CN108462396A - The controllable high-voltage DC power supply of 35kV oscillatory wave systems - Google Patents
The controllable high-voltage DC power supply of 35kV oscillatory wave systems Download PDFInfo
- Publication number
- CN108462396A CN108462396A CN201810269675.4A CN201810269675A CN108462396A CN 108462396 A CN108462396 A CN 108462396A CN 201810269675 A CN201810269675 A CN 201810269675A CN 108462396 A CN108462396 A CN 108462396A
- Authority
- CN
- China
- Prior art keywords
- power supply
- voltage
- circuit
- signal
- input
- 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.)
- Granted
Links
- 230000003534 oscillatory effect Effects 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 239000005955 Ferric phosphate Substances 0.000 claims description 4
- 229940032958 ferric phosphate Drugs 0.000 claims description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 4
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000010355 oscillation Effects 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to high-voltage DC power supply technical fields, are specifically related to a kind of controllable high-voltage DC power supply of 35kV oscillatory wave systems, including：High power switching power supply module, high frequency transformer, positive and negative two-way voltage doubling rectifing circuit, voltage and current sample circuit, PWM control modules, isolated drive circuit, adjusts input module, signal acquisition circuit, A/D conversion circuits, wireless receiving module and intelligent control chip at half-bridge inversion circuit.The controllable high-voltage DC power supply of the present invention can be used in 35kV cable oscillation wave test systems, and testing result is good, extremely meet the demand of oscillation wave detection, and have many advantages, such as that good controllability, safe and convenient, small, strong operability, power output are big.
Description
Technical field
The present invention relates to high-voltage DC power supply technical fields, straight more particularly to a kind of controllable high-voltage of 35kV oscillatory wave systems
Galvanic electricity source.
Background technology
Oscillation wave tests system (Oscillating Waveform Test System, abbreviation OWTS), is a kind of emerging
Cable insulation fault detection technique, it is inspired by being similar to the damped oscillation wave voltage of power frequency to subject cable application
The local discharge signal of cable insulation fault location, and it is carried out effectively to detect to judge the quality of cable insulation.
Cable oscillatory wave partial discharge detection system is that recent domestic studies more one kind for crosslinked polyethylene
The power supply of power cable Partial Discharge Testing on Site.Oscillation wave power supply with AC power equivalence is good, action time is short, operation side
Just it, is easy to carry about with one, can effectively detect the various defects in XLPE power cables, and experiment will not damage cable.Its base
This thinking is the series resonance principal using cable equivalent capacitance and inductance coil, makes oscillating voltage in multiple reversal process
Local discharge signal can be inspired at middle electric cable stoppage, which is measured to reach testing goal by high-frequency coupler.It is whole
A test loop is divided into two parts：First, DC power supply circuit；Second is that cable and inductance charge and discharge process, i.e. oscillatory process.
Between the two circuits conversion is realized by rapidly switching off switch.Wherein, high-voltage DC power supply is the energy of oscillation wave detecting system
Measure source and important composition component.
The DC high-voltage power supply of early stage is that electric main or three-phase electricity is high at exchange by the boosting of power frequency high voltage transformer
Piezoelectricity, then rectifying and wave-filtering obtain DC high-voltage, since frequency is low, the volume and weight of power supply is all bigger, transfer efficiency
Also very low, voltage-regulation coefficient is poor.
In addition, traditional high-voltage DC power supply adjusts voltage using auto-transformer or potentiometer, although this method is simple
It is single good to realize, but regulation precision it is inaccurate and it is fragile cause the service life not grown, output ripple is big, and fan-out capability is weak, adjusts
Constant, the defects of input and control model are single is controlled, and it is bulky, it is unfavorable for the integrated of oscillatory wave system and realizes.
With the development of switch power technology grade computer technology and universal, using high frequency switching converter technology and microcontroller
Control technology, the DC high-voltage power supply developed in conjunction with the characteristics of high voltage power supply become mainstream.
Invention content
The present invention provides a kind of controllable high-voltage DC power supply of 35kV oscillatory wave systems, the high-voltage DC power supply Adjustment precision
High, output is stablized.
