CN205921384U - Composite power source with emergency power source and active power filter function - Google Patents
Composite power source with emergency power source and active power filter function Download PDFInfo
- Publication number
- CN205921384U CN205921384U CN201620801987.1U CN201620801987U CN205921384U CN 205921384 U CN205921384 U CN 205921384U CN 201620801987 U CN201620801987 U CN 201620801987U CN 205921384 U CN205921384 U CN 205921384U
- Authority
- CN
- China
- Prior art keywords
- power source
- switch element
- inverter
- power supply
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
Landscapes
- Inverter Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model discloses a composite power source with emergency power source and active power filter function, including mains input terminal, load output terminal, charger, group battery, dc -to -ac converter and watch -dog, the charger converts the electric main to direct current and charges for the group battery, the inlet side of dc -to -ac converter passes through change over switch to be connected with main power source transmission line and group battery respectively, and its outlet side is all the way through the 2nd switch element intercommunication load output terminal, another sweetgum fruit is crossed LC filter circuit and is connected via the 3rd switch element main power source transmission line the 3rd switch element's the parallelly connected series branch that has resistance and fourth switch element in both ends, the watch -dog is at the higher harmonic of commercial power control inverter work just often at the active filter state, in the filtering electric wire netting, control inverter work is at the contravariant state when the commercial power is unusual, provides emergency power source for external load. Adopt this composite power source can reduce product cost when improving the electric energy quality.
Description
Technical field
This utility model belongs to emergency power supply technical field, specifically, is to be related to one kind with emergency power supply and to have
The composite power source of two kinds of functions of source filter.
Background technology
With social progress, the development of science and technology, increasing electrical equipment is to the quality powered, safety and reliability
Property proposes higher and higher requirement.These electrical equipments (as fire fighting device, elevator, base station etc.) on the one hand need to configure second
Road power supply can be that it provides emergency power supply in the unexpected power-off of electrical network, using electric equipment can one section of continuous service when
Between, it is to avoid electrical equipment out of service because of unexpected power-off may cause security incident occur；On the other hand, these electricity consumptions
Equipment can produce substantial amounts of harmonic wave during operation, and these harmonic waves are fed back to electrical network, and electrical network can be polluted, and affects civil power product
Matter, it is therefore desirable to configuration filter, filters out the higher hamonic wave in electrical network, to optimize city's electricity quality.
In order to meet the above-mentioned need for electricity of electrical equipment, existing solution is to take respectively for two aspect problems
Solution, divides and rule.For example, it is that electrical equipment is separately configured emergency power supply, provide for electrical equipment in grid cut-off
Uninterrupted power supply；Meanwhile, active filter is separately configured in electrical network, eliminates the higher hamonic wave in electrical network, improve power supply quality.
That is, a problem corresponds to a solving device, and resource can not be shared, and Resolving probiems limitation is very big, causes the serious of resource
Waste, and it is unsatisfactory to solve effect.
Content of the invention
The purpose of this utility model is to provide a kind of composite power source with emergency power supply and active power filtering function, in city
Electricity can use as active filter when normal, can use as emergency power supply in municipal power failure, can not only meet
The use demand of the uninterrupted power supply of electrical equipment, and power supply quality, reduces cost can be improved.
For solving above-mentioned technical problem, this utility model employs the following technical solutions and is achieved:
A kind of composite power source with emergency power supply and active power filtering function, including mains electricity input end, load outputs, fills
Electrical equipment, set of cells, inverter and watch-dog；Described mains electricity input end is used for connecting outside civil power；Described load outputs are used for
External load, and by the mains electricity input end described in main power transmission connection, connect in described main power transmission circuit
There is first switch element；Described charger is defeated by being converted into direct current energy by the electric main that described mains electricity input end is accessed
Go out；Described set of cells receives and stores the direct current energy of described charger output；The input side of described inverter is opened by switching
Close and be connected with described main power transmission circuit and set of cells respectively, it is described that its outlet side leads up to the connection of second switch element
Load outputs, separately lead up to the 3rd switch element and connect described main power transmission circuit；Its basis of described watch-dog
The unusual condition of described electric main controls described first switch element, second switch element, the 3rd switch element and switching
Switch on-off state, and control described inverter to be operated in active filter state when electric main is normal, in exchange city
It is operated in inverter mode during electrical anomaly.
