can be extremely low, it is unfavorable for that switch power efficiency improves and volume miniaturization, transformator in transformers connected in parallel formula Switching Power Supply has voltage transformation effect, so that power switch pipe has and higher opens dutycycle, switch power efficiency can be beneficial to and improves and volume miniaturization.
Electric field induction power taking power supply provided by the invention, can be used for high-voltage charge display device, the power supply of wireless temperature-measuring sensor, and the power supply of transmission line online monitoring system sensor.
Claims (4)
1. efficient electric field induction electricity getting device, power supply for high-voltage alternating equipment, comprise tablet, high-pressure side, rectification circuit, it is characterised in that: rectification circuit output end is connected with a times stream accumulator, and times stream accumulator is connected with step-down switching power input by the electrical switch connected, electrical switch is connected with relaxation oscillating circuit, and step-down switching power output end is final circuit output end; During step-down switching power work, input voltage virtual value is higher than 80V.
2. step-down switching power supply in efficiently electric field induction electricity getting device as claimed in claim 1, it is characterised in that: step-down switching power output end is connected to mu balanced circuit, and circuit output end of pressure-stabilizing is final outfan.
3. step-down switching power supply in efficiently electric field induction electricity getting device as claimed in claim 1, it is characterized in that: when in Switching Power Supply, voltage sampling circuit is connected with switched power output, isolating diode of connecting between adjusting and voltage-reduction switch power output end filter capacitor and voltage sampling circuit.
4. step-down switching power supply in efficiently electric field induction electricity getting device as claimed in claim 1, it is characterized in that: step-down switching power supply type is AC-DC transformers connected in parallel formula Switching Power Supply, the coil windings that switched power output is identical with voltage sampling circuit use, but using different rectifications and filter circuit to realize circuit isolation, voltage sampling circuit has independent high-frequency rectification diode and independent filter capacitor.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786813A (en) * | 2016-10-16 | 2017-05-31 | 杜金昌 | High efficiency electric field induction electricity getting device |
| CN108322201A (en) * | 2017-03-30 | 2018-07-24 | 成都芯源系统有限公司 | Electronic circuit, integrated alternating current switch circuit and control method of electronic circuit |
| CN109038865A (en) * | 2018-08-16 | 2018-12-18 | 四川瑞霆电力科技有限公司 | Temperature measuring equipment and its electricity-fetching module, switching power circuit applied to cable accessory |
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| CN114006376A (en) * | 2021-11-04 | 2022-02-01 | 广东电网有限责任公司 | Voltage replenisher |
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