To achieve the goals above, the present invention adopts the following technical scheme that：The controllable high-voltage direct current of 35kV oscillatory wave systems
Power supply, including：
High power switching power supply module, external 220 alternating current, for alternating current to be converted to direct current；
Half-bridge inversion circuit is electrically connected with high power switching power supply module, and the DC conversion for that will input is exchange
Electricity；
High frequency transformer is electrically connected with half-bridge inversion circuit, for the alternating current of input to boost；
Positive and negative two-way voltage doubling rectifing circuit, is electrically connected with high frequency transformer, for being risen the alternating current of input again
Direct current electricity output is rectified into after pressure；
Voltage and current sample circuit, the current and voltage signals for acquiring positive and negative two-way voltage doubling rectifing circuit output；
PWM control modules are electrically connected with Current Voltage sample circuit and intelligent control chip, for the electric current according to input
Voltage signal and/or control instruction send out half-bridge inversion circuit the duty cycle adjustment signal of Switching Power Supply；
Isolated drive circuit is electrically connected with PWM control modules, converts the Regulate signal received to half-bridge inversion circuit
The signal that can be identified, is adjusted half-bridge inversion circuit；
Input module is adjusted, input control signal is used for；
Signal acquisition circuit is electrically connected with input module is adjusted, and the control signal for that will adjust input module input turns
Turn to analog electrical signal；
A/D conversion circuits, are electrically connected with signal acquisition circuit, and the analog electrical signal for acquiring signal acquisition circuit turns
Turn to digital signal；
Wireless receiving module, for receiving remote control signal；
Intelligent control chip, for according to A/D conversion circuits, wireless receiving module and voltage and current the sampling electricity received
The input signal on road sends out control instruction to PWM control modules.
Further, the DC power supply further includes LED light display module, LED light display module and intelligent control chip
Electrical connection.
Further, the DC power supply further includes stand-by power supply, the stand-by power supply and high power switching power supply module
It is electrically connected again with half-bridge inversion circuit after parallel connection.
Further, the stand-by power supply uses ferric phosphate lithium cell.
Further, the PWM control modules use the chip of SG3525.
Further, the intelligent control chip uses AVR ATmega128 microcontrollers.
Further, the high frequency transformer is designed to two transformers in such a way that level-one is isolated and two level is boosted.
The controllable high-voltage DC power supply of the present invention can be used in 35kV cable oscillation wave test systems, and testing result is good
It is good, extremely meet the demand of oscillation wave detection, and good, safe and convenient, small, strong operability, power with controllability
Export the advantages that big.
Description of the drawings
The system block diagram of Fig. 1 present invention；
Fig. 2 is the internal structure chart of SG3525 chips；
Fig. 3 is the structural schematic diagram of positive and negative two-way voltage doubling rectifing circuit.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, right below in conjunction with drawings and examples
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
The controllable high-voltage DC power supply of the 35kV oscillatory wave systems of the present invention, frame diagram is as shown in Figure 1, include
High power switching power supply module, external 220 alternating current, for alternating current to be converted to direct current；
Half-bridge inversion circuit is electrically connected with high power switching power supply module, and the DC conversion for that will input is exchange
Electricity；
High frequency transformer is electrically connected with half-bridge inversion circuit, for the alternating current of input to boost；
Positive and negative two-way voltage doubling rectifing circuit, is electrically connected with high frequency transformer, for being risen the alternating current of input again
Direct current electricity output is rectified into after pressure；
Voltage and current sample circuit, the current and voltage signals for acquiring positive and negative two-way voltage doubling rectifing circuit output；
PWM control modules are electrically connected with Current Voltage sample circuit and intelligent control chip, for the electric current according to input
Voltage signal and/or control instruction send out half-bridge inversion circuit the duty cycle adjustment signal of Switching Power Supply；
Isolated drive circuit is electrically connected with PWM control modules, converts the Regulate signal received to half-bridge inversion circuit
The signal that can be identified, is adjusted half-bridge inversion circuit；
Input module is adjusted, input control signal is used for；
Signal acquisition circuit is electrically connected with input module is adjusted, and the control signal for that will adjust input module input turns
Turn to analog electrical signal；
A/D conversion circuits, are electrically connected with signal acquisition circuit, and the analog electrical signal for acquiring signal acquisition circuit turns
Turn to digital signal；
Wireless receiving module, for receiving remote control signal.