In order to improve active power filtering effect further, the outlet side of described inverter is passed through the connection of lc filter circuit described
The 3rd switch element, be parallel with resistance and the series arm of the 4th switch element at the two ends of described 3rd switch element；Institute
State the switch controlling signal that the 4th switch element receives described watch-dog output, in lc filter circuit access system circuit first
Closure, described resistance access system circuit charges to the electric capacity in lc filter circuit.
Preferably, described lc filter circuit includes inductance and electric capacity, and described inductance and electric capacity are in series.
Further, described inverter is provided with the three-phase bridge being formed by connecting by six switching tubes；Described watch-dog
Export six road modulated pulse signals to transmit to the control pole of six switching tubes, during by the break-make that changes described six switching tubes
Sequence, to control described inverter to be operated in active filter state or inverter mode.
Preferably, described six switching tubes are six igbt power tubes with anti-parallel diodes, described igbt power
The grid of pipe receives the described modulated pulse signal of described watch-dog output.
Further, described electric main is the three-phase four-wire system Alternating Current Power Supply of 380v, comprises in described inverter
There are two electric capacity, after two described capacitances in series, be connected to the two ends of the DC side of three-phase bridge, the intermediate node of two electric capacity
Connect the zero line of described three-phase four-wire system Alternating Current Power Supply, described prison by first group of gating switch of setting in described switching switch
Control device detect described electric main normal when, control described first group of gating switch closure, by the work on described zero line
Electricity is streamed to described inverter, and controls described inverter to be operated in active filter state, in output and electric main
Higher hamonic wave is equal in magnitude, the compensation electric current of opposite in phase, transmits to described main power transmission circuit, to eliminate electric main
In higher hamonic wave.
Further, in described inverter, the two ends of the DC side of three-phase bridge are passed through to arrange in described switching switch
Second group of gating switch connect described set of cells；Described watch-dog, when city's electrical anomaly is detected, controls described second group of choosing
Open up pass closure, the direct current energy that set of cells is exported transmits to described inverter, and controls described inverter to be operated in inversion
State, inversion exports three-phase alternating-current powered, continues as external load by described load outputs and powers.
Preferably, by described inverter inversion output three-phase alternating-current powered via transformator carry out voltage transformation and
After filter capacitor filtering, by the described second switch element transmission of closure to described load outputs, and then bear for external
Carry power supply.
Further, the mains electricity input end in described composite power source is connected with the detection dress for gathering electric current, voltage
Put, described watch-dog monitors the unusual condition of described electric main according to the detection signal that described detection means exports.
Compared with prior art, advantage of the present utility model and good effect are: composite power source of the present utility model is integrated
Emergency power supply and two kinds of functions of active filter, can filter the height in civil power as active filter when civil power is normal
Subharmonic simultaneously can provide certain reactive-load compensation, to optimize civil power, improves power supply quality；In city's electrical anomaly, can be use
Electric loading provides the second road power supply, to meet the uninterrupted need for electricity of some loads.Composite power source of the present utility model should
Urgent telegram source and two kinds of functions of active power filtering integrate, and while meeting load supplying requirement, can eliminate load to electricity
The harmonic wave of net and idle impact, reduce product cost while improving the quality of power supply.
After the detailed description of this utility model embodiment is read in conjunction with the accompanying, other features of the present utility model and advantage
Will become clearer from.
Brief description
Fig. 1 is a kind of enforcement of the composite power source with emergency power supply and active power filtering function that this utility model is proposed
The system architecture diagram of example；
Fig. 2 is a kind of schematic block circuit diagram of embodiment of active converter and set of cells in Fig. 1；
Fig. 3 is a kind of circuit theory diagrams of embodiment of inverter in Fig. 2；
Fig. 4 is the fundamental diagram when civil power is normal for the active converter shown in Fig. 2；
Fig. 5 is the fundamental diagram in city's electrical anomaly for the active converter shown in Fig. 2.
Specific embodiment
Below in conjunction with the accompanying drawings specific embodiment of the present utility model is described in detail.
The composite power source of the present embodiment is directed to some electricity consumption load requests and configures the second road power supply and in load running process
In be also easy to produce harmonic wave, the problem that electrical network is polluted is it is proposed that a kind of brand-new power circuit topology structure is so that an electricity
Source device has emergency power supply and two kinds of functions of active power filtering concurrently, by sharing hardware resource, while improving power supply quality, reaches
Arrive the purpose of design reducing product cost.
As shown in figure 1, the composite power source of the present embodiment is mainly provided with mains electricity input end vin, load outputs vout, has
Source converter inv, lc filter circuit, set of cells bat and variable connector element km1, km2, mk3, km4.Wherein, civil power input
End vin is used for outside electric power network, incoming transport civil power, and the inside in composite power source, and described mains electricity input end vin can pass through
Main power transmission circuit is connected to load outputs vout via first switch element km1, when civil power is normal, by controlling the
One switch element km1 closure, will be transmitted to load outputs vout by the electric main that mains electricity input end vin accesses, enters
And pass through load outputs vout to the electricity consumption load supplying external with it.
In order to improve power supply quality, the present embodiment arranges active converter inv in described composite power source, normal in civil power
When, it is linked into the higher hamonic wave in the electric main of composite power source using active converter inv detection, and then generate and described height
Subharmonic is equal in magnitude, the compensation electric current of opposite in phase, transmits to described main power transmission circuit, in described electric main
Harmonic wave compensate and offset, and then reach the purpose filtering mains harmonics.
For the compensation electric current being exported by active converter inv, after being filtered processing via lc filter circuit,
Transmit again to described main power transmission circuit, to improve harmonic suppression effect.In order to ensure described lc filter circuit can have
Effect is run, and the present embodiment sets up resistance r on the basis of described lc filter circuit, as shown in figure 1, transporting for the first time in lc filter circuit
During row, by by described resistance r access system circuit, to guarantee that the electric capacity c in lc filter circuit puts into operation after fully charged.
Specifically, described lc filter circuit can be constituted in the way of using by inductance l and electric capacity c series connection, by described lc filtered electrical
Road is connected to described main power transmission circuit by the 3rd switch element km3, by described resistance r and the 4th switch element km4
It is connected in parallel on the two ends of described 3rd switch element km3 after series connection.When civil power is normal, and during described composite power source startup optimization, can
To control the 3rd switch element km3 to disconnect first, the 4th switch element km4 closure, charges to electric capacity c.Treat that electric capacity c is fully charged
Afterwards, control the 3rd switch element km3 closure, the 4th switch element km4 disconnects, and is shorted out resistance r, to reduce system power dissipation.
When utility power failure or appearance are abnormal, in order to provide emergency power supply, the present embodiment to external loading
Set of cells bat is set in described composite power source.When civil power is normal, charged for set of cells bat using electric main, storage electricity
Energy；In city's electrical anomaly, the electric energy of set of cells bat storage is supplied to active converter inv, inverse using active converter inv
Become the Alternating Current Power Supply needed for output electric loading, and then transmitted to described load outputs by stand-by power supply transmission line
Vout, continues as external load by load outputs vout and powers, thus when reaching Liao city electrical anomaly, being to be carried with electric loading
Purpose of design for emergency power supply.
Can be connected in described stand-by power supply transmission line second switch element km2, as shown in Figure 1.When civil power is normal
When, can be in the way of using controlling first switch element km1 closure, second switch element km2 to disconnect, by main power transmission circuit
Connect, be load supplying using electric main；And when municipal power failure or exception, can be using control first switch element
Km1 disconnects, the mode of second switch element km2 closure, stand-by power supply transmission line is connected, using the electricity of composite power source energy storage
Can be load supplying, play the effect of emergency power supply.
For the Alternating Current Power Supply exporting by active converter inv inversion, further blood pressure lowering can be carried out by transformator t
After conversion, then transmit to load outputs vout via the second switch element km2 of filter capacitor ce and closure, outer to meet
The electricity consumption connecing load requires.Described transformator t armature winding and active converter inv exchange can enter between outlet side
One step connects the 5th switch element km5, as shown in Figure 1.When civil power is normal, disconnected by controlling the 5th switch element km5, can
To avoid transmitting by the harmonic compensation current of active converter inv output to transformator t, by ensureing harmonic compensation current
Correct flow to, to guarantee that composite power source is operated in active filter state exactly, and then reach the design improving power grid quality
Purpose.
In the present embodiment, described switch element km1-km5 can have on-off action simultaneously from relay, controllable silicon etc.
Support that the switch block that high current is passed through is realized, the present embodiment does not carry out concrete restriction to this.
Fig. 2 is the circuit framework figure of described active converter inv, including charger, inverter, watch-dog and switching switch
kd.Wherein, charger connects main power transmission circuit, when civil power is normal, receives the exchange accessing by mains electricity input end vin
Civil power, and electric main is converted into unidirectional current, export to set of cells bat, be the charging accumulation of energy of set of cells bat.By inverter
Input side connects to switching switch kd, connects by switching switch kd is corresponding with main power transmission circuit and set of cells bat respectively.
When civil power is normal, control first group of gating switch kd1 closure in switching switch kd, second group of gating switch kd2 disconnects, will
The input side of inverter connects to main power transmission circuit, is inverter power supply using the electric current in main power transmission circuit.?
During city's electrical anomaly, first group of gating switch kd1 in switching switch kd is controlled to disconnect, second group of gating switch kd2 closure, will be inverse
The input side becoming device connects to set of cells bat, and the direct current energy using the output of set of cells bat is inverter power supply.Watch-dog root
According to the unusual condition of the electric main accessing, control the on off operating mode of two groups of gating switches kd1, kd2 in described switching switch kd,
And control described inverter to be operated in active filter state or inverter mode.
In the present embodiment, described two groups of gating switches kd1, kd2 can be mutual using two groups of IGCT or relay
Lock-switch is realized, and the present embodiment does not carry out concrete restriction to this.
In order that described inverter can be operated under active power filtering and inversion two states, the present embodiment proposes as figure
Circuit structure shown in 3, including the three-phase bridge being built by six switching tube k1-k6 and electric capacity c1, c2.In the present embodiment
In, described six switching tube k1-k6 preferably employ six igbt power tubes with anti-parallel diodes d1-d6.By two electricity
After resistance c1, c2 series connection, it is connected to the two ends of the DC side of three-phase bridge, that is, between 2 points of a, b in Fig. 3, a, b of described DC side
End connects by second group of gating switch kd2 in switching switch kd is corresponding with the positive and negative electrode of set of cells bat, with inversion shape
Under state, receive the DC bus-bar voltage that set of cells bat provides.Described electric main preferably employs the three-phase four-wire system exchange of 380v
Power supply ac380, that is, include three tunnel phase lines a, b, c and a road zero line pen.The intermediate node of two electric capacity c1, c2 is passed through switching
First group of gating switch kd1 in switch kd connects the zero line pen to three-phase four-wire system Alternating Current Power Supply ac380, in civil power just
Chang Shi, receives the operating current on zero line pen, and under the control of watch-dog, by three-phase bridge generation and electric main
Higher hamonic wave is equal in magnitude, the compensation electric current of opposite in phase, via the corresponding transmission of the intermediate node of the upper and lower bridge arm of each phase bridge
To three tunnel phase lines a, b of electric main, c, to filter mains harmonics, improve power supply quality.
With reference to Fig. 1-Fig. 3, the operation principle of the composite power source of the present embodiment is specifically addressed.
When composite power source startup optimization, if civil power is normal, passes through watch-dog output switch control signal, control first
Second switch element km2 and the 3rd switch element km3 disconnects, and controls first switch element km1 and the 4th switch element km4 to close
Close, resistance r is accessed lc filter circuit, charge to electric capacity c.According to the discharge and recharge time of electric capacity c, when suitable time delay is set
Between, control the 3rd switch element km3 timing closing, after electric capacity c is fully charged, close the 3rd described switch element km3, continue
And be shorted out resistance r, so that lc filter circuit normally runs.After the 3rd switch element km3 closure, the 4th switch can be controlled
Element km4 disconnects, and is filtered processing using the harmonic compensation current that lc filter circuit exports to inverter.Open the described 3rd
After closing element km3 closure, control first group of gating switch kd1 closure in switching switch kd by watch-dog, and export six tunnels
Modulated pulse signal, exports the control pole of six switching tubes to inverter, the grid of such as six igbt power tube k1-k6,
By adjusting the break-make sequential of six igbt power tube k1-k6 in inverter, to control inverter to be operated in active filter shape
State, and then generate and the higher hamonic wave compensation electric current equal in magnitude, opposite in phase in civil power, by the exchange output of inverter
Side is transmitted to lc filter circuit, and via lc filter circuit process after, be fed back to three tunnel phase lines of electric main, to play elimination
The purpose of the higher hamonic wave in electric power system, as shown in Figure 4.Interior during this period, electric main is converted into unidirectional current by charger,
For the charging accumulation of energy of set of cells bat.
During composite power source runs, if municipal power failure is detected or occurring abnormal, by watch-dog first
Control first switch element km1 and the 3rd switch element km3 to disconnect, and control second switch element km2 and the 5th switch element
Km5 closes, and connects stand-by power supply transmission line.Then, first group of gating switch in switching switch kd is controlled by watch-dog
Kd1 disconnects, second group of gating switch kd2 closure, and the electric energy using the storage of set of cells bat provides dc bus electricity for inverter
Pressure, by adjusting the break-make sequential of six igbt power tube k1-k6 in inverter, to control inverter to be operated in inverter mode,
And then DC bus-bar voltage is reverse into three-phase alternating voltage, via the 5th switch element km5, transformator t, filter capacitor ce with
And second switch element km2 transmits to load outputs vout, and then provide emergency power supply for external load, as shown in Figure 5.
If city power recovery is normal, first switch element km1 and the 3rd switch element km3 closure is controlled by watch-dog,
Second switch element km2 and the 5th switch element km5 disconnects, and controls first group of gating switch kd1 in switching switch kd to close
Close, second group of gating switch kd2 disconnects, and so that inverter is reworked in active filter state, using the friendship after harmonic compensation
Stream civil power is powered for external load.
For how, modulated pulse signal is exported by watch-dog, with control inverter be operated in active filter state or
Person's inverter mode, is known to the skilled person general knowledge, and therefore, the present embodiment here does not elaborate.
In the present embodiment, detection means can be respectively provided with the input side of composite power source and outlet side, for example, be used for
Detection alternating voltage and the instrumentation of alternating current, mains electricity input end vin and the load outputs with composite power source respectively
The corresponding connection of vout, by gathering the voltage and current of electric main, is exported to watch-dog with generating detection signal, then passes through
Watch-dog judges whether the electric main accessing is normal.In city's electrical anomaly, gathered via load outputs by detection means
The voltage and current of the Alternating Current Power Supply of vout output, is transmitted to watch-dog with generating detection signal, such that it is able to by watch-dog
The reversals of inverter are accurately controlled, then so that keeping steady by the Alternating Current Power Supply that load outputs vout exports
Fixed.
Emergency power supply and active filter are combined into a device so as to have emergency power supply and active filter by the present embodiment
The function of ripple device, works in active filter state when civil power is normal, works in emergency power supply state in municipal power failure, and
Enable the seamless switching of two kinds of working conditions, while ensureing as load normal power supply, reduce product cost.
Certainly, the above is only a kind of preferred implementation of the present utility model it is noted that for the art
Those of ordinary skill for, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of composite power source with emergency power supply and active power filtering function is it is characterised in that include:
Mains electricity input end, for connecting outside civil power；
Load outputs, for external load, and by the mains electricity input end described in main power transmission connection, in described master
It is in series with first switch element in power supply transmission line；
Charger, will be converted into direct current energy output by the electric main that described mains electricity input end is accessed；
Set of cells, receives and stores the direct current energy of described charger output；
Inverter, its input side passes through to switch to switch to be connected with described main power transmission circuit and set of cells respectively, its output
Side leads up to the described load outputs of second switch element connection, separately leads up to the 3rd switch element and connects described master
Power supply transmission line；
Watch-dog, its according to the unusual condition of described electric main control described first switch element, second switch element, the 3rd
Switch element and switching switch on-off state, and control described inverter to be operated in active power filtering when electric main is normal
Device state, is operated in inverter mode when electric main is abnormal.
2. the composite power source with emergency power supply and active power filtering function according to claim 1 is it is characterised in that described
The outlet side of inverter passes through lc filter circuit and connects the 3rd described switch element, at the two ends of described 3rd switch element simultaneously
It is associated with resistance and the series arm of the 4th switch element；Described 4th switch element receives the on-off control of described watch-dog output
Signal.
3. the composite power source with emergency power supply and active power filtering function according to claim 2 is it is characterised in that described
Lc filter circuit includes inductance and electric capacity, and described inductance and electric capacity are in series.
4. the composite power source with emergency power supply and active power filtering function according to claim 1 is it is characterised in that in institute
State and in inverter, be provided with the three-phase bridge being formed by connecting by six switching tubes；Described watch-dog output six road modulated pulse signal passes
Transport to the control pole of six switching tubes, by changing the break-make sequential of described six switching tubes, to control described inverter work
In active filter state or inverter mode.
5. the composite power source with emergency power supply and active power filtering function according to claim 4 is it is characterised in that described
Six switching tubes are six igbt power tubes with anti-parallel diodes, and the grid of described igbt power tube receives described monitoring
The described modulated pulse signal of device output.
