CN202103434U - DVR based on super capacitor - Google Patents
DVR based on super capacitor Download PDFInfo
- Publication number
- CN202103434U CN202103434U CN2011202008940U CN201120200894U CN202103434U CN 202103434 U CN202103434 U CN 202103434U CN 2011202008940 U CN2011202008940 U CN 2011202008940U CN 201120200894 U CN201120200894 U CN 201120200894U CN 202103434 U CN202103434 U CN 202103434U
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- energy
- ultracapacitor
- electronic switch
- inverter unit
- recovery device
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Abstract
The utility model discloses a DVR (Dynamic Voltage Restorer) based on a super capacitor. The DVR comprises an energy-storing system including the super capacitor and a DC energy-storing unit, a charge module used for charging the super capacitor and the DC energy-storing unit, an inverter unit used for outputting compensation voltage, and a voltage-boosting filtering system including a transformer and a filter, wherein the energy-storing system is parallelly connected between the charge module and the inverter unit; the DC energy-storing unit is parallelly connected with the super capacitor via an electronic switch; and the energy-storing system is parallelly connected to the DC side of the inverter unit via the other electronic switch. The DVR provided by the utility model has high speed in response, large energy-storing capacity, long work time, convenience in maintenance, simplicity in operation, and high cost performance.
Description
Technical field
The utility model relates to a kind of power equipment, especially relates to a kind of dynamic electric voltage recovery device based on ultracapacitor.
Background technology
Along with the Chinese society constant development of economy; A large amount of precision equipments and instrument come into operation; And conflicting with it be that the power supply quality of China's electrical network is not high; Line voltage moment rises sharply, rapid drawdown and flickering frequently take place, to the running precision and the very big threat of formation safe in utilization of these precision equipments and instrument.In fact, even in mains supply quality countries and regions relatively preferably, owing to there is the influence of factors such as load impact, non-linear, asymmetric load, various transient electric-energy quality problems still frequently take place.
Dynamic electric voltage recovery device (Dynamic Voltage Restorer, be called for short DVR) is a kind of device of novel solution user power quality problem.This device fast with the bucking voltage major loop that is added to, reaches the purpose of " recovery " voltage when detecting electric voltage dropping, be the at present effective and the most economic solution electric voltage dropping and the method for rising problem.
Energy-storage units provides active power to load during voltage dip, must have certain energy storage and function exchange capacity, and general energy storage device is mainly storage battery, and the sharpest edges of storage battery are that cost is lower, uses simple.But the energy conversion efficiency of storage battery is low, and bigger power can not be provided, the powerful requirement of abrupt release in the time of can not satisfying DVR in real time and carry out voltage compensation; And the life-span of storage battery is shorter, and maintenance cost is high, and adopts heavy metal or Acidity of Aikalinity raw material more, is unfavorable for environmental protection.
The utility model content
The utility model purpose is to provide a kind of dynamic electric voltage recovery device based on ultracapacitor, and it has the advantages that the response time is fast, the operating time is long and cost performance is high.
The purpose of the utility model is to realize through following technical scheme:
A kind of dynamic electric voltage recovery device based on ultracapacitor, it comprises:
One energy-storage system, said energy-storage system is made up of ultracapacitor and dc energy storage unit, and said dc energy storage unit is used to store direct current form electric energy;
One charging module, said charging module are used for ultracapacitor and dc energy storage unit are charged;
One inverter unit, said inverter unit is used to export bucking voltage;
And, be used for dynamic electric voltage recovery device is inserted the electric power system of power module and sensitive load composition by the filtering system that boosts that transformer and filter are formed;
Said energy-storage system is connected in parallel between charging module and the inverter unit, and said dc energy storage unit is parallelly connected with ultracapacitor through an electronic switch, and said energy-storage system is connected in parallel on the DC side of inverter unit through another electronic switch.
Especially; Said charging module comprises a single-phase rectification bridge of being made up of four power diode D1, D2, D3, D4; Filter of forming by inductance L 2 and capacitor C 2 and three electronic switch K2, K4, K5; Said capacitor C 2 is connected in parallel on the DC side of single-phase rectification bridge, and said inductance L 2 is connected in the charge circuit, and said electronic switch K5 is connected between charging module and the energy-storage system; As charge initiation and excision switch, said electronic switch K2, K4 are series at the positive pole of ultracapacitor C1 and storage battery U1 respectively.
Especially; Said energy-storage system is made up of ultracapacitor C1, storage battery U1, two electronic switch K1, K3; Said ultracapacitor C1 and storage battery U1 are through electronic switch K3 parallel connection; Be used to control the main discharge power supply, and said energy-storage system is connected in parallel on the DC side of inverter unit through electronic switch K1.
Especially, a half-bridge converter forming by four switch transistor T D1, TD2, TD3, TD4 of said inverter unit.
Especially; The said filtering system that boosts comprises transformer TG and a capacitor C 3 and the filter that inductance L 1 is formed; Parallelly connected behind the output series inductance L1 of said inverter unit with capacitor C 3; The secondary shunt capacitance C3 of said transformer TG, former edge joint go into the electric power system of power module and sensitive load composition, are used to realize the recovery voltage function of dynamic electric voltage recovery device.
The beneficial effect of the utility model does, not only response speed is fast, stored energy capacitance is big, the operating time is long for said dynamic electric voltage recovery device dynamic electric voltage recovery device based on ultracapacitor; And safeguard convenient, simple to operate, cost performance is high.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the system block diagrams of the utility model based on the dynamic electric voltage recovery device of ultracapacitor;
Fig. 2 is the circuit diagram of the utility model based on the dynamic electric voltage recovery device of ultracapacitor.
Among the figure:
1, power module; 2, sensitive load; 3, charging module; 4, dc energy storage unit; 5, ultracapacitor; 6, inverter unit; 7, filter; 8, transformer.
Embodiment
Please with reference to shown in Figure 1; Fig. 1 is the system block diagrams of the utility model based on the dynamic electric voltage recovery device of ultracapacitor; Said dynamic electric voltage recovery device based on ultracapacitor comprises the energy-storage system of being made up of ultracapacitor 5 and dc energy storage unit 4, and said dc energy storage unit 4 is used to store direct current form electric energy; Be used for charging module 3 that ultracapacitor 5 and dc energy storage unit 4 are charged; Be used to export the inverter unit 6 of bucking voltage, and, be used for dynamic electric voltage recovery device is inserted the electric power system of power module 1 and sensitive load 2 compositions by the filtering system that boosts that transformer 8 and filter 7 are formed; Said energy-storage system is connected in parallel between charging module 3 and the inverter unit 6, and said dc energy storage unit 4 is parallelly connected with ultracapacitor 5 through an electronic switch, and said energy-storage system is connected in parallel on the DC side of inverter unit 6 through another electronic switch.
Please with reference to shown in Figure 2, Fig. 2 is the circuit diagram of the utility model based on the dynamic electric voltage recovery device of ultracapacitor.In present embodiment; Said charging module comprises a single-phase rectification bridge of being made up of four power diode D1, D2, D3, D4; Filter of forming by inductance L 2 and capacitor C 2 and three electronic switch K2, K4, K5, said capacitor C 2 is connected in parallel on the DC side of single-phase rectification bridge, and said inductance L 2 is connected in the charge circuit; Said electronic switch K5 is connected between charging module and the energy-storage system; As charge initiation and excision switch, said electronic switch K2, K4 are series at the positive pole of ultracapacitor C1 and storage battery U1 respectively, be used to control charging module energy-storage system is charged.
Said energy-storage system is made up of ultracapacitor C1, storage battery U1, two electronic switch K1, K3; Said ultracapacitor C1 and storage battery U1 are through electronic switch K3 parallel connection; Be used to control the main discharge power supply, and said energy-storage system is connected in parallel on the DC side of inverter unit through electronic switch K1.
The half-bridge converter that said inverter unit is made up of four switch transistor T D1, TD2, TD3, TD4.
The said filtering system that boosts comprises transformer TG and a capacitor C 3 and the filter that inductance L 1 is formed; Parallelly connected behind the output series inductance L1 of said inverter unit with capacitor C 3; The secondary shunt capacitance C3 of said transformer TG; Former edge joint is gone into the electric power system of power module and load R composition, is used to realize the recovery voltage function of dynamic electric voltage recovery device.
During work, by electronic switch K2, K4, K5 closure, through rectification filtering circuit ultracapacitor C1 and storage battery U1 are charged respectively earlier, when two energy-storage travelling wave tube terminal voltages reached rated value, K2, K4, K5 broke off, and cut off charge circuit.
End is pressed a certain limit value if the terminal voltage of storage battery U1 exceeds ultracapacitor C1, and electronic switch K3 is closed, and normal condition electronic switch K3, K1 break off.When falling temporarily appears in system voltage, send enabling signal, K1 is closed; Earlier to the inverter unit power supply, if the time of falling temporarily is shorter, ultracapacitor C1 holds the not obvious compensation effect that influences of drops by ultracapacitor C1; Then only by ultracapacitor C1 power supply, K3 keeps breaking off.
If it is longer to fall the time temporarily, or it is frequent to fall number of times temporarily, and ultracapacitor C1 end drops is more, can not realize that load R voltage recovers fully, and then K3 is closed, by storage battery U1 the inverter unit DC power supply is provided, and simultaneously ultracapacitor C1 is charged.Continue to continue if fall temporarily, storage battery U1 is not enough to provide recovery voltage, then sends stopping signal by the DVR main circuit, excision load R.
Not only response speed is fast, stored energy capacitance is big, the operating time is long for above-mentioned dynamic electric voltage recovery device dynamic electric voltage recovery device based on ultracapacitor; And safeguard convenient, simple to operate, cost performance is high.
Claims (5)
1. dynamic electric voltage recovery device based on ultracapacitor, it is characterized in that: comprise an energy-storage system, said energy-storage system is made up of ultracapacitor and dc energy storage unit, and said dc energy storage unit is used to store direct current form electric energy;
One charging module, said charging module are used for ultracapacitor and dc energy storage unit are charged;
One inverter unit, said inverter unit is used to export bucking voltage;
And, be used for dynamic electric voltage recovery device is inserted the electric power system of power module and sensitive load composition by the filtering system that boosts that transformer and filter are formed;
Said energy-storage system is connected in parallel between charging module and the inverter unit, and said dc energy storage unit is parallelly connected with ultracapacitor through an electronic switch, and said energy-storage system is connected in parallel on the DC side of inverter unit through another electronic switch.
2. the dynamic electric voltage recovery device based on ultracapacitor according to claim 1; It is characterized in that: said charging module comprises a single-phase rectification bridge of being made up of four power diode D1, D2, D3, D4; Filter of forming by inductance L 2 and capacitor C 2 and three electronic switch K2, K4, K5; Said capacitor C 2 is connected in parallel on the DC side of single-phase rectification bridge, and said inductance L 2 is connected in the charge circuit, and said electronic switch K5 is connected between charging module and the energy-storage system; As charge initiation and excision switch, said electronic switch K2, K4 are series at the positive pole of ultracapacitor C1 and storage battery U1 respectively.
3. the dynamic electric voltage recovery device based on ultracapacitor according to claim 1; It is characterized in that: said energy-storage system is made up of ultracapacitor C1, storage battery U1, two electronic switch K1, K3; Said ultracapacitor C1 and storage battery U1 are through electronic switch K3 parallel connection, and said energy-storage system is connected in parallel on the DC side of inverter unit through electronic switch K1.
4. the dynamic electric voltage recovery device based on ultracapacitor according to claim 1 is characterized in that: the half-bridge converter that said inverter unit is made up of four switch transistor T D1, TD2, TD3, TD4.
5. the dynamic electric voltage recovery device based on ultracapacitor according to claim 1; It is characterized in that: the said filtering system that boosts comprises transformer TG and a capacitor C 3 and the filter that inductance L 1 is formed; Parallelly connected behind the output series inductance L1 of said inverter unit with capacitor C 3; The secondary shunt capacitance C3 of said transformer TG, former edge joint go into the electric power system of power module and load R composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202008940U CN202103434U (en) | 2011-06-15 | 2011-06-15 | DVR based on super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202008940U CN202103434U (en) | 2011-06-15 | 2011-06-15 | DVR based on super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103434U true CN202103434U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202008940U Expired - Fee Related CN202103434U (en) | 2011-06-15 | 2011-06-15 | DVR based on super capacitor |
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| Country | Link |
|---|---|
| CN (1) | CN202103434U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222927A (en) * | 2011-06-15 | 2011-10-19 | 无锡双力电力设备有限公司 | Dynamic voltage restorer based on super-capacitor |
| CN106684876A (en) * | 2017-01-21 | 2017-05-17 | 河北郎尊电力科技有限公司 | Tail-end low-voltage compensation device of rural power grid |
| CN107134786A (en) * | 2017-06-13 | 2017-09-05 | 南京南瑞继保电气有限公司 | A kind of voltage-source type adjusting means and its control method |
-
2011
- 2011-06-15 CN CN2011202008940U patent/CN202103434U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222927A (en) * | 2011-06-15 | 2011-10-19 | 无锡双力电力设备有限公司 | Dynamic voltage restorer based on super-capacitor |
| CN106684876A (en) * | 2017-01-21 | 2017-05-17 | 河北郎尊电力科技有限公司 | Tail-end low-voltage compensation device of rural power grid |
| CN107134786A (en) * | 2017-06-13 | 2017-09-05 | 南京南瑞继保电气有限公司 | A kind of voltage-source type adjusting means and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150615 |
|
| EXPY | Termination of patent right or utility model |