Intelligent control chip, for according to A/D conversion circuits, wireless receiving module and voltage and current the sampling electricity received
The input signal on road sends out control instruction to PWM control modules.
Wherein, the DC power supply further includes LED light display module, and LED light display module is electrically connected with intelligent control chip
It connects.
Wherein, the DC power supply further includes stand-by power supply, the stand-by power supply and high power switching power supply wired in parallel
It is electrically connected again with half-bridge inversion circuit afterwards.The stand-by power supply uses ferric phosphate lithium cell.
Wherein, the intelligent control chip uses AVR ATmega128 microcontrollers.
The invention mainly comprises low tension source, high-voltage DC power supply main body side, intelligent control chip and peripheral control sides 4
Part forms.Wherein low tension source is served as by stand-by power supply or AC220 with high power switching power supply；High-voltage DC power supply main body
Side includes half-bridge inversion circuit, high frequency transformer, positive and negative two-way voltage doubling rectifing circuit, voltage and current sample circuit, PWM control moulds
Block, isolated drive circuit composition；Intelligent control chip reads sampled data with control information and output order to control voltage
It increases or reduces or protected；The data that peripheral control side is obtained by A/D conversion circuits and wireless receiving module.
Wherein, half-bridge inversion circuit：
Isolated form circuit refers to input and outlet side by a transformer isolation, it can be achieved that multiple-channel output, there are commonly normal shocks
Formula, inverse-excitation type, push-pull type, half-bridge and full-bridge.Normal shock type circuit is simpler, at low cost, and reliability is high, but transformer is unidirectionally encouraged
Magnetic, utilization rate is low, is suitable for various middle low power Switching Power Supplies.Flyback circuit is very simple, and cost is very low, and reliability is high,
Driving circuit is simple, but is difficult to reach larger power, is suitable for small-power occasion.Transformer is two-way in bridge-type circuit encourages
Magnetic is easy to reach relatively high power, but circuit structure is complicated, and of high cost, reliability is low, needs complicated multigroup isolation drive electricity
There is straight-through and magnetic bias problem on road, is suitable for high-power industrial switch power supply, the source of welding current, electrolysis power etc.；Semi-bridge type power supply becomes
Depressor is in bidirectional excitation state, and no magnetic bias problem, switch is less, at low cost, but there is the problem of leading directly to, and reliability is low, needs
Complicated isolated drive circuit is suitable for various industrial switch power supplys, computer Switching Power Supply etc.；Push-pull type power transformer
Bidirectional excitation, only there are one switch, on-state loss is smaller in transformer primary current circuit, and driving is simple, but there are problems that magnetic bias,
It is its fatal defects, is suitable for the Switching Power Supply of low input.
Mesohigh direct current main power source rated output voltage 65kV of the present invention, output-current rating 4mA, output power can reach
260W belongs to middle low power power supply, so having selected semi-bridge inversion formula circuit as main circuit topological structure.
Wherein, PWM control modules：
The duty ratio of regulating switch power supply can make output voltage substantially not with load variation or not as input voltage becomes
Change and changes.This method is substantially that transistor turns pulsewidth is adjusted and is controlled, therefore is pulse width modulation method (Pulse
Width Modulation, are abbreviated as PWM).This control methods circuit composition has had many corresponding IC pieces, in of the invention
The chip of the SG3525 of the pulse-width modulation type of use, cheap, batch production cost is very low, and stability is good, multiple functional,
It can be suitably used for higher FREQUENCY CONTROL.The internal structure chart of SG3525 chips is as shown in Figure 2.
