CN107017791A - High-voltage great-current tests power supply - Google Patents
High-voltage great-current tests power supply Download PDFInfo
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- CN107017791A CN107017791A CN201710445807.XA CN201710445807A CN107017791A CN 107017791 A CN107017791 A CN 107017791A CN 201710445807 A CN201710445807 A CN 201710445807A CN 107017791 A CN107017791 A CN 107017791A
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
-
- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
Power supply is tested the present invention relates to a kind of high-voltage great-current, it includes can not control rectifying circuit；Also include full-bridge controlled resonant converter and boosting output circuit；The full-bridge controlled resonant converter include being used for by can not the DC pulse moving voltage of control rectifying circuit output be converted to the full-bridge converter of ac square-wave voltage and resonance link for producing resonant condition, the resonant frequency of the resonance link is adapted to the switching frequency of full-bridge converter, to cause full-bridge converter to work in Zero Current Switch state, and full-bridge controlled resonant converter is caused to realize constant current output；The output voltage of full-bridge controlled resonant converter can be increased to export after required voltage by boosting output circuit.The present invention can meet the power semiconductor modular dynamically high voltage of test and high current demand, can shorten the storage capacitor charging interval again, accelerate test speed, improve measuring accuracy.
Description
Technical field
Power supply is tested the present invention relates to one kind, especially a kind of high-voltage great-current test power supply belongs to the skill of test power supply
Art field.
Background technology
Electric capacity charging technique has constant-voltage charge and constant-current charge according to charging modes, has power frequency to fill according to system operating frequency
Electricity and high frequency charging etc..At present, it is the more commonly used to have three kinds of charging modes：Power frequency constant-voltage charge, power frequency resonance type charging with
And high frequency charging.
Power frequency high voltage charging can only be constant-voltage charge pattern, and the advantage of power frequency high voltage charging is that structure is most simple, it is only necessary to
One auto-transformer and capacitance group are with regard to that can export the big pulse current of high pressure, and the shortcoming of power frequency high voltage charging is charging current initial stage
Excessive, the later stage is slow, and it is in non-linear that voltage, which rises, and charging rate is slow, and charge efficiency is low.The advantage of power frequency LC resonance charge with constant current
It is that charging current is constant, small, charging voltage linear rise is impacted to charging capacitor group and power network, charging rate is fast, and power frequency LC is humorous
The shortcoming of constant-current charge of shaking is that Industrial Frequency Transformer and frequency inductance volume weight are excessive, charging accuracy and voltage stabilizing ability.High frequency
Charging can both be operated in constant voltage mode or can be in constant current mode, and the magnetic device volume such as high frequency transformer is small, charging essence
Degree is high, and voltage stabilizing ability is strong.
The operation principle of semi-bridge inversion type DC high-voltage power supply is that electric main rectification is turned into direct current, then through more than half
Bridge inverter circuit is transformed to ac square wave, then is boosted by high frequency transformer, and high pressure is exported after transformer secondary rectifying and wave-filtering.
Output voltage is high-precision and a wide range of adjustable by can guarantee that after closed-loop control of sampling, and exports energy storage on the capacitor, when
When testing high-power MOS FET or IGBT module, energy quick release formation high-voltage great-current pulse, works as work(on electric capacity
When rate module is turned off, it can continue to charge to energy-storage capacitor.Semi-bridge inversion type DC high-voltage power supply is high frequency electric source, is overcome
Traditional power frequency charge power supply volume excessive shortcoming, but hard switching state is can only operate in, so power-efficient is relatively low,
EMI problems are than more serious.
To sum up, for existing power-supply system, it is primarily present following deficiency：
1), using power frequency auto-transformer directly to city's electric boost, subsequent rectifying conversion is direct current, concatenates current-limiting resistance
It is the power supply of most traditional approach to the high voltage power supply that output storage capacitor charges.The charging modes are although simple in construction, it is easy to
Realize, but volume is heavy, is unfavorable for test system integrated.And belonging to constant-voltage charge, charging rate is slow, is unfavorable for improving and surveys
Try speed.
2), using high frequency conversion scheme, system bulk can be substantially reduced, while accurately controlling output by high-speed closed loop
Voltage, it is significant for test system.But general hard switching power supply EMI is serious, to test system other parts shadow
Sound is larger, is the major reason for causing measuring accuracy not high.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art to test power supply there is provided a kind of high-voltage great-current, its
The power semiconductor modular dynamically high voltage of test and high current demand can be met, the storage capacitor charging interval can be shortened again,
Accelerate test speed, improve measuring accuracy.
The technical scheme provided according to the present invention, the high-voltage great-current tests power supply, including for electric main to be turned
Be changed to DC pulse moving voltage can not control rectifying circuit；Also include with can not the full-bridge controlled resonant converter that is connected of control rectifying circuit with
And the boosting output circuit being connected with the full-bridge controlled resonant converter；
The full-bridge controlled resonant converter include be used for by can not control rectifying circuit output DC pulse moving voltage be converted to friendship
Flow the full-bridge converter and resonance link for producing resonant condition of square-wave voltage, the resonant frequency of the resonance link with
The switching frequency adaptation of full-bridge converter, to cause full-bridge converter to work in Zero Current Switch state, and causes full-bridge resonance
Converter realizes constant current output；The output voltage of full-bridge controlled resonant converter can be increased to after required voltage by boosting output circuit
Output.
The full-bridge converter includes switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4, and resonance link includes
Resonant capacitance Cb and resonant inductance L1；
The drain electrode end of the switching tube Q1 and switching tube Q4 drain electrode end, diode D1 cathode terminal and diode D4
Cathode terminal, switching tube Q1 source terminal and diode D1 anode tap, switching tube Q2 drain electrode end, diode D2 cathode terminal with
And resonant inductance L1 one end connection；
Switching tube Q2 source terminal and the anode of diode D2 anode tap, switching tube Q3 source terminal and diode D3
End connection, switching tube Q3 drain electrode end and diode D3 cathode terminal, switching tube Q4 source terminal, diode D4 cathode terminal with
And resonant capacitance Cb one end connection.
The boosting output circuit includes step-up transformer T1 and step-up transformer T2；
The Same Name of Ends of step-up transformer T1 primary coils, the Same Name of Ends of step-up transformer T2 primary coils are and resonant capacitance
Cb other end connection, non-same polarity, the non-same polarity of step-up transformer T2 primary coils of step-up transformer T1 primary coils
The other end with resonant inductance L1 is connected；Step-up transformer T1 secondary coils connect the first current rectifying and wave filtering circuit, transformation of boosting
Device T2 secondary coils connect the second current rectifying and wave filtering circuit, and the output voltage of the first current rectifying and wave filtering circuit and the second rectifying and wave-filtering electricity
Road output voltage series connection.
First current rectifying and wave filtering circuit includes diode D5, diode D6, diode D7 and diode D8；Second is whole
Flowing filter circuit includes diode D9, diode D10, diode D11 and diode D12；
Diode D5 anode tap, diode D7 cathode terminal connect with the Same Name of Ends of step-up transformer T1 secondary coils
Connect, diode D5 cathode terminal is connected with one end of diode D6 cathode terminal and electric capacity C1, diode D7 anode tap with
Diode D8 anode tap and the electric capacity C1 other end, diode D9 cathode terminal, diode D10 cathode terminal and electric capacity
C1 one end connection, diode D8 cathode terminal and non-same polarity, the diode D6 anode of step-up transformer T1 secondary coils
End connection；
The cathode terminal of diode D9 anode tap and the Same Name of Ends of step-up transformer T2 secondary coils and diode D11 connects
Connect, diode D11 anode tap is connected with the other end of diode D12 anode tap and electric capacity C2, diode D12 negative electrode
End is connected with step-up transformer T2 non-same polarity and diode D10 anode tap.
Advantages of the present invention：The resonant frequency of resonance link is adapted to the switching frequency of full-bridge converter, to cause full-bridge
Converter works in Zero Current Switch state, and causes full-bridge controlled resonant converter to realize constant current output, and storage capacitor can be adopted
Charged with current constant mode, can with open loop operation, without closed loop current stabilization, while having output overloading protection feature, it is to avoid tradition
The various weakness of voltage source charging, accelerate charging rate, test significant for power MOSFET, IGBT.Full-bridge is humorous
The converter that shakes can realize switching tube zero current turning-on and no-voltage, switch off current, improve power-efficient while improving EMI
Characteristic, reduces the influence to test system other parts, improves measuring accuracy.
Brief description of the drawings
Fig. 1 is structured flowchart of the invention.
Fig. 2 is the circuit theory diagrams of full-bridge controlled resonant converter of the present invention and boosting output circuit.
Fig. 3 is the equivalent circuit diagram of series resonant circuit of the present invention.
Fig. 4 is the schematic diagram of series resonant circuit current transmission characteristic.
Fig. 5 is operating diagram of the full-bridge converter of the present invention in discontinuous conduct mode characteristic.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1：In order to be able to meet the power semiconductor modular dynamically high voltage of test and high current demand, and can contract
In the short storage capacitor charging interval, accelerate test speed, improve measuring accuracy, the present invention includes being used to be converted to electric main directly
Flow pulsating volage can not control rectifying circuit；Also include with can not the full-bridge controlled resonant converter that is connected of control rectifying circuit and with institute
State the boosting output circuit of full-bridge controlled resonant converter connection；
The full-bridge controlled resonant converter include be used for by can not control rectifying circuit output DC pulse moving voltage be converted to friendship
Flow the full-bridge converter and resonance link for producing resonant condition of square-wave voltage, the resonant frequency of the resonance link with
The switching frequency adaptation of full-bridge converter, to cause full-bridge converter to work in Zero Current Switch state, and causes full-bridge resonance
Converter realizes constant current output；The output voltage of full-bridge controlled resonant converter can be increased to after required voltage by boosting output circuit
Output.
Specifically, can not control rectifying circuit can use existing conventional form, it is main to realize outside 220V alternating currents
Be converted to DC pulse moving voltage, specifically can not the way of realization of control rectifying circuit can be selected as needed, be specially this
Known to technical field personnel, here is omitted.In full-bridge controlled resonant converter, by full-bridge converter by DC pulse moving voltage
Ac square-wave voltage is converted to, is adapted to using the resonant frequency of resonance link with the switching frequency with full-bridge converter so that be complete
Bridging parallel operation is in Zero Current Switch state (ZCS) pattern, on the other hand so that full-bridge controlled resonant converter has constant-current characteristics,
Also can guarantee that constant current output even if open loop operation, can effectively simplify circuit, accelerate charging rate, to power MOSFET device,
The test of IGBT device is significant, meanwhile, can improve power-efficient, and improve EMI characteristics, reduce to test system remaining
Partial have impact on, and improve measuring accuracy.Brought the voltage up by the output circuit that boosts to required voltage, boost output voltage
Specific output voltage can dynamically test needs be determined according to different capacity semiconductor module, specially the art
Known to personnel, here is omitted.
As shown in Fig. 2 the full-bridge converter includes switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4, it is humorous
Link of shaking includes resonant capacitance Cb and resonant inductance L1；
The drain electrode end of the switching tube Q1 and switching tube Q4 drain electrode end, diode D1 cathode terminal and diode D4
Cathode terminal, switching tube Q1 source terminal and diode D1 anode tap, switching tube Q2 drain electrode end, diode D2 cathode terminal with
And resonant inductance L1 one end connection；
Switching tube Q2 source terminal and the anode of diode D2 anode tap, switching tube Q3 source terminal and diode D3
End connection, switching tube Q3 drain electrode end and diode D3 cathode terminal, switching tube Q4 source terminal, diode D4 cathode terminal with
And resonant capacitance Cb one end connection.
The boosting output circuit includes step-up transformer T1 and step-up transformer T2；
The Same Name of Ends of step-up transformer T1 primary coils, the Same Name of Ends of step-up transformer T2 primary coils are and resonant capacitance
Cb other end connection, non-same polarity, the non-same polarity of step-up transformer T2 primary coils of step-up transformer T1 primary coils
The other end with resonant inductance L1 is connected；Step-up transformer T1 secondary coils connect the first current rectifying and wave filtering circuit, transformation of boosting
Device T2 secondary coils connect the second current rectifying and wave filtering circuit, and the output voltage of the first current rectifying and wave filtering circuit and the second rectifying and wave-filtering electricity
Road output voltage series connection.
First current rectifying and wave filtering circuit includes diode D5, diode D6, diode D7 and diode D8；Second is whole
Flowing filter circuit includes diode D9, diode D10, diode D11 and diode D12；
Diode D5 anode tap, diode D7 cathode terminal connect with the Same Name of Ends of step-up transformer T1 secondary coils
Connect, diode D5 cathode terminal is connected with one end of diode D6 cathode terminal and electric capacity C1, diode D7 anode tap with
Diode D8 anode tap and the electric capacity C1 other end, diode D9 cathode terminal, diode D10 cathode terminal and electric capacity
C1 one end connection, diode D8 cathode terminal and non-same polarity, the diode D6 anode of step-up transformer T1 secondary coils
End connection；
The cathode terminal of diode D9 anode tap and the Same Name of Ends of step-up transformer T2 secondary coils and diode D11 connects
Connect, diode D11 anode tap is connected with the other end of diode D12 anode tap and electric capacity C2, diode D12 negative electrode
End is connected with step-up transformer T2 non-same polarity and diode D10 anode tap.
In the embodiment of the present invention, switching tube Q1~switching tube Q4 and diode D1~diode D4 composition full-bridge inverting electricity
Road, switching tube Q1~switching tube Q4 can include step-up transformer T1, boosting transformation using conventional metal-oxide-semiconductor, resonant inductance L1
In device T2 leakage inductance, Fig. 2 Vin be can not control rectifying circuit output DC pulse moving voltage, switching tube Q1~Q4 pairs of switching tube
The gate terminal answered is connected with outside control circuit, by outside control circuit controling switch pipe Q1~switching tube Q4 conducting
Sequentially, realize and DC pulse moving voltage is converted into ac square-wave voltage, the technology hand that can be specifically commonly used using the art
Known to Duan Shixian conversion and controls, specially those skilled in the art, here is omitted.
Increase voltage output by the way of being connected after step-up transformer T1, step-up transformer T2 correspondence secondary coil rectification
When, it on the one hand can cause power dispersion, the no-load voltage ratio of step-up transformer on the other hand be reduced, so as to reduce the design of transformer
With technique manufacture difficulty, the influence for also bringing the distributed constant of step-up transformer is reduced to minimum.
As shown in figure 3, in being the equivalent circuit diagram of full-bridge controlled resonant converter, the embodiment of the present invention, resonance link is using string
Join resonance, certainly, specific implementation can also simply be selected different resonance manners, can be changed electricity using other resonance manners
The complexity on road, can specifically be selected as needed, and specially known to those skilled in the art, here is omitted.
In equivalent circuit, Uin is the ac square-wave voltage that full-bridge converter is exported, and R is the load for being folded to primary side, by humorous
Shake circuit the characteristics of understand, resonant frequency frForQuality factor q is
In Fig. 4, abscissa is frequency, and ordinate is current value, as shown in Figure 4, as switching frequency fsIn resonant frequency frIt is attached
When near, there is very high current value in loop, as switching frequency fsOff-resonance frequency frAfterwards, with load R changes, curent change
Less, that is, there is good electric current regulating power.When loading R short circuits, under certain frequency, still there is good current characteristics.Cause
This, full-bridge controlled resonant converter shows current source characteristic, and full-bridge controlled resonant converter carries out permanent according to current source to output storage capacitor
Current charge, and with intrinsic overload protection ability.Closed loop steady flow measure is not needed, open loop is that constant current output can be achieved, because
This also simplify circuit.
In order to meet so that full-bridge controlled resonant converter has constant-current characteristics, Zero Current Switch state can be worked in, the present invention
In embodiment, the switching frequency of full-bridge converterI.e. by controlling switch pipe Q1~switching tube Q4 switching frequency with
Relation between resonant frequency.
As shown in figure 5, in the switching frequency of bridging parallel operationUnder, a switch periods of full-bridge converter
During schematic diagram, t0~t1, switching tube Q1, switching tube Q3 are turned on, t1 moment resonance current zero passages, during t1~t2, resonance electricity
Stream is reverse, and diode D1, diode D3 start working, switching tube Q1, switching tube Q3 zero-current switchings；During t2~t3, own
Device is stopped；T3 moment resonance current back to zeros, hereafter during t3~t4, switching tube Q2, switching tube Q4 conducting, switching tube
Q2, switching tube Q4 are zero current turning-on；During t4~t5, diode D2, diode D4 afterflows, switching tube Q2, switching tube Q4 zero
Switch off current.It can be seen that, in whole switch periods, switching tube Q1~switching tube Q4 can realize zero current turning-on, zero-current switching,
For Sofe Switch state, switching loss is low and disturbs small.
The resonant frequency of resonance link of the present invention is adapted to the switching frequency of full-bridge converter, to cause full-bridge converter work
Make in Zero Current Switch state, and cause full-bridge controlled resonant converter to realize constant current output, constant current side can be used to storage capacitor
Formula charges, can with open loop operation, without closed loop current stabilization, while having output overloading protection feature, it is to avoid conventional voltage source is filled
The various weakness of electricity, accelerate charging rate, test significant for power MOSFET, IGBT.Full-bridge controlled resonant converter
Switching tube zero current turning-on and no-voltage, switch off current can be realized, power-efficient is improved while improving EMI characteristics, subtracts
The small influence to test system other parts, improves measuring accuracy.
Claims (4)
1. a kind of high-voltage great-current tests power supply, including for electric main to be converted to the uncontrollable rectification of DC pulse moving voltage
Circuit；It is characterized in that：Also include with can not the full-bridge controlled resonant converter that be connected of control rectifying circuit and with full-bridge resonance change
The boosting output circuit of parallel operation connection；
The full-bridge controlled resonant converter include be used for by can not control rectifying circuit output DC pulse moving voltage be converted to exchange side
The full-bridge converter of wave voltage and the resonance link for producing resonant condition, the resonant frequency and full-bridge of the resonance link
The switching frequency adaptation of converter, to cause full-bridge converter to work in Zero Current Switch state, and causes full-bridge resonant transformation
Device realizes constant current output；The output voltage of full-bridge controlled resonant converter can be increased to defeated after required voltage by boosting output circuit
Go out.
2. high-voltage great-current according to claim 1 tests power supply, it is characterized in that：The full-bridge converter includes switching tube
Q1, switching tube Q2, switching tube Q3 and switching tube Q4, resonance link include resonant capacitance Cb and resonant inductance L1；
The negative electrode of the drain electrode end of the switching tube Q1 and switching tube Q4 drain electrode end, diode D1 cathode terminal and diode D4
End, switching tube Q1 source terminal and diode D1 anode tap, switching tube Q2 drain electrode end, diode D2 cathode terminal and humorous
Shake inductance L1 one end connection；
Switching tube Q2 source terminal and the anode tap of diode D2 anode tap, switching tube Q3 source terminal and diode D3 connect
Connect, switching tube Q3 drain electrode end and diode D3 cathode terminal, switching tube Q4 source terminal, diode D4 cathode terminal and humorous
Shake electric capacity Cb one end connection.
3. high-voltage great-current according to claim 2 tests power supply, it is characterized in that：The boosting output circuit includes boosting
Transformer T1 and step-up transformer T2；
The Same Name of Ends of step-up transformer T1 primary coils, the Same Name of Ends of step-up transformer T2 primary coils are with resonant capacitance Cb's
The other end connect, the non-same polarity of step-up transformer T1 primary coils, the non-same polarity of step-up transformer T2 primary coils with
Resonant inductance L1 other end connection；Step-up transformer T1 secondary coils connect the first current rectifying and wave filtering circuit, step-up transformer T2
Secondary coil connects the second current rectifying and wave filtering circuit, and the output voltage of the first current rectifying and wave filtering circuit and the second current rectifying and wave filtering circuit are defeated
Go out Voltage Series.
4. high-voltage great-current according to claim 3 tests power supply, it is characterized in that：First current rectifying and wave filtering circuit includes
Diode D5, diode D6, diode D7 and diode D8；Second current rectifying and wave filtering circuit includes diode D9, diode
D10, diode D11 and diode D12；
The Same Name of Ends of diode D5 anode tap, diode D7 cathode terminal with step-up transformer T1 secondary coils is connected, and two
Pole pipe D5 cathode terminal is connected with diode D6 cathode terminal and electric capacity C1 one end, diode D7 anode tap and diode
D8 anode tap and the electric capacity C1 other end, diode D9 cathode terminal, the one of diode D10 cathode terminal and electric capacity C1
End connection, diode D8 cathode terminal is connected with the non-same polarity of step-up transformer T1 secondary coils, diode D6 anode tap；
Diode D9 anode tap is connected with the Same Name of Ends of step-up transformer T2 secondary coils and diode D11 cathode terminal,
Diode D11 anode tap is connected with diode D12 anode tap and the electric capacity C2 other end, diode D12 cathode terminal
It is connected with step-up transformer T2 non-same polarity and diode D10 anode tap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710445807.XA CN107017791A (en) | 2017-06-14 | 2017-06-14 | High-voltage great-current tests power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710445807.XA CN107017791A (en) | 2017-06-14 | 2017-06-14 | High-voltage great-current tests power supply |
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| CN107017791A true CN107017791A (en) | 2017-08-04 |
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| CN201710445807.XA Pending CN107017791A (en) | 2017-06-14 | 2017-06-14 | High-voltage great-current tests power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740586A (en) * | 2021-08-27 | 2021-12-03 | 北京全路通信信号研究设计院集团有限公司 | Current testing device and method |
| CN114035008A (en) * | 2021-11-10 | 2022-02-11 | 广东电网有限责任公司广州供电局 | Voltage withstand test circuit and device |
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| CN113740586B (en) * | 2021-08-27 | 2024-01-19 | 北京全路通信信号研究设计院集团有限公司 | Current testing device and method |
| CN114035008A (en) * | 2021-11-10 | 2022-02-11 | 广东电网有限责任公司广州供电局 | Voltage withstand test circuit and device |
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