CN106787929A - A kind of fast control power-supply system and control method - Google Patents
A kind of fast control power-supply system and control method Download PDFInfo
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- CN106787929A CN106787929A CN201611146996.2A CN201611146996A CN106787929A CN 106787929 A CN106787929 A CN 106787929A CN 201611146996 A CN201611146996 A CN 201611146996A CN 106787929 A CN106787929 A CN 106787929A
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- Prior art keywords
- bridge
- unit
- supply system
- charging
- breaker
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
Abstract
The invention belongs to pulse power technical field, specifically related to a kind of fast control power-supply system, it is made up of a charging module unit, a H bridge cascade connection multi-level topological structures and a breaker, the input connection alternating current input power supplying of charging module unit, output s ends are respectively connecting to each H-bridge unit in H bridge cascade connection multi-level topological structures, and the output end of H bridge cascade connection multi-level topological structures connects load circuit through breaker.Control power-supply system of the invention fast has practical, H-bridge unit circuit and simple structure, easy to maintenance, the features such as DC voltage utilization rate is high, without configuring independent charging circuit, the volume and cost relative reduction of whole device on each H bridge submodule.
Description
Technical field
The invention belongs to pulse power technical field, and in particular to power-supply system and control are controlled in many capacitor energy storage type connection in series-parallel soon
Method processed.
Background technology
Superconducting tokamak（EAST）Quick control power supply（Referred to as fast control power supply）It is a kind of tool
There is the bulk voltage source type inverter of current source characteristic, its effect is that controlled output electric current real-time tracking plasma drift is produced
Raw displacement signal, for the fast control coil of internal vacuum chamber provides the exciting current of thousands of or tens of kiloamperes, formed magnetic field with
Maintain dynamic equilibrium and accurate location of the plasma in on-circular cross-section, with suppress plasma it is big it is elongated under it is quick
Drift.Fast control power supply is actually a kind of Single-Phase Inverter Source, but from the output current of power supply unlike conventional inverter
Waveform is not sine wave, and its amplitude and frequency all have very strong randomness, and its electric current must hang down according to plasma current
The displacement that Nogata is upwardly deviated from equilbrium position quickly changes, and plasma is in the position of relative equilibrium.While the power supply
Load current demand ripple it is as far as possible small, be this using phase-shift PWM multiple technology to reach system necessary requirement.Usually require that
Fast control power supply for EAST devices can export the load current of thousands of or tens of kiloamperes, and when requiring the response of electric current
Between no more than 1ms or faster, and separate unit current transformer is difficult to realize so big and quick current-responsive, and multigroup change is used for this
The stream series-parallel mode of device unit.Certain fast control coil output current wave requirement is as shown in Figure 1.The power supply is as can be seen from Figure
High-current output pulse in short-term, the usual high current duration is no more than 1s.Astable output electrical current is several ten points of peak point current
One of.
The fast control power supply of operation is to change a social system to form on the basis of mesohigh multi-level frequency conversion device at present.The power supply is by multigroup
Mutually isostructural current transformer is formed in parallel, and separate unit current transformer theory diagram is as shown in Fig. 2 H bridge modules used in the current transformer
Cellular construction figure is as shown in Figure 3.The current transformer is can be seen that from Fig. 2, Fig. 3 mainly using cascaded H-bridges topological structure, due to input
It is alternating voltage, therefore increases three-phase isolation transformer and three-phase diode rectifier bridge, Huo Zheqian in each H bridge module units front end
The end modes such as the one or many transformer of multi output winding.
The shortcoming of prior art：Although control power-supply system can meet wanting for EAST devices experiment using structure shown in Fig. 2 soon
Ask, but there is also following shortcoming：
1. each H bridge modules input side is powered by isolating transformer.Because fast control power supply belongs to short-term operation power supply, that is, have
The sufficient time can be used to be charged to each module.Excessive isolating transformer not only increases equipment cost, also add and sets
Installing space needed for standby.
2. three-phase diode rectification module is had in each H bridge module.Excessive rectifying component causes to control power supply system soon
The possibility that failure occurs in system is improved, and cost also accordingly increases.
3., because momentary pulse electric current is very big, generally required in each H bridge module with more energy storage DC capacitor, therefore
Special preliminary filling electrical circuit must be configured, this also increases the volume and cost of system.
4. during high current is to load discharge, if the DC voltage on electric capacity declines quickly, input can be caused
Side electric current is very big, and larger impact is caused to input power network.
The content of the invention
In order to solve these shortcomings that above-mentioned conventional fast control power supply is present, the present invention provides a kind of fast control of single charge circuit
Power supply, its installing space and equipment cost are minimized.
The present invention is specifically adopted the following technical scheme that：
A kind of fast control power-supply system, is made up of a charging module unit, a H bridge cascade connection multi-level topological structures and a breaker,
The input connection alternating current input power supplying of charging module unit, output end is respectively connecting in H bridge cascade connection multi-level topological structures
Each H-bridge unit, the output end of H bridge cascade connection multi-level topological structures connects load circuit through breaker.
Present invention also offers the control method of fast control power-supply system, using time-sharing charging mode, to load high current/
During tension discharge, stop charging, all H-bridge units simultaneously to load discharge, and by the control to H-bridge unit breaker in middle device
To adjust the quantity for the storage capacitor for discharging, the output voltage values of regulation power supply；In low current/tension discharge or stopping
During the gap of electric discharge, the charging and discharging process of the storage capacitor in all H-bridge units is completed.During precharge, open circuit is disconnected
Device, line precharge is entered using same charging module unit.
Advantage of the present invention：
1. apparatus of the present invention are only with single charhing unit, by appropriate control strategy, using appropriate time-sharing charging control
Mode processed, you can complete the charging process to all of H-bridge unit DC side storage capacitor on convertor equipment, topological structure is simple
Reliable, equipment operation and maintenance more facilitate, while having saved equipment cost and installation dimension.
2. same set of charhing unit is employed, the breaker of rear end is disconnected, you can whole unit module energy storage direct currents are completed
The pre-charge process of electric capacity, efficiency high in pre-charge process, charhing unit utilization rate is high, reduces cost.
Brief description of the drawings
Fig. 1 is to control electric power outputting current oscillogram soon.
Fig. 2 is conventional fast control current transformer for power supply topology diagram.
Fig. 3 is the H-bridge unit module with rectification module and storage capacitor.
Fig. 4 is the converter topologies figure that fast control power supply of the invention is used.
Fig. 5 is H bridge inverter unit structure chart.
Fig. 6 is charhing unit U1 structure charts.
Fig. 7 is the charhing unit U1 structure charts with energy feedback function.
Fig. 8 is that charhing unit gives H bridge module unit charging structure figures.
Fig. 9 a are charhing units to single H-bridge unit charging schematic diagram.
Fig. 9 b are that charhing unit and same polarity export H-bridge unit and give H-bridge unit charging schematic diagram.
Fig. 9 c are that charhing unit and reversed polarity export H-bridge unit and give H-bridge unit charging schematic diagram.
Fig. 9 d are charhing units to multiple H-bridge unit serial connection charge schematic diagrames.
Specific embodiment
The present invention is further detailed with reference to specific embodiment.
Converter topologies are as shown in figure 4, the current transformer uses H as can be seen from Figure in fast control power-supply system of the invention
Bridge cascade connection multi-level topological structure, each bridge arm unit is by m（m≥1）Individual H-bridge unit is in series.In order to improve the defeated of equipment
Go out current class, apparatus of the present invention use n（n≥2）Individual single bridge arm unit mode in parallel.It is a certain in power supply architecture of the present invention
Moment in running order H-bridge unit number can be adjusted according to apparatus of load demand.It is also seen that current transformer from Fig. 4
Output constitute loop through circuit breaker Q F and coil load, mainly based on inductance, the R in figure is circuit and coil to coil load
Equivalent resistance.
H-bridge unit structure used in current transformer of the present invention is as shown in figure 5, the storage capacitor in the structure is big capacitance electricity
Hold.From unlike common structure, converter structure of the present invention has only with single charging module unit U1, the structure of the unit
Two kinds, respectively as shown in Figure 6, Figure 7.As can be seen from Figure 6, the charhing unit is by three-phase diode rectifier and IGBT copped wave units
Three-phase alternating voltage is changed into DC voltage by composition, three-phase diode rectifier, and copped wave unit primarily serves regulation output electricity
The effect of pressure and output current.Charhing unit shown in Fig. 7 is made up of three-phase IGBT bridge rectifiers and two-way DC/DC units.By
In using bilateral device, therefore the two-way flow of energy can be realized.Structure shown in Fig. 7 is filled except can complete structure shown in Fig. 6
Outside the function of electric unit, can also be in feedback energy to power network.LC loops in Fig. 6, Fig. 7 charging module unit are filter circuit.
The connected mode figure of the charging module unit with energy feedback function shown in the H-bridge unit and Fig. 7 in Fig. 4 is as shown in figure 8, figure
Connected mode is similar shown in 6.
Belong to the power supply of big pulse current in short-term and long-time low current working method due to fast control power supply, thus using point
When the mode that charges charged to the DC side storage capacitor of the H-bridge unit in converter cell.Put to load high current/voltage
When electric, stop charging, all H-bridge units are adjusted simultaneously to load discharge by the control to H-bridge unit breaker in middle device
The quantity of the storage capacitor for discharging, the output voltage values of regulation power supply；Discharged in low current/tension discharge or stopping
During gap, the charging and discharging process of the storage capacitor in all H-bridge units is completed.To each H bridges list in whole power-supply system
When line precharge enters in unit, breaker QF in Fig. 4 need to be disconnected.Charge only to charge to a H-bridge unit every time, under which
The DC voltage of each H-bridge unit can be charged to the output voltage values of charging module unit U1, need not be filled under which
The module bypass of electricity falls（Switching tube S1, S2 in H-bridge unit are simultaneously turned on or switching tube S3, S4 are simultaneously turned on, and this fills
Electrically schematic diagram is as illustrated in fig. 9）；Can also be charged to multiple H-bridge units every time, each H-bridge unit DC side under which
Voltage is changeable, can be electrically charged the output voltage polarity of H-bridge unit by control to adjust, various chargings in this condition
Schematic diagram is as shown in Fig. 9 b, 9c, 9d（Because number of modules is numerous, it is only with two H-bridge units in figure for the purpose of simplifying the description
Example）.Be can be seen that from Fig. 9 a-9d, need to only change the regulation that control strategy is capable of achieving each H-bridge unit DC voltage, and each H
Bridge unit DC voltage value is specific relevant with current value size needed for current time.
In addition to the implementation, the present invention can also have other embodiment.All use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (8)
1. it is a kind of to control power-supply system soon, it is characterised in that by a charging module unit（U1）, a H bridge cascade connection multi-level topological structures
With a breaker（QF）Composition, the charging module unit（U1）Input connection alternating current input power supplying, output end connects respectively
It is connected to each H-bridge unit in H bridge cascade connection multi-level topological structures, the output end of the H bridges cascade connection multi-level topological structure
Through breaker（QF）Connection load circuit.
2. it is as claimed in claim 1 to control power-supply system soon, it is characterised in that the H bridges cascading topological structure is by least 2 bridges
Arm unit is composed in parallel, and each bridge arm unit is composed in series by least one H-bridge unit.
3. it is as claimed in claim 1 to control power-supply system soon, it is characterised in that the charging module unit is by rectifier and DC/DC
Unit connection composition.
4. control power-supply system as claimed in claim 3 fast, it is characterised in that the rectifier be three-phase diode rectifier or
IGBT bridge rectifiers.
5. it is as claimed in claim 3 to control power-supply system soon, it is characterised in that the rectifier is IGBT copped waves unit or two-way
DC/DC units.
6. the control method of power-supply system is controlled soon described in claim 1, it is characterised in that time-sharing charging mode is used, to load
During high current/tension discharge, stop charging, all H-bridge units simultaneously to load discharge, and by H-bridge unit breaker in middle device
Part control come adjust for discharge storage capacitor quantity, the output voltage values of regulation power supply；In low current/tension discharge
Or during stopping the gap of electric discharge, complete the charging and discharging process of the storage capacitor in all H-bridge units.
7. control method as claimed in claim 6, it is characterised in that during precharge, cut-off breaker（QF）, using same charging
Modular unit（U1）Enter line precharge.
8. control method as claimed in claim 6, it is characterised in that when charging only to one of H-bridge unit, by control
Switching device in remaining H-bridge unit bypasses remaining H-bridge unit, and one of H-bridge unit DC voltage is chargeable
To charging module unit（U1）Output voltage values；When being charged to multiple H-bridge units, by controlling the multiple H-bridge unit
In switching device control to be electrically charged the output voltage polarity of H-bridge unit, adjusted with this and be electrically charged H-bridge unit DC side electricity
Pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146996.2A CN106787929A (en) | 2016-12-13 | 2016-12-13 | A kind of fast control power-supply system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146996.2A CN106787929A (en) | 2016-12-13 | 2016-12-13 | A kind of fast control power-supply system and control method |
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| CN106787929A true CN106787929A (en) | 2017-05-31 |
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| CN201611146996.2A Pending CN106787929A (en) | 2016-12-13 | 2016-12-13 | A kind of fast control power-supply system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980983A (en) * | 2017-12-27 | 2019-07-05 | 核工业西南物理研究院 | A kind of power module of modified form pulsed high voltage generator |
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| US20110140535A1 (en) * | 2009-12-16 | 2011-06-16 | Samsung Sdi Co., Ltd. | Power converting device for new renewable energy storage system |
| CN105071403A (en) * | 2015-08-05 | 2015-11-18 | 哈尔滨理工大学 | Reactive compensation device based on double H-bridge modular multilevel topology and control method |
| TW201616763A (en) * | 2014-10-21 | 2016-05-01 | 國立清華大學 | Power management method and controller thereof |
| CN206389301U (en) * | 2016-12-13 | 2017-08-08 | 苏州富艾姆工业设备有限公司 | A kind of fast control power-supply system |
| CN108092520A (en) * | 2016-11-14 | 2018-05-29 | 江苏同芯电气科技有限公司 | Power-supply system is controlled in a kind of H bridge connection in series-parallel based on single charge circuit soon |
-
2016
- 2016-12-13 CN CN201611146996.2A patent/CN106787929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110140535A1 (en) * | 2009-12-16 | 2011-06-16 | Samsung Sdi Co., Ltd. | Power converting device for new renewable energy storage system |
| TW201616763A (en) * | 2014-10-21 | 2016-05-01 | 國立清華大學 | Power management method and controller thereof |
| CN105071403A (en) * | 2015-08-05 | 2015-11-18 | 哈尔滨理工大学 | Reactive compensation device based on double H-bridge modular multilevel topology and control method |
| CN108092520A (en) * | 2016-11-14 | 2018-05-29 | 江苏同芯电气科技有限公司 | Power-supply system is controlled in a kind of H bridge connection in series-parallel based on single charge circuit soon |
| CN206389301U (en) * | 2016-12-13 | 2017-08-08 | 苏州富艾姆工业设备有限公司 | A kind of fast control power-supply system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980983A (en) * | 2017-12-27 | 2019-07-05 | 核工业西南物理研究院 | A kind of power module of modified form pulsed high voltage generator |
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