CN105846393A - Memristor-based direct current breaker circuit - Google Patents
Memristor-based direct current breaker circuit Download PDFInfo
- Publication number
- CN105846393A CN105846393A CN201610362874.0A CN201610362874A CN105846393A CN 105846393 A CN105846393 A CN 105846393A CN 201610362874 A CN201610362874 A CN 201610362874A CN 105846393 A CN105846393 A CN 105846393A
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- China
- Prior art keywords
- memristor
- electric
- controlled switch
- input
- judgment means
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/081—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current and depending on the direction
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- Emergency Protection Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a memristor-based direct current breaker circuit, which comprises an overcurrent detection device, a judgment device, a memristor-based direct current breaker, a switch K and a load. The memristor-based direct current breaker is formed by a memristor and a PI (Proportional Integral) controller. When the circuit runs normally, the PI controller is connected through the switch, the memristor is kept at a low resistance state; when the circuit has overcurrent, the switch is triggered to switch out the PI controller, the resistance of the memristor is gradually increased along with the flowing current, the memristor presents a high resistance state in a very quick time, so that the increase of the current is limited and the whole circuit is protected.
Description
Technical field
The present invention relates to the technical field of power electronics, particularly to a kind of dc circuit breaker based on memristor
Circuit.
Background technology
Memristor is a kind of primary element with memory characteristic proposed by scientist Cai Shaotang of Chinese origin, is divided into
Magnetic control memristor and lotus control memristor, wherein the definition of magnetic control memristor is:
Its fundamental characteristics is, its resistance constantly can increase along with the forward current flow through.
Along with the development of D.C. high voltage transmission, dc circuit breaker becomes one of its bottleneck.Existing direct current interruption
As long as device is divided into three kinds, i.e. mechanical type, all solid state formula and hybrid.These three mode is respectively arranged with pluses and minuses.
Mechanical type dc circuit breaker reliability is high, and on-state loss is low, but quick-action is poor.Solid state and hybrid solid-state
The quick-action of formula is good, however it is necessary that substantial amounts of power electronic devices, and on-state loss is high, involves great expense.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that a kind of based on memristor straight
Stream breaker circuit.
The purpose of the present invention is achieved through the following technical solutions:
A kind of dc circuit breaker circuit based on memristor, described circuit includes overcurrent detecting device, judgement
Device, dc circuit breaker and load Rd,
Described dc circuit breaker includes the memristor with initial value variable end, PI controller and electric-controlled switch K,
The end that controls of described electric-controlled switch K is connected with the outfan of described judgment means, and described electric-controlled switch K's is defeated
Enter end to be connected with the input of described memristor, the outfan of described electric-controlled switch K and described PI controller
Positive input be connected, the outfan of described PI controller is connected with the initial value variable end of described memristor,
The reverse input end of described memristor is connected with one end of load Rd；
The first input end of input voltage breaks with input and the described direct current of described overcurrent detecting device
The positive input of road device connects, and the second input of input voltage is connected with the other end of described load Rd,
The outfan of described overcurrent device is connected with described judgment means input, the outfan of described judgment means
It is connected with the control end of described electric-controlled switch K.
Further, described overcurrent detecting device is electric current detector, measures wink by electric current detector
Time electric current, and pass to described judgment means.
Further, described judgment means is comparator, and the first input end of described comparator is with described the most electric
The outfan of flow detection device be connected, the second input of described comparator be connected with the working value of setting or
Inner setting comparison value, the outfan of described comparator is connected with the control end of described electric-controlled switch K.
Further, described overcurrent detecting device measures transient current when there is overcurrent, and passes to
Described judgment means, described judgment means receives the signal from described overcurrent detecting device, and with set
Determine working value to compare, when the transient current signal from described overcurrent detecting device exceedes setting action
During value, output control signal gives described electric-controlled switch K, triggers described electric-controlled switch K and switches described PI control
Device accesses or disconnects the initial value variable end of described memristor.
Further, when described electric-controlled switch K receives the actuating signal from described judgment means, described
Electric-controlled switch K disconnects the connection of described PI controller and the initial value variable end of described memristor, when electric current stream
When crossing memristor, described memristor quickly transfers high-impedance state to；
When described electric-controlled switch K is not received by the actuating signal from described judgment means, described automatically controlled open
Close K to be connected with the initial value variable end of described memristor by described PI controller, when electric current flows through memristor,
Described memristor maintains low resistance state.
The present invention has such advantages as relative to prior art and effect:
1, circuit structure of the present invention is simple, reduce the cost of existing dc circuit breaker and improve it can
By property.
2, the advantage that present invention incorporates existing three kinds of dc circuit breakers, has the same of low on-state loss
Time, there is good quick-action.
Accompanying drawing explanation
Fig. 1 is the memristor with initial value variable end；
Fig. 2 is the schematic diagram of a kind of dc circuit breaker based on memristor disclosed by the invention；
Fig. 3 is the schematic diagram of a kind of dc circuit breaker circuit based on memristor disclosed by the invention；
Fig. 4 is that the matlab of a kind of dc circuit breaker based on memristor disclosed by the invention emulates equivalent electric
Lu Tu；
Fig. 5 is the simulation result figure of a kind of dc circuit breaker circuit based on memristor disclosed by the invention.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, develop simultaneously referring to the drawings
The present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment
As it is shown in figure 1, be the memristor with initial value variable end, wherein A end is the forward input of memristor
End, B end is the reverse input end of memristor, and G end is the initial value variable end of memristor.At initial value variable end
Unsettled, electric current when memristor positive input (A end) flows to reverse input end (B end), memristor
Resistance can constantly increase.By changing initial value, thus it is possible to vary its memristor value.
As in figure 2 it is shown, be dc circuit breaker based on memristor.When electric-controlled switch K accesses PI controller
Time, PI controller maintains the resistance of memristor by controlling the initial value variable end of memristor so that when having
Electric current flows through memristor RMTime, it still can maintain low resistance state state.
As it is shown on figure 3, be the actual application circuit schematic diagram utilizing dc circuit breaker based on memristor.When
During normal operation circuit, access PI controller, memristor R by electric-controlled switch KMMaintain low resistance state,
On-state loss is low.When there is overcurrent, the overcurrent device of this circuit detects overcurrent and passes to sentence
Disconnected device, thus control electric-controlled switch K and excise PI controller.At this moment memristor initial value variable end is equivalent to
Unsettled, the resistance of memristor constantly increases along with the electric current flow through, thus limits electric current, disconnecting circuit.
As it is shown on figure 3, a kind of dc circuit breaker circuit based on memristor, described electricity disclosed in the present embodiment
Road includes overcurrent detecting device, judgment means, dc circuit breaker and load Rd,
Described dc circuit breaker includes the memristor with initial value variable end, PI controller and electric-controlled switch K,
The end that controls of described electric-controlled switch K is connected with the outfan of described judgment means, and described electric-controlled switch K's is defeated
Enter end to be connected with the input of described memristor, the outfan of described electric-controlled switch K and described PI controller
Positive input be connected, the outfan of described PI controller is connected with the initial value variable end of described memristor,
The reverse input end of described memristor is connected with one end of load Rd；
The first input end of input voltage breaks with input and the described direct current of described overcurrent detecting device
The positive input of road device connects, and the second input of input voltage is connected with the other end of described load Rd,
The outfan of described overcurrent device is connected with described judgment means input, the outfan of described judgment means
It is connected with the control end of described electric-controlled switch K.
In further preferred embodiment, described overcurrent detecting device is electric current detector, by electricity
Transient current measured by stream survey meter, and passes to described judgment means.
In further preferred embodiment, described judgment means is comparator, the first of described comparator
Input is connected with the outfan of described overcurrent detecting device, the second input of described comparator and setting
Working value be connected or inner setting comparison value, the outfan of described comparator and described electric-controlled switch
The control end of K is connected.
When normal operation circuit, access PI controller by electric-controlled switch K.At this moment memristor RMMaintain
At low resistance state.When overcurrent occurs in circuit, described overcurrent detecting device measures transient current, and passes
Passing judgment means, described judgment means receives the signal from overcurrent detecting device, and dynamic with setting
Compare as value, when exceeding setting working value from the transient current signal of overcurrent detecting device, defeated
Go out control signal and switch out PI controller to electric-controlled switch K, triggering electric-controlled switch K.At this moment the resistance of memristor
Value constantly increases along with the electric current flow through, and within the time quickly, memristor presents high-impedance state, thus
Limit the increase of electric current, protect whole circuit.
In concrete application, when being not received by the actuating signal from judgment means, electric-controlled switch K is by PI
Controller is connected with memristor, and when electric current flows through memristor, memristor maintains low resistance state all the time.
When electric-controlled switch K receives the actuating signal from judgment means, electric-controlled switch K disconnects PI control
Device processed and the connection of memristor, when electric current flows through memristor, memristor quickly transfers high-impedance state to.
When memristor is high-impedance state, whole circuit is equivalent to open circuit, thus protects whole circuit.
As shown in Figure 4, for the matlab equivalent circuit for simulating figure of a kind of dc circuit breaker based on memristor,
Given input voltage is 2000V, and inner setting comparison value (that is, overcurrent operating valve value) is 18A.
Utilize excision resistance Ron the most suddenly, manufacture the situation of overcurrent.
As it is shown in figure 5, be the simulation result figure of dc circuit breaker based on memristor, when 0.08s, go out
Existing overcurrent, the rapid action of dc circuit breaker, by switch excision PI controller, thus disconnecting circuit. from
Simulation result is it may be seen that its turn-off time is ms rank.
In sum, the disclosed dc circuit breaker circuit structure based on memristor of this embodiment is simple, reduces
The cost of existing dc circuit breaker and improve its reliability, meanwhile, combines existing three kinds of direct currents
The advantage of chopper, has low on-state loss, and keeps good quick-action.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-mentioned reality
Execute the restriction of example, the change made under other any spirit without departing from the present invention and principle, modification,
Substitute, combine, simplify, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (5)
1. a dc circuit breaker circuit based on memristor, described circuit include overcurrent detecting device,
Judgment means, dc circuit breaker and load Rd, it is characterised in that
Described dc circuit breaker includes the memristor with initial value variable end, PI controller and electric-controlled switch K,
The end that controls of described electric-controlled switch K is connected with the outfan of described judgment means, and described electric-controlled switch K's is defeated
Enter end to be connected with the input of described memristor, the outfan of described electric-controlled switch K and described PI controller
Positive input be connected, the outfan of described PI controller is connected with the initial value variable end of described memristor,
The reverse input end of described memristor is connected with one end of load Rd；
The first input end of input voltage breaks with input and the described direct current of described overcurrent detecting device
The positive input of road device connects, and the second input of input voltage is connected with the other end of described load Rd,
The outfan of described overcurrent device is connected with described judgment means input, the outfan of described judgment means
It is connected with the control end of described electric-controlled switch K.
Dc circuit breaker circuit based on memristor the most according to claim 1, it is characterised in that
Described overcurrent detecting device is electric current detector, measures transient current by electric current detector, and transmits
To described judgment means.
Dc circuit breaker circuit based on memristor the most according to claim 1, it is characterised in that:
Described judgment means is comparator, and the first input end of described comparator is defeated with described overcurrent detecting device
Going out end to be connected, the second input of described comparator is connected with the working value of setting or inner setting is more dynamic
Work value, the outfan of described comparator is connected with the control end of described electric-controlled switch K.
Dc circuit breaker circuit based on memristor the most according to claim 1, it is characterised in that
Described overcurrent detecting device measures transient current when there is overcurrent, and passes to described judgment means,
Described judgment means receives the signal from described overcurrent detecting device, and compares with setting working value
Relatively, when exceeding setting working value from the transient current signal of described overcurrent detecting device, output controls
Signal gives described electric-controlled switch K, triggers described electric-controlled switch K and switches the access of described PI controller or disconnect
The initial value variable end of described memristor.
Dc circuit breaker circuit based on memristor the most according to claim 1, it is characterised in that
When described electric-controlled switch K receives the actuating signal from described judgment means, described electric-controlled switch K disconnects
The connection of the initial value variable end of described PI controller and described memristor, when electric current flows through memristor, institute
State memristor and quickly transfer high-impedance state to；
When described electric-controlled switch K is not received by the actuating signal from described judgment means, described automatically controlled open
Close K to be connected with the initial value variable end of described memristor by described PI controller, when electric current flows through memristor,
Described memristor maintains low resistance state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362874.0A CN105846393B (en) | 2016-05-26 | 2016-05-26 | A kind of dc circuit breaker circuit based on memristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362874.0A CN105846393B (en) | 2016-05-26 | 2016-05-26 | A kind of dc circuit breaker circuit based on memristor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105846393A true CN105846393A (en) | 2016-08-10 |
| CN105846393B CN105846393B (en) | 2018-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610362874.0A Active CN105846393B (en) | 2016-05-26 | 2016-05-26 | A kind of dc circuit breaker circuit based on memristor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636792A (en) * | 2007-03-13 | 2010-01-27 | 松下电器产业株式会社 | Resistance-variable storage device |
| US20110181347A1 (en) * | 2010-01-28 | 2011-07-28 | Pickett Matthew D | Memristor-protection integrated circuit and method for protection of a memristor during switching |
| CN104218552A (en) * | 2013-05-31 | 2014-12-17 | 中国科学院微电子研究所 | Overvoltage and overcurrent protection element and overvoltage and overcurrent protection circuit |
| CN104242277A (en) * | 2013-06-21 | 2014-12-24 | 中国科学院微电子研究所 | Device for carrying out current-limiting protection on load or output |
| CN205791450U (en) * | 2016-05-26 | 2016-12-07 | 华南理工大学 | A kind of dc circuit breaker circuit based on memristor |
-
2016
- 2016-05-26 CN CN201610362874.0A patent/CN105846393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636792A (en) * | 2007-03-13 | 2010-01-27 | 松下电器产业株式会社 | Resistance-variable storage device |
| US20110181347A1 (en) * | 2010-01-28 | 2011-07-28 | Pickett Matthew D | Memristor-protection integrated circuit and method for protection of a memristor during switching |
| CN104218552A (en) * | 2013-05-31 | 2014-12-17 | 中国科学院微电子研究所 | Overvoltage and overcurrent protection element and overvoltage and overcurrent protection circuit |
| CN104242277A (en) * | 2013-06-21 | 2014-12-24 | 中国科学院微电子研究所 | Device for carrying out current-limiting protection on load or output |
| CN205791450U (en) * | 2016-05-26 | 2016-12-07 | 华南理工大学 | A kind of dc circuit breaker circuit based on memristor |
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| Publication number | Publication date |
|---|---|
| CN105846393B (en) | 2018-04-13 |
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