CN1171371C - Power supply system with spare AC power source and function against reverse insertion of AC power source - Google Patents
Power supply system with spare AC power source and function against reverse insertion of AC power source Download PDFInfo
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- CN1171371C CN1171371C CNB01118342XA CN01118342A CN1171371C CN 1171371 C CN1171371 C CN 1171371C CN B01118342X A CNB01118342X A CN B01118342XA CN 01118342 A CN01118342 A CN 01118342A CN 1171371 C CN1171371 C CN 1171371C
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- power
- power supply
- direct current
- electrically connected
- input
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Abstract
The present invention relates to a power supply system having alternate-current standby function and protective function of inverting electric polarities of an alternating-current power supply. The parallel power supply system is provided with at least two groups of alternating-current input power supplies, (2N+1) groups of DC power supply modules, a switching circuit used for automatically switching to the other normal alternating-current input power supply when an alternating-current input power supply has abnormity, a protection circuit arranged at the switching circuit and is used for protecting the switching circuit from being damaged when the electrical polarities of the alternating current power supply are inverted. Thus, a stable power supply system is obtained.
Description
Technical field
The present invention relates to a kind of power system, particularly relate to a kind of at least two group alternating current input power supplyings that comprise, 2N+1 organizes (wherein N is a positive integer) direct current power supply module, and one switches circuit, in order to when an alternating current input power supplying is unusual, can automatically switch to another normal AC power input; And a protective circuit, be to be located at this commutation circuit, can protect AC power electrically anti-inserted, the tool stand-by AC that is damaged with the circuit unit of avoiding commutation circuit and the power system of the anti-inserted function of tool protection AC power.
Background technology
As shown in Figure 1, existing power system with direct current standby (DC Redundant) function, for single AC power input 11 provides many group DC power supplier 12 outputs in parallel, it is under the situation that meets with single DC power supplier damage, even the unlikely power supply that causes is exported interruption, because the formed standby functions of other direct current power supply module is enough to keep normal power supply output; Yet, if single AC power input 11 because of interrupting improperly or open circuit, for example attaching plug is played the socket on wall or UPS because of carelessness, just whole power system will be interrupted, causes computer workstation or server-centric to stop then.
The power failure of avoiding above-mentioned fortuitous event to cause, desirable power system is except possessing direct current standby functions of the prior art, also should provide ac input end similar standby functions, just when one group of alternating current input power supplying accident power-off, power system can also continue power supply by other alternating current input power supplying, embodiment as shown in Figure 2, this power system has two groups of AC power inputs, i.e. first AC power input 21 and second AC power input 22, wherein this AC power input 21 and second AC power input 22 is except that being electrically connected to the first direct current power supply module 24 and the second direct current power supply module 25 respectively, also all be electrically connected to two groups of relays that switch one to one of commutation circuit 23 respectively, i.e. first relay 231 and second relay 232; This relay then again via behind one group two pairs one the 3rd relays 233 that switch, is electrically connected the 3rd direct current power supply module 26.Situation when being normal operation shown in Figure 2, the 3rd direct current power supply module 26 participates in the first direct current power supply module 24 with 25 outputs in parallel of the second direct current power supply module, the power that is higher than load consumption is provided, its required AC power is from first AC power input 21, therefore first relay 231 is a conducting state, and the 3rd relay 233 then is an end conducting that connects the 3rd direct current supply module 26 and first relay 231.
Figure 3 shows that the situation that first AC power input 31 is interrupted, it causes the first direct current power supply module, 34 power failure, second AC power input this moment 32 must be brought into play stand-by AC function and stops simultaneously to avoid the first direct current power supply module 34 and the second direct current power supply module 36, therefore commutation circuit 33 begins action: at first, second relay 332 can be because of AC power 31 disappearance conductings, and first relay 331 can disconnect because of AC power 31 disappears simultaneously; Secondly, connect 333 li ends that connect the 3rd direct current power supply module 36 and second relay 332 of the 3rd relay, make the second direct current power supply module 36 be electrically connected to second AC power input 32 to continue power supply.
Said method has been taken into account power system direct current and the standby functions that exchanges basically, and a reliable and stable power supply source can be provided, yet the blind spot on the safety is but arranged when practical application.The two kinds of specifications in two Kong Yusan holes are divided in existing 110V supply socket, and in design have a fool proof effect more, that is attaching plug can only insert supply socket with specific direction, purpose is in order to allow attaching plug obtain fixing live wire and ground line position from socket, yet always there is certain situation can make attaching plug to be inserted in the supply socket by any direction, such as meeting with or adopt supply socket or the plug that does not have the fool proof effect, because power supply is anti-inserted, may make that the live wire of the 3rd above-mentioned relay 333 is adjacent with the ground wire contact, when switching the AC power input, cause the AC power short circuit and cause damage.
Summary of the invention
Take place for fear of said circumstances; the object of the present invention is to provide the power system of the anti-inserted function of a kind of tool stand-by AC and tool protection AC power; make it in possessing the power system of stand-by AC function; the anti-inserted protective circuit of AC power is avoided in setting; can avoid the live wire of the 3rd relay 333 adjacent, and unlikelyly when switching, cause the AC power short circuit with the ground wire contact.
For reaching above-mentioned purpose, the invention provides the power system of the electrical anti-inserted function of a kind of tool stand-by AC and tool protection AC power, comprising: at least two group alternating current input power supplyings; At least three group direct current power supply modules, described direct current power supply module wherein two groups be electrically connected to described alternating current input power supplying respectively, and all the other direct current power supply modules are as a standby direct current power supply module; One switches circuit, be electrically connected on described alternating current input power supplying and described standby direct current power supply module this, it comprises two groups of relays that switch one to one at least, one protective circuit and one group of relay that are at least two pairs one switchings, one end of the described relay that switches one to one is electrically connected to described alternating current input power supplying respectively, in order to the conducting of controlling indivedual alternating current input power supplyings path whether, its other end then is the input that is electrically connected to a protective circuit respectively, and an end of described two pairs one relays that switch is electrically connected to the output of the art guest of institute protective circuit respectively, the other end then is electrically connected to described standby direct current power supply module, and described commutation circuit can automatically switch to another normal AC power input when an alternating current input power supplying is unusual; One protective circuit; it is located in this commutation circuit; it has at least two full-wave rectifiers; be connected in parallel; its input is electrically connected on the other end of the described relay that switches one to one respectively; its output is electrically connected on described one group of end that is at least two pairs one relays that switch, and this protective circuit is in order to protect an AC power electrically anti-inserted and avoid the damage of this commutation circuit.
Wherein said alternating current input power supplying is different AC power source.
Wherein said DC power supplier is to adopt output power supply in parallel.
Wherein said standby DC power supplier is all just often at this alternating current input power supplying, and being has the output power supply.
Wherein said commutation circuit is live wire and the ground wire that switches this AC power input simultaneously.
The motion switch of wherein said commutation circuit is that AC power alternation in this normal AC power input just carries out during to zero crossover point.
The present invention compared with prior art has tangible advantage and good effect.By above technical scheme as can be known; tool stand-by AC of the present invention and can protect the power system of the electrical anti-inserted function of AC power; it is in practical application; the telotism of not only only seeking for this power system is stable; and consider overall system security more; must reach the requirement of safety standard, so that the user to be provided the reliable power-supply system that firmly can feel at ease to use again.
Description of drawings
Fig. 1 is existing power system.
Fig. 2 is the power system with stand-by AC function.
Fig. 3 has a circuit block diagram than embodiment of the power system of stand-by AC for the present invention.
The circuit structure diagram of one embodiment of the power system that Fig. 4 protects AC power to import electrical anti-inserted function for the present invention has with stand-by AC.
The label of primary clustering is as follows among the figure:
11: the AC power input
12: the direct current power supply module
AC power input in 21: the first
AC power input in 22: the second
23: commutation circuit
231: the first relays
232: the second relays
233: the three relays
24: the first direct current power supply modules
25: the second direct current power supply modules
26: the three direct current power supply modules
AC power input in 31: the first
AC power input in 32: the second
33: commutation circuit
331: the first relays
332: the second relays
333: the three relays
34: the first direct current power supply modules
35: the second direct current power supply modules
36: the three direct current power supply modules
AC power input in 41: the first
AC power input in 42: the second
43: commutation circuit
431: the first relays
432: the second relays
433: the three relays
434: protective circuit
4341: the first full-wave rectifiers
4342. second full-wave rectifier
44: the first direct current power supply modules
45: the second direct current power supply modules
46: the three direct current power supply modules
47: controller
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, tool stand-by AC that foundation the present invention is proposed and the power system that can protect the electrical anti-inserted function of AC power, its concrete structure, feature and effect thereof, describe in detail as after.
See also shown in Figure 4ly, it shows the embodiment that has stand-by AC and can protect the power system of the electrical anti-inserted function of AC power of the present invention.In the embodiment of Fig. 4,, will cause the first direct current power supply module, 44 power failure if AC power input 41 produces the interruption situation.At this moment, second AC power input 42 must be brought into play stand-by AC function and stops simultaneously to avoid the direct current power supply module 44 and the second direct current power supply module 46, therefore commutation circuit 43 just begins action: at first, second relay 432 can be because of AC power 41 disappearance conductings, and first relay 431 can disconnect because of AC power 31 disappears simultaneously.Secondly, connect 433 li ends that connect the 3rd direct current power supply module 46 and second relay 432 of the 3rd relay, make the second direct current power supply module 46 be electrically connected to second AC power input 42 to continue power supply.
Tool stand-by AC of the present invention and the power system that can protect the electrical anti-inserted function of AC power are except two groups of relays that switch one to one (first relay 431 and second relay 432), outside one group two pairs one relays (the 3rd relay 433) that switch, more be provided with protective circuit 434, after wherein first AC power input 41 is electrically connected to first full-wave rectifier, 4341 rectifications of protective circuit 434 via first relay 431, be electrically connected to one group of end points of the 3rd relay 433 again; After second AC power input 42 then is electrically connected to second full-wave rectifier, 4342 rectifications of protective circuit 434 via second relay 432, be electrically connected to another group end points of the 3rd relay 433 again.Because this AC power input all is through just being electrically connected to the end points of the 3rd relay 433 after the full-wave rectification, no matter therefore how conversion of the live wire of this AC power input and ground wire, as long as arrange properly two groups of input endpoints of the 3rd relay 433, positive-negative power contiguous situation does not appear in the electric power polarity of adjacent end points, just can avoid the accident of previous AC power short circuit to take place.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. the power system of the electrical anti-inserted function of tool stand-by AC and tool protection AC power is characterized in that it comprises:
At least two group alternating current input power supplyings;
At least three group direct current power supply modules, described direct current power supply module wherein two groups be electrically connected to described alternating current input power supplying respectively, and all the other direct current power supply modules are as a standby direct current power supply module;
One switches circuit, be electrically connected on described alternating current input power supplying and described standby direct current power supply module this, it comprises two groups of relays that switch one to one at least, one protective circuit and one group of relay that are at least two pairs one switchings, one end of the described relay that switches one to one is electrically connected to described alternating current input power supplying respectively, in order to the conducting of controlling indivedual alternating current input power supplyings path whether, its other end then is the input that is electrically connected to a protective circuit respectively, and an end of described two pairs one relays that switch is electrically connected to the output of the art guest of institute protective circuit respectively, the other end then is electrically connected to described standby direct current power supply module, and described commutation circuit can automatically switch to another normal AC power input when an alternating current input power supplying is unusual;
One protective circuit; it is located in this commutation circuit; it has at least two full-wave rectifiers; be connected in parallel; its input is electrically connected on the other end of the described relay that switches one to one respectively; its output is electrically connected on described one group of end that is at least two pairs one relays that switch, and this protective circuit is in order to protect an AC power electrically anti-inserted and avoid the damage of this commutation circuit.
2. the power system of tool stand-by AC according to claim 1 and the electrical anti-inserted function of tool protection AC power is characterized in that described alternating current input power supplying is different AC power source.
3. the power system of tool stand-by AC according to claim 1 and the electrical anti-inserted function of tool protection AC power is characterized in that described DC power supplier is to adopt output power supply in parallel.
4. the power system of tool stand-by AC according to claim 1 and the electrical anti-inserted function of tool protection AC power is characterized in that described standby DC power supplier is all just often at this alternating current input power supplying, is that the output power supply is arranged.
5. the power system of tool stand-by AC according to claim 1 and the electrical anti-inserted function of tool protection AC power is characterized in that described commutation circuit is live wire and the ground wire that switches this AC power input simultaneously.
6. the power system of the electrical anti-inserted function of tool stand-by AC according to claim 1 and tool protection AC power, the motion switch that it is characterized in that described commutation circuit are that AC power alternation in this normal AC power input just carries out during to zero crossover point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01118342XA CN1171371C (en) | 2001-05-24 | 2001-05-24 | Power supply system with spare AC power source and function against reverse insertion of AC power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01118342XA CN1171371C (en) | 2001-05-24 | 2001-05-24 | Power supply system with spare AC power source and function against reverse insertion of AC power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1388621A CN1388621A (en) | 2003-01-01 |
| CN1171371C true CN1171371C (en) | 2004-10-13 |
Family
ID=4663115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01118342XA Expired - Fee Related CN1171371C (en) | 2001-05-24 | 2001-05-24 | Power supply system with spare AC power source and function against reverse insertion of AC power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1171371C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373744C (en) * | 2003-03-24 | 2008-03-05 | 新昌机械设备株式会社 | Unit resident normal/ emergency power supply switch board and its power supply automatic converting device |
| CN104345854B (en) * | 2013-08-01 | 2017-09-22 | 国际商业机器公司 | Power system |
| CN105107824B (en) * | 2015-09-10 | 2017-06-16 | 北京融达建业建筑工程技术有限公司 | A kind of oilfield drilling discarded object method for innocent treatment |
| WO2018000192A1 (en) * | 2016-06-28 | 2018-01-04 | 陈锡瑜 | Capacitor trip device having automatic power switching and method therefor |
-
2001
- 2001-05-24 CN CNB01118342XA patent/CN1171371C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1388621A (en) | 2003-01-01 |
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