CN104901360B - A kind of control method of ultracapacitor cascade high voltage device - Google Patents
A kind of control method of ultracapacitor cascade high voltage device Download PDFInfo
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- CN104901360B CN104901360B CN201510247271.1A CN201510247271A CN104901360B CN 104901360 B CN104901360 B CN 104901360B CN 201510247271 A CN201510247271 A CN 201510247271A CN 104901360 B CN104901360 B CN 104901360B
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Abstract
A kind of control method of ultracapacitor cascade high voltage device, it is characterized in that, the principle that described control method is the half of highest goal voltage needed for high-voltage capacitor according to the ceiling voltage of the ultracapacitor group cascade system output in ultracapacitor cascade high voltage device, determines ultracapacitor monomer number needed for ultracapacitor group in ultracapacitor group cascade system；In single charge task, select the half that ultracapacitor group output voltage is equal to this charging tasks target voltage by controlling, reach 2 times of supply voltage of principle using the voltage that resonance principle makes capacitor in half harmonic period, the high-voltage capacitor of timesharing ordered pair packet charges.
Description
Technical field
The present invention relates to a kind of control method of ultracapacitor cascade high voltage power supply.
Background technology
Spark source is device geological condition explored by high-voltage capacitor electric discharge, its middle-and high-voltage capacitor
The voltage range that voltage is related to be 1KV and more than, need high voltage power supply that it is charged.The method of original adoption is by 220V
Or 380V line voltage forms high voltage power supply after Industrial Frequency Transformer boosting, rectification and charges to high-voltage capacitor, developed into later
Using high frequency switching converter technology it is therefore an objective to reduce the volume of Industrial Frequency Transformer.The primary energy of charge power supply is usually electrical network
Electric energy, diesel-driven generator, but in mountain area, both the above primary energy is all restricted.With the development of supercapacitor technologies,
It is possibly realized by the mode that ultracapacitor provides Initial energy source, and ultracapacitor can be divided into the mould of small size and weight
Block, carries on the back, by manpower, the area that vehicle is difficult to reach, and so that the application in mountain area for the spark source is possibly realized.
Ultracapacitor group has two ways as the charging system of Initial energy source, and one is that ultracapacitor group is filled with high frequency
Power supply forms charging system, and ultracapacitor group provides low-voltage, high-current, is transformed into high voltage-small current through high frequency charging electric power
Charge to capacitor afterwards；One kind is to be together in series using cascaded topology by ultracapacitor group, directly exports high pressure to capacitor
Charge.Adopt in the charging system of cascaded topology series connection in ultracapacitor group, the ultracapacitor group of every one-level is also by many
Individual ultracapacitor is monomer series-connected to be formed, general ultracapacitor monomer voltage in 2.7V, when condenser voltage is higher,
The monomer series-connected output of thousand of ultracapacitors of needs, higher to the coherence request of ultracapacitor monomer.Due to super electricity
The diversity of container monomer certainly exists, and during more monomer series-connected use, system failure rate is high, poor practicability, and impact makes
With.
Chinese patent 201010185126.2 discloses a kind of control system of cascaded inverter, it is important that master control system
Implementation, be not directed to the control method of cascade circuit control sequential.Chinese patent 201210259287.0 discloses one kind
Linear amplifier high-voltage cascade device and method, it is important that cascaded circuit topology, is not directed to specifically control control method.
Content of the invention
The purpose of the present invention is the shortcoming overcoming prior art, proposes a kind of control of ultracapacitor cascade high voltage device
Method.The present invention so that the ultracapacitor monomer connected in ultracapacitor group cascaded charge power supply significantly reduces,
Improve the dependable with function of charging device.The present invention is applied to target charging voltage in 1KV and above high-voltage capacitor
Charge.
The ultracapacitor cascade high voltage device that the present invention is based on includes 5 ingredients：Ultracapacitor group cascades
System, control system, current-limiting inductance, high-voltage capacitor, and load control switch.Ultracapacitor group cascade system high pressure is defeated
After the high-pressure side series connection current-limiting inductance going out, connect the current input stage of load control switch, the electric current output of load control switch
The high-pressure stage of level connection high-voltage capacitor, the low pressure pole of high-voltage capacitor connects ultracapacitor cascade system low-voltage output.
Ultracapacitor group cascade system is in series by multiple ultracapacitor groups, and one control of series connection of each ultracapacitor group is opened
A diode in parallel, the one-level in composition ultracapacitor cascade system again behind pass, form super capacitor after plural serial stage
Device group cascade system.Ultracapacitor group cascade system is realized exporting controlled high voltage power supply function under control system control.
High-voltage capacitor and load control switch are M, and M is the positive integer more than or equal to 1.M group high-voltage capacitor and M
M value in individual load control switch is identical, and the value of M is by high-voltage capacitor capacity and ultracapacitor cascade system output cathode
The inductance value of current-limiting inductance of end series connection, charging required time, and the maximum charging current of ultracapacitor group cascade system
Determine.After the high-pressure side series connection current-limiting inductance of ultracapacitor group cascade system High voltage output, connect M load control switch
Current input stage, the circuit output stage of M load control switch connects M high-voltage capacitor high-pressure stage, M high-voltage capacitance respectively
The low pressure pole of device connects ultracapacitor cascade system low-voltage output respectively.
As follows to the control method of ultracapacitor cascade high voltage device：
The total voltage of described ultracapacitor group cascade system output is the half of target voltage needed for high-voltage capacitor,
After high-voltage capacitor target charging voltage determines, control system is equal to target according to ultracapacitor group output voltage sum and charges
The principle of voltage half, the quantity of the ultracapacitor group that selection is devoted oneself to work, then M load control of control system control is opened
One of pass load control switch closure, and control ultracapacitor groups controls at different levels in ultracapacitor group cascade system to open
Pass is closed at, that is, control ultracapacitor group cascade system output voltage simultaneously, to certain in the M group high-voltage capacitor of packet
One group of charging.The voltage making this group high-voltage capacitor being connected with this load control switch using resonance principle is half resonance week
2 times of ultracapacitor group cascade system output voltage are reached during the phase.Half harmonic period moment, this load control switch breaks
Open, terminate this group high-voltage capacitor being connected with this load control switch is charged, then control system controls another load
Controlling switch closes, and controls ultracapacitor group cascade system output voltage, to this group being connected with this load control switch
High-voltage capacitor charges ..., and such timesharing sequence packet is charged to high-voltage capacitor.This control method can effectively reduce super
The quantity of level capacitor bank monomer ultracapacitor.
The classification of ultracapacitor group cascade system can according to circumstances determine, classification is more, required controlling switch and two poles
Guan Yue is many, and on high-voltage capacitor, voltage is differential less, and classification is fewer, and ultracapacitor group cascade system is simpler, but high-tension electricity
The voltage of container is differential bigger.In order to meet the charging requirement of high-voltage capacitor different target voltage, every grade of ultracapacitor group
Voltage can be different, by ultracapacitor group combination exportable different grade voltage.Every group of high-voltage capacitor
Charging intervalUltracapacitor group maximum output current ability need to be more than or equal toWherein U is not
With the ultracapacitor group voltage sums at different levels devoted oneself to work when combining, L is to connect with ultracapacitor cascade system high-pressure side
The inductance value of current-limiting inductance, C be high-voltage capacitor capacity.According to formulaWhen high-voltage capacitor capacity increases, required
The output current of ultracapacitor group cascade system becomes big, ultracapacitor group output current Capability Requirement is uprised, now, is
Reduce the requirement of ultracapacitor group output current, high-voltage capacitor can be divided into M group, the controlling party being charged using load sequential
Formula.During charge initiation, control system exports the closure signal of some in M load control switch, exports super capacitor simultaneously
In device group cascade system, the closure signal of ultracapacitor group controlling switches at different levels, makes controlling switch in ultracapacitor groups at different levels
It is closed at, ultracapacitor group output voltage simultaneously, to one group of charging in M group high-voltage capacitor.When charging current is changed into 0
When, control system exports the cut-off signal of this load control switch, so that this load control switch is disconnected, ultracapacitor groups at different levels
Middle controlling switch simultaneously switches off, and ultracapacitor group stops output voltage.This load control switch is waited to return to cut-off state
Afterwards, the closure signal of the load control switch that control system output is connected with next group high-voltage capacitor, exports super electricity simultaneously
The closure signal of ultracapacitor group controlling switches at different levels in container group cascade system, makes to control in ultracapacitor groups at different levels and opens
Pass is closed at, ultracapacitor group output voltage simultaneously, and next group high-voltage capacitor is charged.
