CN201011522Y - Electronic load for energy conversion - Google Patents
Electronic load for energy conversion Download PDFInfo
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- CN201011522Y CN201011522Y CN 200620015322 CN200620015322U CN201011522Y CN 201011522 Y CN201011522 Y CN 201011522Y CN 200620015322 CN200620015322 CN 200620015322 CN 200620015322 U CN200620015322 U CN 200620015322U CN 201011522 Y CN201011522 Y CN 201011522Y
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- current
- boost inductance
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Abstract
The utility model discloses an energy converting electronic load, which adopts the topology of a voltage booster circuit to finish the energy conversion. The utility model comprises the voltage booster inductance, an alternating voltage converting circuit, an energy storing circuit, a current detecting circuit, a current control circuit and an electricity supply circuit. Wherein, the input terminal of a voltage booster inductance is connected in series with the output terminal of an aged or detected power product. The output terminal of the voltage booster inductance is connected with the input terminal of the alternating voltage converting circuit which controls the electrode changes of the voltage at the two terminals of the voltage booster inductance. The output terminal of the alternating voltage converting circuit is directly connected with the energy storing circuit. Resulting from that the voltage booster inductance is connected in series with the aged output loop of the power supply, the accurate and dynamic control to the loaded electric current can be realized through detecting and controlling the electric current of the voltage booster inductance. Through reasonably designing the inductance level of the voltage booster inductance and matching with a plurality of electric compensating circuits, the current ripple of the loaded electric current can be reduced to the specified level.
Description
[technical field]
The utility model relates to a kind of electronic load, specifically is meant the electronic load of a kind of detection that is applied to power source products in the electronic product and aging energy conversion.
[background technology]
Doing of direct supply detected or aging in present electronic product, described direct supply comprises AC/DC conversion, DC/DC conversion, it is used to detect or aging electronic devices and components mostly are to adopt power resistor or power tube to be used as fictitious load, and most of electric energy consumes on fictitious load in vain in ageing process.Some special-purpose electronic loads appear subsequently, though this special electronic load can be reclaimed part energy,, the special electronic load voltage range narrow, and lack load current accurately controlled.
[utility model content]
Want the technical solution problem in order to solve, the purpose of this utility model a kind of not only can providing is provided is applicable to than wide-voltage range, but also the accurate electronic load of the energy conversion of the control load magnitude of current.
In order to solve the problems of the technologies described above, the electronic load of a kind of energy conversion that the utility model provides adopts the topology of booster circuit, finishes energy conversion; It comprises boost inductance, alternating voltage change-over circuit, tank circuit, current detection circuit, current control circuit and feed circuit; Wherein the input end of boost inductance is connected in series to by aging or detected power source products output terminal, the output terminal of boost inductance is connected with the alternating voltage change-over circuit input end of the change in polarity of the voltage that is used to control the boost inductance two ends, the output terminal of alternating voltage change-over circuit is directly connected to tank circuit.
According to above-mentioned major technique feature, adopt the voltage signal that adds to control by the output current of aging or detected power source products; Current detection circuit detects the electric current that flows through boost inductance, is sent to current control circuit, and the current value of presetting together compares, and difference value is used for adjusting the changing voltage dutycycle of alternating voltage change-over circuit.
According to above-mentioned major technique feature, tank circuit comes store electrical energy by capacitor or accumulator, is used for energy recovery or utilization again, and has the overvoltage protection ability; Also can make potential isolation by transformer; The output of a plurality of identical electronic loads can be directly in parallel.
Technique effect of the present utility model:,, just can realize the accurate control of load current and dynamically control by detecting and control the electric current on the boost inductance because boost inductance is the power supply output loop that is connected on by aging.By the sensibility reciprocal of boost inductance rationally is set, cooperate some current compensation circuits again, the ripple that can reduce load current is to required degree.Because owing to adopt the topology of booster circuit, input voltage to the high-end scope that can change tens times, therefore adopts the electronic load of present technique to go for different power supply products from low side, can fully be used.
[description of drawings]
Fig. 1 is the circuit module figure of the electronic load of energy conversion among first kind of embodiment;
Fig. 2 is the circuit structure diagram of the electronic load of energy conversion among first kind of embodiment;
Fig. 3 is the circuit structure diagram of the electronic load of energy conversion among second kind of embodiment;
Fig. 4 is the circuit structure diagram of the electronic load of energy conversion among the third embodiment.
[embodiment]
Please refer to Figure 1 and Figure 2, below in conjunction with the electronic load that a kind of energy conversion is provided among description of drawings the utility model first embodiment, it includes boost inductance, alternating voltage change-over circuit, tank circuit, current detection circuit, current control circuit and feed circuit.Wherein the input end of boost inductance is connected in series to by aging power supply product output terminal, and the output terminal of boost inductance is connected with alternating voltage change-over circuit input end, makes that the voltage at boost inductance two ends is alternating voltages of change in polarity.The output terminal of alternating voltage change-over circuit is directly connected to tank circuit.The electric energy that stores can directly connect load, and as electric heating, illumination is perhaps returned electrical network by inverter.
Current detection circuit detects the electric current that flows through boost inductance, is sent to current control circuit, and the current value of presetting together compares, and difference value is used for adjusting the inversion frequency or the dutycycle of alternating voltage change-over circuit, thereby reaches needed load current.
Being connected to boost inductance by aging power output end, can be anodal linking to each other, and also can be that negative pole links to each other; The outflow direction of electric current just can be designed as, and also can be designed as negative.Make further proof with the example that is connected to anodal electric current outflow below.
The pattern of boost inductance can be magnetic parts such as bar magnet, magnet ring or transformer.Transformer also can have a plurality of windings.The boost inductance feature of this patent indication is: the input end of boost inductance is connected in by the output terminal of aging power supply, wave filter, fuse, current-sensing circuit can be installed therebetween, but can not produce tangible potential difference (PD).The output terminal of boost inductance connects alternating voltage, make the voltage at boost inductance two ends with 10KHZ with upper frequency generation alternation.When the polarity timing, the electric current that flows through boost inductance increases, the boost inductance charging; When polarity when negative, the electric current that flows through boost inductance reduces, the boost inductance discharge, this moment, electric current injected tank circuit through the alternating voltage change-over circuit, realized energy conversion.By the sensibility reciprocal of appropriate design boost inductance, or increase compensating circuit, can make the electric current amplitude of variation on the boost inductance enough little.
The alternating voltage change-over circuit, power controlling switching tube normally, switch the tie point of boost inductance output terminal, the boost inductance output voltage is changed between high electronegative potential, the waveform of its current potential can be a square wave, also can be sinusoidal wave or other waveforms, but must guarantee that its polarity of voltage that boost inductance bore is alternation, when switching to noble potential, can charge to tank circuit, or, electric energy is sensed secondary winding to realize potential isolation simultaneously to the tank circuit charging by isolating transformer.
The energy storage part can be capacitor or accumulator in the tank circuit, also can be to be directly connected to resistive load, as heating wire etc.The electric energy that stores should in time be used, and damages the energy storage part in order to avoid voltage raises.
Usually can detect the voltage of energy storage part, when overtension, force the alternating voltage converter, quit work, realize protection.The electric energy that stores can be used for driving illumination, heating equipment, or be connected to the grid by inversion.
Current detection circuit detects by the electric current of aging power supply output, adopts the precision resistance sampling usually, current transformer, and detection schemes such as Hall current inductor, the result of detection sends current control circuit to the mode of magnitude of voltage.
Current control circuit is compared the voltage that external control voltage and current detection circuit send, and its error amount is used for controlling the dutycycle of high-low level in the alternating voltage change-over circuit, the electric current of boost inductance thereby control is flowed through.External control voltage can be provided after digital-to-analogue is changed by man-machine interface or computing machine output, can realize dynamic control by programming.
The externally fed circuit is conventional direct supply, and the usefulness that provides one or more groups voltage to supply with above circuit operate as normal in case of necessity, can realize potential isolation via transformer.
Please refer to shown in Figure 3ly, difference among second kind of embodiment and the first kind of embodiment: wherein L1 is a boost inductance, and is C1 and C2 by being connected with T1 between the aging power supply, forms common mode interference and suppresses circuit.
Resistance R 1, R2, R3, R4, integrated transporting discharging U1 and capacitor C 4 are formed current-sensing circuit.R1 is the sampling site resistance, and resistance is enough low, and the energy that consumes on it is very little, and is by U1 that the voltage change at R1 two ends is big, the size of coming the reflected load electric current.
Resistance R 7, R10, R11, R12, R13, capacitor C 6, C7, C8, field effect transistor Q1, triode Q2, diode D1 and integrated package U3 form the alternating voltage change-over circuit, and Q1 is in 6. conducting during pin output high level of U3, and this moment, the output terminal of L1 was linked low-voltage (near V-value), and D1 instead ends partially, and L1 charges.When 6. output low level, Q1 ends, and L1 is continuous for keeping electric current.Output HIGH voltage, D1 conducting L1 discharge, electric current charges to C11.Sensibility reciprocal by reasonable placement L1 and U3 be the frequency and the dutyization of pin output pulse 6., can make the electric current of L1 continuous, and its ripple is very little, does not influence aging effect.
Resistance R 14, R15, R16; R17, capacitor C 9, C11; C12, diode D2, D4; D5 and integrated transporting discharging U4 form tank circuit, and U4 makes comparisons the reference voltage of VOUT sampling voltage and stabilivolt D6, and the electric energy in being stored in C11 can not in time consume; treat that VOUT is elevated to police circles' value, then U4 output high level forces 6. output low level of U3 to the 3. pin of integrated package U3; quit work behind the L1 discharge off, thereby protect not damaging of entire circuit.
Please refer to shown in Figure 3ly, the difference of the 3rd embodiment and first kind of embodiment: the driving current potential of field effect transistor Q1 and Q4 is reverse, makes Q1 and Q4 take turns conducting, when the Q4 conducting, by transformer T2, to secondary, gives capacitor C 11 chargings induction by current.And overvoltage crowbar is then realized voltage isolation by photoelectrical coupler U5.Certainly, also can adopt the scheme of other potential isolation, be not limited to the form of being described with this circuit.
Please refer to shown in Figure 4ly, the third embodiment and first kind of embodiment difference: boost inductance L1 is divided into two inductance L in parallel 1 and L2, and its sensibility reciprocal is all identical with direction of winding.The output terminal of L1 is connected to Q1, and the output terminal of L2 is connected to D1, and two windings take turns conducting, there is not induction current, still the feature that meets the boost inductance that present technique describes, and two windings of in fact unnecessary usefulness, and only just can replace with an inductance.
Claims (3)
1. the electronic load of an energy conversion is characterized in that: adopt the topology of booster circuit, finish energy conversion; It comprises boost inductance, alternating voltage change-over circuit, tank circuit, current detection circuit, current control circuit and feed circuit; Wherein the input end of boost inductance is connected in series to by aging or detected power source products output terminal, the output terminal of boost inductance is connected with the alternating voltage change-over circuit input end of the change in polarity of the voltage that is used to control the boost inductance two ends, the output terminal of alternating voltage change-over circuit is directly connected to tank circuit.
2. the electronic load of energy conversion as claimed in claim 1, it is characterized in that: the aging power output end of quilt that is used for the impressed voltage signal controlling is connected in the input end of boost inductance, the input end of current detection circuit is connected on the output terminal of boost inductance, the input end of current control circuit is connected on the output terminal of current detection circuit, and another output terminal of boost inductance is connected in the alternating voltage change-over circuit.
3. the electronic load of energy conversion as claimed in claim 1 is characterized in that: being used for that capacitor or accumulate pond storing spot can draw can the two-way alternating voltage change-over circuit that is connected in of circuit, and extraneous load is directly connected on the alternating voltage change-over circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620015322 CN201011522Y (en) | 2006-10-20 | 2006-10-20 | Electronic load for energy conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620015322 CN201011522Y (en) | 2006-10-20 | 2006-10-20 | Electronic load for energy conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201011522Y true CN201011522Y (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620015322 Expired - Fee Related CN201011522Y (en) | 2006-10-20 | 2006-10-20 | Electronic load for energy conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201011522Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141578A (en) * | 2010-12-30 | 2011-08-03 | 杭州电子科技大学 | Program-controlled electronic load device with compensating power supply |
| CN102749592A (en) * | 2012-07-04 | 2012-10-24 | 尚艳燕 | Electron loading machine |
| CN104297577A (en) * | 2013-07-15 | 2015-01-21 | 同济大学 | Super capacitor-based aging state estimation detection system and method |
| CN106093803A (en) * | 2016-06-07 | 2016-11-09 | 东莞市冠佳电子设备有限公司 | Switch power supply aging test circuit |
| CN106546930A (en) * | 2016-08-23 | 2017-03-29 | 四川莱福德科技有限公司 | For the high-adaptability load simulation method and system of DC source |
| CN113311351A (en) * | 2021-07-29 | 2021-08-27 | 成都歆慎科技有限公司 | Charging power supply test load and system |
-
2006
- 2006-10-20 CN CN 200620015322 patent/CN201011522Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141578A (en) * | 2010-12-30 | 2011-08-03 | 杭州电子科技大学 | Program-controlled electronic load device with compensating power supply |
| CN102749592A (en) * | 2012-07-04 | 2012-10-24 | 尚艳燕 | Electron loading machine |
| CN102749592B (en) * | 2012-07-04 | 2015-07-15 | 尚艳燕 | Electron loading machine |
| CN104297577A (en) * | 2013-07-15 | 2015-01-21 | 同济大学 | Super capacitor-based aging state estimation detection system and method |
| CN104297577B (en) * | 2013-07-15 | 2017-07-25 | 同济大学 | Ageing state estimation detecting system and method based on ultracapacitor |
| CN106093803A (en) * | 2016-06-07 | 2016-11-09 | 东莞市冠佳电子设备有限公司 | Switch power supply aging test circuit |
| CN106093803B (en) * | 2016-06-07 | 2019-06-11 | 东莞市冠佳电子设备有限公司 | Switch power supply aging tests circuit |
| CN106546930A (en) * | 2016-08-23 | 2017-03-29 | 四川莱福德科技有限公司 | For the high-adaptability load simulation method and system of DC source |
| CN113311351A (en) * | 2021-07-29 | 2021-08-27 | 成都歆慎科技有限公司 | Charging power supply test load and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20101020 |