CN102789307A - Energy-saving design method and device for restraining instant impact current of high-power fan - Google Patents
Energy-saving design method and device for restraining instant impact current of high-power fan Download PDFInfo
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- CN102789307A CN102789307A CN2012102197890A CN201210219789A CN102789307A CN 102789307 A CN102789307 A CN 102789307A CN 2012102197890 A CN2012102197890 A CN 2012102197890A CN 201210219789 A CN201210219789 A CN 201210219789A CN 102789307 A CN102789307 A CN 102789307A
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Abstract
The invention provides an energy-saving design method and a device for restraining the instant impact current of a high-power fan, which are designed from three aspects that firstly, the large current is restrained by only a power resistor to avoid the over-current protection of a direct-current power supply; secondly, when the large current is restrained, if the power resistor is still connected with a circuit in series, the power resistor self necessarily generates a lot of power loss, and the large pressure drop can also be generated, so that the normal work of the fan and the stability of a control panel can be affected, therefore, a relay is selected to bypass the power resistor; and thirdly, thirdly, as the relay is closed after the fan is normally started, i.e. the delay time from the power on of the relay to the closing of the relay is larger than the instant current duration, the requirement is satisfied through designing a time delay control unit.
Description
Technical field
The present invention relates to the Computer Applied Technology field; Specifically a kind of energy-saving design method and device that suppresses powerful fan moment impact electric current; The present invention mainly is the centrally connected power supply for Rack level rack; Having replaced traditional server must have own power limitations, has also broken through the limitation of cable power supply simultaneously.
Background technology
Nearly 2 years, China developed swift and violent in the supercomputer technology field.TOP is in the first five in up-to-date global supercomputer TOP seniority among brothers and sisters in 2011, and China has just occupied two seats (being respectively " No. one, the Milky Way " and " nebula " that is number three that ranks the first).This two covers supercomputer has all adopted water-cooled rack refrigeration solution.The actual motion effect proves that this scheme refrigeration is good, efficiently solves the heat dissipation problem of high heat density blade server.Air circulation system adopts positive air-supply, the form of back side air draft in the rack.The water-cooled rack adopts water as cold-producing medium, energy-conserving and environment-protective on the one hand, and reliability is high, can effectively solve traditional air-conditioning and concentrate problems such as the existing heat radiation of air-supply is inhomogeneous; Refrigerating capacity is big on the other hand, can solve the common air-conditioning cooling system the high heat density heat dissipation problem that can't realize, and refrigerating efficiency is high, blade server is built in the airtight cabinet, can reduce the machine room noise greatly.
During work, cabinet fan absorbs the hot blast that discharge at the server back side, sends into the coil pipe total-heat exchanger system from return air inlet and cools off, and again cold wind is delivered to the server front from air outlet, pours into blade server, and circulation successively is to reach the heat sinking function to server.Therefore wind direction for a change generally uses the bigger turbofan of power.Turbofan can produce a bigger dash current at powered on moment, in the time of generally can reaching fan and normally move 30 times, thus cause the power supply overcurrent protection, and then refrigeration system can't normally be opened.
The present invention is in order to suppress the circuit that powerful fan designs at system's powered on moment generation large impact electric current, to have obtained good effect through actual verification.
Summary of the invention
The purpose of this invention is to provide a kind of energy-saving design method and device that suppresses powerful fan moment impact electric current.
The objective of the invention is to realize in the following manner, design at first is to suppress big electric current from three aspects, avoids the dc source overcurrent protection, and this function only needs a power resistor to realize; Secondly after big electric current is suppressed; If power resistor still is series in the circuit, himself certainly leads to a large amount of power attenuations, and can produce very big pressure drop; This can influence the operate as normal of fan and the stability of control panel, therefore selects for use relay that power resistor is bypassed; The 3rd be exactly relay closes will fan is normal start after, that is to say from system's this section of relay closes delay time that powers on to be greater than the time that dash current continues, therefore design time-delay control module is realized this requirement, concrete steps are following:
The direct supply 48V of system powers on, and under the metering function of power resistor, fan normally starts, and simultaneously big electric capacity is in charging, when the electric capacity voltage reaches the threshold voltage of metal-oxide-semiconductor, and metal-oxide-semiconductor conducting, and then relay closes, after this, system's operate as normal.
The energy saver that suppresses powerful fan moment impact electric current; Comprise relay J, switch JK, capacitor C, resistance R 1, R2, R3, metal-oxide-semiconductor Q1, connector JC1, JC2, wherein connector JC1 connects the 48V direct current, connector JC2 wind-receiving fan; The 2 pin ground connection of connector JC1, connector JC2 wherein; Between 1 pin of resistance R 1 serial connection connector JC1, connector JC2, resistance R 2, capacitor C 1 pass and are connected between 1 pin and ground wire of connector JC1, the linking point of 1 pin of metal-oxide-semiconductor Q1 serial connection electronics R3 connecting resistance R2 capacitor C 1; The coil of the 2 pin serial connection relay J of metal-oxide-semiconductor Q1 connects 2 pin of connector JC; The 3 pin ground connection of metal-oxide-semiconductor Q1, the moving contact of the contact switch K1 of relay J is connected with normally closed fixed contact 2, and fixed contact 1 is connected with 1 pin of connector JC;
Connector JC connects the 48V direct supply, and the powerful fan of the cold rack of connector JC2 water receiving uses the big electric current that produces also can surpass 120A, and selecting R2 in the design for use is 2 ohm high-power resistance;
Power resistor R1: because the big dash current duration be Millisecond, so the working time of power resistor R1 is also at Millisecond, in case starting fan; Just no longer hope this resistance work, at this moment, if power resistor R1 still is connected in the circuit; Can bring about tens watts extra power attenuation to system, so design relay J and this resistance R 1 parallelly connected use, in a single day the system that makes powers on; And after the fan operate as normal; Trigger relay is closed, thereby power resistor R1 is bypassed, to such an extent as to reduce unnecessary system power dissipation;
The time-delay control function adopts resistance R 2 and capacitor C 1 charging circuit and metal-oxide-semiconductor to form, and is used for adjusting on the one hand and powers on from system and normally start to power resistor by this section of bypass delay time, opens the trigger relay closure through metal-oxide-semiconductor on the other hand.
The invention has the beneficial effects as follows: the thump current inhibiting function when the present invention has only used some simple components and parts such as relay, electric capacity, power resistor, metal-oxide-semiconductor just to realize the start of water-cooled rack turbofan.Circuit design is simply ingenious, the most important thing is that circuit itself is low in energy consumption.Conscientiously having solved direct supply and powerful fan can not compatible problem in the water cooling unit cabinet system.
Description of drawings
Fig. 1 is the circuit theory diagrams that suppress the energy saver of powerful fan moment impact electric current.
Embodiment
Explanation at length below with reference to Figure of description method of the present invention and device being done.
The present invention is in order to suppress the circuit that powerful fan designs at system's powered on moment generation large impact electric current, to have obtained good effect through actual verification.
Big current inhibiting function: because the use of water-cooled rack is powerful fan, use 48V direct current supply, the big electric current of generation also can surpass 120A, so will use power resistor R1 to carry out current limliting, suppresses the generation of big electric current.The power resistor R1 that selects for use in the design is 3 ohm a power resistor, and it is more much smaller than cement resistor volume, can effectively reduce the dimensions of integrated circuit board.
Power resistor R1: because the big dash current duration be Millisecond, so the working time of power resistor R1 is also at Millisecond, in case starting fan is just no longer hoped this resistance work.At this moment, if power resistor R1 still is connected in the circuit, can bring about tens watts extra power attenuation to system.So the parallelly connected use with this resistance of design relay, in a single day the system that makes powers on, and after the fan operate as normal, trigger relay is closed, thereby power resistor is bypassed, to such an extent as to reduce unnecessary system power dissipation.
The time-delay control function: adopt the RC charging circuit with metal-oxide-semiconductor design accomplish, be used for adjusting on the one hand and power on from system and normally start to power resistor by this section of bypass delay time, open the trigger relay closure through metal-oxide-semiconductor on the other hand.
Thump current inhibiting function when invention has only used some simple components and parts such as relay, electric capacity, power resistor, metal-oxide-semiconductor just to realize the start of water-cooled rack turbofan.Circuit design is simply ingenious, the most important thing is that circuit itself is low in energy consumption.
Principle of work is following: the direct supply 48V of system powers on, and under the metering function of power resistor, fan normally starts; Simultaneously big electric capacity is in charging, when the electric capacity voltage reaches the threshold voltage of metal-oxide-semiconductor, and the metal-oxide-semiconductor conducting; And then relay closes, after this, system's operate as normal.Design at first is to suppress big electric current from three aspects, avoids the direct supply overcurrent protection, and this function only needs a power resistor to realize; If secondly power resistor still is series in the circuit after big electric current is suppressed; Himself certainly lead to a large amount of power attenuations; And can produce very big pressure drop, this can influence the operate as normal of fan and the stability of control panel, therefore selects for use relay that power resistor is bypassed; The 3rd be exactly relay closes will fan is normal start after, that is to say from system's this section of relay closes delay time that powers on to be greater than the time that dash current continues that therefore design time-delay control module is realized this requirement.
Thump electric current inhibiting effect when invention only uses some simple components and parts just to realize the start of water-cooled rack turbofan.Integrated circuit board is small and exquisite, and is flexible for installation, and circuit itself is low in energy consumption, and long-play can not bring big power attenuation cost to system.Conscientiously solved the practical problems that direct supply and high-power turbo fan in the water cooling unit cabinet system can not compatible work.And this invention also can solve other similar techniques problems.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (2)
1. an energy-saving design method that suppresses powerful fan moment impact electric current is characterized in that design from three aspects, at first is to suppress big electric current, avoids the direct supply overcurrent protection, and this function only needs a power resistor to realize; Secondly after big electric current is suppressed; If power resistor still is series in the circuit, himself certainly leads to a large amount of power attenuations, and can produce very big pressure drop; This can influence the operate as normal of fan and the stability of control panel, therefore selects for use relay that power resistor is bypassed; The 3rd be exactly relay closes will fan is normal start after, that is to say from system's this section of relay closes delay time that powers on to be greater than the time that dash current continues, therefore design time-delay control module is realized this requirement, concrete steps are following:
The direct supply 48V of system powers on, and under the metering function of power resistor, fan normally starts, and simultaneously big electric capacity is in charging, when the electric capacity voltage reaches the threshold voltage of metal-oxide-semiconductor, and metal-oxide-semiconductor conducting, and then relay closes, after this, system's operate as normal.
2. an energy saver that suppresses powerful fan moment impact electric current is characterized in that, comprises relay J, switch JK, capacitor C, resistance R 1, R2, R3, metal-oxide-semiconductor Q1, connector JC1, JC2; Wherein connector JC1 connects the 48V direct current; Connector JC2 wind-receiving fan, the 2 pin ground connection of connector JC1, connector JC2 wherein are between 1 pin of resistance R 1 serial connection connector JC1, connector JC2; Resistance R 2, capacitor C 1 pass and are connected between 1 pin and ground wire of connector JC1; The linking point of the 1 pin serial connection electronics R3 connecting resistance R2 capacitor C 1 of metal-oxide-semiconductor Q1, the coil of the 2 pin serial connection relay J of metal-oxide-semiconductor Q1 connects 2 pin of connector JC, the 3 pin ground connection of metal-oxide-semiconductor Q1; The moving contact of the contact switch K1 of relay J is connected with normally closed fixed contact 2, and fixed contact 1 is connected with 1 pin of connector JC;
Connector JC connects the 48V direct supply, and the powerful fan of the cold rack of connector JC2 water receiving uses the big electric current that produces also can surpass 120A, and selecting R2 in the design for use is 2 ohm high-power resistance;
Power resistor R1: because the big dash current duration be Millisecond, so the working time of power resistor R1 is also at Millisecond, in case starting fan; Just no longer hope this resistance work, at this moment, if power resistor R1 still is connected in the circuit; Can bring about tens watts extra power attenuation to system, so design relay J and this resistance R 1 parallelly connected use, in a single day the system that makes powers on; And after the fan operate as normal; Trigger relay is closed, thereby power resistor R1 is bypassed, to such an extent as to reduce unnecessary system power dissipation;
The time-delay control function adopts resistance R 2 and capacitor C 1 charging circuit and metal-oxide-semiconductor to form, and is used for adjusting on the one hand and powers on from system and normally start to power resistor by this section of bypass delay time, opens the trigger relay closure through metal-oxide-semiconductor on the other hand.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102197890A CN102789307A (en) | 2012-06-29 | 2012-06-29 | Energy-saving design method and device for restraining instant impact current of high-power fan |
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| CN2012102197890A CN102789307A (en) | 2012-06-29 | 2012-06-29 | Energy-saving design method and device for restraining instant impact current of high-power fan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798630A (en) * | 2019-01-25 | 2019-05-24 | 青岛海信日立空调系统有限公司 | A kind of air-conditioning main control loop and air conditioner |
| CN110658480A (en) * | 2019-11-11 | 2020-01-07 | 云南电网有限责任公司电力科学研究院 | Device and method for reducing load loading impact of charging pile test |
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| CN201523320U (en) * | 2009-06-09 | 2010-07-07 | 中兴通讯股份有限公司 | Slow start device of direct current power supply |
| CN102013664A (en) * | 2010-12-13 | 2011-04-13 | 海信科龙电器股份有限公司 | Protection device for transformer |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
| WO2011151906A1 (en) * | 2010-06-02 | 2011-12-08 | 三菱電機株式会社 | Inverter apparatus |
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2012
- 2012-06-29 CN CN2012102197890A patent/CN102789307A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201523320U (en) * | 2009-06-09 | 2010-07-07 | 中兴通讯股份有限公司 | Slow start device of direct current power supply |
| CN101640412A (en) * | 2009-09-02 | 2010-02-03 | 中兴通讯股份有限公司 | Soft-starting circuit of power supply |
| WO2011151906A1 (en) * | 2010-06-02 | 2011-12-08 | 三菱電機株式会社 | Inverter apparatus |
| CN102013664A (en) * | 2010-12-13 | 2011-04-13 | 海信科龙电器股份有限公司 | Protection device for transformer |
| CN202050391U (en) * | 2011-02-24 | 2011-11-23 | 广州视源电子科技有限公司 | Delayed starting circuit for MOS transistor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798630A (en) * | 2019-01-25 | 2019-05-24 | 青岛海信日立空调系统有限公司 | A kind of air-conditioning main control loop and air conditioner |
| CN110658480A (en) * | 2019-11-11 | 2020-01-07 | 云南电网有限责任公司电力科学研究院 | Device and method for reducing load loading impact of charging pile test |
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Application publication date: 20121121 |