CN2805210Y - Main circuit for high energy feed back type electronic loading device - Google Patents
Main circuit for high energy feed back type electronic loading device Download PDFInfo
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- CN2805210Y CN2805210Y CN 200520050487 CN200520050487U CN2805210Y CN 2805210 Y CN2805210 Y CN 2805210Y CN 200520050487 CN200520050487 CN 200520050487 CN 200520050487 U CN200520050487 U CN 200520050487U CN 2805210 Y CN2805210 Y CN 2805210Y
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- 238000011084 recovery Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005764 inhibitory process Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a main circuit for a high energy feed back type electronic load device, which comprises a three-phase full-bridge diode rectifier, a soft-switch direct-current boost switch converter, three-phase voltage type inverter and three AC current-limiting reactors, wherein the AC input of the three-phase full-bridge diode rectifier is connected with a tested AC power supply, the DC output of the three-phase full-bridge diode rectifier is connected with the DC input terminal of the soft-switch direct-current boost switch converter, the DC output terminal of the soft-switch direct-current boost switch converter is connected with the input terminal of the three-phase voltage type inverter, and three AC output terminals of the three-phase voltage type inverter are connected with a power network through the three AC current-limiting reactors. The utility model is suitable for the DC or the AC power supply to carry out load test and has the advantages of large adaptable range of the power supply voltage and less content of the current harmonics input into the power network.
Description
Technical field
The present invention relates to a kind of main circuit of high-energy feedback type electronic load device, belong to the electric automatization equipment technical field.
Background technology
Various power-supply devices such as various DC power supply, AC power, frequency converter, inverter etc. generally adopt ohmic load when carrying out load test, the whole losses of energy cause a large amount of energy wastes during test in resistance.
In the energy feedback type electronic load, generally adopt the thyristor inversion mode, this mode is big to the harmonic pollution of electrical network.
The utility model content
The purpose of this utility model is to provide a kind of main circuit of high-energy feedback type electronic load device, to overcome the big deficiency that waits of the existing energy feedback electronic load harmonic pollution that adopts controllable silicon to make inverter.
For achieving the above object, the technical scheme that the utility model is taked is: comprise three phase full bridge diode rectifier, soft switch DC boosted switch converter, three-phase voltage-type inverter, three interchange current limiting reactors, the interchange input of described three phase full bridge diode rectifier is received by the test AC power, and the direct-flow input end of soft switch DC boosted switch converter is received in direct current output; The dc output end of soft switch DC boosted switch converter is received the direct-flow input end of three-phase voltage-type inverter; Three ac output ends of three-phase voltage-type inverter are received electrical network through three interchange current limiting reactors.
Above-mentioned soft switch DC boosted switch converter comprises the energy-storage reactor that boosts, two IGBT switching devices, reverse recovery current suppresses and overvoltage absorbs circuit, fly-wheel diode boosts, the output DC container, the positive output end of the described energy-storage reactor one termination three phase full bridge diode rectifier that boosts, another termination reverse recovery current inhibition and overvoltage absorb the input of circuit, the boost anode of fly-wheel diode of the output termination that reverse recovery current suppresses and overvoltage absorbs circuit, another output termination the boost negative electrode of fly-wheel diode and positive pole of output DC container, the collector electrode of two IGBT switching devices is also received the reverse recovery current inhibition and the input of overvoltage absorption circuit, the emitter of two IGBT switching devices connects the negative pole of direct current capacitor, the negative output terminal of three phase full bridge diode rectifier and reverse recovery current inhibition and overvoltage absorb the common port of circuit, and the control end of two IGBT switching devices connects pwm pulses respectively.
Two above-mentioned IGBT switching devices adopt pulse width modulation, and driving pulse phase phasic difference 180 degree, make that total boosted switch operating frequency is the twice of every IGBT operating frequency.