Wherein, isolated drive circuit：
Driving circuit is the interface between power electronics main circuit and control circuit, is the important ring of power electronic equipment
Section, has a great impact to the performance of whole device.Using driving circuit of good performance, power electronic devices can be made to be operated in
Comparatively ideal on off state shortens switch time, reduces switching loss, all to the operational efficiency, reliability and safety of device
Have very important significance.It is exactly " positive negative pulse stuffing " input all the way that the present invention, which uses the full isolated form driving circuit of both-end, design philosophy,
Transformer, transformer output two-way phase differ 180 ° of pulse to drive the power MOSFET up and down of half-bridge circuit, to keep away
The serious conditions that upper and lower power MOSFET is simultaneously turned on are exempted from.Transformer isolation has wiring simple, it is easy to accomplish, it is at low cost,
Have the characteristics that quick, high performance.
Wherein, high frequency transformer：
The high frequency of high voltage power supply can be such that supply unit minimizes, and the dynamic response speed of system is accelerated, supply unit
Efficiency improves, and can effectively inhibit pollution from environmental noise.But the obstruction of high voltage power supply high frequency development is mainly reflected in high frequency
On high-tension transformer, main problem is：First, high frequency transformer volume reduces, but Insulation Problems protrude；Second is that voltage output
It is high then the change of transformer is relatively high, and large velocity ratio necessarily makes the non-linear serious of transformer, makes its leakage inductance and distribution capacity significantly
Increase.
In order to solve Insulation Problems, in the design high voltage direct current main power source the design of transformer be isolated using level-one and two level
The mode of boosting is designed to two transformers.First order transformer only plays isolating transformer, and the first order becomes in design
The primary and secondary coil of depressor is all made of triple insulated wire coiling, and the number of primary turns of the number of turns and second level transformer
It is the same, is further ensured that the safety of circuit.Inverter is separated with voltage doubling rectifing circuit, isolating transformer, boosting transformation
Device is invaded together with voltage-multiplying circuit to improve compressive resistance in transformer oil, and low pressure and high-pressure section are separated, in this way installation and
It is not only safe but also reliable when use.
To reduce the leakage inductance of winding, the measure taken has：First, the suitable core structure of selection and shape；Second is that winding is set
Tall and thin type is counted into, winding height is increased, reduces winding thickness；Third, winding using twisted copper wires or wide thin copper foil, make copper account for because
Son increases；Fourth, intersecting winding method using layering, winding misfortune is set to close close.
Wherein, positive and negative two-way voltage multiplying rectifier：
Present invention employs a kind of schemes of positive and negative two-way voltage multiplying rectifier, i.e., are followed by positive and negative two parallel connections in high-tension transformer
Voltage-multiplying circuit.As shown in figure 3, the mode of the positive and negative two-way voltage multiplying rectifier of composition, and positive and negative both ends one end is made to be grounded, the other end is defeated
Go out high pressure, circuit entire in this way is equivalent to two ten voltage doubling rectifing circuits series connection.The purpose done so is primarily to reduce again
The internal pressure drops of voltage rectifier improve the stability and efficiency of DC power supply, enhance load capacity, can significantly subtract
The ripple factor of small power supply output.
Wherein, voltage and current sample circuit
During the work time, when the variation of the condition of input and output, power supply should have the function of self-control to power supply.This is just
It is required that the control circuit of power supply has the function of stablizing output.Control circuit should be able to be detected the output voltage of circuit, so
Detected value is obtained into error amount compared with the reference value of setting afterwards, carries out going to control after centainly calculating and handling using the error
Main circuit is output valve constantly close to setting value, to achieve the purpose that voltage stabilizing exports.
For example, cause output voltage reduction to be fed back in SG3525 when supply voltage reduction or load resistance become smaller
1 foot of error amplifier reversed-phase output voltage will reduce, output voltage error amplifier will increase, to make to be added to pulsewidth
It modulates comparator anti-phase input terminal voltage to increase, the turn-on time of output transistor becomes larger, therefore power MOS pipe turn-on time also becomes
Long, duty ratio becomes larger, to enable output voltage to return to original stationary value.The experiment proved that with simple, quick, reliable
The advantages of.
Similarly, overcurrent protection is designed to protect load and power supply itself, and the function of the protection is will to detect
Current value compared with over-current adjusting point, when output current reaches over-current adjusting point, the protection circuit operation, block triggering
Pulse makes power supply be stopped, and power supply, which will rework, to be restarted.