When the output current of ultracapacitor is more than the maximum output current ability of ultracapacitor group, using during load
The control mode that sequence charges.
The positive effect of the present invention is：
1. control method of the present invention can be greatly lowered the series connection of ultracapacitor monomer in cascade ultracapacitor group
Number, improves the reliability of system.
2. the controlling switch of ultracapacitor group cascade system of the present invention and load control switch are operated in Sofe Switch state,
Effectively reduce switch ends due to voltage spikes and electromagnetic interference.
3. the present invention to high-voltage capacitor using packet sequential charge by the way of, in required ultracapacitor group cascade system
The charging occasion of the larger Large Copacity high-voltage capacitor of output current, can effectively reduce the inductance value of current-limiting inductance and to super
The requirement of the current capacity of capacitor bank output.
4. the method adopt ultracapacitor group cascade composition DC source it is achieved that vast capacity, long service life,
Ultrafast DC source accumulation of energy, the feature of suitable cryogenic conditions.
The present invention can be used for the fast charging and discharging field of high-power high voltage power supply, especially to load voltage required precision not
High occasion, is particularly well-suited to spark source and charges.
Brief description
The structure composition schematic diagram of the ultracapacitor cascade high voltage device that Fig. 1 is based on for the present invention, in figure：1 is super
Capacitor bank cascade system, 2 control systems, 3 current-limiting inductances, 4 high-voltage capacitors, 5 load control switch；
Fig. 2 is the circuit topology of specific embodiment；
Fig. 3 is the control sequential of control system output in specific embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
As shown in figure 1, the ultracapacitor cascade high voltage device that the present invention is based on includes 5 ingredients：Super electricity
Container group cascade system 1, control system 2, current-limiting inductance 3, M group high-voltage capacitor 4, and M load control switch 5.Super
After the high-pressure side series connection current-limiting inductance 3 of capacitor bank cascade system 1 High voltage output, the electric current connecting M load control switch 5 is defeated
Enter level, the circuit output stage of M load control switch 5 connects the high-pressure stage of M group high-voltage capacitor 4, M group high-voltage capacitor respectively
4 low pressure pole connects the low-voltage output of ultracapacitor cascade system 1 respectively.Ultracapacitor group cascade system 1 is by multiple
Ultracapacitor group is in series, and each ultracapacitor group is connected after a controlling switch diode in parallel again, composition
One-level in ultracapacitor cascade system, forms ultracapacitor group cascade system after plural serial stage.
The present invention is as follows to the control method of ultracapacitor cascade high voltage device：
Determine the ceiling voltage of ultracapacitor cascade system output first according to the voltage of high-voltage capacitor.Do not consider be
During voltage loss in system, the highest that the ceiling voltage of ultracapacitor group cascade system output is equal to high-voltage capacitor loads electricity
The half of pressure.Charging voltage grade according to needed for high-voltage capacitor determines the output voltage of every grade of ultracapacitor group, high pressure
2 times of the electric pressure that capacitive load electric pressure can be superimposed out equal to ultracapacitor group cascade system.Secondly to height
Piezoelectric capsule is grouped, and group forming criterion is according to current-limiting inductance L connected with the high-pressure side of ultracapacitor cascade system output
Inductance value, the capacitance of high-voltage capacitor C, the charging interval of every group of high-voltage capacitor and ultracapacitor cascade system output electricity
Stream ability determines, the charging interval of every group of high-voltage capacitorUltracapacitor group maximum output current need to less than etc.
InWherein U is the ultracapacitor group voltage sums at different levels devoted oneself to work in various combination, and L is described super electricity
The inductance value of current-limiting inductance of high-pressure side series connection of container cascade system output, C are the capacity of high-voltage capacitor.
In ultracapacitor cascade system, every group of ultracapacitor according to after sense of current series connection control switch again and di-
Pole pipe, forms the one-level in ultracapacitor cascade system.Every one-level ultracapacitor group is connected in series to form ultracapacitor
Cascade system.The high-pressure side series connection current-limiting inductance of ultracapacitor cascade system output, current-limiting inductance output terminates all loads
Controlling switch current input terminal, load control switch current output terminal connects the high-pressure side of each group capacitor, each group capacitor respectively
Low-pressure end is all connected with the low-pressure end of ultracapacitor cascade system；Control system output for control ultracapacitor level contact
The control signal end quantity of system is identical with ultracapacitor cascade system series, and is respectively connecting to ultracapacitor cascade system
The drive end of the controlling switch of every one-level, the control end quantity for controlling load control switch of control system output simultaneously with
Load capacitor packet count is identical, and is respectively connecting to the control end of load control switch, the high-tension measurement termination of control system
On the connecting line with load control switch for the current-limiting inductance, to ensure can measure all load capacitances in whole charging process
Voltage on device, the current measurement coil of control system is enclosed within charge circuit.
The control process of the present invention is described below taking the ultracapacitor cascade high voltage device of 10kV, 5mF as a example.As Fig. 2
Shown, the ultracapacitor cascade high voltage device that control method of the present invention is based on adopts 12 grades of series connection, wherein 9 grades super capacitors
Device group voltage 500V, in addition three-level ultracapacitor group voltage respectively 100V, 200V, 300V, ultracapacitor group maximum is defeated
Go out electric current and be 120A, in ultracapacitor cascade high voltage device, controlling switch adopts 1200V, 200A IGBT to switch, diode
From 1200V, 200A general-purpose diode.Control system selects the Time-delayed trigger system on exportable 17 tunnels, and wherein 12 tunnels have phase
With the time delay triggered time, for the opening and close control of IGBT switch in ultracapacitor cascade system, remaining 5 tunnel is used for 5
The control of group high-voltage capacitor load control switch.Current-limiting inductance selects 2.5H, 100A, turn-to-turn is pressure, and 15kV silicon steel plate core is electric
Sense；5 load control switch SCR1, SCR2, SCR3, SCR4, SCR5 select 15kV, 500A Thyristors in series high-voltage switch gear, high
Piezoelectric capsule divides 5 groups, every group of 1mF.Fig. 3 show the controlling switch in the ultracapacitor cascade system of control system output
IGBT control signal and ultracapacitor group output current, 5 load control switch SCR1, SCR2, SCR3, SCR4, SCR5
Control signal and charging current.As wherein square wave is control signal, half-sinusoid is charging current signal, and charging current peak value is
100A.Assume charging target voltage 10kV, then control system only controls 9 groups of 500V ultracapacitor groups and 200V, 300V super
Capacitor bank comes into operation.As shown in figure 3,11 way control switch of ultracapacitor cascade system and the first load control switch
After SCR1 closure, ultracapacitor group charges for high-voltage capacitor C1, and after charging current is reduced to 0, ultracapacitor level contacts
10 way switch of system and the first load control switch SCR1 disconnect, and on high-voltage capacitor C1, voltage is ignoring the situation of system loss
It is issued to 10kV, this charge cycle is 157ms.Wait 3ms it is ensured that the first load control switch SCR1 recovers cut-off state
Afterwards, 10 way control switch of ultracapacitor cascade system and the second load control switch SCR2, the 3rd load control switch
SCR3, the 4th load control switch SCR4, the 5th load control switch SCR5 realize above-mentioned control process successively, after 780ms, high
On piezoelectric capsule, voltage all reaches 10kV, completes charging requirement.Because ultracapacitor cascade system is in current-limiting inductance and control
Loss is existed on switch, on therefore final high-voltage capacitor, voltage is slightly smaller than 10kV, the indemnifying measure of employing be properly increase super
The voltage of level capacitor cascade system or the relatively low ultracapacitor group of several groups of voltage of connecting, determine according to charging voltage situation more
Whether put into.If charging voltage target is 1.4kV, control system controls each 1 group of input of 500V, 200V ultracapacitor group
Use, control system only exports above-mentioned 2 groups of ultracapacitor groups and opens signal, and control process is identical with 10kV charging.
Differential differential equal to ultracapacitor group cascade system minimum voltage 2 times of voltage on high-voltage capacitor.Above-mentioned
In being embodied as, the voltage that ultracapacitor cascade system can be superimposed out is differential to be 100V, therefore on high-voltage capacitor
The differential 200V of voltage, differential in order to reduce this, the cascade of 10V, 20V, 30V can be added in ultracapacitor cascade system to surpass
Level capacitor bank, can be reduced to 20V by differential for the voltage on high-voltage capacitor.
Present invention is mainly used for the fast charging and discharging field of high-power high voltage power supply, based on current ultracapacitor group,
IGBT, diode component, the performance of IGCT series winding high-voltage switch gear, are fully able to meet the demand, apparatus of the present invention are in reality
Now complete to make serial connected super capacitor monomer ultracapacitor number reduce nearly half when 10kV charges, effectively raise and fill
The reliability of electric system.
Claims (2)
1. a kind of control method of ultracapacitor cascade high voltage device, described control method cascades high according to ultracapacitor
The ceiling voltage of the ultracapacitor group cascade system output in pressure device is one of highest goal voltage needed for high-voltage capacitor
Half principle, selects the ultracapacitor group quantity of ultracapacitor group cascade system participation work；Control the super electricity selected
Container group output voltage, reaches 2 times of supply voltage using the voltage that resonance principle makes capacitor in half harmonic period
Principle, charges to high-voltage capacitor,
It is characterized in that, the maximum output current of ultracapacitor group is more than or equal toIn formula：U is to throw in various combination
Enter the ultracapacitor group voltage sums at different levels of work, L is the limit connected with the high-pressure side of ultracapacitor cascade system output
The inductance value of stream inductance, C are the capacity of high-voltage capacitor；When the output current of ultracapacitor is more than ultracapacitor group
During big output current ability, using the control mode of load sequential charging.
2. according to the ultracapacitor cascade high voltage device described in claim 1 control method it is characterised in that in high-tension electricity
After container object charging voltage determines, control system is equal to target charging voltage one according to ultracapacitor group output voltage sum
The ultracapacitor group that half principle selection is devoted oneself to work, then one of M load control switch of control system control is negative
Carry controlling switch closure, and control ultracapacitor group controlling switches at different levels in ultracapacitor group cascade system to be closed at,
The voltage being made this group high-voltage capacitor being connected with this load control switch using resonance principle is reached in half harmonic period
2 times of ultracapacitor group cascade system output voltage；Half harmonic period moment, this load control switch disconnects, and terminates
This group high-voltage capacitor being connected with this load control switch is charged, then control system controls another load control switch
Closure, and control ultracapacitor group cascade system output voltage, to this group high-voltage capacitance being connected with this load control switch
Device charges, and such timesharing sequence packet is charged to high-voltage capacitor.
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| CN201510247271.1A CN104901360B (en) | 2015-05-15 | 2015-05-15 | A kind of control method of ultracapacitor cascade high voltage device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013860A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院电工研究所 | Charging equipment for high-voltage pulse capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03222016A (en) * | 1990-01-26 | 1991-10-01 | Nissin Electric Co Ltd | Control system for reactive power compensator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013860A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院电工研究所 | Charging equipment for high-voltage pulse capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 高压电容器充电电源的研究;张东辉等;《高电压技术》;20080731;第34卷(第7期);第1450-1455页 * |
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