The utility model is owing to adopt such scheme, three phase full bridge diode rectifier, three-phase voltage-type inverter, three interchange current limiting reactors, the three phase full bridge diode rectifier will be rectified into direct voltage by the three-phase alternating voltage of test AC power output, boost through soft boost switching circuit booster converter, then by three-phase voltage type inverter circuit and interchange current limiting reactor, with electric energy inversion telegram in reply net.Owing to adopted boosting inverter, therefore the AC power of input and DC power supply allow bigger excursion.The utility model can adapt to direct current or AC power is carried out load test, and adaptable supply voltage scope is big, and it is little etc. to be input to the current harmonic content of electrical network.
Below in conjunction with accompanying drawing structure of the present utility model and operation principle are further described.
Description of drawings
Fig. 1 is principle of compositionality figure of the present utility model.
Embodiment
Referring to seeing Fig. 1, among the figure, the rectifier bridge of being made up of diode DR1-DR6 will be rectified into direct voltage by the three-phase alternating voltage of test AC power output, the soft boost switching circuit of forming through reactor L1, IGBT device SA～SB, reactor LS, capacitor CS1～CS2, diode D1～D4, capacitor C boosts, the three-phase voltage type inverter circuit of forming via diode DA1-DC2, IGBT device SA1-SC2 and exchange current limiting reactor LA, LB, LC then is with electric energy inversion telegram in reply net.Reverse recovery current during soft boost switching circuit boosts suppresses and overvoltage absorbs circuit by reactor LS, capacitor CS1, CS2, diode D1-D3 forms, the end of reactor LS and the anode of diode D1 also connect input as circuit, the end of the other end of reactor LS and capacitor C S1 also connects a output as circuit, the boost anode of sustained diode 4 of this output termination, diode D1-D3 is connected in series successively by the polarity order, the other end of capacitor C S1 is connected between the anode of the negative electrode of diode D2 and diode D3, one of capacitor C S2 terminates between the anode of the negative electrode of diode D1 and diode D2, the end of capacitor C S2 and the negative electrode of diode D3 also connect another output as circuit, the negative electrode of this output and the sustained diode 4 of boosting, the positive pole that output DC holds C joins.
When tested electrical verification source was DC power supply, V+, V-terminals were received in the output of DC power supply.Owing to adopted boosting inverter, therefore the AC power of input and DC power supply allow bigger excursion.In addition, the utility model can be applied to the tandem control of wound-rotor motor, the rotor winding of coiling electric motor is received ac input end A, B, the C of device at this moment, and ac output end U, the V of device, W receive the interior feedback winding of wire wound asynchronous motor or receive electrical network (or by receiving electrical network after the transformer isolation transformation).
The operation principle of soft boost switching circuit in the utility model: at S
AOr S
BWhen opening, D
4Reverse recovery current di/dt be absorbed inductance L
SRestriction makes S
AOr S
BOpen and D
4Turn-off power loss reduces.At S
AOr S
BDuring shutoff, S
AOr S
BThe shutoff voltage rate of climb because of absorbing capacitor C
S2Existence and reduce, thereby reduced S
AOr S
BTurn-off power loss, also reduced the EMI noise.D
4Also obtain the process that turns on and off of no-voltage.C is finally passed through in the energy storage that absorbs circuit
S1Discharge to the C discharge, do not cause energy loss.
By top analysis as can be known, the voltage of the electric current of resonant inductance, resonant capacitance and buffer capacitor all can be reduced to 0 in a work period, and energy absorption discharges, and goes round and begins again, and can't consume, and can not accumulate.In other words, resonance absorbing unit itself is what not consume with accumulation energy.Simultaneously, the effect of resonant inductance and resonant capacitance has limited the switching loss of main circuit, thereby improves the efficient of circuit.
The three-phase voltage-type inverter feedback energy is to the operation principle of electrical network in the utility model: three-phase voltage-type inverter becomes three-phase alternating voltage identical with the line voltage frequency but that amplitude and phase place can be regulated with the dc voltage conversion of input, by exchanging current limiting reactor access electrical network.Because the voltage magnitude and the phase place of inversion output can be regulated, thereby just can regulate reactive power and the active power that exchanges with electrical network.Control and protector are according to the inverter DC input voitage of gathering, the alternating current and the line voltage of output; by certain control algolithm; send the switching tube driving pulse of three-phase voltage-type inverter, control the alternating current size of output and stablizing of direct voltage.
Claims (4)
1, a kind of main circuit of high-energy feedback type electronic load device, it is characterized in that: comprise three phase full bridge diode rectifier, soft switch DC boosted switch converter, three-phase voltage-type inverter, three interchange current limiting reactors, the interchange input of described three phase full bridge diode rectifier is received by the test AC power, and the direct-flow input end of soft switch DC boosted switch converter is received in direct current output; The dc output end of soft switch DC boosted switch converter is received the direct-flow input end of three-phase voltage-type inverter; Three ac output ends of three-phase voltage-type inverter are received electrical network through three interchange current limiting reactors.
2, the main circuit of high-energy feedback type electronic load device according to claim 1, it is characterized in that: described soft switch DC boosted switch converter comprises the energy-storage reactor that boosts, two IGBT switching devices, reverse recovery current suppresses and overvoltage absorbs circuit, fly-wheel diode boosts, the output DC container, the positive output end of the described energy-storage reactor one termination three phase full bridge diode rectifier that boosts, another termination reverse recovery current inhibition and overvoltage absorb the input of circuit, the boost anode of fly-wheel diode of the output termination that reverse recovery current suppresses and overvoltage absorbs circuit, another output termination the boost negative electrode of fly-wheel diode and positive pole of output DC container, the collector electrode of two IGBT switching devices is also received the reverse recovery current inhibition and the input of overvoltage absorption circuit, the emitter of two IGBT switching devices connects the negative pole of direct current capacitor, the negative output terminal of three phase full bridge diode rectifier and reverse recovery current inhibition and overvoltage absorb the common port of circuit, and the control end of two IGBT switching devices connects pwm pulses respectively.
3, the main circuit of high-energy feedback type electronic load device according to claim 2, it is characterized in that: described reverse recovery current suppresses and overvoltage absorbs circuit by reactor (LS), capacitor (CS1, CS2), diode (D1-D3) is formed, the anode of one end of reactor (LS) and diode (D1) also connects input as circuit, one end of the other end of reactor (LS) and electric capacity (CS1) also connects a output as circuit, the boost anode of fly-wheel diode (D4) of this output termination, diode (D1-D3) is connected in series successively by the polarity order, the other end of electric capacity (CS1) is connected between the anode of the negative electrode of diode (D2) and diode (D3), one of electric capacity (CS2) terminates between the anode of the negative electrode of diode (D1) and diode (D2), the negative electrode of diode (D3) is as another output of circuit, the negative electrode of this output and fly-wheel diode (D4) that boost, the positive pole that output DC holds (C) joins, the other end of electric capacity (CS2) is as the common port of circuit, and the negative pole that this common port and output DC hold (C) joins.
4, soft switch DC boosted switch converter according to claim 2, it is characterized in that: described two IGBT switching devices adopt pulse width modulation, and driving pulse phase phasic difference 180 degree make that total boosted switch operating frequency is the twice of every IGBT operating frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050487 CN2805210Y (en) | 2005-03-16 | 2005-03-16 | Main circuit for high energy feed back type electronic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050487 CN2805210Y (en) | 2005-03-16 | 2005-03-16 | Main circuit for high energy feed back type electronic loading device |
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| Publication Number | Publication Date |
|---|---|
| CN2805210Y true CN2805210Y (en) | 2006-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050487 Expired - Fee Related CN2805210Y (en) | 2005-03-16 | 2005-03-16 | Main circuit for high energy feed back type electronic loading device |
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|---|---|
| CN (1) | CN2805210Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546913A (en) * | 2009-04-21 | 2009-09-30 | 上海追日电气有限公司 | Multifunctional high-power electronic load and control method thereof |
| CN102347618A (en) * | 2010-07-30 | 2012-02-08 | 广东易事特电源股份有限公司 | Three-phase energy feedback device |
| CN102412722A (en) * | 2010-09-22 | 2012-04-11 | 三菱电机株式会社 | Dc-dc converter |
| CN103698641A (en) * | 2013-12-31 | 2014-04-02 | 贵州电力试验研究院 | Energy feedback type electric equipment testing system and method |
| CN105490313A (en) * | 2015-11-27 | 2016-04-13 | 许继电源有限公司 | AC/DC common electronic load |
| CN106655765A (en) * | 2016-10-19 | 2017-05-10 | 佛山市柏克新能科技股份有限公司 | Boosting circuit with single input and double independent output and inversion device thereof |
| CN109459710A (en) * | 2018-12-29 | 2019-03-12 | 四川太牛电子科技有限公司 | A kind of exchange feedback auto-parallel electronic load and its working method |
| CN110247387A (en) * | 2019-05-31 | 2019-09-17 | 武汉华中数控股份有限公司 | Servo-driven module with fault-tolerance |
| CN113219369A (en) * | 2021-05-13 | 2021-08-06 | 广东威恒输变电工程有限公司 | Test method for testing cross-connection performance of cables in laying site |
-
2005
- 2005-03-16 CN CN 200520050487 patent/CN2805210Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546913A (en) * | 2009-04-21 | 2009-09-30 | 上海追日电气有限公司 | Multifunctional high-power electronic load and control method thereof |
| CN102347618A (en) * | 2010-07-30 | 2012-02-08 | 广东易事特电源股份有限公司 | Three-phase energy feedback device |
| CN102412722B (en) * | 2010-09-22 | 2014-12-10 | 三菱电机株式会社 | Dc-dc converter |
| CN102412722A (en) * | 2010-09-22 | 2012-04-11 | 三菱电机株式会社 | Dc-dc converter |
| CN103698641B (en) * | 2013-12-31 | 2016-05-25 | 贵州电力试验研究院 | Energy-feedback consumer test macro and method |
| CN103698641A (en) * | 2013-12-31 | 2014-04-02 | 贵州电力试验研究院 | Energy feedback type electric equipment testing system and method |
| CN105490313A (en) * | 2015-11-27 | 2016-04-13 | 许继电源有限公司 | AC/DC common electronic load |
| CN105490313B (en) * | 2015-11-27 | 2018-11-20 | 许继电源有限公司 | A kind of alternating current-direct current shared electron load |
| CN106655765A (en) * | 2016-10-19 | 2017-05-10 | 佛山市柏克新能科技股份有限公司 | Boosting circuit with single input and double independent output and inversion device thereof |
| CN106655765B (en) * | 2016-10-19 | 2024-03-22 | 航天柏克(广东)科技有限公司 | Single-input double-independent-output boost circuit and inverter thereof |
| CN109459710A (en) * | 2018-12-29 | 2019-03-12 | 四川太牛电子科技有限公司 | A kind of exchange feedback auto-parallel electronic load and its working method |
| CN110247387A (en) * | 2019-05-31 | 2019-09-17 | 武汉华中数控股份有限公司 | Servo-driven module with fault-tolerance |
| CN110247387B (en) * | 2019-05-31 | 2021-03-16 | 武汉华中数控股份有限公司 | Servo driving module with fault tolerance |
| CN113219369A (en) * | 2021-05-13 | 2021-08-06 | 广东威恒输变电工程有限公司 | Test method for testing cross-connection performance of cables in laying site |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: LIU WENHUA Owner name: SIE YUAN ELECTRIC CO.,LTD. Free format text: FORMER OWNER: LIU WENHUI Effective date: 20100809 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410009 NO.208, BUILDING 7, XINTIAN RESIDENTIAL QUARTER, XINKAIPU, CHANGSHA CITY, HUNAN PROVINCE TO: 201108 F ZONE, BUILDING 2, NO.999, ZHUANXING ROAD, MINXING DISTRICT, SHANGHAI CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100809 Address after: 201108 Shanghai city Minhang District Zhuan Hing Road No. 999 Building 2 F zone Patentee after: Sieyuan Qingneng Power Electronic Co., Ltd. Address before: 410009 No. 7, No. 208, Xintian District, Changsha, Hunan Co-patentee before: Liu Wenhua Patentee before: Liu Wenhui |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060809 Termination date: 20140316 |