CN109302059A - A kind of quick leadage circuit of high voltage direct current source output - Google Patents
A kind of quick leadage circuit of high voltage direct current source output Download PDFInfo
- Publication number
- CN109302059A CN109302059A CN201811457751.0A CN201811457751A CN109302059A CN 109302059 A CN109302059 A CN 109302059A CN 201811457751 A CN201811457751 A CN 201811457751A CN 109302059 A CN109302059 A CN 109302059A
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- China
- Prior art keywords
- load
- main power
- control
- power inverter
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/1566—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of high voltage direct current sources to export quick leadage circuit, and the defeated high voltage direct current source includes main power inverter and control module, and the main power inverter is used for apparatus of load output voltage；The control module is used to control the size of main power inverter output voltage, it further include the electronic load for realizing pulling load current size dynamic control, the electronic load is connected to output both ends of main power inverter and in parallel with apparatus of load, the control terminal of the electronic load control terminal link control module, the control module is used to export different control voltage to electronic load according to the different working condition that apparatus of load is set, the electronic load is used to draw to carry with different pulling load currents according to different control voltage that the output voltage of main power inverter to be made to transform to the working condition of setting.The case where electronic load circuit of the invention can change according to output voltage and load, effectively adjusts the drawing loading capability of electronic load, greatly shortens discharge cycle.
Description
Technical field
The invention belongs to circuit applied technical fields, and in particular to a kind of quick leadage circuit of high voltage direct current source output.
Background technique
In recent years, high-voltage DC power supply is exported to higher voltage and higher power density develops rapidly, and client is to device
Experience requirements be continuously improved.Therefore, device how is made to have good dynamic effect in adjustable output voltage range, simultaneously
Again can be after device power-off, output kV level voltage can be rapidly decreased to 0V, to ensure that customer electricity safety, this problem seem
It is important and urgent.
Currently, the big more options of product on the market pile up numerous discharge resistances between output BUS+, BUS-, to reach
The purpose that output capacitance is discharged after device power-off.But this mode have the shortcomings that it is obvious:
The first, conductive discharge process is uncontrollable.When discharge resistance resistance value is fixed, with letting out for output capacitance electricity
It puts, output voltage decline, the ability of the vent discharge electricity capacity of resistance constantly weakens, and generates longer hangover time.
The second, discharge resistance volume is bigger than normal.It is exported in high voltage direct current source kV rank, if desired tens mA, which release to draw, carries energy
Power.According on the market resistor power, resistance value collocation, need the series-parallel of multiple resistance, this obviously with the hair of high power density
It runs counter in exhibition direction.
Third, the dynamic effect of resistance are bad.In the process of running, output voltage can constantly change, defeated in high voltage direct current source
The size loaded out can also constantly change, this requires the drawing loading capability of bleeder resistance constantly accordingly to be adjusted according to output dynamic change
Whole, the traditional resistor mode of releasing is difficult to realize.
Summary of the invention
The object of the invention is to provide a kind of high voltage direct current source output to solve deficiency existing for above-mentioned background technique
Quick leadage circuit effectively adjusts the drawing loading capability of electronic load the case where can changing according to load.
The technical solution adopted by the present invention is that: a kind of quick leadage circuit of high voltage direct current source output, the high voltage direct current source
Defeated includes main power inverter and control module, and the main power inverter is used for apparatus of load output voltage；The control
Module is used to control the size of main power inverter output voltage, further includes electronic load, the electronic load is connected to main function
The output both ends of rate converter are simultaneously in parallel with apparatus of load, the control terminal of the electronic load control terminal link control module, institute
Control module is stated to be used to export different control voltage according to the different working condition that apparatus of load is set to electronic load, it is described
Electronic load is used to draw to carry with different pulling load currents according to different control voltage to become the output voltage of main power inverter
Change to the working condition of setting.
Further, the electronic load includes metal-oxide-semiconductor, sampling resistor R14 and for controlling metal-oxide-semiconductor grid voltage size
Control circuit, the drain electrode of the metal-oxide-semiconductor connects main power inverter output head anode, and the source electrode of metal-oxide-semiconductor connects sampling resistor
The one end R14, the output end of the grid connection control circuit of metal-oxide-semiconductor, the sampling resistor R14 other end connect main power inverter
The input terminal of negative pole of output end and control circuit, the control terminal of the control terminal link control module of the control circuit.
Further, the control circuit includes amplifier and comparator, resistance R2, resistance R3, resistance R12, resistance R15
Sampling resistor R14 is connected to by resistance R15 with the reverse input end of resistance R17, the amplifier and main power inverter is defeated
Between outlet cathode, the simulation of the noninverting input link control module of amplifier, the output end of amplifier, which is connected to, to be compared
The negative input end of device；The simulation of the positive input terminal link control module of the comparator, the output end of comparator connects metal-oxide-semiconductor
Grid, the control terminal of the control module, reference voltage output end and simulation ground pass through resistance R2, resistance R3 and resistance respectively
R17 is connected to the negative input end of comparator, and the resistance R12 is connected between the reverse input end of amplifier and output end.
It further, further include sampling module, the sampling module is for the main power inverter output of real-time sampling
Voltage and current is sent to control module, and the control module carries out feedback regulation control for voltage and current based on the received
The output voltage size of main power inverter.
The present invention works with metal-oxide-semiconductor in one electronic load circuit of characteristic Design of linear zone, can be according to output voltage
And the case where load variation, the drawing loading capability of electronic load is effectively adjusted, to quickly change main power inverter output electricity
The size of pressure, has the advantage that
First, electronic load improves the flexibility and adaptivity of system control: compared to consolidating for traditional resistor load
Qualitative, electronic load can be loaded according to high voltage direct current source and the characteristic of converter itself, adjusts the size of pulling load current in real time, makes
Control is smoothly easily achieved, and under the premise of not needing to make change to hardware, greatly shortens regulating cycle.
Second, electronic load draw carrier have preferable continuity: when converter after a loss of power, be supported on traditional resistor
When drawing load, when can be reduced to relatively low value in the presence of very long hangover time, especially output voltage, this makes client's use feeling
By bad, electronic load of the present invention can be drawn with a constant electric current and be carried, keep output voltage fast before accessory power supply power down
The state that prompt drop is needed to 0V or client.
Detailed description of the invention
Fig. 1 is the schematic diagram of leadage circuit of the present invention.
Fig. 2 is the circuit diagram of electronic load of the present invention.
Fig. 3 is the flow chart of leadage circuit of the present invention work.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this hair is well understood
It is bright, but they limiting the invention.
As shown in Figure 1 and Figure 2, a kind of high voltage direct current source of the present invention exports quick leadage circuit, the defeated packet in high voltage direct current source
Main power inverter and control module are included, the main power inverter is used for apparatus of load output voltage；The control module
It further include the Electronic Negative for realizing pulling load current size dynamic control for controlling the size of main power inverter output voltage
It carries, the electronic load is connected to the output both ends of main power inverter and, the electronic load control in parallel with apparatus of load
The control terminal of link control module is held, the control module is used for different working condition (the i.e. client set according to apparatus of load
The working condition needed) to electronic load, the electronic load is used for according to different control electricity the different control voltage of output
Pressure, which draws to carry with different pulling load currents, makes the output voltage of main power inverter transform to the working condition of setting as early as possible.
In above scheme, electronic load includes metal-oxide-semiconductor Q1, sampling resistor R14 and for controlling metal-oxide-semiconductor grid voltage size
Control circuit, the drain electrode of the metal-oxide-semiconductor Q1 connects main power inverter output head anode, and the source electrode of metal-oxide-semiconductor Q1 connects sampling
The one end resistance R14, the output end of the grid connection control circuit of metal-oxide-semiconductor Q1, the sampling resistor R14 other end connect main power
The input terminal of converter output terminal cathode and control circuit, the control terminal of the control terminal link control module of the control circuit.
In above scheme, control circuit includes amplifier U1B and comparator U1A, resistance R2, resistance R3, resistance R12, electricity
Resistance R15 and resistance R17, the reverse input end of the amplifier U1B are connected to sampling resistor R14 and main power by resistance R15
Between converter output terminal cathode, the simulation of the noninverting input link control module of amplifier U1B, amplifier U1B's is defeated
Outlet is connected to the negative input end of comparator U1A by resistance R7；The positive input terminal link control module of the comparator U1A
Simulation ground, the grid of the output end connection metal-oxide-semiconductor Q1 of comparator U1A, the control terminal of the control module, reference voltage output end
It is connected to the negative input end of comparator U1A by resistance R2, resistance R3 and resistance R17 respectively with simulation, the resistance R12 connects
It connects between the reverse input end and output end of amplifier U1B.
It further include sampling module in above scheme, the sampling module is for the main power inverter output of real-time sampling
Voltage and current is sent to control module, and the control module carries out feedback regulation control for voltage and current based on the received
The output voltage size of main power inverter.
Electronic load of the present invention is additionally provided with corresponding peripheral circuit, can make metal-oxide-semiconductor Q1 in electronic load, sampling resistor R14,
Amplifier U1B, comparator U1A work are more stable, as shown in Fig. 2, the peripheral circuit is conventional series and parallel compensated resistance, capacitance group
At the circuits such as filtering, pressure stabilizing.
Electronic load of the present invention, which is realized, draws the principle of loading capability as follows:
When main power inverter when high voltage direct current source normally exports, metal-oxide-semiconductor Q1 and sampling resistor R14 are connected in parallel on equipment and bear
Both ends are carried, the power section for carrying circuit is drawn as electronic load, metal-oxide-semiconductor Q1 works in linear zone.
When can be seen that the work of high voltage direct current source from control flow shown in Fig. 3, control module may according to apparatus of load
DA value is subdivided into several specific numerical value by the state of work from small to large, when client needs to make apparatus of load work in correspondence
Working condition when, different DA values will be distributed to electronic load according to the principle of agreement by control module.
Assuming that a certain moment, the pulling load current of electronic load is I0, the control voltage that control module issues is DA, then controls
Voltage DA and pulling load current I0Relationship it is as follows:
Client can make its work under CC, CV mode, export under different mode during using high voltage direct current source
Voltage swing is different, therefore control module can provide different DA values, and such electronic load can carry electricity with different constant drawings
Stream, which is drawn, to be carried, so that the operating mode for needing main power inverter output voltage Fast transforms, greatly improves what client used
Effect.
The present invention works with metal-oxide-semiconductor in one electronic load circuit of characteristic Design of linear zone, can be according to output voltage
And the case where load variation, the drawing loading capability of electronic load is effectively adjusted, to change main power inverter output voltage
Size.
Electronic load of the present invention improves the flexibility and adaptivity of system control, compared to consolidating for traditional resistor load
Qualitative, electronic load can be loaded according to high voltage direct current source and the characteristic of main power inverter itself, adjusts pulling load current in real time
Size is easily achieved control smoothly, and under the premise of not needing to make change to hardware, greatly shortens debugging cycle.
Electronic load of the present invention draws carrier to have preferable continuity, when main power inverter after a loss of power, with traditional electricity
When resistance is supported on drawing load, when can be reduced to relatively low value in the presence of very long hangover time, especially output voltage, this makes visitor
Family use feeling is bad, and electronic load of the present invention can be drawn with a constant electric current and be carried, made defeated before accessory power supply power down
Voltage is quickly down to the state that 0V or client need out.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (4)
1. a kind of high voltage direct current source exports quick leadage circuit, the defeated high voltage direct current source includes main power inverter and control mould
Block, the main power inverter are used for apparatus of load output voltage；The control module is defeated for controlling main power inverter
The size of voltage out, it is characterised in that: including electronic load, the electronic load is connected to the output both ends of main power inverter
And, the control terminal of the electronic load control terminal link control module in parallel with apparatus of load, the control module are used for basis
The different working condition of apparatus of load setting exports different control voltage to electronic load, and the electronic load is used for according to not
Same control voltage, which draws to carry with different pulling load currents, makes the output voltage of main power inverter transform to the working condition of setting.
2. high voltage direct current source according to claim 1 exports quick leadage circuit, it is characterised in that: the electronic load packet
Include metal-oxide-semiconductor, sampling resistor R14 and the control circuit for controlling metal-oxide-semiconductor grid voltage size, the drain electrode connection of the metal-oxide-semiconductor
Main power inverter output head anode, the source electrode of metal-oxide-semiconductor connect the one end sampling resistor R14, and the grid of metal-oxide-semiconductor connects control circuit
Output end, the sampling resistor R14 other end connects the input terminal of main power inverter negative pole of output end and control circuit, institute
State the control terminal of the control terminal link control module of control circuit.
3. high voltage direct current source according to claim 2 exports quick leadage circuit, it is characterised in that: the control circuit packet
Include amplifier and comparator, resistance R2, resistance R3, resistance R12, resistance R15 and resistance R17, the reversed input of the amplifier
End is connected between sampling resistor R14 and main power inverter negative pole of output end by resistance R15, the noninverting input of amplifier
The simulation of link control module, the output end of amplifier is connected to the negative input end of comparator；The positive input of the comparator
With holding the simulation of link control module, the grid of the output end connection metal-oxide-semiconductor of comparator, the control terminal of the control module, base
Quasi- voltage output end and simulation ground are connected to the negative input end of comparator by resistance R2, resistance R3 and resistance R17 respectively, described
Resistance R12 is connected between the reverse input end of amplifier and output end.
4. high voltage direct current source according to claim 1 exports quick leadage circuit, it is characterised in that: further include sampling mould
Block, voltage and current of the sampling module for the main power inverter output of real-time sampling are sent to control module, the control
Molding block carries out the output voltage size of the main power inverter of feedback regulation control for voltage and current based on the received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457751.0A CN109302059A (en) | 2018-11-30 | 2018-11-30 | A kind of quick leadage circuit of high voltage direct current source output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457751.0A CN109302059A (en) | 2018-11-30 | 2018-11-30 | A kind of quick leadage circuit of high voltage direct current source output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109302059A true CN109302059A (en) | 2019-02-01 |
Family
ID=65142350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811457751.0A Pending CN109302059A (en) | 2018-11-30 | 2018-11-30 | A kind of quick leadage circuit of high voltage direct current source output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109302059A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274088A (en) * | 1999-05-18 | 2000-11-22 | 刘英彰 | DC electronic load simulator |
| CN107888055A (en) * | 2017-11-27 | 2018-04-06 | 常州同惠电子股份有限公司 | Improve the drive circuit realization device of power tube dynamic property |
| CN108508379A (en) * | 2018-06-07 | 2018-09-07 | 艾乐德电子（南京）有限公司 | A kind of program control type electronic load device that can generate voltage output and test method |
| CN209088814U (en) * | 2018-11-30 | 2019-07-09 | 武汉精能电子技术有限公司 | A kind of quick leadage circuit of high voltage direct current source output |
-
2018
- 2018-11-30 CN CN201811457751.0A patent/CN109302059A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274088A (en) * | 1999-05-18 | 2000-11-22 | 刘英彰 | DC electronic load simulator |
| CN107888055A (en) * | 2017-11-27 | 2018-04-06 | 常州同惠电子股份有限公司 | Improve the drive circuit realization device of power tube dynamic property |
| CN108508379A (en) * | 2018-06-07 | 2018-09-07 | 艾乐德电子（南京）有限公司 | A kind of program control type electronic load device that can generate voltage output and test method |
| CN209088814U (en) * | 2018-11-30 | 2019-07-09 | 武汉精能电子技术有限公司 | A kind of quick leadage circuit of high voltage direct current source output |
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