CN103457283A - Super capacitor dynamic voltage recovery system and power supply system - Google Patents
Super capacitor dynamic voltage recovery system and power supply system Download PDFInfo
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- CN103457283A CN103457283A CN2013104255838A CN201310425583A CN103457283A CN 103457283 A CN103457283 A CN 103457283A CN 2013104255838 A CN2013104255838 A CN 2013104255838A CN 201310425583 A CN201310425583 A CN 201310425583A CN 103457283 A CN103457283 A CN 103457283A
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Abstract
The invention discloses a super capacitor dynamic voltage recovery system which comprises a power supply, a dynamic voltage restorer and loads. The dynamic voltage restorer comprises an energy storing module, an inverter module, a filtration module, a control circuit and a protection circuit. The energy storage module is used for storing compensation power. The inverter module is used for outputting compensation voltages. The control circuit comprises a first DSP control module a second DSP control module, wherein the first DSP control module is used for carrying out detection and analysis on the voltage signals and current signals in real time, and the second DSP control module is used for displaying the states of the voltage signals and the current signals in real time. The protection circuit is used for carrying out protection on the main circuit of the dynamic voltage restorer. The super capacitor dynamic voltage recovery system has the advantages of being high in response speed, large in storage capacity, good in energy-saving effect and strong in instantaneity.
Description
Technical field
The present invention relates to electrical technology, be specifically related to a kind of super capacitor dynamic voltage recovery system and power-supply system.
Background technology
Along with the electric power system scale enlarge gradually and that power equipment uses is day by day universal, electric energy has become the key factor closely bound up with the human lives, along with industrial development to producing requirement, requirement to the quality of power supply is also more and more higher, line voltage moment rises sharply, rapid drawdown and flickering frequently occur, to the running precision of these precision equipments and instrument with use safety to form very large threat.
Dynamic electric voltage recovery device (Dynamic Voltage Restorer, be called for short DVR) be exactly to be connected to various precision equipments and instrument front end, for detection of with solve various transient electric-energy quality, this device is when voltage being detected and fall, major loop fast is added to bucking voltage, reach the purpose of " recovery " voltage, thereby guarantee the stable operating voltage of various precision equipments and instrument.
In traditional dynamic electric voltage recovery device, what its energy storage device adopted is batteries to store energy, flywheel energy storage and superconducting energy storage substantially, and wherein, storage battery can not provide larger power, can not meet in real time the demand of DVR instantaneous relase relatively high power when voltage compensation; Flywheel energy storage can provide higher power, but is limited with the kinetic energy that the method for increase Rotary Inertia of Flywheel increases flywheel; Although superconducting energy storage can provide very large power at short notice, the defect that the critical temperature of superconductor is low, material price is high is brought certain restriction to the application of superconducting energy storage.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of dynamic voltage recovery system of super capacitor, optimizes the performance of dynamic electric voltage restorer.
On the one hand, the invention provides a kind of super capacitor dynamic voltage recovery system, comprise power supply, dynamic electric voltage recovery device and load, wherein, described dynamic electric voltage recovery device comprises energy-storage module, inversion module, filtration module, control circuit and protective circuit,
Described energy-storage module comprises super capacitor unit and DC energy storage unit, by electronic switch, with power supply, is connected, for storing the compensation electric energy;
Described inversion module, be connected in parallel with described energy-storage module, for obtain bucking voltage output from energy-storage module;
Described filtration module, be connected in parallel with inversion module, the high order harmonic component of the bucking voltage of exporting for the filtering inversion module;
Described control circuit comprises a DSP control module and the 2nd DSP control module, input and the energy-storage module of described control circuit are connected in parallel, output is connected with inversion module, wherein, a described DSP control module carries out detecting in real time and analyzing for the voltage and current signal to the energy-storage module circuit, described the 2nd DSP control module is used for showing in real time the state of voltage and current signal, and gives described inversion module by the state feedback of described voltage and current signal;
Described protective circuit, the input of described protective circuit is connected with filtration module, with power supply, with the electric power system that load forms, is connected simultaneously, and output is connected with inversion module, for dynamic electric voltage recovery device is protected.
Further, described inversion module adopts the 3 single-phase H bridge as main circuit topological structure, and wherein, described 3 single-phase H bridge comprises 12 power switch pipes and diode pair.
Further, described super capacitor unit comprises at least one ultracapacitor, and wherein, described at least one ultracapacitor is by series connection and/or the rear array that forms in parallel.
Further, described energy-storage module also comprises storage battery, for the electric energy that affords redress.
Further, described dynamic electric voltage recovery device also comprises mechanical by-pass switch, solid-state by-pass switch and grid-connected switch,
Described mechanical by-pass switch is connected between power supply and load, mechanical switch, consists of;
Described grid-connected switch is connected between dynamic electric voltage recovery device and power supply and, between dynamic electric voltage recovery device and load, consists of mechanical switch;
Described solid-state by-pass switch is connected between two grid-connected switches, and is connected in parallel with dynamic electric voltage recovery device, controlled electronic power switch, consists of.
Further, described mechanical switch is wherein a kind of in circuit breaker or contactor.
Further, described electronic power switch is IGBT or MOSFET.
Further, described dynamic electric voltage recovery device also comprises coupling transformer, and secondary and the filtration module of described coupling transformer are connected in parallel, and former edge joint enters the electric power system of power supply and load composition.
On the other hand, the invention provides a kind of power-supply system, comprise the super capacitor dynamic voltage recovery system that any embodiment of the present invention provides, described power-supply system is phase three-wire three power-supply system or three-phase four-wire power system.
The super capacitor dynamic voltage recovery system that the embodiment of the present invention provides, by adopting the energy storage device of ultracapacitor as the super capacitor dynamic electric voltage recovery device, by adopting two DSP control modules, described super capacitor dynamic electric voltage recovery device is controlled, wherein, the one DSP control module detects in real time and analyzes for the voltage and current signal is carried out, the 2nd DSP control module is for being shown the voltage and current signal condition in real time, and voltage and current detection information is fed back to inversion module, the quick responsive feedback information of inversion module starts compensation, produce an amplitude and the adjustable voltage of phase angle, after the system voltage stack, make load side voltage unaffected.Thus, make that the super capacitor dynamic voltage recovery system has that fast response time, storage volume are large, good energy-conserving effect, real-time beneficial effect.
The accompanying drawing explanation
Below will the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present invention by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing, in accompanying drawing:
Fig. 1 is the structure chart of the super capacitor dynamic voltage recovery system in first embodiment of the invention;
Fig. 2 is the operation principle schematic diagram of the super capacitor dynamic voltage recovery system in first embodiment of the invention;
Fig. 3 is the structure chart of the super capacitor dynamic voltage recovery system in second embodiment of the invention;
Fig. 4 is the bypath system schematic diagram in second embodiment of the invention;
Fig. 5 is the structure chart of the super capacitor dynamic voltage recovery system in third embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, only show part related to the present invention in accompanying drawing but not full content.
The super capacitor dynamic voltage recovery system of the embodiment of the present invention is mainly used in petrochemical industry, textile industry, advanced manufacture, grid company, medical industry, semicon industry etc. the quality of power supply is required to high industry, for example: can be installed in series between the server and system power supply of computer center, prevent that the system voltage interference from causing computer and server failure, cause loss of data, improve the security reliability of computer system; Also can be connected between sensitive load and system power supply, prevent that the system voltage interference from causing the sensitive load operation irregularity, for example: the super capacitor dynamic electric voltage recovery device that the embodiment of the present invention can be provided is connected between semiconductor factory's power supply and power load, prevent the system voltage fluctuation, fall with flickering and cause semiconductor factory to produce a large amount of waste products and huge economic loss.
Figure 1 illustrates the first embodiment of the present invention.
Fig. 1 is the structure chart according to the super capacitor dynamic voltage recovery system of first embodiment of the invention; as shown in Figure 1; the super capacitor dynamic voltage recovery system that the present embodiment provides comprises power supply, dynamic electric voltage recovery device and load; wherein; described dynamic electric voltage recovery device comprises energy-storage module 11, inversion module 12, filtration module 13, control circuit 14 and protective circuit 15; described energy-storage module 11 comprises super capacitor unit 111 and DC energy storage unit 112, and described control circuit 14 comprises a DSP control module 141 and the 2nd DSP control module 142.
Described energy-storage module 11 comprises super capacitor unit 111 and DC energy storage unit 112, and wherein, described super capacitor unit 111 comprises at least one ultracapacitor, and wherein, described at least one ultracapacitor is by series connection and/or the rear array that forms in parallel.Described DC energy storage unit 112 is connected with power module by electronic switch, for storing the electric energy of direct current form.The electric energy that described energy-storage module 11 compensates load for storage, when control circuit 14 detects voltage distortion (being mainly that voltage falls and the voltage rising), voltage distortion information is fed back to inversion module 12, the quick responsive feedback information of inversion module 12, and export an amplitude and the adjustable bucking voltage of phase angle, after the system voltage stack, the voltage of proof load end is unaffected.Described inversion module 12 is for the bucking voltage that receives energy-storage module 11 and output to filtration module 13.Described filtration module 13 is in parallel with inversion module 12, adopts the LC filter, the high order harmonic component of the bucking voltage of exporting for filtering inversion module 12.The input of described control circuit 14 is connected with the energy-storage module output, the output of control circuit 14 is connected with inversion module 12, this control circuit 14 specifically comprises a DSP control module 141 and the 2nd DSP control module 142, wherein, a described DSP control module 141 detects in real time and analyzes for the voltage and current signal is carried out, described the 2nd DSP control module 142 is for showing in real time the state of voltage and current signal, and gives described inversion module 12 by the state feedback of described voltage and current signal.The input of described protective circuit 15 is connected with filtration module 13; with power supply, with the electric power system that load forms, be connected simultaneously; output is connected with inversion module 12, for control inversion module 12 actions under system short-circuit or Overload, so that dynamic electric voltage recovery device is protected.
Fig. 2 is the operation principle schematic diagram according to the super capacitor dynamic voltage recovery system of first embodiment of the invention.Dynamic electric voltage recovery device of the present invention adopts the mode of phase voltage compensation, and the phase voltage of proof load side is normal and symmetrical on phase place, can be used for phase three-wire three power-supply system or three-phase four-wire power system.When electrical network generation quality of voltage problem, often there will be the amplitude of three-phase voltage not wait or the asymmetric situation of phase place, therefore can only adopt the DVR based on the phase voltage compensation to come each phase voltage amplitude of proof load side normal and symmetrical on phase place.Dynamic electric voltage recovery device is by DSP control module 141 real-time detecting systems (or load) voltage of control module 14, when a described DSP control module detects the system voltage distorted, the voltage distortion information detected is sent to the 2nd DSP control module, described the 2nd DSP control module receiver voltage distortion information also shows in real time, simultaneously, the one DSP control module feeds back to inversion module by voltage distortion information, the described inversion module voltage distortion information that response receives fast, and startup compensation, produce an amplitude and the adjustable voltage of phase angle, after the system voltage stack, make load side voltage unaffected.
The super capacitor dynamic voltage recovery system that the embodiment of the present invention provides, by adopting the energy storage device of super capacitor unit as the super capacitor dynamic electric voltage recovery device, make described super capacitor dynamic voltage recovery system have larger storage volume; In addition, by the DSP control module, real-time detecting system voltage, after voltage distortion being detected, will feed back to inversion module, the quick responsive feedback information of inversion module, produce an amplitude and the adjustable bucking voltage of phase angle, after the system voltage stack, make load side voltage unaffected.Thus, make the super capacitor dynamic voltage recovery system there is fast response time, large, the real-time beneficial effect of storage volume.
Figure 3 illustrates the second embodiment of the present invention.
Fig. 3 is the structure chart according to the super capacitor dynamic voltage recovery system of second embodiment of the invention, as shown in Figure 3, the super capacitor dynamic voltage recovery system that the present embodiment provides comprises power supply, dynamic electric voltage recovery device and load, wherein, described dynamic electric voltage recovery device comprises energy-storage module 21, inversion module 22, filtration module 23, control circuit 24, protective circuit 25, machinery by-pass switch 26, grid-connected switch 27 and solid-state by-pass switch 28, described energy-storage module 21 comprises super capacitor unit 211 and DC energy storage unit 212, described control circuit 24 comprises a DSP control module 241 and the 2nd DSP control module 242.
In the present embodiment, described energy-storage module 21 adopts super capacitor unit 211 as energy storage device, because the ultracapacitor monomer voltage is lower, need many ultracapacitors by series connection and/or in parallel for after array as using a unit, so that larger voltage to be provided, its capacity can reach 200KvA, can meet the demand of DVR larger voltage of instantaneous relase when voltage compensation.Therefore, can, using ultracapacitor as energy storage device, by substituting storage battery, meet the demand of the development of electric power system to power energy storing device.Have that the speed of discharging and recharging is fast, environmentally safe, the advantage such as have extended cycle life, make the dynamic response characteristic of dynamic electric voltage recovery device be greatly improved.
Described inversion module 22 adopts the 3 single-phase H bridge as main circuit topological structure, and wherein, described 3 single-phase H bridge comprises 12 power switch pipes and diode pair.The inversion unit of DVR is in fact dynamically controlled inverter of an amplitude, phase place, the core link as the dynamic electric energy compensation arrangement, the inversion unit of DVR need to meet two requirements: one, for reducing or avoiding the secondary pollution to electrical network, the output voltage waveforms quality that guarantees inversion module is good, can effectively suppress each harmonic; Two, for realizing the dynamic compensation to the quality of voltage problem, inversion module will have good dynamic responding speed, and when electrical network generation voltage failure, the compensating instruction that control circuit is sent will respond rapidly.Adopt the main circuit topological structure of three individual event H bridges as inversion module in the present embodiment, have that connection type is simple, stable performance, easily control and the cost of implement device at the bottom of characteristics, in addition, for reducing the device volume cost and improving response speed, described DVR adopts online mode to be connected with electrical network.
The 3 single-phase H bridge construction combines to produce three-phase output by three single-phase full bridges, between three-phase, does not intercouple, all relatively independent in circuit and control, therefore controls the simplest.The 3 single-phase H bridge construction needs 12 power switch pipes and diode pair to form altogether, and the DC converting link of each phase and the output filtering link all independent separately.In parallel with ultracapacitor C1 after the input parallel connection of three single-phase H bridge-type inverter A, B, C, ultracapacitor C1 is in parallel with DC energy storage unit 212, the input access power end of three-phase H bridge-type inverter.
Energy storage link and the DC converting link of inversion module 22 each phases of employing 3 single-phase H bridge construction are all separate, inversion module 22 is connected with power-supply system by filtration module 23, not there will be because of in inversion module 22 when different brachium pontis power switch pipe conducting cause the problem of power-supply system side phase fault or load-side phase fault, therefore adopt the low-voltage distribution system DVR of 3 single-phase H bridge inverter structure can save coupling transformer fully.
Described filtration module 23 adopts the LC filter to carry out the filtering high order harmonic component, the pure sinusoidal voltage of voltage needs due to load, in order to reduce or to avoid the super capacitor dynamic electric voltage recovery device to cause secondary pollution to supply voltage, the output of super capacitor dynamic electric voltage recovery device must connect the high order harmonic component in the bucking voltage of filtering module for filtering off inverter output.
The input of described control circuit 24 and energy-storage module 21 are connected in parallel, and output is connected with inversion module 22, comprise a DSP control module 241 and the 2nd DSP control module 242.Wherein, a described DSP control module 241 is responsible for the generation of input, sampling, processing, computing and driving pulse, when the system voltage distorted being detected, voltage distortion information is fed back to inversion module 22, the rapid responsive feedback information of inversion module, the output bucking voltage.In addition, a described DSP control module 241 and the 2nd DSP control module 242 by dual port RAM realize that the signal of the first and second DSP control modules is synchronous, exchanges data and coordinated operation, make the 2nd DSP module 242 can show in real time voltage or current information.By the collaborative work of the first and second DSP control modules and dual port RAM, realized real-time analysis and demonstration to sampled signal, there is real-time good, fast operation, control precision is high, and configuration flexibility is good, the advantage that the system extension ability is strong.
The input of described protective circuit 25 is connected with the output of filtration module 23, with super capacitor dynamic voltage recovery system major loop, is connected, and output is connected with inversion module 22, under system short-circuit or Overload, major loop being protected simultaneously.The detection technique that the present embodiment adopts is compound PHASE-LOCKED LOOP PLL TECHNIQUE; can complete high accuracy, tracking fast to supply voltage; can make DVR (be less than 5ms) in a short period of time and make response; when a DSP control module 241 of control circuit 24 detects system electric current is very large in a short period of time; by the current information process control algolithm detected; produce for triggering the pulse signal of electronic power switch; now protective circuit 24 triggers thyristor and circuit breaker in a short period of time; until ultimate current all flows through circuit breaker, protection DVR.
Described mechanical by-pass switch 26 is connected between power supply and load, and the wherein a kind of mechanical switch in circuit breaker or contactor forms, for installing bypass.
Described grid-connected switch 27 is connected between dynamic electric voltage recovery device and power supply and between dynamic electric voltage recovery device and load, a kind of mechanical switch in circuit breaker or contactor forms, for coordinating with described solid-state by-pass switch 28, in the situation that do not affect the load power supply, realize the switching of dynamic electric voltage recovery device, to carry out turnaround of unit, maintenance.
The bypass formed by described mechanical switch, in system maintenance, play an important role, utilize mechanical switch, can, by the DVR bypass, directly by system power supply, switch to mechanical bypass when normal repair and maintenance, make the not interrupt of powering of loading, and, when DVR itself breaks down, switch to mechanical bypass, directly by system power supply.
Described solid-state by-pass switch 28 is connected between two grid-connected switches, and is connected in parallel with super capacitor dynamic electric depressor, two-way controlled electronic power switch, consists of, and described electronic power switch is IGBT or MOSFET, for quick bypass inversion module 22.For requiring higher quick response system, can be connected in IGBT or MOSFET in parallel the dynamic restorer of super capacitor two ends, reach the switching without time delay.
As shown in Figure 4, Fig. 4 is the bypath system schematic diagram in second embodiment of the invention, when power supply normally moves, the bypass of DVR device, the circuit that electric current forms by two-way controllable electronic switch, can effectively improve the DVR unit efficiency like this, reduces the power loss caused due to device itself; When supply voltage occurs to fall temporarily, disconnect fast bypass and export rapidly bucking voltage.
In a preferred embodiment of the invention, described energy-storage module 21 can also be used in conjunction with storage battery, use empty wire frame representation in Fig. 3, when falling frequently appears in power-supply system, when the frequent output bucking voltage of described energy-storage module 21 causes energy storage inadequate, described storage battery can provide electric energy supplement for energy-storage module 21, increases the protection to load supplying.
The super capacitor dynamic voltage recovery system of the present embodiment, by increasing mechanical by-pass switch, solid-state by-pass switch and grid-connected switch, make when power-supply system is normally moved, the bypass of DVR device, electric current is by two-way controllable electronic switch circuit, can effectively improve the DVR unit efficiency like this, reduce the power loss caused due to device itself; When the supply voltage distorted, disconnect fast bypass rapid output bucking voltage, and can in the situation that do not affect load supplying, to system, carry out inspection and maintenance.
Figure 5 illustrates the third embodiment of the present invention.
Fig. 5 is the structure chart of the super capacitor dynamic voltage recovery system in third embodiment of the invention.As shown in Figure 5; the super capacitor dynamic voltage recovery system that the present embodiment provides comprises power supply, dynamic electric voltage recovery device and load; wherein; described dynamic electric voltage recovery device comprises energy-storage module 31, inversion module 32 and filtration module 33, control circuit 34, protective circuit 35, mechanical by-pass switch 36, grid-connected switch 37 and solid-state by-pass switch 38; described energy-storage module 31 comprises super capacitor unit 311 and DC energy storage unit 312, and described control circuit 34 comprises a DSP control module 341 and the 2nd DSP control module 342.
In the present embodiment; energy-storage module 21, inversion module 22 and filtration module 23, control circuit 24, protective circuit 25, mechanical by-pass switch 26, grid-connected switch 27, solid-state by-pass switch 28 that the energy-storage module 31 that described dynamic electric voltage recovery device comprises, inversion module 32 and filtration module 33, control circuit 34, protective circuit 35, mechanical by-pass switch 36, grid-connected switch 37, solid-state by-pass switch 38 comprise with the dynamic electric voltage recovery device described in the second embodiment are identical, do not repeat them here.
Different from the second embodiment is, the present embodiment has increased coupling transformer, secondary and the filtration module of described coupling transformer are connected in parallel, former edge joint enters the electric power system of power supply and load composition, for improving the bucking voltage produced by described inversion module, and this bucking voltage is coupled in power circuit.The benefit of doing like this is to make super capacitor dynamic voltage recovery system of the present invention to adopt in middle high-pressure electrical network system.
In the present embodiment, the 3 single-phase H bridge construction consists of 12 power switch pipes and diode pair, and the DC converting link of each phase and output filtering link are all independent separately.The former limit of three coupling transformers is connected to respectively the output of three-phase H bridge inverter by filter separately, in parallel with ultracapacitor C1 after the input parallel connection of three single-phase H bridge-type inverter A, B, C, ultracapacitor C1 is in parallel with DC energy storage unit, and the input of three-phase H bridge-type inverter is connected to the access power end by coupling transformer.
The super capacitor dynamic voltage recovery system of the present embodiment, by increasing the coupling transformer be connected in parallel with filter, the bucking voltage that raising is produced by described inversion module, and this bucking voltage is coupled in power circuit, make described super capacitor dynamic electric voltage recovery device not only can in, in low voltage electric power system, use, and can be applied in the power-supply system of middle high-pressure.
The super capacitor dynamic voltage recovery system that the embodiment of the present invention provides, by comprising the energy-storage module output compensation electric energy of ultracapacitor and DC energy storage unit, described inversion module receives the compensation electric energy and outputs to filtration module, after filtration module filtering high order harmonic component, bucking voltage is transported to load, in addition, super capacitor dynamic voltage recovery system provided by the invention, adopt two DSP control modules as control system, by a DSP control module, can carry out detecting in real time and analyzing to the voltage and current signal, the state that can show in real time the voltage and current signal by the 2nd DSP control module.In addition; also adopt protective circuit; under system short-circuit or Overload, can be protected the major loop of dynamic electric voltage recovery device; super capacitor dynamic voltage recovery system provided by the invention; change in voltage that can the Real-Time Monitoring load end; can the voltage distortion of load end be responded rapidly, and the voltage that affords redress, have that fast response time, storage volume are large, a good energy-conserving effect, real-time, non-maintaining characteristics.
Obviously, those skilled in the art should be understood that, each module of foregoing invention can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can realize with the executable program code of computer installation, thereby they can be stored in storage device and be carried out by calculation element, perhaps they are made into respectively to each integrated circuit modules, or become the single integrated circuit module to realize a plurality of module makings in them.Like this, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various changes and variation.All any modifications of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included within spirit of the present invention and principle.
Claims (9)
1. a super capacitor dynamic voltage recovery system, comprise power supply, dynamic electric voltage recovery device and load, it is characterized in that, described dynamic electric voltage recovery device comprises energy-storage module, inversion module, filtration module, control circuit and protective circuit,
Described energy-storage module comprises super capacitor unit and DC energy storage unit, by electronic switch, with power supply, is connected, for storing the compensation electric energy;
Described inversion module, be connected in parallel with described energy-storage module, for obtain bucking voltage output from energy-storage module;
Described filtration module, be connected in parallel with inversion module, the high order harmonic component of the bucking voltage of exporting for the filtering inversion module;
Described control circuit comprises a DSP control module and the 2nd DSP control module, input and the energy-storage module of described control circuit are connected in parallel, output is connected with inversion module, wherein, a described DSP control module carries out detecting in real time and analyzing for the voltage and current signal to the energy-storage module circuit, described the 2nd DSP control module is used for showing in real time the state of voltage and current signal, and gives described inversion module by the state feedback of described voltage and current signal;
Described protective circuit, the input of described protective circuit is connected with filtration module, with power supply, with the electric power system that load forms, is connected simultaneously, and output is connected with inversion module, for dynamic electric voltage recovery device is protected.
2. super capacitor dynamic voltage recovery system according to claim 1, is characterized in that, described inversion module adopts the 3 single-phase H bridge as main circuit topological structure, and wherein, described 3 single-phase H bridge comprises 12 power switch pipes and diode pair.
3. super capacitor dynamic voltage recovery system according to claim 1, is characterized in that, described super capacitor unit comprises at least one ultracapacitor, and wherein, described at least one ultracapacitor is by series connection and/or the rear array that forms in parallel.
4. super capacitor dynamic voltage recovery system according to claim 3, is characterized in that, described energy-storage module also comprises storage battery, for the electric energy that affords redress.
5. super capacitor dynamic voltage recovery system according to claim 1, is characterized in that, described dynamic electric voltage recovery device also comprises mechanical by-pass switch, solid-state by-pass switch and grid-connected switch,
Described mechanical by-pass switch is connected between power supply and load, mechanical switch, consists of;
Described grid-connected switch is connected between dynamic electric voltage recovery device and power supply and, between dynamic electric voltage recovery device and load, consists of mechanical switch;
Described solid-state by-pass switch is connected between two grid-connected switches, and is connected in parallel with dynamic electric voltage recovery device, controlled electronic power switch, consists of.
6. super capacitor dynamic voltage recovery system according to claim 5, is characterized in that, described mechanical switch is wherein a kind of in circuit breaker or contactor.
7. super capacitor dynamic voltage recovery system according to claim 5, is characterized in that, described electronic power switch is IGBT or MOSFET.
8. super capacitor dynamic voltage recovery system according to claim 1, it is characterized in that, described dynamic electric voltage recovery device also comprises coupling transformer, and secondary and the filtration module of described coupling transformer are connected in parallel, and former edge joint enters the electric power system of power supply and load composition.
9. a power-supply system, is characterized in that, comprises super capacitor dynamic voltage recovery system as described as any one in claim 1-8, and described power-supply system is phase three-wire three power-supply system or three-phase four-wire power system.
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| CN104638653A (en) * | 2015-03-05 | 2015-05-20 | 东南大学 | Cooperation control method for DVR (dynamic voltage restorer) and SSTS (solid-state transfer switch) |
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| CN104638653A (en) * | 2015-03-05 | 2015-05-20 | 东南大学 | Cooperation control method for DVR (dynamic voltage restorer) and SSTS (solid-state transfer switch) |
| CN104917195A (en) * | 2015-07-01 | 2015-09-16 | 国网智能电网研究院 | Static synchronous series compensation device and control method thereof |
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| CN112510804A (en) * | 2020-11-26 | 2021-03-16 | 中铁第一勘察设计院集团有限公司 | Super capacitor energy storage device control system based on voltage change rate |
| CN112510804B (en) * | 2020-11-26 | 2024-04-30 | 中铁第一勘察设计院集团有限公司 | Super capacitor energy storage device control system based on voltage change rate |
| CN113224765A (en) * | 2021-05-17 | 2021-08-06 | 国网河南省电力公司洛阳供电公司 | Dynamic compensation method for voltage sag fault of high-power equipment |
| CN114362569A (en) * | 2021-11-10 | 2022-04-15 | 四川旷谷信息工程有限公司 | Motor train unit ground power supply sharing direct-current bus and control method thereof |
| CN114362569B (en) * | 2021-11-10 | 2023-08-15 | 四川旷谷信息工程有限公司 | EMUs ground power supply sharing direct current bus and control method thereof |
| CN115473328A (en) * | 2022-11-02 | 2022-12-13 | 东方博沃（北京）科技有限公司 | Dual power supply switching system and method, electronic equipment and storage medium |
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