Wherein, wireless receiving module
Output in order to remote wireless control high voltage direct current source and the relevant action of control, in the design of the present invention
In, the control signal emitted from upper pusher side is received by wireless receiving module.Remote control can ensure personal equipment peace
Entirely, the portability of oscillatory wave system at the scene is improved.
Wherein, stand-by power supply
Ferric phosphate lithium cell is the stand-by power supply of mesohigh DC power supply of the present invention, which has following features：
(1) high-energy density, theoretical specific capacity 170mAh/g, product actual specific capacity can be more than 140mAh/g；
(2) safety is current safest anode material for lithium-ion batteries, is free of any harmful heavy metal
Element；
(3) long lifespan, can be with charge and discharge 2000 times or more.
(4) charging performance is excellent, the lithium battery of lithium iron phosphate positive material, can be charged using big multiplying power, most soon can be small 1
When interior battery is full of.
The stand-by power supply is advantageously implemented in case of emergency (AC-less power is for seasonable), and it is offline to carry out cable oscillation wave
Test job.
The high-voltage DC power supply of the present invention is in 35kV cable oscillation wave test systems, testing result to be good, extremely accords with
The demand of co oscillation wave detection, and can accomplish that good controllability, safe and convenient, small, strong operability, power output are big
Deng.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
- The controllable high-voltage DC power supply of 1.35kV oscillatory wave systems, which is characterized in that includingHigh power switching power supply module, external 220 alternating current, for alternating current to be converted to direct current；Half-bridge inversion circuit is electrically connected with high power switching power supply module, and the DC conversion for that will input is alternating current；High frequency transformer is electrically connected with half-bridge inversion circuit, for the alternating current of input to boost；Positive and negative two-way voltage doubling rectifing circuit, is electrically connected with high frequency transformer, and the alternating current for that will input carries out after boosting again It is rectified into direct current electricity output；Voltage and current sample circuit, the current and voltage signals for acquiring positive and negative two-way voltage doubling rectifing circuit output；PWM control modules are electrically connected with Current Voltage sample circuit and intelligent control chip, for the Current Voltage according to input Signal and control instruction send out half-bridge inversion circuit the duty cycle adjustment signal of Switching Power Supply；Isolated drive circuit is electrically connected with PWM control modules, and converting the Regulate signal received to half-bridge inversion circuit can The signal of identification, is adjusted half-bridge inversion circuit；Input module is adjusted, input control signal is used for；Signal acquisition circuit is electrically connected with input module is adjusted, for converting the control signal for adjusting input module input to Analog electrical signal；A/D conversion circuits, are electrically connected with signal acquisition circuit, and the analog electrical signal for acquiring signal acquisition circuit is converted into Digital signal；Wireless receiving module, for receiving remote control signal；Intelligent control chip, for according to A/D conversion circuits, wireless receiving module and the voltage and current sample circuit received Input signal sends out control instruction to PWM control modules.
- 2. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 1, it is characterised in that：The direct current Power supply further includes LED light display module, and LED light display module is electrically connected with intelligent control chip.
- 3. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 1, it is characterised in that：The direct current Power supply further includes stand-by power supply, is electrically connected again with half-bridge inversion circuit after the stand-by power supply and high power switching power supply wired in parallel It connects.
- 4. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 3, it is characterised in that：It is described spare Power supply uses ferric phosphate lithium cell.
- 5. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 1, it is characterised in that：The PWM Control module uses the chip of SG3525.
- 6. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 1, it is characterised in that：The intelligence It controls chip and uses AVR ATmega128 microcontrollers.
