CN205583823U - Two switching of power devices of isolated high speed - Google Patents
Two switching of power devices of isolated high speed Download PDFInfo
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Abstract
The utility model relates to a two switching of power devices of isolated high speed, including first transformer, the second transformer, third transformer, fourth transformer, a switch circuit, the 2nd switch circuit and controlling means, the primary winding and the working power supply of first transformer are connected, and secondary winding is connected with the second transformer's primary winding through a switch circuit, the primary winding and the stand -by power supply of third transformer are connected, and secondary winding is connected with the primary winding of fourth transformer through the 2nd switch circuit, controlling means is connected with a switch circuit, the 2nd switch circuit respectively. The utility model discloses a high -speed two tunnel input powers that switch of switch circuit satisfy the requirement of industrial production to switching time to keep apart two tunnel input powers completely through the transformer, overcome the power problem of mutual interference within a definite time. The utility model discloses effective efficiency and reliability that improves two switching of power is fit for working over a long time, has great value in the industrial production field.
Description
Technical field
This utility model relates to power supply handoff technique field, particularly relates to a kind of isolated high-speed double power-supply switching device.
Background technology
At field of industrial production, the short interruptions of power supply or disturbance all can cause the misoperation of equipment, fault or restart, and has a strong impact on commercial production by generation.Therefore, for ensureing the power supply reliability of visual plant, the scheme of dual power supply is generally used.Dual power supply needs to solve following two problem: one is to ensure that being effectively isolated of two-way power supply, it is impossible to crosses and causes two-way power supply short circuit, coupling；Another is to require two-way power supply switching time, for common electricity consumption object, requires general switching time less than 200 milliseconds, and for control system and computer equipment, general switching time requires less than 5 milliseconds.
In the conventional technology, mainly there is a two ways for realizing dual power supply switching:
(1) automatic transfer switch (ATS) is used to switch over
Automatic transfer switch uses the electrical equipments such as catalyst to constitute automatic power switch, as shown in Figure 1, the coil of catalyst C1, C2 monitors as electric power loop, and the contact of catalyst in chain promoter back-up circuit when working power fault being detected, this mode circuit structure is simple.
Automatic transfer switch relies on coil and the contact action of catalyst C1, C2, is generally higher than 100 milliseconds switching time, can apply to system less demanding to switching time and equipment, it is impossible to is applied to important control equipment.Another shortcoming of automatic transfer switch is to use no-voltage criterion, switches by releasing winding, there is hidden danger.When running voltage decline, but not up to release voltage time, circuit can not be switched to stand-by power supply may cause electrical equipment dead electricity.
(2) static state switching switch (STS) is used to switch over
As in figure 2 it is shown, static switching switch uses static switch G1, G2 of switching at a high speed to replace the catalyst of tradition automatic transfer switch, monitor electric power incoming line state in real time with single-chip microcomputer or DSP and control the switching of two-way power supply.
Owing to not using traditional catalyst, static switching switching time typically can be accomplished less than 5 milliseconds, can be applicable to important control equipment, but the static switch that uses of static switching switch exist can not the problem of completely isolated both sides power supply.In the case of forward voltage, there is forward leakage current in static switch when not turning on, and static switch there will be leakage current when bearing backward voltage.Therefore static switch can not completely isolated working power and stand-by power supply, and static switch is not suitable for working over a long time.
Utility model content
Based on this, for solving the problems of the prior art, this utility model provides a kind of isolated high-speed double power-supply switching device, it is possible to be switched fast input power, and by completely isolated for two-way input power.
For achieving the above object, this utility model embodiment is by the following technical solutions:
A kind of isolated high-speed double power-supply switching device, including the first transformator, the second transformator, the 3rd transformator, the 4th transformator, the first on-off circuit, second switch circuit and controls described first on-off circuit, the control device of described second switch connecting and disconnecting of the circuit according to the state in loop, working power place and the state in loop, stand-by power supply place；
Winding of described first transformator is connected with working power, and the Secondary Winding of described first transformator is connected with a winding of described second transformator by described first on-off circuit；
Winding of described 3rd transformator is connected with stand-by power supply, and the Secondary Winding of described 3rd transformator is connected with a winding of described 4th transformator by described second switch circuit；
Described control device is connected with described first on-off circuit, described second switch circuit respectively,
This utility model, by on-off circuit switching two-way input power at a high speed, meets the commercial production requirement for switching time, and by transformator by completely isolated for two-way input power, overcomes the problem interfered between power supply.This utility model is effectively increased efficiency and the reliability of dual power supply switching, is suitable for working over a long time, it is ensured that the power supply reliability of visual plant, has substantial worth at field of industrial production.
Accompanying drawing explanation
Fig. 1 is the principle schematic of automatic transfer switch in conventional art；
Fig. 2 is the principle schematic of static switching switch in conventional art；
Fig. 3 is isolated high-speed double power-supply switching device of the present utility model structural representation in one embodiment；
Fig. 4 is isolated high-speed double power-supply switching device of the present utility model structural representation in another embodiment；
Fig. 5 is isolated high-speed double power-supply switching device of the present utility model circuit theory schematic diagram In yet another embodiment.
Detailed description of the invention
Below in conjunction with preferred embodiment and accompanying drawing, content of the present utility model is described in further detail.Obviously, embodiment described below is only used for explaining this utility model, rather than to restriction of the present utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.Although it should be appreciated that hereinafter use term " first ", " second " etc. to describe various information, but these information should not necessarily be limited by these terms, these terms are only used for same type of information is distinguished from each other out.Such as, in the case of without departing from this utility model scope, " first " information can also be referred to as " second " information, similar, and " second " information can also be referred to as " first " information.It also should be noted that, for the ease of describing, accompanying drawing illustrate only the part relevant to this utility model rather than full content.
Fig. 3 is isolated high-speed double power-supply switching device of the present utility model structural representation in one embodiment, as shown in Figure 3, isolated high-speed double power-supply switching device in the present embodiment one, including the first transformator T11, the second transformator T12, the 3rd transformator T21, the 4th transformator T22, the first on-off circuit 1, second switch circuit 2 and controls the first on-off circuit 1, the control device 3 of second switch circuit 2 break-make according to the state in loop, working power place and the state in loop, stand-by power supply place.
Wherein, a winding of the first transformator T11 is connected with working power, and the Secondary Winding of the first transformator T11 is connected with a winding of the second transformator T12 by the first on-off circuit 1.Winding of the 3rd transformator T21 is connected with stand-by power supply, and the Secondary Winding of the 3rd transformator T21 is connected with a winding of the 4th transformator T22 by second switch circuit 2.Control device 3 to be connected with the first on-off circuit 1, second switch circuit 2 respectively.
The first transformator T11, the second transformator T12, the 3rd transformator T21 and the 4th transformator T22 is used working power and stand-by power supply to be isolated, and internal electric source is isolated with external power source, realize the completely isolated of two-way input power and out-put supply, overcome the problem interfered between power supply.Controlling device 3 can use single-chip microcomputer or dsp controller to realize controlling loop, switches the first on-off circuit 1, the break-make of second switch circuit 2, when working power puts into, controls device 3 and cuts off second switch circuit 2, thus locking disconnects stand-by power supply；When breaking down in loop, working power place (such as working power breaks down, chopper between the first transformator T11 fault, working power and the first transformator T11 breaks down), control device 3 and will cut off the first on-off circuit 1, control second switch circuit 2 to turn on, so that in-put of spare power supply, it is ensured that electrical equipment normally works.
It is also preferred that the left the first on-off circuit 1 and second switch circuit 2 all include high speed COMS bus exchange switch so that working power and stand-by power supply can realize being switched fast, and meet commercial production demand.
Preferably, in order to improve the switch speed of dual power supply further, controlling device 3 can use pure electric loop to constitute control loop, compared to single-chip microcomputer or dsp controller, electric loop is made without employing, signal transmission and data and calculates, therefore switching required time is lower, and switch speed faster, fully meets the demand of existing visual plant.
In the optional embodiment of one; as shown in Figure 4, control device 3 to include controlling the first control circuit 31 of the first on-off circuit 1 break-make, control the second control circuit 32 of second switch circuit 2 break-make, the first latch-up protection circuit 33 controlling first control circuit 31 duty and the second latch-up protection circuit 34 of control second control circuit 32 duty.
Wherein, first control circuit 31 is connected between the Secondary Winding of the first transformator T11 and the first on-off circuit 1, and second control circuit 32 is connected between Secondary Winding and the second switch circuit 2 of the 3rd transformator T21.First latch-up protection circuit 33 is connected between the first on-off circuit 1 and a winding of the second transformator T12, and the second latch-up protection circuit 34 is connected between a winding and the second switch circuit 2 of the 4th transformator T22.The outfan of the second latch-up protection circuit 34 accesses first control circuit 31, and the outfan of the first latch-up protection circuit 33 accesses second control circuit 32.
In this optional embodiment, control device 3 and include electric control loop and latch-up protection loop.When loop, working power place normally works; first control circuit 31 controls the first on-off circuit 1 and turns on; first latch-up protection circuit 33 exports block signal to second control circuit 32; second control circuit 32 is in disarmed state; uncontrollable second switch circuit 2 turns on, i.e. second switch circuit 2 is in off state, and stand-by power supply can not come into operation; now the second latch-up protection circuit 34 is in disarmed state, and the second latch-up protection circuit 34 will not export block signal to first control circuit 31.And when causing that residing for working power, break down in loop because of working power fault, the 3rd transformator T21 failure and other reasons; first latch-up protection circuit 33 will be in disarmed state; now second control circuit 32 works; control second switch circuit 2 to turn on; in-put of spare power supply; second latch-up protection circuit 34 exports block signal to first control circuit 31, and now the first on-off circuit 1 will be switched off.In like manner; when residing for stand-by power supply, break down in loop; second latch-up protection circuit 34 will be in disarmed state; block signal cannot be exported to first control circuit 31; so turning on controlling the first on-off circuit 1 after first control circuit 31 work, working power puts into, and the first latch-up protection circuit 33 will export block signal to second control circuit 32; making second switch circuit 2 disconnect, stand-by power supply exits.
The isolated high-speed double power-supply switching device in this utility model embodiment is described in detail below in conjunction with a concrete circuit.With reference to shown in Fig. 4, Fig. 5, first control circuit 31 includes resistance R11, R12, R13, switch element K14, electric capacity C11, C12.Wherein, switch element K14 has three ports, and the respectively first port, the second port and control end, when the voltage controlling end reaches threshold value, switch element K14 will turn on.First end of resistance R11 and first end of resistance R13 are connected to the first end of the first transformator T11 Secondary Winding；Second end of resistance R11 is connected by the second end of electric capacity C11 and the first transformator T11 Secondary Winding, and second end of resistance R13 is connected by the second end of electric capacity C12 and the first transformator T11 Secondary Winding；Series resistor R12 between second end and second end of resistance R13 of resistance R11；First end of resistance R13 and the second end are connected to the first on-off circuit 1.
First port of switch element K14 and the second end of the first transformator T11 Secondary Winding connect, and second port of switch element K14 is connected with second end of resistance R13, and the outfan controlling end and the second latch-up protection circuit 34 of switch element K14 connects.
In first control circuit 31; when residing for working power, loop is normal; if the second latch-up protection circuit 34 is invalid; then the voltage at electric capacity C12 two ends will ensure that the first on-off circuit 1 turns on, if in-put of spare power supply, the second latch-up protection circuit 34 effectively and will export the block signal control end to switch element K14; now switch element K14 conducting; making electric capacity C12 both end voltage is 0, and the first on-off circuit 1 cannot turn on, and working power exits.
With reference to shown in Fig. 4, Fig. 5, in the optional embodiment of one, the circuit structure of second control circuit 32 is identical with first control circuit 31, second control circuit 32 includes resistance R21, R22, R23, switch element K24, electric capacity C21, C22, wherein switch element K24 has three ports, being respectively the first port, the second port and control end, when the voltage controlling end reaches threshold value, switch element K24 will turn on.
First end of resistance R21 and first end of resistance R23 are connected to the first end of the 3rd transformator T21 Secondary Winding；Second end of resistance R21 is connected by the second end of electric capacity C21 and the second transformator T12 Secondary Winding, and second end of resistance R23 is connected by the second end of electric capacity C22 and the 3rd transformator T21 Secondary Winding；Series resistor R22 between second end and second end of resistance R23 of resistance R21；First end and second end of resistance R23 are connected to second switch circuit 2.
First port of switch element K24 and the second end of the 3rd transformator T21 Secondary Winding connect, and second port of switch element K14 is connected with second end of resistance R23, and the outfan controlling end and the first latch-up protection circuit 33 of switch element K24 connects.
When residing for working power, break down in loop; first latch-up protection circuit 33 is invalid; block signal cannot be exported to the switch element K24 in second control circuit 32; K24 open circuit; then in second control circuit 32, guarantee second switch circuit 2 is turned on by the voltage at electric capacity C22 two ends; in-put of spare power supply; second latch-up protection circuit 34 effectively and will export the block signal control end to switch element K14; now switch element K14 conducting; making electric capacity C12 both end voltage is 0, and the first on-off circuit 1 disconnects.In like manner; when residing for stand-by power supply, break down in loop; second latch-up protection circuit 34 is invalid; block signal cannot be exported to the switch element K14 in first control circuit 31; K14 open circuit; then in second control circuit 31, the voltage at electric capacity C12 two ends will ensure that the first on-off circuit 2 turns on, and working power puts into.
In the optional embodiment of one, with reference to shown in Fig. 4, Fig. 5, the first latch-up protection circuit 33 includes resistance R14, R15, R16, electric capacity C13, C14.Wherein, first end of resistance R14, first end of resistance R16 are connected to the first end of second winding of transformator T12；Second end of resistance R14 is connected to the second end of second winding of transformator T12 by electric capacity C13, and second end of resistance R16 is connected to the second end of second winding of transformator T12 by electric capacity C14；Series resistor R15 between second end and second end of resistance R16 of resistance R14.First end of resistance R14 connects the first on-off circuit 1, and second end of resistance R14 is connected to the outfan of second control circuit 32.
When working power puts into, and when loop normally works, in the first latch-up protection circuit 33, electric capacity C13 both sides will produce a blocking voltage, and this voltage drop causes second control circuit 32 cannot turn on second switch circuit 2.With reference to Fig. 5, blocking voltage fall makes switch element K24 turn on, and in such second control circuit 32, electric capacity C22 both sides voltage is 0, and second switch circuit will be unable to get through.
In the optional embodiment of one, with reference to shown in Fig. 4, Fig. 5, the second latch-up protection circuit 34 is identical with the circuit structure of the first latch-up protection circuit 33, and the second latch-up protection circuit 34 includes resistance R24, R25, R26, electric capacity C23, C24.Wherein, first end of resistance R24, first end of resistance R26 are connected to the first end of the 4th winding of transformator T22；Second end of resistance R24 is connected to the second end of the 4th winding of transformator by electric capacity C23, and second end of resistance R26 is connected to the second end of the 4th winding of transformator T22 by electric capacity C24；Series resistor R25 between second end and second end of resistance R26 of resistance R24.First end of resistance R24 connects second switch circuit 2, and second end of resistance R24 is connected to the outfan of first control circuit 31.
In the optional embodiment of one, with reference to shown in Fig. 4, Fig. 5, the first on-off circuit 1 includes resistance R17, electric capacity C15, switch element K13.Switch element K13 has three ports, and the respectively first port, the second port and control end, when the voltage controlling end reaches threshold value, switch element K14 will turn on.First port of switch element K13 is connected with second port of switch element K13 by resistance R17, electric capacity C15, and first port of switch element K13 is also connected with first end of resistance R13.Second port of switch element K13 is connected with first end of resistance R14, and the end that controls of switch element K13 is connected with second end of resistance R13.
In the optional embodiment of one, the circuit structure of second switch circuit 2 and the first on-off circuit 1 identical, referring in particular to shown in Fig. 5, it is not described further.
In above circuit, when working power puts into and the second latch-up protection circuit 34 is invalid, in first control circuit 31, the voltage at electric capacity C12 two ends will make switch element K13 turn on.After switch element K13 conducting; on the one hand; second transformator T12 work powers to the load; on the other hand, in the first latch-up protection circuit 33, electric capacity C13 both sides will produce a blocking voltage so that second control circuit 32 breaker in middle unit K24 turns on; thus make electric capacity C22 short circuit in second control circuit 32; its both end voltage is 0, it is impossible to making the switch element K23 in second switch circuit 2 turn on, stand-by power supply cannot come into operation.Work as working power, 3rd transformator T21, chopper K11 between working power and the 3rd transformator T21 any one when breaking down, in first latch-up protection circuit 33, the voltage drop of electric capacity C13 both sides drops to below active voltage, first latch-up protection circuit 33 transfers disarmed state to, if the normal (stand-by power supply in stand-by power supply loop, chopper K21, 3rd transformator T21 is the most normal), stand-by power supply will put into, thus the second latch-up protection circuit 34 transfers effective status to, the voltage drop of electric capacity C23 both sides makes first control circuit 31 breaker in middle unit K14 turn on, electric capacity C12 short circuit, switch element K13 transfers off-state to.
Further; with reference to shown in Fig. 5; in order to ensure the security performance that dual power supply switches; isolated high-speed double power-supply switching device in the present embodiment is additionally added the protection switch of manual operation; concrete; in working power loop, between the second port and second end of resistance R13 of switch element K14, it is serially connected with switch LK.Can manually put into or excise the first latch-up protection circuit and the second latch-up protection circuit by operating this protection switch.Additionally, first port of switch element K14 is connected with second port of switch element K14 by resistance R18, electric capacity C16, go back and be connected to switch MT1, switch MQ2 between first port and second port of switch element K14, switch MT1, MQ2 are manual operation switch, input and the excision of user's Non-follow control power supply can be made, improve security performance.In like manner, various protection switch can also be added in stand-by power supply loop, concrete as it is shown in figure 5, the most no longer describe in detail.
The present embodiment have employed two groups of transformators, by completely isolated for two-way input power, overcome interference problem between power supply.In order to ensure the efficiency that dual power supply switches, each switch element above-mentioned all can use high speed COMS bus exchange switch, such as static switch or IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor).Wherein, static switch is also known as rest switch, it is a kind of noncontacting switch, it is a kind of alternating-current switch with two controllable silicon (SCR) reverse parallel connection compositions, and the compound full-control type voltage driven type power semiconductor that IGBT is made up of BJT (double pole triode) and MOS (insulating gate type field effect tube).There is not physical contact in high speed COMS bus exchange switch, time-consuming without switching the most in theory.The present embodiment controls loop and locked loop and all have employed electric loop, it is not necessary to carry out sampling as single-chip microcomputer or DSP, signal transmission and Time Calculation, therefore reduce further the switching time of dual power supply.Through reality test, isolated high-speed double power-supply switching device in the present embodiment, its switching time is less than 1ms, switchs (STS) and the switching time of automatic transfer switch (ATS) less than static state switching, is fully able to meet the power supply switching requirement of various visual plant.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (10)
1. an isolated high-speed double power-supply switching device, it is characterized in that, including the first transformator, the second transformator, the 3rd transformator, the 4th transformator, the first on-off circuit, second switch circuit and control described first on-off circuit, the control device of described second switch connecting and disconnecting of the circuit according to the state in loop, working power place and the state in loop, stand-by power supply place；
Winding of described first transformator is connected with working power, and the Secondary Winding of described first transformator is connected with a winding of described second transformator by described first on-off circuit；
Winding of described 3rd transformator is connected with stand-by power supply, and the Secondary Winding of described 3rd transformator is connected with a winding of described 4th transformator by described second switch circuit；
Described control device is connected with described first on-off circuit, described second switch circuit respectively.
Isolated high-speed double power-supply switching device the most according to claim 1; it is characterized in that, described control device includes controlling the first control circuit of described first on-off circuit break-make, controls the second control circuit of described second switch connecting and disconnecting of the circuit, control the first latch-up protection circuit of described first control circuit duty and control the second latch-up protection circuit of described second control circuit duty；
Described first control circuit is connected between the Secondary Winding of described first transformator and described first on-off circuit, and described second control circuit is connected between Secondary Winding and the described second switch circuit of described 3rd transformator；
Described first latch-up protection is electrically connected between described first on-off circuit and a winding of described second transformator, and described second latch-up protection is electrically connected between a winding and the described second switch circuit of described 4th transformator；
The outfan of described second latch-up protection circuit accesses described first control circuit, and the outfan of described first latch-up protection circuit accesses described second control circuit.
Isolated high-speed double power-supply switching device the most according to claim 2, it is characterised in that described first control circuit includes resistance R11, R12, R13, switch element K14, electric capacity C11, C12；
Switch element K14 has three ports, the respectively first port, the second port and control end；
First end of resistance R11 and first end of resistance R13 are connected to the first end of described first transformer secondary winding；Second end of resistance R11 is connected with the second end of described first transformer secondary winding by electric capacity C11, and second end of resistance R13 is connected with the second end of described first transformer secondary winding by electric capacity C12；Series resistor R12 between second end and second end of resistance R13 of resistance R11；First end of resistance R13 and the second end are connected to described first on-off circuit；
First port of switch element K14 is connected with the second end of described first transformer secondary winding, and second port of switch element K14 is connected with second end of resistance R13, and the end that controls of switch element K14 is connected with the outfan of described second latch-up protection circuit.
Isolated high-speed double power-supply switching device the most according to claim 3, it is characterised in that described second control circuit includes resistance R21, R22, R23, switch element K24, electric capacity C21, C22；
Switch element K24 has three ports, the respectively first port, the second port and control end；
First end of resistance R21 and first end of resistance R23 are connected to the first end of described 3rd transformer secondary winding；Second end of resistance R21 is connected with the second end of described second transformer secondary winding by electric capacity C21, and second end of resistance R23 is connected with the second end of described 3rd transformer secondary winding by electric capacity C22；Series resistor R22 between second end and second end of resistance R23 of resistance R21；First end of resistance R23 and the second end are connected to described second switch circuit；
First port of switch element K24 is connected with the second end of described 3rd transformer secondary winding, and second port of switch element K14 is connected with second end of resistance R23, and the end that controls of switch element K24 is connected with the outfan of described first latch-up protection circuit.
Isolated high-speed double power-supply switching device the most according to claim 3, it is characterised in that described first latch-up protection circuit includes resistance R14, R15, R16, electric capacity C13, C14；
First end of resistance R14, first end of resistance R16 are connected to the first end of described second winding of transformator；Second end of resistance R14 is connected to the second end of described second winding of transformator by electric capacity C13, and second end of resistance R16 is connected to the second end of described second winding of transformator by electric capacity C14；Series resistor R15 between second end and second end of resistance R16 of resistance R14；
First end of resistance R14 connects described first on-off circuit, and second end of resistance R14 is connected to the outfan of described second control circuit.
Isolated high-speed double power-supply switching device the most according to claim 3, it is characterised in that described second latch-up protection circuit includes resistance R24, R25, R26, electric capacity C23, C24；
First end of resistance R24, first end of resistance R26 are connected to the first end of described 4th winding of transformator；Second end of resistance R24 is connected to the second end of described 4th winding of transformator by electric capacity C23, and second end of resistance R26 is connected to the second end of described 4th winding of transformator by electric capacity C24；Series resistor R25 between second end and second end of resistance R26 of resistance R24；
First end of resistance R24 connects described second switch circuit, and second end of resistance R24 is connected to the outfan of described first control circuit.
Isolated high-speed double power-supply switching device the most according to claim 5, it is characterised in that described first on-off circuit includes resistance R17, electric capacity C15, switch element K13；
Switch element K13 has three ports, the respectively first port, the second port and control end；
First port of switch element K13 is connected with second port of switch element K13 by resistance R17, electric capacity C15；First port of switch element K13 is also connected with first end of resistance R13；
Second port of switch element K13 is connected with first end of resistance R14；
The end that controls of switch element K13 is connected with second end of resistance R13.
8. according to the isolated high-speed double power-supply switching device according to any one of claim 3 to 7, it is characterised in that be serially connected with switch LK between the second port and second end of resistance R13 of switch element K14.
9. according to the isolated high-speed double power-supply switching device according to any one of claim 3 to 7, it is characterised in that first port of switch element K14 is connected with second port of switch element K14 by resistance R18, electric capacity C16；Go back and be connected to switch MT1, switch MQ2 between first port and second port of switch element K14.
10. according to the isolated high-speed double power-supply switching device according to any one of claim 3 to 7, it is characterised in that described switch element is static switch or insulated gate bipolar transistor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449839A (en) * | 2015-12-30 | 2016-03-30 | 中国能源建设集团广东省电力设计研究院有限公司 | Isolated type high-speed double-power-supply switching device |
| CN108667271A (en) * | 2018-04-23 | 2018-10-16 | 清华大学 | A kind of full isolated form multiport transverter |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449839A (en) * | 2015-12-30 | 2016-03-30 | 中国能源建设集团广东省电力设计研究院有限公司 | Isolated type high-speed double-power-supply switching device |
| CN108667271A (en) * | 2018-04-23 | 2018-10-16 | 清华大学 | A kind of full isolated form multiport transverter |
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