CN202918043U - UPS working circuit - Google Patents
UPS working circuit Download PDFInfo
- Publication number
- CN202918043U CN202918043U CN 201220621178 CN201220621178U CN202918043U CN 202918043 U CN202918043 U CN 202918043U CN 201220621178 CN201220621178 CN 201220621178 CN 201220621178 U CN201220621178 U CN 201220621178U CN 202918043 U CN202918043 U CN 202918043U
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- CN
- China
- Prior art keywords
- ups
- working circuit
- battery
- utility
- converter
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a UPS (Uninterrupted Power Supply) working circuit. The UPS working circuit is characterized in that a UPS is not provided with a battery; one end of the UPS is connected with an AC power grid; and circuit breaker is arranged between the UPS and the AC power grid. At the same time, a connection terminal of the UPS and the AC power grid is connected with a connection terminal of a rectifier and an inverter of a converter through an isolating DC-DC. The isolating DC-DC is also connected with a low-voltage ride through logic controller. The UPS working circuit provided by the utility model has an advantage that the battery of the UPS is saved and a bus capacitor of the converter is utilized directly as a battery, so that the normal working of the converter is guaranteed.
Description
Technical field
Circuit when the utility model relates to a kind of UPS work.
Technical background
It mainly is when low voltage crossing that wind-force generating converter uses the purpose of UPS, and UPS can for control board and the power supply of switch device, guarantee the normal operation of current transformer.But because ambient temperature requires as-40 ℃～+ 60 ℃ in the current transformer rack, requiring UPS can be normal operation in-40 ℃～+ 60 ℃ in temperature, (according to standard: YD/T799-2002), so the battery of UPS inside can not satisfy the requirement of operational environment and the lead-acid battery operating temperature range of UPS inside is-15 ℃～+ 45 ℃.
The utility model content
It is a kind of when low voltage crossing that the purpose of this utility model is to provide, and UPS can be control board and the power supply of switch device of current transformer, guarantees the normal operation of current transformer, and can satisfy under-40 ℃～+ 60 ℃ environment and work.
Technical solutions of the utility model: a kind of UPS operating circuit, it is characterized in that not charged pool of described UPS self, the one end is connected with AC network, is provided with circuit breaker (K1) between the two; Simultaneously, UPS links to each other with the rectifier of current transformer and the link of inverter by isolated form DC-DC with the link of AC network; Described isolated form DC-DC also links to each other with the low-voltage crossing logic control.
Advantage of the present utility model: abandon using UPS from charged pool, directly utilize the bus capacitor of current transformer to serve as battery, thereby guarantee the normal operation of current transformer.
Description of drawings
Fig. 1 is fundamental diagram of the present utility model.
Among the figure, the 1st, current transformer, the 2nd, UPS.
Embodiment
A kind of UPS operating circuit is characterized in that not charged pool of described UPS self as shown in Figure 1, and the one end is connected with AC network, is provided with circuit breaker K1 between the two; Simultaneously, UPS links to each other with the rectifier of current transformer 1 and the link of inverter by isolated form DC-DC with the link of AC network; Described isolated form DC-DC also links to each other with the low-voltage crossing logic control.
During normal operation, circuit breaker S1 is in normally closed, is directly powered to UPS by the AC network input.When low-voltage crossing occurs when, isolated form DC-DC module voltage output enable, circuit breaker S1 disconnects.Namely directly pass through isolated form DC-DC module converts by bus capacitor this moment, output voltage directly enters the input side of UPS, kept the normal operation of UPS also namely to guarantee the normal power supply of current transformer control power supply, the energy that pours in bus capacitor during the low-voltage crossing has been put in the pond, has reduced the load of chopper module.When power system restoration was normal, DC-DC module voltage output enable was forbidden, circuit breaker S1 closure, and UPS continues by AC network input power supply.
Claims (1)
1. a UPS operating circuit is characterized in that not charged pool of described UPS self, and the one end is connected with AC network, is provided with circuit breaker (K1) between the two; Simultaneously, UPS links to each other with the rectifier of current transformer and the link of inverter by isolated form DC-DC with the link of AC network; Described isolated form DC-DC also links to each other with the low-voltage crossing logic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621178 CN202918043U (en) | 2012-11-22 | 2012-11-22 | UPS working circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621178 CN202918043U (en) | 2012-11-22 | 2012-11-22 | UPS working circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202918043U true CN202918043U (en) | 2013-05-01 |
Family
ID=48166319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220621178 Expired - Fee Related CN202918043U (en) | 2012-11-22 | 2012-11-22 | UPS working circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202918043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767841A (en) * | 2018-06-13 | 2018-11-06 | 南京南瑞继保电气有限公司 | A kind of energy-storage units separate type current transformer and control method |
-
2012
- 2012-11-22 CN CN 201220621178 patent/CN202918043U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767841A (en) * | 2018-06-13 | 2018-11-06 | 南京南瑞继保电气有限公司 | A kind of energy-storage units separate type current transformer and control method |
| CN108767841B (en) * | 2018-06-13 | 2021-10-01 | 南京南瑞继保电气有限公司 | Energy storage unit separated type converter and 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: 20130501 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |