CN201639343U - Modular parallel power UPS device - Google Patents
Modular parallel power UPS device Download PDFInfo
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- CN201639343U CN201639343U CN2009202065842U CN200920206584U CN201639343U CN 201639343 U CN201639343 U CN 201639343U CN 2009202065842 U CN2009202065842 U CN 2009202065842U CN 200920206584 U CN200920206584 U CN 200920206584U CN 201639343 U CN201639343 U CN 201639343U
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- 238000013519 translation Methods 0.000 claims description 8
- 238000012937 correction Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses a modular parallel power UPS device, which is characterized in that the traditional single-unit UPS system is changed into a UPS system with multiple modules running in parallel. The whole device integrating the technologies of digital control, high-frequency switching, and automatic current-sharing parallel operation has rapid response and stable running, and can exactly meet the requirements of transformer substations and power plants in power systems for high reliability and rapid on-line repair and replacement of UPS devices, thereby achieving the suitability for application and popularization.
Description
Technical field
The utility model relates to a kind of modular parallel electric power UPS device.
Background technology
The power grid security economical operation is the important goal that the needs of electric power system reach, therefore need constantly to improve and improve the automatization level of electric power system, and for equipment such as the microcomputer in the assurance system, VQC, RTU and transmitter can be safe and reliable operation, promptly need UPS as the power supply guarantee.
In order to guarantee under the situation of accident ac voltage losing; relay protection fault oscillograph, protective device printer, combine the needs that when the device of uses AC power such as background devices, communication equipment can satisfy accident maintenance, continue operation, thereby need electric power special use ups power be set in transformer station and power to the said equipment.
The circuit structure of the special-purpose UPS of conventional electric power is as shown in Figure 1: civil power just often, alternating current is isolated through the input isolating transformer, gives inverter power supply behind the rectifying and wave-filtering; If exchange the input outage, then the direct current cabinet power supply provided for oneself of electric power system is given inverter power supply through the check diode, isolates the back through the high-frequency isolation transformer in the inverter again and powers to important load; If direct current cabinet outage, inverter overload or fault then automatically switch to bypass power supply by static switch.
The conventional electric power ups system can't be realized parallel connection, what be connected on by a UPS in the bypass of another UPS that (be so-called string also) realized is not truly redundancy, and be difficult to realize that many UPS are with simultaneously carries, its volume is big, Heavy Weight, efficient are low, a little less than the antijamming capability, can't accomplish that the zero-time switches.
The utility model content
In view of this, the utility model provides a kind of modular parallel electric power UPS device, by adopting module output in parallel and HF switch technology, has improved the load capacity of system, and volume is little, in light weight simultaneously, power density is high, flexible configuration.
The purpose of this utility model provides a kind of modular parallel electric power UPS device, comprise the UPS modular converter, the contactless diverter switch of high speed is exported bus with exchanging, the ac input end I and the external ac power source of the contactless diverter switch of described high speed link, the ac output end of the contactless diverter switch of described high speed with exchange output bus link, described UPS modular converter is at least two and parallel with one another, described UPS modular converter includes prime rectifying part and back level inversion part, described back level inversion part electrically connects with the prime rectifying part, the ac input end of described prime rectifying part all inserts external ac power source, the direct-flow input end of described back grade inversion part all inserts external dc power, links with outside bus behind the ac input end II of the contactless diverter switch of ac output end access high speed of described back level inversion part.
Further, described modular parallel electric power UPS device also comprises control unit, and the signal output part of described control unit links with the control end of UPS modular converter and the contactless diverter switch of high speed respectively;
Further, the prime rectifying part of described UPS modular converter comprises EMI filter circuit, rectification circuit and the APFC circuit of power factor correction that connects successively;
Further, the back level inversion of described UPS modular converter partly comprises DC/DC isolated variable circuit, DC/AC orthogonal translation circuit and the dc-battery voltage isolation circuit that connects successively;
Further, be connected with the civil power tracking circuit between described DC/AC orthogonal translation circuit and the dc-battery voltage isolation circuit, the ac input end and the external ac power source of described civil power tracking circuit link;
Further, described modular parallel electric power UPS device also comprises isolating transformer, and described external ac power source links by the ac input end of isolating transformer and UPS modular converter.
The beneficial effects of the utility model are:
The utility model is the ups system that traditional unit ups system is become the multimode parallel running, package unit comprehensively adopts digital Control Technology, HF switch technology and autonomous equalizing current and machine technology, its reaction speed is fast, operate steadily, modular construction can realize convenient on-the-spot efficiently online repair and replacement, the fail safe and the reliability of system also are greatly improved, also have the little and lightweight characteristics of volume simultaneously, meet very much power system transformer substation, power plant UPS device high reliability, the requirement of on-line maintenance replacing fast.
Other advantages of the present utility model, target, to set forth in the following description to a certain extent with feature, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following specification and claims.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is a conventional electric power ups system structural representation;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a UPS modular converter internal circuit connection diagram.
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail. Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
As shown in Figure 2, Modular parallel power UPS device of the present utility model, comprise the UPS modular converter, high speed No-contact switch switch 2 is exported bus 3 with exchanging, ac input end I and the bypass AC power 5 of high speed No-contact switch switch 2 link, the ac output end of high speed No-contact switch switch 2 with exchange output bus 3 link, in the present embodiment, the UPS modular converter is two, be UPS modular converter I and UPS modular converter II parallel with one another, UPS modular converter I, II includes prime rectifying part 11 and rear level Converting Unit 12, rear level Converting Unit 12 electrically connects with prime rectifying part 11, the ac input end of prime rectifying part 11 inserts external ac power source 4, the direct-flow input end of rear level Converting Unit 12 all inserts external dc power 6, in the present embodiment, dc source adopts the cell apparatus power supply, the ac output end of rear level Converting Unit 12 all inserts the ac input end II of high speed No-contact switch switch 2, links by high speed No-contact switch switch 2 and outside output bus 3.
For ease of whole UPS device is controlled, Modular parallel power UPS device also comprises control module, and the signal output part of control module links with the control end of UPS modular converter and high speed No-contact switch switch 2 respectively.
As shown in Figure 3, wherein, the prime rectifying part 11 of UPS modular converter comprises EMI filter circuit 111, rectification circuit 112 and the APFC circuit of power factor correction 113 that connects successively.
Embodiment
EMI filter circuit 111 should meet the requirement of Electromagnetic Compatibility as suppressing the significant element that power lines disturb, and must be bi-directional RF filtering: on the one hand, can suppress the interference from electrical network, reduce even eliminate harm to module; On the other hand, also can suppress the interference of high-frequency switching power supply module self to electrical network.Typical single-phase electromagnetic interface filter mainly is made up of EMI common-mode inductor, X electric capacity and Y electric capacity.
Traditional diode rectifier circuit can produce a large amount of harmonic wave and idle, and power factor only can reach 0.5～0.7, and total harmonic distortion is up to 100%～150%, and the severe contamination electrical network becomes the electrical network public hazards.In order to raise the efficiency, reduce interference to electrical network, must adopt power factor correction (Power Factor Correction, PFC) technology.
UPS modular converter of the present utility model adopts Active Power Factor Correction Technology (APFC), power factor height 0.99, and total harmonic distortion is less than 5%.And the AC-input voltage of APFC circuit after than rectification is stabilized to 275VDC, is higher than the input voltage (comprising even charging voltage) of battery, having under the civil power situation, and electric power UPS modular converter does not take battery resource, fully by mains-supplied.
In addition, the back level inversion part 12 of UPS modular converter comprises DC/DC isolated variable circuit 121, DC/AC orthogonal translation circuit 122 and the dc-battery voltage isolation circuit 123 that connects successively.
DC/DC isolated variable circuit 121 adopts advanced LLC series resonance soft switch technique, realizes the ZVS no-voltage exploitation of the former limit power MOS pipe under the full load condition and the ZCS Zero Current Switch of secondary high-frequency rectification diode, the efficient height.
In the present embodiment, this circuit mainly contains two effects:
1. the prime DC input voitage is changed to the output of 380V direct current, is used for back level DC/AC and exchanges variation;
2. realize isolating (being the isolation between dc-battery and the output).
Full-bridge SPWM high-frequency inversion technology is adopted in the DC/AC conversion of DC/AC orthogonal translation circuit 122, the 380V direct current is passed through the SPWM pulse modulation after LC filter output 220VAC/50Hz exchanges, and The whole control adopts the DSP digital control technology to realize.Be connected with civil power tracking circuit 124 between DC/AC orthogonal translation circuit 122 and the dc-battery voltage isolation circuit 123, the ac input end and the external ac power source of civil power tracking circuit 124 link.
Under no bypass (civil power) input condition, the 220V/50Hz alternating current of DC/AC orthogonal translation circuit 122 independent outputting standards; Having under bypass (civil power) input condition, following the tracks of bypass output 220V/50Hz alternating current.
Because the special-purpose UPS device of electric power is not joined backup battery separately, and the battery of common DC system, so the input of UPS device must be isolated dc bus dc bus, output.This isolation realizes by two aspects:
1. exchange the isolation of input and battery
Modular parallel electric power UPS device also comprises isolating transformer 7, and external ac power source 4 links by the ac input end of isolating transformer 7 with the UPS modular converter, realizes exchanging the isolation of input and battery.
Battery and exchange output isolation
Battery is realized by the DC/DC isolated variable circuit of UPS modular converter inside with the isolation that exchanges output.
The utility model and traditional electric power UPS device comparison have following outstanding advantage:
1. electrical isolation is safe and reliable; The parallel operation autonomous equalizing current, number of modules in parallel is more;
2. adopt the warm swap structure, system maintenance is simple;
3. electric power UPS module adopts the civil power Alternating Current Power Supply fully exchanging input just often, does not take battery resource; Can form system easily, its construction standard is reliable, can form the AC and DC power-supply system with direct current cabinet, shares resources such as battery pack, monitoring, and realizes unified management.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. modular parallel electric power UPS device, comprise the UPS modular converter, the contactless diverter switch of high speed is exported bus with exchanging, the ac input end I and the external ac power source of the contactless diverter switch of described high speed link, the ac output end of the contactless diverter switch of described high speed with exchange output bus link, it is characterized in that: described UPS modular converter is at least two and parallel with one another, described UPS modular converter includes prime rectifying part and back level inversion part, described back level inversion part electrically connects with the prime rectifying part, the ac input end of described prime rectifying part all inserts external ac power source, the direct-flow input end of described back grade inversion part all inserts external dc power, links with outside bus behind the ac input end II of the contactless diverter switch of ac output end access high speed of described back level inversion part.
2. modular parallel electric power UPS device according to claim 1, it is characterized in that: described modular parallel electric power UPS device also comprises control unit, and the signal output part of described control unit links with the control end of UPS modular converter and the contactless diverter switch of high speed respectively.
3. modular parallel electric power UPS device according to claim 2 is characterized in that: the prime rectifying part of described UPS modular converter comprises EMI filter circuit, rectification circuit and the APFC circuit of power factor correction that connects successively.
4. modular parallel electric power UPS device according to claim 3 is characterized in that: the back level inversion of described UPS modular converter partly comprises DC/DC isolated variable circuit, DC/AC orthogonal translation circuit and the dc-battery voltage isolation circuit that connects successively.
5. modular parallel electric power UPS device according to claim 4, it is characterized in that: be connected with the civil power tracking circuit between described DC/AC orthogonal translation circuit and the dc-battery voltage isolation circuit, the ac input end and the external ac power source of described civil power tracking circuit link.
6. modular parallel electric power UPS device according to claim 5, it is characterized in that: described modular parallel electric power UPS device also comprises isolating transformer, and described external ac power source links by the ac input end of isolating transformer and UPS modular converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065842U CN201639343U (en) | 2009-09-30 | 2009-09-30 | Modular parallel power UPS device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202065842U CN201639343U (en) | 2009-09-30 | 2009-09-30 | Modular parallel power UPS device |
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| CN201639343U true CN201639343U (en) | 2010-11-17 |
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| CN2009202065842U Expired - Lifetime CN201639343U (en) | 2009-09-30 | 2009-09-30 | Modular parallel power UPS device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649685A (en) * | 2018-05-25 | 2018-10-12 | 郑州云海信息技术有限公司 | A kind of battery sharing ups system and method for supplying power to |
| CN108964186A (en) * | 2018-07-24 | 2018-12-07 | 华南理工大学 | The design method of modular power applied to the flying robot for carrying redundant mechanical arm |
-
2009
- 2009-09-30 CN CN2009202065842U patent/CN201639343U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649685A (en) * | 2018-05-25 | 2018-10-12 | 郑州云海信息技术有限公司 | A kind of battery sharing ups system and method for supplying power to |
| CN108964186A (en) * | 2018-07-24 | 2018-12-07 | 华南理工大学 | The design method of modular power applied to the flying robot for carrying redundant mechanical arm |
| CN108964186B (en) * | 2018-07-24 | 2021-01-19 | 华南理工大学 | Design method of modular power supply applied to flying robot with redundant mechanical arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING ELECTRIC POWER CORP. MAINTENANCE BRANCH Free format text: FORMER OWNER: CHONGQING ELECTRIC POWER CORP. GRID MAINTENANCE BRANCH COMPANY Effective date: 20121119 Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121119 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400015 YUZHONG, CHONGQING TO: 400039 DADUKOU, CHONGQING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121119 Address after: 400039 No. 92 Torch Road, Erlang hi tech Zone, Chongqing hi tech Development Zone Patentee after: Chongqing Electric Power Corporation Maintenance Branch Patentee after: State Grid Corporation of China Address before: 400015 No. 75 Renmin Road, Yuzhong District, Chongqing Patentee before: Electrical Network Maintenance Branch of Chongqing Electric Power Corporation |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |