CN206135419U - Dynamic voltage restorer based on switch matrix - Google Patents
Dynamic voltage restorer based on switch matrix Download PDFInfo
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- CN206135419U CN206135419U CN201621005273.6U CN201621005273U CN206135419U CN 206135419 U CN206135419 U CN 206135419U CN 201621005273 U CN201621005273 U CN 201621005273U CN 206135419 U CN206135419 U CN 206135419U
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- Prior art keywords
- voltage
- transverter
- switch matrix
- wave filter
- dvr
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- 239000011159 matrix material Substances 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 claims description 14
- 238000011161 development Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 3
- 230000018109 developmental process Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a dynamic voltage restorer based on switch matrix which characterized in that: dynamic voltage restorer's a looks, b congruence c take a fancy to, include transverter, wave filter and isolation transformer respectively, and the transverter is connected with the wave filter, and the wave filter is connected with isolation transformer, on the corresponding circuit of isolation transformer series connection between system and load, the transverter includes switch matrix, the power electronic switch of being connected respectively between the three phase line that switch matrix includes the system and two outgoing line of DVR transverter. The utility model discloses a main circuit of the switch matrix dynamic formed voltage recover ware that the power electronic device constitutes, direct through exchanging when voltage falls exchanging the transform and realizing having saved direct current energy storage link to the compensation of load voltage, reduced the energy loss of dynamic voltage recover ware, it is simple and convenient to control the realization when using simultaneously, and these developments voltage recover utensil has important popularization and application to be worth.
Description
Technical field
The utility model is related to dynamic electric voltage recovery device equipment technical field, more particularly to a kind of based on the dynamic of switch matrix
State voltage restorer.
Background technology
Problem of Voltage Temporary-Drop is acknowledged as most frequent in power distribution network, the power quality problem of impact most serious.With height
Development of new techniques, sensitive load is more and more in power distribution network, and the impact that voltage dip is caused is also increasing.Dynamic voltage regulation
Device (Dynamic Voltage Regulator, DVR) is to administer one of maximally efficient means of Problem of Voltage Temporary-Drop, is also cried
State voltage restorer.
Existing DVR circuits generally use the topological structure of AC-DC-exchange, twice the conversion of form of energy
The transverter for consisting of electronic power switch is completed, and will unavoidably cause larger energy loss, reduces the electricity of DVR
Energy service efficiency, the presence as well as DC link increased control and the complexity protected.Therefore, if one kind can be designed
Directly the DVR of AC-AC converter, can save DC link, reduce the active power loss of DVR itself, improve the electric energy of DVR
Service efficiency, reduce DVR realizes difficulty, for there is the practical level for improving DVR important practical to be worth.
Utility model content
In order to solve problems of the prior art, the dynamic electric voltage that the utility model is provided based on switch matrix is extensive
Multiple device.
Technical solutions of the utility model provide a kind of dynamic electric voltage recovery device based on switch matrix, dynamic electric voltage recovery device
A phases, b phases and c phases in, respectively including transverter, wave filter and isolating transformer, transverter is connected with wave filter, wave filter
It is connected with isolating transformer, isolating transformer is connected in the respective lines between system and load；The transverter includes opening
Matrix is closed, is connected respectively between the three-phase line and two outlet lines of DVR transverters of the switch matrix including system
Electronic power switch.
And, the line identification of system three-phase is ' a ', ' b ', ' c ', transverter output in dynamic electric voltage recovery device phase
Line identification is ' p ', ' n ',
Electronic power switch between circuit ' a ' and ' p ' is designated Sap,
Electronic power switch between circuit ' b ' and ' p ' is designated Sbp,
Electronic power switch between circuit ' c ' and ' p ' is designated Scp,
Electronic power switch between circuit ' a ' and ' n ' is designated San,
Electronic power switch between circuit ' b ' and ' n ' is designated Sbn,
Electronic power switch between circuit ' c ' and ' n ' is designated Scn。
And, electronic power switch uses insulated gate bipolar transistor.
The beneficial effects of the utility model are：Directly Voltage Drop compensation is carried out by AC-AC converter, eliminated straight
Stream link, reduces the active power loss of DVR itself, improves the electric energy service efficiency of DVR, and the realization for reducing DVR is difficult
Degree, with important market value.
Description of the drawings
Fig. 1 is the system wiring figure of the utility model embodiment.
Fig. 2 is the single-phase inverters structure chart of the utility model embodiment.
Specific embodiment
With reference to the accompanying drawings and examples, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, the utility model embodiment provides a kind of topology of the dynamic electric voltage recovery device based on switch matrix
Structure.Dotted line inframe is a kind of dynamic electric voltage recovery device based on switch matrix of the present utility model in Fig. 1, employs three-phase only
The topological structure of vertical control, illustrates below by taking a phase as an example.
The each phases of DVR include transverter, wave filter and isolating transformer.In a phase of DVR, system three-phase line point
Do not access transverter, transverter is connected with wave filter, and wave filter is connected with isolating transformer, isolating transformer be connected on system with
Between load on the circuit of a corresponding phase.In such as Fig. 1, in a phases of DVR, system three-phase line (use ' a ', ' b ', ' c ' mark) connect
Enter the transverter of DVRa phases, transverter is connected to the wave filter of a phases, and wave filter is by inductance LfWith electric capacity CfConstitute；Wave filter connects
To the isolating transformer T of a phases, the isolating transformer T of a phases is connected on a phase lines between system and load.DVR carries out electricity
It is highly developed at present that pressure falls the principle of compensation, i.e., when system occurs Voltage Drop, DVR is by isolating transformer to circuit
Seal in a voltage, it is ensured that load voltage remains normal level.
It is connected between each and each of system three-phase line of each transverter output end two lines road in DVR
One electronic power switch, each phase transverters of DVR need 6 electronic power switches.
A kind of single-phase converter structure figure of dynamic electric voltage recovery device based on switch matrix shown in Figure 2, system
Three-phase line (using ' a ', ' b ', ' c ' mark) with DVR transverter outlet lines (using ' p ', ' n ' marks) each between,
An electronic power switch is connected with, electronic power switch can use IGBT (Insulated Gate Bipolar
Transistor, insulated gate bipolar transistor).Electric capacity CfConnect with the auxiliary winding of isolating transformer T, inductance LfOne end connect
Connect the auxiliary winding of isolating transformer T, one end connection line ' n '.Electronic power switch S between circuit ' a ' and ' p 'apMark,
Other marks are similar, circuit ' b ' and the electronic power switch S between ' p 'bpMark, the electric power between circuit ' c ' and ' p ' is electric
Son switch uses ScpMark, the electronic power switch S between circuit ' a ' and ' n 'anMark, the electric power between circuit ' b ' and ' n '
Electronic switch SbnMark, the electronic power switch S between circuit ' c ' and ' n 'cnMark.DVR transverter outlet lines ' p '
And the voltage between ' n ' is vpn, by being switched on or off for 6 electronic power switches of control so that vpnEqual to reference voltage
vpn,ref, you can realize the compensation to load voltage when there is Voltage Drop.It should be noted that reference voltage vpn,refMeter
Calculation is currently ripe method；Additionally, inverter output voltage vpnIt is not voltage that single-phase transformer is injected in circuit, but has
By the no-load voltage ratio for rationally arranging filter parameter and single-phase transformer when body is used, single-phase transformer can be caused to be injected into circuit
In voltage and vpnIdentical, the setting of filter parameter and single-phase transformer no-load voltage ratio realizes it being current ripe method.
The utility model only provides the Curve guide impeller of hardware aspect and claims, and associated voltage falls compensation control, filter
Ripple device parameter and the setting of single-phase transformer no-load voltage ratio etc. can be realized by those skilled in the art using prior art.
For the sake of ease of implementation, the dynamic electric voltage recovery device that embodiment provided based on switch matrix is introduced worked
Journey is as follows：
During offset voltage is fallen, transverter has 6 kinds of feasible switching modes, every kind of feasible switching mode
The exportable certain voltage of lower transverter, according to output voltage reference value and exportable electricity under every kind of feasible switching mode
The difference of pressure realizes the control of switch tube selecting feasible switching mode, DVR be it is exportable required for offset voltage.
6 feasible switching modes of switching tube are as follows：
Pattern 1：SapAnd SbnConducting, other switching tube shut-offs, vpn,1=va-vb；
Pattern 2：SbpAnd ScnConducting, other switching tube shut-offs, vpn,2=vb-vc；
Pattern 3：ScpAnd SanConducting, other switching tube shut-offs, vpn,3=vc-va；
Pattern 4：SanAnd SbpConducting, other switching tube shut-offs, vpn,4=vb-va；
Pattern 5：SbnAnd ScpConducting, other switching tube shut-offs, vpn,5=vc-vb；
Pattern 6：ScnAnd SapConducting, other switching tube shut-offs, vpn,6=va-vc；
va,vb,vcRespectively system line ' a ', ' b ', the voltage-to-ground of ' c '.
Calculate vpn,refWith v under above-mentioned various patternspn,kDifference：
Δvk=vpn,ref-vpn,kK=1,2,3,4,5,6 (1)
Find Δ vkMinimum one of absolute value, according to value selecting switch pattern k of its subscript k, according in pattern k
Setting carries out the control of electronic power switch, you can realize the control to single-phase inverters, it is ensured that output voltage is equal to reference value
vpn,ref。
The utility model provides switch matrix, and the change of current in dynamic electric voltage recovery device is realized using switch matrix during specific works
The main circuit of device, eliminates DC link, reduces the active power loss of DVR itself, and the electric energy that improve DVR uses effect
Rate, reduce DVR realizes difficulty, and the dynamic electric voltage recovery device has important application value.
Above example is only for illustration of the utility model, rather than to restriction of the present utility model, relevant technical field
Technical staff, in the case of without departing from spirit and scope of the present utility model, various conversion or modification can also be made, because
The technical scheme of this all equivalent also should belong within category of the present utility model, should be limited by each claim.
Claims (2)
1. a kind of dynamic electric voltage recovery device based on switch matrix, it is characterised in that：The a phases of dynamic electric voltage recovery device, b phases and c
Xiang Zhong, respectively including transverter, wave filter and isolating transformer, transverter is connected with wave filter, wave filter and isolating transformer
Connection, isolating transformer is connected in the respective lines between system and load；The transverter includes switch matrix, described to open
Matrix is closed including the electronic power switch connected respectively between the three-phase line and two outlet lines of DVR transverters of system.
2. the dynamic electric voltage recovery device of switch matrix is based on according to claim 1, it is characterised in that：Electronic power switch makes
Use insulated gate bipolar transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621005273.6U CN206135419U (en) | 2016-08-30 | 2016-08-30 | Dynamic voltage restorer based on switch matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621005273.6U CN206135419U (en) | 2016-08-30 | 2016-08-30 | Dynamic voltage restorer based on switch matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135419U true CN206135419U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621005273.6U Expired - Fee Related CN206135419U (en) | 2016-08-30 | 2016-08-30 | Dynamic voltage restorer based on switch matrix |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181262A (en) * | 2017-06-23 | 2017-09-19 | 上海能传电气有限公司 | A kind of dynamic electric voltage recovery device and its method of work for intersecting power taking |
-
2016
- 2016-08-30 CN CN201621005273.6U patent/CN206135419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181262A (en) * | 2017-06-23 | 2017-09-19 | 上海能传电气有限公司 | A kind of dynamic electric voltage recovery device and its method of work for intersecting power taking |
| CN107181262B (en) * | 2017-06-23 | 2023-06-09 | 上海能传电气有限公司 | Dynamic voltage recovery device for cross power taking and working method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20190830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |