CN204405816U - A kind of system DC Electronic Loads being applied to interchange equipment under test - Google Patents
A kind of system DC Electronic Loads being applied to interchange equipment under test Download PDFInfo
- Publication number
- CN204405816U CN204405816U CN201520064536.XU CN201520064536U CN204405816U CN 204405816 U CN204405816 U CN 204405816U CN 201520064536 U CN201520064536 U CN 201520064536U CN 204405816 U CN204405816 U CN 204405816U
- Authority
- CN
- China
- Prior art keywords
- voltage
- under test
- equipment under
- bridge rectifier
- full bridge
- 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.)
- Expired - Fee Related
Links
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a kind of system DC Electronic Loads being applied to interchange equipment under test, comprise interchange equipment under test, rectification circuit and DC Electronic Loads, exchange equipment under test to be connected with rectification circuit, the output terminal of rectification circuit is connected with DC Electronic Loads, rectification circuit comprises full bridge rectifier and commutation capacitor, the input end of full bridge rectifier is connected with interchange equipment under test, the output terminal of full bridge rectifier is connected with DC Electronic Loads, commutation capacitor is high-voltage electrolytic capacitor, the anode of commutation capacitor connects with the anode of full bridge rectifier, the negative terminal of commutation capacitor connects with the negative terminal of full bridge rectifier.The utility model can complete ac/dc conversion, thus realizes the application of DC Electronic Loads in interchange equipment under test, expands the range of application of DC Electronic Loads, reduces cost, realize a tractor serves several purposes.
Description
Technical field
The utility model relates to the load testing of electronic electric equipment, more specifically relates to a kind of system DC Electronic Loads being applied to interchange equipment under test.
Background technology
The load testing of electronic electric equipment is all necessary test item for manufacturing enterprise and testing laboratory, as power module test of dispatching from the factory, battery discharge experiment, switch durability test, automobile dynamic quality experiment etc.Load traditional at present generally adopts static load, such as resistance box etc., they have huge volume and weight, resistor load box as logical in a Daepori, volume is about 1.5m3 ~ 2m3, and weight can reach 160kg ~ 300kg, and the load-bearing load of common floor is generally 1.5kN ~ 2.5kN/m2, be about as much as the load that every square metre only can be born 155 kg ~ 258 kg, have impact on layout and the use of equipment; In addition, these conventional load need to take a large amount of spaces and are not easy to mobile; Secondly, equipment is groundwork element owing to adopting traditional resistance, easily aging and scaling loss, is not easy to safeguard; Again, in test process, most of energy changes into heat energy and is consumed, power consumption greatly, not energy-conserving and environment-protective; And these loads can not dynamic adjustments, cannot meet the requirement of load dynamic change in test process, so just not conform to the true applied environment of product to be measured.
The appearance of electronic load effectively can solve the various problems of traditional resistor load existence, and degree of regulation is high, good stability, also by flexile regulation and control method, not only can simulate actual loading condition, the load squiggle that some are special can also be simulated, the dynamic and transient response of testing power supply equipment.Electronic load divides from powered types generally can be divided into DC Electronic Loads and alternating current electronic load.Under normal conditions, DC Electronic Loads definitely can not be applied to the equipment of Alternating Current Power Supply owing to bearing negative voltage.
Utility model content
The utility model provides a kind of and DC Electronic Loads is applied to the system exchanging equipment under test, it can complete ac/dc conversion, thus realizes the application of DC Electronic Loads in interchange equipment under test, expands the range of application of DC Electronic Loads, reduce cost, realize a tractor serves several purposes.
For solving the problems of the technologies described above, the utility model proposes a kind of system DC Electronic Loads being applied to interchange equipment under test, comprise interchange equipment under test, rectification circuit and DC Electronic Loads, described interchange equipment under test is connected with described rectification circuit, the output terminal of described rectification circuit is connected with described DC Electronic Loads, described rectification circuit comprises full bridge rectifier and commutation capacitor, the input end of described full bridge rectifier is connected with interchange equipment under test, the output terminal of described full bridge rectifier is connected with described DC Electronic Loads, described commutation capacitor is high-voltage electrolytic capacitor, the anode of described commutation capacitor connects with the anode of described full bridge rectifier, the negative terminal of described commutation capacitor connects with the negative terminal of described full bridge rectifier, described full bridge rectifier is PSD 63/16 rectifier bridge chip, the reverse surge voltage of this chip is with oppositely not repeating voltage is 1600V, the effective voltage of input ac voltage is 400V.
According to system of the present utility model, described commutation capacitor is 2200 μ F electric capacity, and it is withstand voltage is 400V.
According to system of the present utility model, described system also comprises connecting and disconnecting of the circuit controller, and the input end of described connecting and disconnecting of the circuit controller is connected with described interchange equipment under test, and the output terminal of described connecting and disconnecting of the circuit controller is connected with described full bridge rectifier.
According to system of the present utility model, described connecting and disconnecting of the circuit controller is relay or contactor.
According to system of the present utility model, described system also comprises power meter, and described power meter is connected on the live wire between interchange equipment under test and described connecting and disconnecting of the circuit controller.
According to system of the present utility model, described DC Electronic Loads comprises power semiconductor device and sampling resistor, the drain electrode of described power semiconductor device is connected with the power output end needing loading to test, the grid of described power semiconductor device is connected with outside control signal, forms major loop after sampling resistor described in the source series of described power semiconductor device with the power supply needing loading to test.
According to system of the present utility model, the link of the source electrode of described sampling resistor and described power semiconductor device is as an input end of a voltage comparator, another input end of described voltage comparator inputs a benchmark comparative voltage, the output terminal of described voltage comparator is connected to the grid of an automatic adjusting part, the drain electrode of described automatic adjusting part connects a control signal source, is connected to form control loop after source series one divider resistance of described automatic adjusting part with the grid of power semiconductor device.
According to system of the present utility model, the link of the source electrode of described sampling resistor and described power semiconductor device is as an input end of a voltage comparator, another input end of described voltage comparator inputs a benchmark comparative voltage, the output terminal of described voltage comparator is connected to the grid of an automatic adjusting part, the drain electrode of described automatic adjusting part connects a control signal source, is connected to form control loop after source series one divider resistance of described automatic adjusting part with the grid of power semiconductor device.
The utility model adopts full bridge rectifier to change alternating current-direct current, consider the reproducibility of test macro to test data and the correctability of testing tool, add power meter in the front end of rectifier bridge, in system, also add connecting and disconnecting of the circuit controller, to ensure the safety of test process.Thus the utility model completes ac/dc conversion, thus realize the application of DC Electronic Loads in interchange equipment under test, expand the range of application of DC Electronic Loads, reduce cost, realize a tractor serves several purposes.In the utility model, full bridge rectifier adopts the PSD 63/16 rectifier bridge chip of the Powersem company of Germany, this chip reverse surge voltage (VRRM) and oppositely do not repeat voltage (VRSM) and be 1600V, the effective voltage (Vrms) of input ac voltage is 400V, almost completely covers the voltage range of various countries, and do not need external transformer to reduce input voltage.And the utility model to have system bulk little, lightweight, easy to operate advantage.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by describing in detail embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is a kind of circuit theory diagrams DC Electronic Loads being applied to the system exchanging equipment under test of the utility model;
Fig. 2 is the circuit diagram of a kind of embodiment of electronic direct current load in the utility model.
Embodiment
For further setting forth the technological means and effect thereof that the utility model takes, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
As shown in Figure 1, the utility model proposes a kind of system DC Electronic Loads being applied to interchange equipment under test, comprise and exchange equipment under test 10, rectification circuit 20 and DC Electronic Loads 30, exchange equipment under test 10 to be connected with rectification circuit 20, the output terminal of rectification circuit 20 is connected with DC Electronic Loads 30, rectification circuit 20 comprises full bridge rectifier 21 and commutation capacitor 22, the input end of full bridge rectifier 21 is connected with interchange equipment under test 10, the output terminal of full bridge rectifier 21 is connected with DC Electronic Loads 30, commutation capacitor 22 is high-voltage electrolytic capacitor, the anode of described commutation capacitor 22 connects with the anode of described full bridge rectifier 21, the negative terminal of described commutation capacitor 22 connects with the negative terminal of full bridge rectifier 21, full bridge rectifier 21 is preferably PSD 63/16 rectifier bridge chip, the reverse surge voltage (VRRM) of this chip and oppositely not repeating voltage (VRSM) is 1600V, the effective voltage (Vrms) of input ac voltage is 400V.Preferably, commutation capacitor 22 is 2200 μ F electric capacity, and it is withstand voltage is 400V.
System of the present utility model also comprises connecting and disconnecting of the circuit controller 40 and power meter 50, and the input end of connecting and disconnecting of the circuit controller 40 is connected with interchange equipment under test 10, and the output terminal of connecting and disconnecting of the circuit controller 40 is connected with full bridge rectifier.Connecting and disconnecting of the circuit controller 40 is relay or contactor.Power meter 50 is connected on the live wire between interchange equipment under test 10 and connecting and disconnecting of the circuit controller 40.In the utility model, power meter 20 and connecting and disconnecting of the circuit controller 30 are only used in peripheral circuit.Power meter 20, for monitoring the running parameter of electronic load, as voltage, electric current, power etc., uses Yokogawa WT210, but any a power meter in fact can be used to realize this effect in native system.And connecting and disconnecting of the circuit controller 30 is for switching on and off operating circuit easily.
Bridge rectifier circuit uses maximum a kind of rectification circuits.This circuit, as long as increase by two diode mouths to connect into " bridge " formula structure, just has the advantage of full-wave rectifying circuit, and overcomes its shortcoming to a certain extent simultaneously.General big current full-bridge rectification bridge, it is lower that it is withstand voltage, after needing first to be reduced by input ac voltage by a transformer, then to be connected with full-bridge rectifier.There is the shortcomings such as volume is large, noise large, transformer heating in such scheme.Consider after cost and accuracy of detection require two aspect factors, the design abandons the scheme installing transformer additional, and have selected high-voltage rectifier bridge, adopt the PSD 63/16 rectifier bridge chip of the Powersem company of Germany, this chip reverse surge voltage (VRRM) and oppositely do not repeat voltage (VRSM) and be 1600V, the effective voltage (Vrms) of input ac voltage is 400V, almost completely covers the voltage range of various countries, and does not need external transformer to reduce input voltage.
The capacitor charge and discharge circuit of the utility model rectification circuit have employed a high pressure bulky capacitor.The capacity of electric capacity is larger, direct current ripple after its rectification is less, more close to direct current, less on the impact of DC load like this, therefore the utility model have selected the bulky capacitor of 2200 μ F, simultaneously in order to adapt to the change of the input voltage of country variant and examination criteria to the requirement of test voltage, also have selected high pressure bulky capacitor, the withstand voltage of electric capacity is 400V.This electric capacity is electrochemical capacitor, has directivity, and the anode of electric capacity will connect with the anode of full-bridge rectification, and negative terminal connects with the negative terminal of full-bridge rectifier.
Native system principal feature has: input ac voltage scope is wide, is applicable to the test of countries in the world tested device, can accurately changes the alternating current that measured object passes through, and reaches the object of alternating current test; System bulk is little, lightweight, easy to operate.Native system have employed high-precision DC Electronic Loads, and realizes rectification by high pressure 2200 μ F electric capacity and high pressure full-bridge rectification chip PSD 63/16; Consider from system measurability, add correction and data reproduction that power meter realizes system.Experimental result shows that this design meets the requirements completely, is applicable to the application scenarios such as the test of various interchange equipment under test.
Fig. 2 is the circuit diagram of a kind of embodiment of DC Electronic Loads in the utility model, this DC Electronic Loads comprises load and is made up of a power semiconductor device Q1 and sampling resistor R1, the drain D of this power semiconductor device Q1 is connected with the cathode power supply output terminal needing loading to test, the grid G of this power semiconductor device Q1 is connected with outside control signal, and the source S of this power semiconductor device Q1 is connected after a sampling resistor R1 and formed major loop with the power supply needing loading to test.The link of the source S of sampling resistor R1 and power semiconductor device Q1 is as an input end of a voltage comparator U1, another input end of voltage comparator U1 inputs a benchmark comparative voltage VBB, UCC is the working power of voltage comparator U1, the output terminal of described voltage comparator U1 is connected to the grid G of an automatic adjusting part Q2, the drain D of automatic adjusting part Q2 connects a control signal source VCC, the source S of described automatic adjusting part Q2 is connected after a divider resistance R3 and is connected to form control loop with the grid G of power semiconductor device Q1.
The grid G of described power semiconductor device Q1 be connected a divider resistance R2 between ground and form a point voltage protection circuit; when the control signal that automatic adjusting part Q1 produces is excessive time; meeting resistance to sparking R2; control loop is opened a way; the control signal of sever supply Q1, protection major loop is not damaged.Power semiconductor device Q1 is power field effect pipe or insulated gate bipolar transistor.Automatic adjusting part Q2 is power field effect pipe or insulated gate bipolar transistor.Source S and the divider resistance R4 that connects between sampling resistor R1 of power semiconductor device Q1.Voltage comparator U1 can select the LM339 chip of Texas Instrument.
The above; for the person of ordinary skill of the art; can make other various corresponding change and distortion according to the technical solution of the utility model and technical conceive, and all these change and be out of shape the protection domain that all should belong to the utility model claim.
Claims (7)
1. DC Electronic Loads is applied to the system exchanging equipment under test by one kind, it is characterized in that, comprise interchange equipment under test, rectification circuit and DC Electronic Loads, described interchange equipment under test is connected with described rectification circuit, the output terminal of described rectification circuit is connected with described DC Electronic Loads, described rectification circuit comprises full bridge rectifier and commutation capacitor, the input end of described full bridge rectifier is connected with interchange equipment under test, the output terminal of described full bridge rectifier is connected with described DC Electronic Loads, described commutation capacitor is high-voltage electrolytic capacitor, the anode of described commutation capacitor connects with the anode of described full bridge rectifier, the negative terminal of described commutation capacitor connects with the negative terminal of described full bridge rectifier, described full bridge rectifier is PSD 63/16 rectifier bridge chip, the reverse surge voltage of this chip is with oppositely not repeating voltage is 1600V, the effective voltage of input ac voltage is 400V.
2. system according to claim 1, is characterized in that, described commutation capacitor is 2200 μ F electric capacity, and it is withstand voltage is 400V.
3. system according to claim 1, it is characterized in that, described system also comprises connecting and disconnecting of the circuit controller, and the input end of described connecting and disconnecting of the circuit controller is connected with described interchange equipment under test, and the output terminal of described connecting and disconnecting of the circuit controller is connected with described full bridge rectifier.
4. system according to claim 3, is characterized in that, described connecting and disconnecting of the circuit controller is relay or contactor.
5. system according to claim 3, is characterized in that, described system also comprises power meter, and described power meter is connected on the live wire between described interchange equipment under test and described connecting and disconnecting of the circuit controller.
6. system according to claim 1, it is characterized in that, described DC Electronic Loads comprises power semiconductor device and sampling resistor, the drain electrode of described power semiconductor device is connected with the power output end needing loading to test, the grid of described power semiconductor device is connected with outside control signal, forms major loop after sampling resistor described in the source series of described power semiconductor device with the power supply needing loading to test.
7. system according to claim 6, it is characterized in that, the link of the source electrode of described sampling resistor and described power semiconductor device is as an input end of a voltage comparator, another input end of described voltage comparator inputs a benchmark comparative voltage, the output terminal of described voltage comparator is connected to the grid of an automatic adjusting part, the drain electrode of described automatic adjusting part connects a control signal source, is connected to form control loop after source series one divider resistance of described automatic adjusting part with the grid of power semiconductor device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064536.XU CN204405816U (en) | 2015-01-29 | 2015-01-29 | A kind of system DC Electronic Loads being applied to interchange equipment under test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064536.XU CN204405816U (en) | 2015-01-29 | 2015-01-29 | A kind of system DC Electronic Loads being applied to interchange equipment under test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204405816U true CN204405816U (en) | 2015-06-17 |
Family
ID=53429665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520064536.XU Expired - Fee Related CN204405816U (en) | 2015-01-29 | 2015-01-29 | A kind of system DC Electronic Loads being applied to interchange equipment under test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204405816U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528298A (en) * | 2017-09-11 | 2017-12-29 | 深圳传音制造有限公司 | The protection circuit and electronic load of electronic load |
| CN108907381A (en) * | 2018-06-30 | 2018-11-30 | 南京理工大学 | A kind of electronic load and the course of work of WEDM pulse power supply |
| CN109239622A (en) * | 2018-10-23 | 2019-01-18 | 北京大华无线电仪器有限责任公司 | DC load is set to have the device and control method of exchange load function |
-
2015
- 2015-01-29 CN CN201520064536.XU patent/CN204405816U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528298A (en) * | 2017-09-11 | 2017-12-29 | 深圳传音制造有限公司 | The protection circuit and electronic load of electronic load |
| CN107528298B (en) * | 2017-09-11 | 2020-08-14 | 深圳传音制造有限公司 | Protection circuit of electronic load and electronic load |
| CN108907381A (en) * | 2018-06-30 | 2018-11-30 | 南京理工大学 | A kind of electronic load and the course of work of WEDM pulse power supply |
| CN108907381B (en) * | 2018-06-30 | 2020-04-28 | 南京理工大学 | Electronic load of wire cut electrical discharge machining pulse power supply and working process |
| CN109239622A (en) * | 2018-10-23 | 2019-01-18 | 北京大华无线电仪器有限责任公司 | DC load is set to have the device and control method of exchange load function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204758699U (en) | A insulating impedance detection circuitry for photovoltaic inverter | |
| CN101325366A (en) | Circuit with protective circuit for correcting active power factor | |
| CN203423631U (en) | Solar energy no-bridge inverter comprising high boosted circuit | |
| CN106385102A (en) | Power supply voltage sag protector of super capacitor energy storage and control method thereof | |
| CN101865960A (en) | Method and device for monitoring equipment efficiency performance | |
| CN204405816U (en) | A kind of system DC Electronic Loads being applied to interchange equipment under test | |
| CN104184111B (en) | Overvoltage protection circuit for high-voltage transmission line ground wire power getting | |
| CN204179684U (en) | Wind turbine generator fault traversing device | |
| CN104006479A (en) | Photovoltaic air conditioning system and control method thereof | |
| CN108539872A (en) | Power taking system based on load current of power transmission line | |
| CN211348579U (en) | Direct current power supply test system | |
| CN104898025A (en) | Cable line fault monitoring circuit based on double coils | |
| CN102882393B (en) | Power supply device for converter valve of static VAR generator | |
| CN204597597U (en) | A kind of domestic solar electric power system | |
| CN207664638U (en) | A kind of grid-connected VSG devices of distributed generation resource | |
| CN202696482U (en) | Power supply circuit for leakage circuit breaker | |
| CN204089154U (en) | The overvoltage crowbar of a kind of ultra-high-tension power transmission line ground wire power taking | |
| CN107086769A (en) | One kind matches somebody with somebody the low apparent power digital circuit of network source | |
| CN207396699U (en) | A kind of AC220V voltage detecting circuits for fire-fighting equipment power supply | |
| CN209283112U (en) | A kind of power circuit for automatic transfer switching electric appliance controller | |
| CN207382206U (en) | A kind of fire-fighting equipment power supply including AC220V voltage detecting circuits | |
| CN203457043U (en) | Interactive PFC boost topology circuit | |
| CN203481901U (en) | Zero-load low-loss battery charging circuit | |
| CN203261244U (en) | High-frequency switching power supply module | |
| CN206756919U (en) | Voltage detecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |