CN204216662U - Ups static switch control circuit - Google Patents
Ups static switch control circuit Download PDFInfo
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- CN204216662U CN204216662U CN201420711807.1U CN201420711807U CN204216662U CN 204216662 U CN204216662 U CN 204216662U CN 201420711807 U CN201420711807 U CN 201420711807U CN 204216662 U CN204216662 U CN 204216662U
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- static switch
- ups
- failure detector
- detector circuit
- control circuit
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Abstract
UPS static switch control circuit, relate to the control technology field of UPS static switch, it comprises for sending drive singal to described static switch to drive the master controller of described static switch, also comprise failure detector circuit and submaster controller, failure detector circuit test side is connected with master controller, output is connected with submaster controller, after failure detector circuit detects the fault of master controller, fault-signal is sent to submaster controller, submaster controller receives the backward described static switch of this fault-signal and sends drive singal to drive described static switch, thus make UPS work in bypass mode.
Description
Technical field
The invention relates to the control technology field of UPS static switch, is specifically related to a kind of UPS static switch control circuit.
Background technology
In recent years along with power consumption equipment requires more and more higher to the Performance And Reliability of power supply, UPS(uninterrupted power supply) be widely used.For ensureing the reliability of UPS itself, UPS is provided with bypass usually, when UPS breaks down, is just switched to bypass and powers to power consumption equipment, to prevent the power failure to power consumption equipment.The switching of UPS between the mode of operation such as inverter mode and bypass mode is realized by the switching of static switch, described static switch generally includes the bypass SCR(Silicon Controlled Rectifier for switching to bypass mode, controllable silicon) and inversion SCR for switching to inverter mode, the reliable switching of the static switch of UPS is more crucial, has vital impact to the reliability of UPS.
Along with the development of power electronic technology, controllable silicon very mature and reliable itself.In the practical application of UPS, the fault of static switch is generally that drive singal causes extremely.Static switch drive circuit is generally designed to bypass SCR drive singal and inversion SCR drive singal interlock circuit, ensures the handoff-security between bypass mode and inverter mode.During UPS static switch control circuit abnormal for the master controller that sends bypass SCR drive singal and inversion SCR drive singal, bypass SCR drive singal and inversion SCR drive singal also there will be exception, namely both are all high level or low level, what now bypass SCR and inversion SCR received is all low level, therefore bypass SCR and inversion SCR all disconnects, so, although bypass SCR and inversion SCR conducting simultaneously can be avoided thus the situation appearance of damage UPS, but ups system no-output can be caused, load power down, thus cause economic loss to user.
Summary of the invention
For the above-mentioned technical problem that prior art exists, the invention provides a kind of UPS static switch control circuit, it can when bypass SCR drive singal and inversion SCR drive singal exception, make UPS be switched to bypass mode work, avoid ups system because of bypass SCR drive singal and inversion SCR drive singal no-output extremely.
For achieving the above object, the invention provides following technical scheme.
UPS static switch control circuit, comprise for sending drive singal to described static switch to drive the master controller of described static switch, also comprise failure detector circuit and submaster controller, failure detector circuit test side is connected with master controller, output is connected with submaster controller, after failure detector circuit detects the fault of master controller, fault-signal is sent to submaster controller, submaster controller receives the backward described static switch of this fault-signal and sends drive singal to drive described static switch, thus makes UPS work in bypass mode.
Wherein, failure detector circuit comprises optocoupler IC1 and NPN type triode Q1, optocoupler IC1 input external power supply, another input as the test side of failure detector circuit, an output head grounding, another output one road external power supply, the base stage of another road connecting triode Q1, triode Q1 grounded emitter, collector electrode one road external power supply, another road is as the output of failure detector circuit.
Wherein, failure detector circuit also comprises malfunction indicator lamp LED1, and malfunction indicator lamp LED1 is connected between the base stage of optocoupler IC1 and triode Q1.
Wherein, failure detector circuit also comprises electric capacity C1 and resistance R5, between the base stage being connected to triode Q1 after electric capacity C1 and resistance R5 parallel connection and emitter.
Wherein, master controller is the DSP of UPS, and submaster controller is the CPLD of UPS.
The beneficial effect of the invention is: arrange failure detector circuit and submaster controller, when failure detector circuit detects that master controller breaks down, namely fault-signal is sent to submaster controller, submaster controller is taken over master controller thus and is sent drive singal to static switch, inversion SCR is disconnected, bypass SCR conducting, thus UPS is switched to bypass mode work on, in this process, the power supply of ups system to load is not interrupted.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the UPS static switch control circuit of the invention.
Reference numeral comprises: failure detector circuit 1.
Embodiment
Below in conjunction with specific embodiment, the invention is elaborated.
As shown in Figure 1, the UPS static switch control circuit of the present embodiment comprises master controller U1, failure detector circuit 1 and submaster controller U2, wherein master controller U1 is the DSP of UPS, submaster controller U2 is the CPLD(Complex Programmable Logic Device of UPS, CPLD).When master controller U1 breaks down, 2 pin of optocoupler IC1 become high level, cut-off is become from conducting between 3 pin of optocoupler IC1 and 4 pin, resistance R3, resistance R4, malfunction indicator lamp LED1 and resistance R5 forms loop, malfunction indicator lamp LED1 is bright, the base stage of NPN type triode Q1 is now high level, triode Q1 conducting, the collector electrode of triode Q1 sends low level to submaster controller U2, after submaster controller U2 receives this low level, drive singal BAP_PWM is sent to bypass SCR, bypass SCR conducting thus, the mode of operation of UPS switches to bypass mode thus, ups system is powered to the load by bypass continuous.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not the restriction to the invention protection range; although done to explain to the invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the invention or equivalent replacement, and not depart from essence and the scope of the invention technical scheme.
Claims (5)
1.UPS static switch control circuit, comprise for sending drive singal to described static switch to drive the master controller of described static switch, it is characterized in that, also comprise failure detector circuit and submaster controller, failure detector circuit test side is connected with master controller, output is connected with submaster controller, after failure detector circuit detects the fault of master controller, fault-signal is sent to submaster controller, submaster controller receives the backward described static switch of this fault-signal and sends drive singal to drive described static switch, thus makes UPS work in bypass mode.
2. UPS static switch control circuit according to claim 1, it is characterized in that, failure detector circuit comprises optocoupler IC1 and NPN type triode Q1, optocoupler IC1 input external power supply, and another input is as the test side of failure detector circuit, an output head grounding, another output one road external power supply, the base stage of another road connecting triode Q1, triode Q1 grounded emitter, collector electrode one road external power supply, another road is as the output of failure detector circuit.
3. UPS static switch control circuit according to claim 2, it is characterized in that, failure detector circuit also comprises malfunction indicator lamp LED1, and malfunction indicator lamp LED1 is connected between the base stage of optocoupler IC1 and triode Q1.
4. UPS static switch control circuit according to claim 2, is characterized in that, failure detector circuit also comprises electric capacity C1 and resistance R5, between the base stage being connected to triode Q1 after electric capacity C1 and resistance R5 parallel connection and emitter.
5. UPS static switch control circuit according to claim 1, is characterized in that, master controller is the DSP of UPS, and submaster controller is the CPLD of UPS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711807.1U CN204216662U (en) | 2014-11-25 | 2014-11-25 | Ups static switch control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711807.1U CN204216662U (en) | 2014-11-25 | 2014-11-25 | Ups static switch control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216662U true CN204216662U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420711807.1U Active CN204216662U (en) | 2014-11-25 | 2014-11-25 | Ups static switch control circuit |
Country Status (1)
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| CN (1) | CN204216662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259516A (en) * | 2015-11-11 | 2016-01-20 | 漳州科华技术有限责任公司 | A back-up type UPS input switch abnormity detection apparatus |
| CN106061023A (en) * | 2016-07-08 | 2016-10-26 | 浙江众合科技股份有限公司 | Novel indicating lamp control circuit |
-
2014
- 2014-11-25 CN CN201420711807.1U patent/CN204216662U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259516A (en) * | 2015-11-11 | 2016-01-20 | 漳州科华技术有限责任公司 | A back-up type UPS input switch abnormity detection apparatus |
| CN105259516B (en) * | 2015-11-11 | 2018-02-13 | 漳州科华技术有限责任公司 | A kind of off-line UPS input switch abnormal detector |
| CN106061023A (en) * | 2016-07-08 | 2016-10-26 | 浙江众合科技股份有限公司 | Novel indicating lamp control circuit |
| CN106061023B (en) * | 2016-07-08 | 2018-05-08 | 浙江众合科技股份有限公司 | New indicating lamp control circuit |
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