6. the composite power source with emergency power supply and active power filtering function according to claim 4 is it is characterised in that described
Electric main is the three-phase four-wire system Alternating Current Power Supply of 380v, includes two electric capacity in described inverter, described two electricity
It is connected to the two ends of the DC side of three-phase bridge, the intermediate node of two electric capacity passes through setting in described switching switch after holding series connection
First group of gating switch connects the zero line of described three-phase four-wire system Alternating Current Power Supply, and described watch-dog is detecting described electric main
When normal, control described first group of gating switch closure, the operating current on described zero line is transmitted to described inverter, and controls
Make described inverter and be operated in active filter state.
7. the composite power source with emergency power supply and active power filtering function according to claim 6 is it is characterised in that in institute
State in inverter, the two ends of the DC side of three-phase bridge are described by second group of gating switch connection of setting in described switching switch
Set of cells；Described watch-dog, when city's electrical anomaly is detected, controls described second group of gating switch closure, set of cells is exported
Direct current energy transmits to described inverter, and controls described inverter to be operated in inverter mode, and inversion exports three-phase alternating-current powered.
8. the composite power source with emergency power supply and active power filtering function according to claim 7 is it is characterised in that pass through
The three-phase alternating-current powered of described inverter inversion output carries out, after voltage transformation and filter capacitor filtering, passing through via transformator
The described second switch element transmission of closure, to described load outputs, is that external load is powered.
9. the composite power source with emergency power supply and active power filtering function according to any one of claim 1 to 8, it is special
Levy and be, be connected with the detection means for gathering electric current, voltage, described watch-dog in the mains electricity input end of described composite power source
Monitor the unusual condition of described electric main according to the detection signal of described detection means output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801987.1U CN205921384U (en) | 2016-07-28 | 2016-07-28 | Composite power source with emergency power source and active power filter function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801987.1U CN205921384U (en) | 2016-07-28 | 2016-07-28 | Composite power source with emergency power source and active power filter function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205921384U true CN205921384U (en) | 2017-02-01 |
Family
ID=57873452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620801987.1U Active CN205921384U (en) | 2016-07-28 | 2016-07-28 | Composite power source with emergency power source and active power filter function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205921384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560605A (en) * | 2019-01-25 | 2019-04-02 | 莱芜钢铁集团有限公司 | A kind of blast furnace emergency backup power supply control device |
-
2016
- 2016-07-28 CN CN201620801987.1U patent/CN205921384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560605A (en) * | 2019-01-25 | 2019-04-02 | 莱芜钢铁集团有限公司 | A kind of blast furnace emergency backup power supply control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207234419U (en) | Looped network of DC power framework based on multiport residents energy source router | |
| CN106159951B (en) | A kind of composite power source with emergency power supply and active power filtering function | |
| CN103915856B (en) | A kind of base station is grid-connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN105207208B (en) | Realize power flowcontrol and the circuit of small current grounding fault active compensation extinguishing arc simultaneously | |
| CN105119262B (en) | Realize that power quality adjusts the circuit with the active extinguishing arc of small current grounding fault simultaneously | |
| CN103580264B (en) | Direct current micro-grid system with power supplied in looped network form | |
| CN106329572A (en) | Hybrid energy storage converter device and control method | |
| CN103280826A (en) | Inverter grid connection security detection method and inverter grid connection circuit | |
| CN206195602U (en) | UPS power with active power filter function | |
| CN202033465U (en) | Electric grid simulated electric closure test system for testing photovoltaic grid-connected inverter | |
| CN103023344A (en) | Universal smart grid power electronic device | |
| CN106130035A (en) | A kind of uninterrupted power source with reactive-load compensation and active power filtering function | |
| CN102957196A (en) | Inverter and charger integrated modularization H-bridge cascade stage UPS (uninterrupted power supply) single/three-phase system | |
| CN107681674A (en) | Power adjusting device for elevator | |
| CN102969920A (en) | Bidirectional inverter with dual operating modes | |
| CN107359644A (en) | A kind of microgrid interface topology apparatus | |
| CN102624016A (en) | Bidirectional energy flowing flow battery energy storage grid connection device and control method thereof | |
| CN206697944U (en) | A kind of three-phase imbalance adjusting means | |
| CN205945075U (en) | Uninterrupted power source with reactive compensation and active power filter function | |
| CN204559217U (en) | A kind of Novel direct-current power system | |
| CN204515032U (en) | A kind of proving installation of energy feedback unit | |
| CN205921384U (en) | Composite power source with emergency power source and active power filter function | |
| CN106253462A (en) | There is the improvement ups system of filter function | |
| CN107453326A (en) | The protection device and micro-capacitance sensor of a kind of grounding transformer | |
| CN104393610A (en) | PCS system and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |