CN103457283B - A kind of super capacitor dynamic voltage recovery system and power-supply system - Google Patents
A kind of super capacitor dynamic voltage recovery system and power-supply system Download PDFInfo
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Abstract
The invention discloses a kind of super capacitor dynamic voltage recovery system, described system comprises: power supply, dynamic electric voltage recovery device, load, described dynamic electric voltage recovery device comprises energy-storage module, inversion module and filtration module, control circuit and protective circuit, described energy-storage module is for storing compensation electric energy, and described inversion module is for exporting bucking voltage; Described control circuit comprises the first and second DSP control module, and wherein, described first DSP control module is used for carrying out real-time examination and analysb to voltage and current signal, and described second DSP control module is used for the state of display voltage and current signal in real time; Described protective circuit is used for protecting the major loop of dynamic electric voltage recovery device.Super capacitor dynamic voltage recovery system provided by the invention has that fast response time, storage volume are large, good energy-conserving effect, real-time beneficial effect.
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 expansion gradually of electric power system scale and the day by day universal of power equipment use, electric energy has become the key factor closely bound up with human lives, along with industrial development is to production requirement, also more and more higher to the requirement of the quality of power supply, line voltage rises sharply instantaneously, rapid drawdown and flickering frequently occur, and forms very large threat to the running precision of these precision equipments and instrument and use safety.
Dynamic electric voltage recovery device (DynamicVoltageRestorer, be called for short DVR) be exactly be connected to various precision equipment and instrument front end, for detecting and solving various transient electric-energy quality, this device is when Voltage Drop being detected, be added to bucking voltage major loop fast, reach the object of " recovery " voltage, thus ensure the stable operating voltage of various precision equipment 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 the demand of DVR instantaneous relase relatively high power when voltage compensation in real time; Flywheel energy storage can provide higher power, but is limited with the kinetic energy increasing the method for Rotary Inertia of Flywheel and increase 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 brings 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 supercapacitive cell and DC energy storage unit, is connected with power supply by electronic switch, for storing compensation electric energy;
Described inversion module, is connected in parallel with described energy-storage module, for obtaining bucking voltage from energy-storage module and exporting;
Described filtration module, is connected in parallel with inversion module, for the high order harmonic component in the bucking voltage that filtering inversion module exports;
Described control circuit comprises the first DSP control module and the second DSP control module, input and the energy-storage module of described control circuit are connected in parallel, output is connected with inversion module, wherein, described first DSP control module is used for carrying out real-time examination and analysb to the voltage and current signal in energy-storage module circuit, described second DSP control module is used for the state of display voltage and current signal in real time, 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, and be connected with the electric power system that power supply and load form, output is connected with inversion module, for protecting dynamic electric voltage recovery device simultaneously.
Further, described inversion module adopts 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 supercapacitive cell comprises at least one ultracapacitor, and wherein, at least one ultracapacitor described is by forming array after series connection and/or parallel connection.
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 bypass switch, solid-state by-pass switch and grid-connected switch,
Described mechanical bypass switch is connected between power supply and load, is made up of mechanical switch;
Described grid-connected switch is connected between dynamic electric voltage recovery device and power supply and between dynamic electric voltage recovery device and load, is made up 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, is made up of controlled electronic power switch.
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, the electric power system of former limit access 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 ultracapacitor as the energy storage device of super capacitor dynamic electric voltage recovery device, by adopting two CSTR control module, described super capacitor dynamic electric voltage recovery device is controlled, wherein, first DSP control module is used for carrying out real-time examination and analysb to voltage and current signal, second DSP control module is used for showing 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 superposing with system voltage, make load side voltage unaffected.Thus, fast response time, storage volume are large, good energy-conserving effect, real-time beneficial effect to make super capacitor dynamic voltage recovery system have.
Accompanying drawing explanation
Exemplary embodiment of the present invention will be described in detail by referring to accompanying drawing below, the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present invention, 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, illustrate only 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. require high industry to the quality of power supply, such as: between the server of the heart in the calculation of can being installed in series and system power supply, prevent system voltage from disturbing and cause 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 system voltage from disturbing and cause sensitive load operation irregularity, such as: 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 system voltage to fluctuate, fall and cause semiconductor factory to produce a large amount of waste product and huge economic loss with flickering.
Figure 1 illustrates the first embodiment of the present invention.
Fig. 1 is the structure chart of super capacitor dynamic voltage recovery system according to a first embodiment of the present 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 supercapacitive cell 111 and DC energy storage unit 112, and described control circuit 14 comprises the first DSP control module 141 and the second DSP control module 142.
Described energy-storage module 11 comprises supercapacitive cell 111 and DC energy storage unit 112, and wherein, described supercapacitive cell 111 comprises at least one ultracapacitor, and wherein, at least one ultracapacitor described is by forming array after series connection and/or parallel connection.Described DC energy storage unit 112 is connected with power module by electronic switch, for storing the electric energy of DC form.Described energy-storage module 11 is for storing the electric energy compensated load, when control circuit 14 detects voltage distortion (mainly Voltage Drop and voltage rise), by voltage distortion information feed back to inversion module 12, inversion module 12 is responsive feedback information fast, and export an amplitude and the adjustable bucking voltage of phase angle, after superposing with system voltage, the voltage of proof load end is unaffected.Described inversion module 12 is for receiving the bucking voltage of energy-storage module 11 and outputting in filtration module 13.Described filtration module 13 is in parallel with inversion module 12, adopts LC filter, for the high order harmonic component in the bucking voltage that filtering inversion module 12 exports.The input of described control circuit 14 is connected with energy-storage module output, the output of control circuit 14 is connected with inversion module 12, this control circuit 14 specifically comprises the first DSP control module 141 and the second DSP control module 142, wherein, described first DSP control module 141 is for carrying out real-time examination and analysb to voltage and current signal, the state feedback of described voltage and current signal for showing the state of voltage and current signal in real time, and is given described inversion module 12 by described second DSP control module 142.The input of described protective circuit 15 is connected with filtration module 13; be connected with the electric power system that power supply and load form simultaneously; output is connected with inversion module 12, under working as system short-circuit or Overload, control inversion module 12 action, to protect dynamic electric voltage recovery device.
Fig. 2 is the operation principle schematic diagram of super capacitor dynamic voltage recovery system according to a first embodiment of the present invention.The mode that dynamic electric voltage recovery device of the present invention adopts phase voltage to compensate, the phase voltage of proof load side is normal and symmetrical in 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, the amplitude that often there will be three-phase voltage does not wait or the asymmetric situation of phase place, the DVR compensated based on phase voltage therefore can only be adopted to carry out each phase voltage amplitude of proof load side normal and symmetrical in phase place.Dynamic electric voltage recovery device is by the first DSP control module 141 real-time detecting system (or load) voltage of control module 14, when described first DSP control module detects that distortion occurs system voltage, the voltage distortion information detected is sent to the second DSP control module, described second DSP control module receiver voltage distortion information also shows in real time, simultaneously, first DSP control module by voltage distortion information feed back to inversion module, described inversion module responds the voltage distortion information received fast, and start compensation, produce an amplitude and the adjustable voltage of phase angle, after superposing with system voltage, make load side voltage unaffected.
The super capacitor dynamic voltage recovery system that the embodiment of the present invention provides, by adopting supercapacitive cell as the energy storage device of super capacitor dynamic electric voltage recovery device, makes described super capacitor dynamic voltage recovery system have larger storage volume; In addition, by DSP control module, real-time detecting system voltage, after voltage distortion being detected, inversion module will be fed back to, the quick responsive feedback information of inversion module, produce an amplitude and the adjustable bucking voltage of phase angle, after superposing with system voltage, make load side voltage unaffected.Thus, super capacitor dynamic voltage recovery system is made to have large, the real-time beneficial effect of fast response time, storage volume.
Figure 3 illustrates the second embodiment of the present invention.
Fig. 3 is the structure chart of super capacitor dynamic voltage recovery system according to a second embodiment of the present 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, mechanical bypass switch 26, grid-connected switch 27 and solid-state by-pass switch 28, described energy-storage module 21 comprises supercapacitive cell 211 and DC energy storage unit 212, described control circuit 24 comprises the first DSP control module 241 and the second DSP control module 242.
In the present embodiment, described energy-storage module 21 adopts supercapacitive cell 211 as energy storage device, because ultracapacitor monomer voltage is lower, many ultracapacitors are needed to be used as a unit for after array by series connection and/or parallel connection, to provide larger voltage, its capacity can reach 200KvA, can meet the demand of DVR larger voltage of instantaneous relase when voltage compensation.Therefore, using ultracapacitor as energy storage device, by alternative storage battery, the demand of development to power energy storing device of electric power system can be met.Have that charge/discharge rates is fast, environmentally safe, the advantage such as have extended cycle life, and the dynamic response characteristic of dynamic electric voltage recovery device is greatly improved.
Described inversion module 22 adopts 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 the dynamically controlled inverter of an amplitude, phase place, as a core link of dynamic electric energy compensation arrangement, inversion unit demand fulfillment two requirement of DVR: one, for reducing or avoiding the secondary pollution to electrical network, ensure that the output voltage waveforms quality of inversion module is good, effectively can suppress each harmonic; Two, for realizing the dynamic compensation to quality of voltage problem, inversion module will have good dynamic responding speed, when electrical network generation voltage failure, will respond rapidly the compensating instruction that control circuit sends.Adopt three individual event H bridges as the main circuit topological structure of inversion module in the present embodiment, have that connection type is simple, stable performance, easily to control and the feature at the bottom of cost of implement device, in addition, for reducing device volume cost and improving response speed, described DVR adopts online mode to be connected with electrical network.
Three single-phase full bridges are combined and are produced three-phase output by 3 single-phase H bridge construction, do not intercouple between three-phase, all relatively independent on circuit and control, therefore control the simplest.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 output filtering link are independent all 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 each phase of inversion module 22 of employing 3 single-phase H bridge construction are all separate, inversion module 22 is connected with power-supply system by filtration module 23, there will not be the problem causing power-supply system side phase fault or load-side phase fault because of conducting while brachium pontis power switch pipe different in inversion module 22, therefore adopt the low-voltage distribution system DVR of 3 single-phase H bridge inverter structure coupling transformer can be saved completely.
Described filtration module 23 adopts LC filter to carry out filtering high order harmonic component, voltage due to load needs pure sinusoidal voltage, in order to reduce or avoid 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.
Input and the energy-storage module 21 of described control circuit 24 are connected in parallel, and output is connected with inversion module 22, comprise the first DSP control module 241 and the second DSP control module 242.Wherein, described first DSP control module 241 is responsible for the generation of input, sampling, process, computing and driving pulse, when detecting that distortion occurs system voltage, by voltage distortion information feed back to inversion module 22, the rapid responsive feedback information of inversion module, exports bucking voltage.In addition, the signal that described first DSP control module 241 and the second DSP control module 242 realize the first and second DSP control module by dual port RAM is synchronous, exchanges data and coordinated operation, makes the second DSP module 242 can show voltage or current information in real time.By the collaborative work of the first and second DSP control module and dual port RAM, achieve the real-time analysis to sampled signal and display, have real-time good, fast operation, control precision is high, and configuration flexibility is good, the advantage that system extension ability is strong.
The input of described protective circuit 25 is connected with the output of filtration module 23, and be connected with super capacitor dynamic voltage recovery system major loop, output is connected with inversion module 22 simultaneously, protects under working as system short-circuit or Overload to major loop.The detection technique that the present embodiment adopts is compound PHASE-LOCKED LOOP PLL TECHNIQUE; the high accuracy to supply voltage can be completed, follow the tracks of fast; DVR can be made (to be less than 5ms) in a short period of time and to make response; when the first 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 that detects through control algolithm; produce the pulse signal for triggering 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 bypass switch 26 is connected between power supply and load, is made up of, for device bypass the wherein a kind of mechanical switch in circuit breaker or contactor.
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, be made up of a kind of mechanical switch in circuit breaker or contactor, for coordinating with described solid-state by-pass switch 28, when not affecting load and powering, realize the switching of dynamic electric voltage recovery device, to carry out turnaround of unit, maintenance.
The bypass be made up of described mechanical switch, play an important role in system maintenance, utilize mechanical switch, by DVR bypass, directly by system power supply, mechanical by-pass can be switched to when normal service is safeguarded, load is powered do not interrupt, and when DVR itself breaks down, then switch to mechanical by-pass, 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, and be made up of two-way controlled electronic power switch, described electronic power switch is IGBT or MOSFET, for quick bypass inversion module 22.For requiring higher quick response system, IGBT or MOSFET can be connected in parallel super capacitor Dynamic-Recovery device 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 runs, the bypass of DVR device, the circuit that electric current is consisted of two-way controllable electronic switch, can effectively improve DVR unit efficiency like this, reduces the power loss because device itself causes; When supply voltage occurs to fall temporarily, disconnect bypass fast and export bucking voltage rapidly.
In a preferred embodiment of the invention, described energy-storage module 21 can also with storage battery with the use of, be indicated by the dashed box in figure 3, when falling frequently appears in power-supply system, when described energy-storage module 21 frequent output bucking voltage 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 bypass switch, solid-state by-pass switch and grid-connected switch, make when power-supply system is normally run, the bypass of DVR device, electric current is by two-way controllable electronic switch circuit, can effectively improve DVR unit efficiency like this, reduce the power loss because device itself causes; When distortion occurs supply voltage, disconnect bypass fast and export bucking voltage rapidly, and when not affecting load supplying, inspection and maintenance can be carried out to system.
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 bypass switch 36, grid-connected switch 37 and solid-state by-pass switch 38; described energy-storage module 31 comprises supercapacitive cell 311 and DC energy storage unit 312, and described control circuit 34 comprises the first DSP control module 341 and the second DSP control module 342.
In the present embodiment; 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 bypass switch 36, grid-connected switch 37, solid-state by-pass switch 38 and the energy-storage module 21 that the dynamic electric voltage recovery device described in the second embodiment comprises, inversion module 22 and filtration module 23, control circuit 24, protective circuit 25, mechanical bypass switch 26, grid-connected switch 27, solid-state by-pass switch 28 are identical, do not repeat them here.
With the second embodiment unlike, embodiment adds coupling transformer, secondary and the filtration module of described coupling transformer are connected in parallel, the electric power system that former limit access power supply and load form, for improving the bucking voltage produced by described inversion module, and this bucking voltage is coupled in power circuit.The benefit done like this is super capacitor dynamic voltage recovery system of the present invention can be adopted in middle high-pressure electrical network system.
In the present embodiment, 3 single-phase H bridge construction is made up of 12 power switch pipes and diode pair, and the DC converting link of each phase and output filtering link are independent all separately.The former limit of three coupling transformers is connected to the output of three-phase H bridge inverter respectively by respective filter, 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 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, improve the bucking voltage produced by described inversion module, and this bucking voltage is coupled in power circuit, make described super capacitor dynamic electric voltage recovery device can not only in, use in low voltage electric power system, 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, exported by the energy-storage module comprising ultracapacitor and DC energy storage unit and compensate electric energy, described inversion module receives and compensates electric energy and output 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 CSTR control module as control system, real-time examination and analysb can be carried out to voltage and current signal by the first DSP control module, the state of voltage and current signal can be shown in real time by the second DSP control module.In addition; also adopt protective circuit; when protecting the major loop of dynamic electric voltage recovery device under system short-circuit or Overload; super capacitor dynamic voltage recovery system provided by the invention; can the change in voltage of Real-Time Monitoring load end; can to respond rapidly to the voltage distortion of load end, and the voltage that affords redress, to have that fast response time, storage volume are large, good energy-conserving effect, real-time, non-maintaining feature.
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, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of computer installation, thus they storages can be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module makings in them are become single integrated circuit module to realize.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 change and change.All do within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a super capacitor dynamic voltage recovery system, comprises 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 supercapacitive cell and DC energy storage unit, be connected with power supply by electronic switch, for storing compensation electric energy, described supercapacitive cell comprises at least one ultracapacitor, wherein, at least one ultracapacitor described is by forming array after series connection and/or parallel connection;
Described inversion module, is connected in parallel with described energy-storage module, for obtaining bucking voltage from energy-storage module and exporting;
Described filtration module, is connected in parallel with inversion module, for the high order harmonic component in the bucking voltage that filtering inversion module exports;
Described control circuit comprises the first DSP control module and the second DSP control module, input and the energy-storage module of described control circuit are connected in parallel, output is connected with inversion module, wherein, described first DSP control module is used for carrying out real-time examination and analysb to the voltage and current signal in energy-storage module circuit, described second DSP control module is used for the state of display voltage and current signal in real time, and give described inversion module by the state feedback of described voltage and current signal, the signal that described first DSP control module and the second DSP control module realize the first and second DSP control module by dual port RAM is synchronous, exchanges data and coordinated operation, when described first DSP control module detects that distortion occurs system voltage, the voltage distortion information detected is sent to the second DSP control module, described second DSP control module receiver voltage distortion information also shows in real time, simultaneously, first DSP control module by voltage distortion information feed back to inversion module, described inversion module responds the voltage distortion information received fast, and start compensation, produce an amplitude and the adjustable voltage of phase angle, after superposing with system voltage, make load side voltage unaffected,
Described protective circuit, the input of described protective circuit is connected with filtration module, and be connected with the electric power system that power supply and load form, output is connected with inversion module, for protecting dynamic electric voltage recovery device simultaneously.
2. super capacitor dynamic voltage recovery system according to claim 1, is characterized in that, described inversion module adopts 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 energy-storage module also comprises storage battery, for the electric energy that affords redress.
4. super capacitor dynamic voltage recovery system according to claim 1, is characterized in that, described dynamic electric voltage recovery device also comprises mechanical bypass switch, solid-state by-pass switch and grid-connected switch,
Described mechanical bypass switch is connected between power supply and load, is made up of mechanical switch;
Described grid-connected switch is connected between dynamic electric voltage recovery device and power supply and between dynamic electric voltage recovery device and load, is made up 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, is made up of controlled electronic power switch.
5. super capacitor dynamic voltage recovery system according to claim 4, is characterized in that, described mechanical switch is wherein a kind of in circuit breaker or contactor.
6. super capacitor dynamic voltage recovery system according to claim 4, is characterized in that, described electronic power switch is IGBT or MOSFET.
7. 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, the electric power system of former limit access power supply and load composition.
8. a power-supply system, is characterized in that, comprises as the super capacitor dynamic voltage recovery system in claim 1-7 as described in any one, and described power-supply system is phase three-wire three power-supply system or three-phase four-wire power system.
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