- 7. the controllable high-voltage DC power supply of 35kV oscillatory wave systems according to claim 1, it is characterised in that：The high frequency Transformer is designed to two transformers in such a way that level-one is isolated and two level is boosted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269675.4A CN108462396B (en) | 2018-03-29 | 2018-03-29 | Controllable high-voltage direct-current power supply of 35kV oscillatory wave system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269675.4A CN108462396B (en) | 2018-03-29 | 2018-03-29 | Controllable high-voltage direct-current power supply of 35kV oscillatory wave system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108462396A true CN108462396A (en) | 2018-08-28 |
| CN108462396B CN108462396B (en) | 2024-02-23 |
Family
ID=63238191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810269675.4A Active CN108462396B (en) | 2018-03-29 | 2018-03-29 | Controllable high-voltage direct-current power supply of 35kV oscillatory wave system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108462396B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707950A (en) * | 2019-11-11 | 2020-01-17 | 广东工业大学 | Dual-mode control high-voltage electrostatic spinning power supply and generation method |
| CN110932557A (en) * | 2019-11-29 | 2020-03-27 | 山东科技大学 | High-gain quasi-resonant DC-DC converter based on voltage doubling rectifying circuit |
| CN111175570A (en) * | 2020-03-13 | 2020-05-19 | 中国工程物理研究院激光聚变研究中心 | Pulse discharge current recording device with trigger enabling function and fault identification method |
| CN111913033A (en) * | 2020-09-21 | 2020-11-10 | 深圳市英泰康科技有限公司 | Current and voltage sampling display system of high-power high-voltage power supply |
| CN113030661A (en) * | 2021-03-08 | 2021-06-25 | 深圳供电局有限公司 | Cable buffer layer defect detection equipment and method |
| CN113726172A (en) * | 2021-07-20 | 2021-11-30 | 北京航天时代激光导航技术有限责任公司 | Aging high-voltage power supply |
| CN116455225A (en) * | 2023-01-09 | 2023-07-18 | 珠海市奥德维科技有限公司 | High-voltage power supply and adjusting method thereof |
| CN117294124A (en) * | 2023-05-16 | 2023-12-26 | 国家电投集团科学技术研究院有限公司 | DC-DC converter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954313A (en) * | 2010-09-08 | 2011-01-26 | 上海理工大学 | High-frequency high-voltage switching power supply for electric precipitation |
| CN101958655A (en) * | 2010-09-25 | 2011-01-26 | 刘闯 | Series resonance high voltage power supply utilizing high frequency multilevel inverter |
| CN102594189A (en) * | 2012-03-05 | 2012-07-18 | 南京理工大学 | Non-isolated direct-current converter type differential three-level inverter |
| CN103199714A (en) * | 2013-04-17 | 2013-07-10 | 普瑞麦迪（北京）实验室技术有限公司 | Power source device of electrophoresis system |
| WO2016146000A1 (en) * | 2015-03-18 | 2016-09-22 | 深圳市保益新能电气有限公司 | High-frequency isolation alternating current-direct current conversion circuit and control method thereof |
| WO2017167225A1 (en) * | 2016-04-01 | 2017-10-05 | 杨军 | Movable three-dimensional wireless charging device for multiple phones |
| CN208257661U (en) * | 2018-03-29 | 2018-12-18 | 青岛华电高压电气有限公司 | The controllable high-voltage DC power supply of 35kV oscillatory wave system |
-
2018
- 2018-03-29 CN CN201810269675.4A patent/CN108462396B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954313A (en) * | 2010-09-08 | 2011-01-26 | 上海理工大学 | High-frequency high-voltage switching power supply for electric precipitation |
| CN101958655A (en) * | 2010-09-25 | 2011-01-26 | 刘闯 | Series resonance high voltage power supply utilizing high frequency multilevel inverter |
| CN102594189A (en) * | 2012-03-05 | 2012-07-18 | 南京理工大学 | Non-isolated direct-current converter type differential three-level inverter |
| CN103199714A (en) * | 2013-04-17 | 2013-07-10 | 普瑞麦迪（北京）实验室技术有限公司 | Power source device of electrophoresis system |
| WO2016146000A1 (en) * | 2015-03-18 | 2016-09-22 | 深圳市保益新能电气有限公司 | High-frequency isolation alternating current-direct current conversion circuit and control method thereof |
| WO2017167225A1 (en) * | 2016-04-01 | 2017-10-05 | 杨军 | Movable three-dimensional wireless charging device for multiple phones |
| CN208257661U (en) * | 2018-03-29 | 2018-12-18 | 青岛华电高压电气有限公司 | The controllable high-voltage DC power supply of 35kV oscillatory wave system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707950A (en) * | 2019-11-11 | 2020-01-17 | 广东工业大学 | Dual-mode control high-voltage electrostatic spinning power supply and generation method |
| CN110932557A (en) * | 2019-11-29 | 2020-03-27 | 山东科技大学 | High-gain quasi-resonant DC-DC converter based on voltage doubling rectifying circuit |
| CN111175570A (en) * | 2020-03-13 | 2020-05-19 | 中国工程物理研究院激光聚变研究中心 | Pulse discharge current recording device with trigger enabling function and fault identification method |
| CN111175570B (en) * | 2020-03-13 | 2022-03-08 | 中国工程物理研究院激光聚变研究中心 | Pulse discharge current recording device with trigger enabling function and fault identification method |
| CN111913033A (en) * | 2020-09-21 | 2020-11-10 | 深圳市英泰康科技有限公司 | Current and voltage sampling display system of high-power high-voltage power supply |
| CN113030661A (en) * | 2021-03-08 | 2021-06-25 | 深圳供电局有限公司 | Cable buffer layer defect detection equipment and method |
| CN113030661B (en) * | 2021-03-08 | 2024-01-19 | 深圳供电局有限公司 | Cable buffer layer defect detection device and method |
| CN113726172A (en) * | 2021-07-20 | 2021-11-30 | 北京航天时代激光导航技术有限责任公司 | Aging high-voltage power supply |
| CN116455225A (en) * | 2023-01-09 | 2023-07-18 | 珠海市奥德维科技有限公司 | High-voltage power supply and adjusting method thereof |
| CN116455225B (en) * | 2023-01-09 | 2024-07-12 | 珠海市奥德维科技有限公司 | High-voltage power supply and adjusting method thereof |
| CN117294124A (en) * | 2023-05-16 | 2023-12-26 | 国家电投集团科学技术研究院有限公司 | DC-DC converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108462396B (en) | 2024-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108462396A (en) | The controllable high-voltage DC power supply of 35kV oscillatory wave systems | |
| CN109130903B (en) | Low-voltage high-power wireless charging system with bilateral LCCL-T topology | |
| CN201185355Y (en) | High voltage line induction electricity-taking apparatus | |
| CN109342910B (en) | Full-electric partial discharge detection device and detection method | |
| CN104158400A (en) | Modularized high-pressure power supply circuit | |
| CN105119388A (en) | Current transformer energy-obtaining power supply working in wide current range | |
| CN105322665A (en) | Resonant wireless power supply system for high-voltage power transmission line | |
| CN109768716A (en) | A kind of control method of electric power electric transformer | |
| CN200994071Y (en) | Battery charger | |
| CN208257661U (en) | The controllable high-voltage DC power supply of 35kV oscillatory wave system | |
| CN117477803B (en) | Inversion resonance constant-power wireless charging system and control method | |
| CN204967289U (en) | Electric current mutual inductance of wide current range work is got can power | |
| CN106410981A (en) | Busbar electricity getting circuit of high-voltage side of current transformer | |
| CN203691365U (en) | Self-powered circuit of power semiconductor switch driving circuit | |
| CN115313587A (en) | High-power supply with multiple power supply inputs | |
| CN203554043U (en) | Smart ship charger | |
| CN112485727B (en) | Device and method for testing burst short circuit of transformer by utilizing series resonance compensation method | |
| CN201540354U (en) | DC circuit breaker characteristic parameter automatic testing system | |
| CN103997226A (en) | Power source for electricity utilizing information collecting terminal | |
| CN107749665A (en) | A kind of locking power supply uninterrupted power supply device and its application process | |
| CN103618530A (en) | Self-powered circuit and self-powering method of drive circuit of power semiconductor switch | |
| CN204290507U (en) | A kind of electricity getting device of ultra-high-tension power transmission line | |
| CN113394888A (en) | Online energy-taking power supply device based on power transmission line | |
| CN111579920A (en) | Fault detection device and method | |
| CN110824345A (en) | Portable 10kV isolating switch alternating current withstand voltage test device based on wireless control technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |