CN207518564U - The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system - Google Patents
The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system Download PDFInfo
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- CN207518564U CN207518564U CN201721629474.8U CN201721629474U CN207518564U CN 207518564 U CN207518564 U CN 207518564U CN 201721629474 U CN201721629474 U CN 201721629474U CN 207518564 U CN207518564 U CN 207518564U
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Abstract
The soft start and stop of power supply and protective device and electrical system the utility model is related to a kind of Magnetic isolation control semiconductor switch,Belong to space power technical field,The device includes busbar link circuit,Grid control and driving circuit and signal control signal,Busbar link circuit includes high voltage busbar connecting pin,Power semiconductor switch MOSFET,Load pull down resistor,Load input capacitance,Electrical equipment and bus bar circuit ground connecting pin,Grid controls and driving circuit includes the linear regulated power supply of low-voltage direct,Isolating transformer,Low-voltage high-frequency switching tube,With controlling loop line connecting pin and control signal rectification bridge,Signal control signal includes DC control signal input terminal,Pulse drive signal input terminal and electrical equipment enable control signal input,The utility model can apply the power semiconductor switch mosfet under the hundreds of volt high potentials of control signal control in " ground potential ",Realize unicom and the disconnection of busbar and electrical equipment,It can play the role of overvoltage protection simultaneously.
Description
Technical field
The utility model is related to space power technical fields, relate in particular to a kind of Magnetic isolation control semiconductor switch
The soft start and stop of power supply and protective device and electrical system.
Background technology
With the fast development of space technology, the electrical equipment type of spacecraft is more and more, quantity is more and more, power
Increasing, electric power develops to tens of kilowatt from original thousands of watts, and future needs hundreds of kilowatts, even higher use
Electrical power, the voltage of power supply buses is higher and higher, is largely promoting 160V voltage bus using 100V voltage bus now,
250V and 400V busbares are being researched and developed, according to demand, it is expected that following need in busbar even higher development more than 500V.
In ground system, the connection of electrical equipment and busbar voltage is generally using the side such as insurance, air switch, contactor
Method is realized, optocoupler control semiconductor switch can also be used to realize.But in space power technology, using insurance, air switch
And the methods of contactor, volume and weight is too big, the device also without suitable space flight grade；Due to radial displacements benefit, optocoupler
It degenerates quickly or even fails, can not directly be applied under space condition.In existing space power technology, have following existing
There is method to realize that busbar is realized with electrical equipment to connect：
1) directly it is connected using busbar with electrical equipment, intermediate unprotect measure, advantage is, circuit knot few using device
Structure is simple, does not need to additional controller；Shortcoming is fault-free protection and isolation features, and event occurs in such as any electrical equipment
Barrier, can all lead to all electrical equipment failures on the busbar, it is often more important that：During Spacecraft Launch, need by
The low pressure stage if the loading of busbar high voltage is in electrical equipment, can lead to low pressure discharge, lead to equipment fault, therefore, should
Technology is difficult to be used in high voltage busbar.
2) using relay technology, the relay control soft starting circuit identical with ground system, but the system can be used
Volume is big, weight weight, and protection speed is slow, bus-bar system may be caused to break down, the reliability of the technology path is relatively low, it is impossible to
Meet requirement of the spacecraft to power-supply system high reliability.
3) using solid state distribution technology, solid-state power controller is the core devices of solid state distribution technology, solid-state controller
The break-make for realizing circuit by MOSFET and IGBT controls, and the rated current of the solid-state power controller of 28V is in several peaces to tens
In the range of peace, the contactor that supplementary protection function can be used in more powerful distribution is realized.In the situation of high-voltage large current
Under, it using solid state distribution technology, not only needs to provide the accessory power supply of isolation for solid-state power controller, but also need additional protect
The contactor of protective function, circuit is complicated, and volume and weight is larger, and cost is very high.
Most recent two decades, high-power semiconductor switch MOSFET is fast-developing, and MOSFET's has the following advantages that：1) exist
Closed state, tens of megohms of the resistance value of switch mosfet or more；In conducting state, resistance value can be down to several milliohms；
2) MOSFET can be made to be operated in linear work area and saturation workspace by changing grid voltage, the switch conversion time can be small
In 1 microsecond；3) for operating current from number peace to peaces up to a hundred, voltage can reach thousands of volts；4) control mode is very simple, in grid plus
Three ten-day period of hot season voltage, it is possible to realize controller break-make.
According to MOSFET characteristics, the utility model proposes a kind of Magnetic isolations to control the power supply of power semiconductor switch is soft to open
Stop and rapid protecting device and electrical system, to overcome in existing space power technology, the shortcomings that busbar is connect with electrical equipment.
Utility model content
In order to solve various deficiencies of the prior art, it is proposed that a kind of soft start and stop of power supply of Magnetic isolation control semiconductor switch
With protective device and electrical system, which controls power semiconductor switch using Magnetic isolation, in power initiation, realizes prime
High voltage busbar is smoothly connect with electrical equipment；When power supply is closed, realize that prime high voltage busbar is smoothly set with electricity consumption
Back-up from；When over current fault occurs in electrical equipment, prime high voltage busbar and the quick separating of electrical equipment are realized.
To achieve the above object, the utility model provides following technical solution：
A kind of soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device, including busbar link circuit, grid
Control and driving circuit and signal control signal；
The busbar link circuit includes high voltage busbar connecting pin, power semiconductor switch MOSFET, load drop-down electricity
Resistance, with loading input capacitance, electrical equipment and bus bar circuit connecting pin, the high voltage busbar connecting pin are sequentially connected in series power half
Conductor switch MOSFET, with loading pull down resistor and bus bar circuit connecting pin, the load input capacitance and electrical equipment are in parallel
In the both ends of load pull down resistor；
The grid control and driving circuit include the linear regulated power supply of low-voltage direct, Magnetic isolation transformer, low-voltage high-frequency
Switching tube, with controlling loop line connecting pin and control signal rectification bridge, the linear regulated power supply of low-voltage direct are sequentially connected in series
The primary coil of Magnetic isolation transformer, low-voltage high-frequency switching tube and control loop line ground connecting pin, the Magnetic isolation transformer secondary output
The output terminal of coil is connected to control signal rectification bridge ac input end, and the control signal rectification bridge DC output end is connected to
The grid of power semiconductor switch MOSFET；
The signal control signal includes DC control signal input terminal, pulse drive signal input terminal and electrical equipment
Enabled control signal input, the DC control signal input terminal connect the linear regulated power supply of low-voltage direct, and the pulse is driven
Dynamic signal input part connection low-voltage high-frequency switching tube, the electrical equipment enable control signal input connection electrical equipment.
Further, grid control resistance and grid are parallel between the grid and source electrode of the power semiconductor switch MOSFET
Pole controls capacitance.
Further, be connected between connecting pin to the control terminal of the low-voltage high-frequency switching tube and control loop line grid prevent it is quiet
Resistance.
Further, the signal source of the DC control signal input terminal connection linear adjustable, the pulse drive signal
Input terminal connects a high-frequency pulse signal source, and the electrical equipment enables control signal input and connects a level signal
Source.
The utility model also provides a kind of electrical system, including positive voltage busbar, negative voltage busbar loop line and to positive voltage
Busbar, the high-voltage battery accumulation power supply of negative voltage busbar loop line power supply, positive voltage busbar and negative voltage busbar loop line up to
Power supply soft start and stop and protective device of few connection there are one above-mentioned Magnetic isolation control semiconductor switch.
Further, overcurrent detection sensor, over-current signal adjustment circuit and pull-down diode, the overcurrent detection are further included
Sensor is connect respectively with high voltage busbar connecting pin, over-current signal adjustment circuit, and described pull-down diode one end is driven with pulse
Dynamic signal input part connection, the other end are connect with over-current signal adjustment circuit.
Further, there are two Magnetic isolation control semiconductor switch for connection on positive voltage busbar and negative voltage busbar loop line
The soft start and stop of power supply and protective device.
The soft start and stop of power supply of the Magnetic isolation control semiconductor switch of the utility model and the protective device course of work include three
A process:Soft start-up process, soft stopped process and process is quickly protected, the idiographic flow of three processes is as follows：
Soft start-up process：High voltage busbar connecting pin with busbar loop line connecting pin connect hundreds of volts high voltage it is female
Line, the grid no-voltage of power semiconductor switch MOSFET are off state, and resistance value reaches several megohms or more, far
Much larger than the resistance value of load pull down resistor, therefore high voltage busbar voltage is landed mainly on power semiconductor switch MOSFET,
The input voltage of electrical equipment is far smaller than its operating voltage；Under conditions of electrical equipment completes the condition being powered preparation,
Pulse drive signal input terminal applies the signal of a fixed frequency, driving low-voltage high-frequency switching tube work, then in direct current control
Control signal input processed applies a level signal, and the linear regulated power supply output voltage of low-voltage direct is made slowly to increase；Magnetic every
From the signal output that transformer output terminal is slowly risen, believe by the control that signal rectification bridge output one is controlled slowly to rise
Number, which is applied on the grid of power semiconductor switch MOSFET, and the resistance value of power semiconductor switch MOSFET is gradual
Decline, electric current is slowly charged by power semiconductor switch MOSFET to load input capacitance；With power semiconductor switch
The voltage of the grid of MOSFET gradually rises, and power semiconductor switch MOSFET is completely open-minded, and resistance value drops to tens of millis
Ohm, the busbar voltage complete time is in electrical equipment；Finally control signal input is enabled in electrical equipment input a level
Signal, electrical equipment are started to work, and complete soft start-up process.
Soft stopped process：Stop the enable signal that electrical equipment enables control signal input first, electrical equipment stops
It works, then the input signal of stop pulse driving signal input, low-voltage high-frequency switching tube is stopped, in power semiconductor
Control voltage on switch MOSFET grids drops to zero, MOSFET closings, stops, to power supply for electrical equipment, loading in input capacitance
Electric energy discharged by loading pull down resistor, voltage is gradually lowered to zero in electrical equipment, and busbar is detached with electrical equipment, most
Afterwards, stop the control signal of DC control control signal input, the soft stop for completing power supply is stopped.
Quick protection process：In the process of running, bus-bar system detects current value more than setting value, generates overcurrent letter
Number, over-current signal blocks the drive signal of pulse drive signal input terminal, low pressure by pulling down the grid of low-voltage high-frequency switching tube
HF switch pipe is stopped immediately, and control signal rectification bridge stops output, the grid of power semiconductor switch MOSFET and source
Parallel gate control resistance and grid control capacitance electric discharge, grid voltage rapid decrease, power semiconductor switch between pole
The quick cut off circuits of MOSFET realize the quick protection of system.
The beneficial effects of the utility model are：
The soft start and stop of power supply of Magnetic isolation provided by the utility model control semiconductor switch and protective device can " it is electric
Position " applies the power semiconductor switch mosfets under the hundreds of volt high potentials of control signal control, realizes busbar and electrical equipment
Unicom and disconnection, while fuse, air switch and contactor can be played the role of；It is realized and controlled using Magnetic isolation transformer
The transmission of signal meets requirement of the power-supply system in space environment high reliability.
Description of the drawings
Fig. 1 is the Magnetic isolation control soft start and stop of power supply of semiconductor switch of the utility model and protective device circuit diagram；
Fig. 2 is the electrical system circuit diagram of the utility model.
In attached drawing：1- high voltage busbares connecting pin, 2- power semiconductor switch MOSFET, 3- grid control resistance, 4- are born
Pull down resistor is carried, 5- load input capacitances, 6- electrical equipments, 7- DC control signal input terminals, 8- low-voltage directs are linearly adjustable
Power supply, 9- Magnetic isolation transformers, 10- control signal rectification bridges, 11- grids control capacitance, 12- pulse drive signal input terminals,
13- grid Anti-static resistors, 14- low-voltage high-frequency switching tubes, 15- busbar loop lines ground connecting pin, 16- control loop lines ground connecting pin,
17- electrical equipments enable control signal input, 18- positive voltage busbares, 19- negative voltage busbar loop lines, the storage of 20- high-voltage batteries
Energy power supply, 21- first devices, 22- second devices, 23- overcurrent detection sensors, 24- over-current signal adjustment circuits, 25- drop-downs
Diode.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the technical solution of the utility model, with reference to the utility model
Attached drawing carries out the technical solution of the utility model clear, complete description, and based on the embodiment in the application, this field is general
Other similar embodiments that logical technical staff is obtained under the premise of creative work is not made, should all belong to the application
The range of protection.
Embodiment one：
As shown in Figure 1, the soft start and stop of power supply and the protective device of a kind of Magnetic isolation control semiconductor switch, connect including busbar
Circuit, grid control and driving circuit and signal control signal.
Specifically, the busbar link circuit includes high voltage busbar connecting pin 1, power semiconductor switch MOSFET2, bears
With carrying pull down resistor 4, load input capacitance 5, electrical equipment 6 and bus bar circuit connecting pin 15, the high voltage busbar connecting pin
1 is sequentially connected in series power semiconductor switch MOSFET2, with loading pull down resistor 4 and bus bar circuit connecting pin 15, the load input
Capacitance 5 and electrical equipment 6 are parallel to the both ends of load pull down resistor 4, the grid of the power semiconductor switch MOSFET2 and source
Grid control resistance 3 and grid control capacitance 11 are parallel between pole.
It is high that the grid control and driving circuit include the linear regulated power supply 8 of low-voltage direct, Magnetic isolation transformer 9, low pressure
Frequency switching tube 14, with controlling loop line connecting pin 16 and control signal rectification bridge 10, the linear regulated power supply 8 of low-voltage direct is successively
With being connected in series with the primary coil of Magnetic isolation transformer 9, low-voltage high-frequency switching tube 14 and control loop line connecting pin 16, the magnetic every
Output terminal from 9 secondary coil of transformer is connected to 10 ac input end of control signal rectification bridge, the control signal rectification bridge
10 DC output ends are connected to the grid of power semiconductor switch MOSFET2, the control terminal of the low-voltage high-frequency switching tube 14 and
Grid Anti-static resistor 13 is connected between connecting pin 16 with controlling loop line.
The signal control signal includes DC control signal input terminal 7, pulse drive signal input terminal 12 and electricity consumption
Equipment enables control signal input 17, and the DC control signal input terminal 7 connects the linear regulated power supply 8 of low-voltage direct, institute
It states pulse drive signal input terminal 12 and connects low-voltage high-frequency switching tube 14, the electrical equipment enables control signal input 17 and connects
Electrical equipment 6 is connect, the DC control signal input terminal 7 connects the signal source of linear adjustable, and the pulse drive signal is defeated
Enter 12 one high-frequency pulse signal source of connection of end, the electrical equipment enables control signal input 17 and connects a level signal
Source.
The soft start and stop of power supply of the Magnetic isolation control semiconductor switch of the utility model and the protective device course of work include three
A process:Soft start-up process, soft stopped process and process is quickly protected, the idiographic flow of three processes is as follows：
Soft start-up process：In high voltage busbar connecting pin 1 and busbar loop line connecting pin 15 connects the high voltage of hundreds of volts
Busbar, the grid no-voltage of power semiconductor switch MOSFET2 are off state, and resistance value reaches several megohms or more,
It is far longer than the resistance value of load pull down resistor 4, therefore the landing of high voltage busbar voltage is mainly in power semiconductor switch MOSFET2
On, the input voltage of electrical equipment 6 is far smaller than its operating voltage；When electrical equipment 6 completes the condition of the condition being powered preparation
Under, apply the signal of a fixed frequency in pulse drive signal input terminal 12, driving low-voltage high-frequency switching tube 14 works, then
DC control control signal input 7 apply a level signal, make linear 8 output voltage of regulated power supply of low-voltage direct it is slow on
It rises；It is slow by signal rectification bridge 10 is controlled to export one in the signal output that 9 output terminal of Magnetic isolation transformer is slowly risen
The control signal of rising, the signal are applied on the grid of power semiconductor switch MOSFET2, power semiconductor switch
The resistance value of MOSFET2 is gradually reduced, and electric current is slowly charged by power semiconductor switch MOSFET2 to load input capacitance 5；
As the voltage of the grid of power semiconductor switch MOSFET2 gradually rises, power semiconductor switch MOSFET2 is completely open-minded,
Its resistance value drops to tens of milliohms, and the busbar voltage complete time is in electrical equipment 6；Finally control is enabled in electrical equipment
Signal input part 17 inputs a level signal, and electrical equipment 6 is started to work, and completes soft start-up process.
Soft stopped process：Stop the enable signal that electrical equipment enables control signal input 17 first, electrical equipment 6 is stopped
It only works, then the input signal of stop pulse driving signal input 12, low-voltage high-frequency switching tube 14 is stopped, in work(
Control voltage on rate semiconductor switch MOSFET2 grids drops to zero, MOSFET closings, stops powering to electrical equipment 6, loads
Electric energy in input capacitance 5 is discharged by loading pull down resistor 4, and voltage is gradually lowered to zero in electrical equipment 6, busbar and electricity consumption
Equipment 6 detaches, and finally, stops the control signal of DC control control signal input 7, the soft stop for completing power supply is stopped.
Quick protection process：In the process of running, bus-bar system detects current value more than setting value, generates overcurrent letter
Number, over-current signal blocks the drive signal of pulse drive signal input terminal 12 by pulling down the grid of low-voltage high-frequency switching tube 14,
Low-voltage high-frequency switching tube 14 is stopped immediately, and control signal rectification bridge 10 stops output, power semiconductor switch MOSFET2's
Parallel gate control resistance 3 and grid control capacitance 11 discharge between grid and source electrode, and grid voltage rapid decrease, power is partly led
Body switchs the quick cut off circuits of MOSFET2, realizes the quick protection of system.
The soft start and stop of power supply of the Magnetic isolation control semiconductor switch of the utility model and protective device can be in " ground potentials "
Apply the power semiconductor switch mosfet 2 under the hundreds of volt high potentials of control signal control, realize busbar and the connection of electrical equipment 6
On and off is opened, while can play the role of fuse, air switch and contactor；It is realized and controlled using Magnetic isolation transformer 9
The transmission of signal meets requirement of the power-supply system in space environment high reliability.
Embodiment two：
As shown in Fig. 2, a kind of electrical system, including positive voltage busbar 18, negative voltage busbar loop line 19 and to positive voltage mother
The high-voltage battery accumulation power supply 20 that line 18, negative voltage busbar loop line 19 are powered, wherein, the high-voltage battery accumulation power supply 20
To positive voltage busbar 18 and supply voltage 400V to the 500V of negative voltage busbar loop line 19, in positive voltage busbar 18 and negative voltage
The soft start and stop of power supply and protective device that an above-mentioned Magnetic isolation controls semiconductor switch are at least connected on busbar loop line 19,
In the present embodiment, there are two Magnetic isolation control semiconductor switch for connection on positive voltage busbar 18 and negative voltage busbar loop line 19
The soft start and stop of power supply and protective device, respectively first device 21 and second device 22, certainly in other embodiments, Magnetic isolation control
The soft start and stop of power supply of semiconductor switch processed and protective device can be set more.
The electrical system further includes overcurrent detection sensor 23, over-current signal adjustment circuit 24 and pull-down diode 25,
The overcurrent detection sensor 23 is connect respectively with high voltage busbar connecting pin 1, over-current signal adjustment circuit 24, the drop-down
Diode one end is connect with pulse drive signal input terminal 12, and the other end is connect with over-current signal adjustment circuit 24, the overcurrent
Detection sensor 23, for monitoring the current signal of 1 front end of high voltage busbar connecting pin, the over-current signal adjustment circuit (24)
Effect with pull-down diode 25 is：When electric current is more than setting value, over-current signal adjustment circuit 24 exports low level signal, passes through
Pull-down diode 25 blocks the drive signal of pulse drive signal input terminal 12, and low-voltage high-frequency switching tube 14 is stopped immediately,
Realize overcurrent protection.
The electric system is applied in spacecraft, before Spacecraft Launch, due to high-voltage battery accumulation power supply 20 not
It can stop output, 19 continued power of positive voltage busbar 18 and negative voltage busbar loop line.During to emit spacecraft safety
Process in the low pressure stage, pulse drive signal input terminal 12, DC control control signal input 7 and electrical equipment make
The signal of energy control signal input 17 is stopped, and 6 input voltage of electrical equipment is very low, can prevent low pressure discharge from damaging
Bad system.When spacecraft enters high vacuum space, by the utility model soft start-up process successively in pulse drive signal input terminal
12nd, DC control control signal input 7 and electrical equipment enable the application signal of control signal input 17, complete soft start.
In 6 operational process of electrical equipment, overcurrent detection sensor 23 monitors the electric current of 1 front end of high voltage busbar connecting pin
Signal, if current signal is more than setting protection value, then over-current signal adjustment circuit 24 exports a low level, passes through pull-down diode
25 block the drive signal of pulse drive signal input terminal 12, and low-voltage high-frequency switching tube 14 is stopped immediately, power semiconductor
The grid voltage rapid decrease of MOSFET2 is switched, the Fault Isolation of electrical equipment 6 is completed in 1 to 10 microseconds, realizes equipment
Quick protection.
If spacecraft needs to enter energy-saving mode, then can it is female with positive voltage to be completed by soft stopped process for electrical equipment 6
Line 18 detaches, and reduces the power consumption of system；Or spacecraft needs to return to ground, need to complete electrical equipment according to soft stopped process
6 detach with to positive voltage busbar 18, prevent spacecraft from being damaged by the low pressure stage.
The utility model is described in detail above, it is described above, only the preferred embodiment of the utility model and
, it is when the utility model practical range cannot be limited, i.e., all to make equivalent changes and modifications according to the application range, it all should still belong to this
In utility model covering scope.
Claims (7)
1. the soft start and stop of power supply and the protective device of a kind of Magnetic isolation control semiconductor switch, it is characterised in that：It is connected including busbar
Circuit, grid control and driving circuit and signal control signal；
The busbar link circuit includes high voltage busbar connecting pin (1), power semiconductor switch MOSFET (2), load drop-down
Resistance (4), with loading input capacitance (5), electrical equipment (6) and bus bar circuit connecting pin (15), the high voltage busbar connection
End (1) is sequentially connected in series power semiconductor switch MOSFET (2), with loading pull down resistor (4) and bus bar circuit connecting pin (15), institute
It states load input capacitance (5) and electrical equipment (6) is parallel to the both ends of load pull down resistor (4)；
It is high that the grid control and driving circuit include the linear regulated power supply of low-voltage direct (8), Magnetic isolation transformer (9), low pressure
Frequency switching tube (14), with controlling loop line connecting pin (16) and control signal rectification bridge (10), the linear adjustable electric of low-voltage direct
Source (8) connects with being sequentially connected in series the primary coil of Magnetic isolation transformer (9), low-voltage high-frequency switching tube (14) and control loop line
It holds (16), the output terminal of Magnetic isolation transformer (9) secondary coil is connected to control signal rectification bridge (10) ac input end,
Described control signal rectification bridge (10) DC output end is connected to the grid of power semiconductor switch MOSFET (2)；
The signal control signal includes DC control signal input terminal (7), pulse drive signal input terminal (12) and electricity consumption
Equipment enables control signal input (17), and the DC control signal input terminal (7) connects the linear regulated power supply of low-voltage direct
(8), pulse drive signal input terminal (12) the connection low-voltage high-frequency switching tube (14), the electrical equipment enable control signal
Input terminal (17) connection electrical equipment (6).
2. the soft start and stop of power supply of Magnetic isolation control semiconductor switch according to claim 1 and protective device, feature exist
In：Grid control resistance (3) and grid control are parallel between the grid and source electrode of the power semiconductor switch MOSFET (2)
Capacitance (11).
3. the soft start and stop of power supply of Magnetic isolation control semiconductor switch according to claim 2 and protective device, feature exist
In：Grid antistatic electricity is connected between the control terminal of the low-voltage high-frequency switching tube (14) and with controlling loop line connecting pin (16)
It hinders (13).
4. the soft start and stop of power supply of Magnetic isolation control semiconductor switch according to claim 3 and protective device, feature exist
In：The signal source of DC control signal input terminal (7) the connection linear adjustable, the pulse drive signal input terminal (12)
A high-frequency pulse signal source is connected, the electrical equipment enables control signal input (17) and connects a level signal source.
5. a kind of electrical system, including positive voltage busbar (18), negative voltage busbar loop line (19) and to positive voltage busbar (18), negative
The high-voltage battery accumulation power supply (20) of voltage bus loop line (19) power supply, it is characterised in that：In positive voltage busbar (18) and bear
One is at least connected on voltage bus loop line (19) such as the Magnetic isolation control semiconductor switch as described in claim 1-4 is any
The soft start and stop of power supply and protective device.
6. electrical system according to claim 5, it is characterised in that：Further include overcurrent detection sensor (23), overcurrent letter
Number adjustment circuit (24) and pull-down diode (25), the overcurrent detection sensor (23) respectively with high voltage busbar connecting pin
(1), over-current signal adjustment circuit (24) connects, and described pull-down diode one end is connect with pulse drive signal input terminal (12),
The other end is connect with over-current signal adjustment circuit (24).
7. electrical system according to claim 6, it is characterised in that：In positive voltage busbar (18) and negative voltage busbar loop line
(19) power supply soft start and stop and protective device of the connection there are two Magnetic isolation control semiconductor switch on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721629474.8U CN207518564U (en) | 2017-11-29 | 2017-11-29 | The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721629474.8U CN207518564U (en) | 2017-11-29 | 2017-11-29 | The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system |
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| CN207518564U true CN207518564U (en) | 2018-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947773A (en) * | 2017-11-29 | 2018-04-20 | 中国工程物理研究院应用电子学研究所 | The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system |
-
2017
- 2017-11-29 CN CN201721629474.8U patent/CN207518564U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947773A (en) * | 2017-11-29 | 2018-04-20 | 中国工程物理研究院应用电子学研究所 | The soft start and stop of power supply of Magnetic isolation control semiconductor switch and protective device and electrical system |
| CN107947773B (en) * | 2017-11-29 | 2024-05-31 | 中国工程物理研究院应用电子学研究所 | Power supply soft start-stop and protection device for magnetic isolation control semiconductor switch and electric system |
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