CN202305607U - Electronic load device, direct current electronic load and alternating current electronic load - Google Patents
Electronic load device, direct current electronic load and alternating current electronic load Download PDFInfo
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- CN202305607U CN202305607U CN 201120400994 CN201120400994U CN202305607U CN 202305607 U CN202305607 U CN 202305607U CN 201120400994 CN201120400994 CN 201120400994 CN 201120400994 U CN201120400994 U CN 201120400994U CN 202305607 U CN202305607 U CN 202305607U
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Abstract
The utility model relates to an electronic load device, a direct current electronic load and an alternating current electronic load. The electronic load device comprises a three-phase alternating current terminal, a soft-start contactor, a soft-start resistor, a main contactor, a high-frequency filter, a current sampler, an electric network voltage sampler, a pulse-width modulation (PWM) rectifier bridge, a bus capacitor, a direct current bus voltage sampler, a direct current terminal, a control unit and a monitoring background, wherein the electric network voltage sampler is connected with an input end of the soft-start contactor and an input end of the main contactor; the soft-start resistor is connected between an output end of the soft-start contactor and an output end of the main contactor; the output end of the main contactor is connected with an input end of the high-frequency filter; the current sampler is positioned between the high-frequency filter and the PWM rectifier bridge; the PWM rectifier bridge is connected with the control unit; an output end of the PWM rectifier bridge is parallelly connected with the bus capacitor and the direct current bus voltage sampler; and the control unit is connected with the monitoring background. One or more electronic load devices form a variety of direct current electronic loads and alternating current electronic loads or combinations of the direct current electronic loads and the alternating current electronic loads. The electronic load device has the characteristics of being easily expanded in volume, simulating a variety of load operating conditions and the like.
Description
Technical field
The utility model relates to a kind of electronic load device, DC electronic load and alternating current electronic load.
Background technology
High speed development along with Power Electronic Technique; Various power electronic equipments such as frequency converter, uninterrupted power supply (ups) Unity, Active Power Filter-APF, battery charger and reactive-load compensation equipment etc.; Electric power, lifting, new forms of energy, metallurgy, chemical system and various experiment test platform have been applied to widely; And capacity also is increasing, and the equipment of MW class emerges in an endless stream.In the research and development and production run of these equipment, often need whether satisfy customer requirements with checking institute development product in various actual condition running experiment tests.Electronic load equipment can help power electronic equipment to accomplish experiment, test and produce relevant works such as aging.Traditional electronic load is done fictitious load by high-power inductance, electric capacity and resistance; Not only energy consumption is bigger; And can not simulate any power factor and the arbitrarily linearity and the nonlinear load of current waveform; Test and experiment are greatly limited, and along with the increase of Devices to test capacity to the consumption of electric energy with realize that difficulty also increases thereupon.
Electronic load device relates to Power Electronic Technique, Computer Control Technology and automated information technology, can simulate various not collinearitys and nonlinear load form as required.Energy regenerative type electronic load can feed back to electrical network efficiently with the electric energy that absorbs, and has that dynamic property is good, harmonic current is little and characteristics such as power factor height.
Occur some patented technologies in recent years and solved this type of problem, as:
The patent No. 200610041939.8, title: energy feedback type AC/DC electronic load simulator;
The patent No. 200920318516.5, title: the energy AC/DC electronic load simulator of three-phase;
The technical method that above-mentioned two patents are disclosed has been realized load simulation and energy circulation utilization, but for the high-power electric and electronic load device following shortcoming is arranged still:
(1) capacity is less, and dilatation is difficult, owing to be subject to some crucial power electronic devices such as IGBT, along with the increase of capacity, corresponding techniques difficulty and cost explode;
(2) device can only provide alternating current electronic load maybe can only provide DC electronic load or orthogonal stream electronic load to switch inconvenient.
The utility model content
The utility model technical matters to be solved is to overcome existing above-mentioned deficiency in the prior art, and a kind of easy parallel operation dilatation is provided, can simulates multiple direct current and AC load operating mode, simple and reasonable, with low cost, practicable electronic load device, DC electronic load and alternating current electronic load.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this electronic load device; It is characterized in that said electronic load device comprises three-phase alternating current terminals, soft contactor, soft resistance, main contactor, high frequency filter, current sample, line voltage sampling, PWM rectifier bridge, bus capacitor, DC bus-bar voltage sampling, direct current terminals, control module and the monitoring backstage of opening of opening; Line voltage sampling with softly open the contactor input end, the main contactor input end all is connected; The soft resistance that opens is connected soft opening between contactor output terminal, the main contactor output terminal; The main contactor output terminal is connected with the high frequency filter input end; Current sample is between high frequency filter and PWM rectifier bridge; The PWM rectifier bridge is connected with control module, and the PWM rectification bridge output end also is connected to bus capacitor and the DC bus-bar voltage sampling, and control module is connected with the monitoring backstage.
The utility model solves the problems of the technologies described above the technical scheme that is adopted and also comprises a kind of DC electronic load; The ac terminal that it is characterized in that aforesaid electronic load device is connected to electrical network through switch, and the direct current terminals of said electronic load device are connected with the direct current Devices to test.
The utility model solves the problems of the technologies described above the technical scheme that is adopted and also comprises a kind of DC electronic load; Comprise two above electronic load devices; The ac terminal of two above electronic load devices connects together and is connected to electrical network through switch, and the direct current terminals of two above electronic load devices are connected in parallel and are connected with the direct current Devices to test.
The utility model solves the problems of the technologies described above the technical scheme that is adopted and also comprises a kind of alternating current electronic load; It is characterized in that an aforesaid electronic load device is as the front end electronic load device; Aforesaid another electronic load device is as the rear end electronic load device; The ac terminal of said front end electronic load device is connected to electrical network through switch; The direct current terminals of front end electronic load device are connected with the direct current terminals of rear end electronic load device, and the ac terminal of rear end electronic load device is connected with the interchange Devices to test.
The utility model solves the problems of the technologies described above the technical scheme that is adopted and also comprises a kind of alternating current electronic load; It is characterized in that aforesaid electronic load device constitutes front end electronic load device group more than two; Aforesaid electronic load device constitutes rear end electronic load device group more than two; The ac terminal of each electronic load device of said front end electronic load device group connects together and constitutes the ac terminal of front end electronic load device group and be connected to electrical network through switch; The direct current terminals of each electronic load device in the front end electronic load device group connect together and constitute the direct current terminals of front end electronic load device group; The direct current terminals of each electronic load device of rear end electronic load device group connect together and constitute the direct current terminals of rear end electronic load device group; The direct current terminals of front end electronic load device group are connected with the direct current terminals of rear end electronic load device group, the ac terminal of each electronic load device of said rear end electronic load device group connect together the ac terminal that constitutes rear end electronic load device group and with exchange Devices to test and be connected.
Each electronic load device of the utility model all can work in rectification pattern or inverter mode, can monitor the backstage through it and select, and accomplishes the setting to mode of operation; Through wire jumper on veneer, can select to be operated in unit, main frame and slave operational mode.
When each electronic load device of the utility model is operated in inverter mode; Electronic load device adopts single current loop control or Voltage loop and the control of electric current loop dicyclo; According to vector control algorithm and space vector (SVPWM) modulation technique; The three-phase output voltage and the setting value of real-time sampling are compared, handle, the instruction of output active current through pi regulator; Instruction of given active current and referenced reactive current carry out comparison with the respective electrical stream of real-time sampling, handle through pi regulator, finally drive rectifier bridge, make active current, reactive current or three-phase alternating voltage that device sends to be needed.
When each electronic load device of the utility model was operated in the rectification pattern, electronic load device adopted the control of electric current and voltage dicyclo, with the DC bus-bar voltage of real-time sampling and setting value relatively, handled through pi regulator, and the output active current is instructed; According to vector controlled thought and space vector of voltage (SVPWM) thought; Given active current instruction referenced reactive current; Compare with the electric current of real-time sampling; Handle through pi regulator, finally drive rectifier bridge, current on line side waveform and the control DC side busbar voltage and the power factor that make its outputting high quality are within the specific limits.
During the said electronic load device parallel running of the utility model; Through wire jumper on veneer; (or more than two a) electronic load device is configured to main frame, and other electronic load devices are configured to slave, realize carrier synchronization and send out wave datum mutual between main frame, the slave through optical fiber communication.Main frame calculates the time that control IGBT turns on and off according to receiving the data and its data that sample that slave sends, and controls the turning on and off of IGBT of self, and gives slave with this data transmission; Slave keeps a ripple synchronous according to carrier synchronization signal and the main frame that the reception main frame sends, and according to turning on and off of the Data Control IGBT that receives the main frame transmission, realizes that the ac current waveform of principal and subordinate's machine is in full accord.
The beneficial effect of the utility model is:
L, the non-linear and linear load that can simulate any direct current or ac current waveform; The reactive current or the active current of rated capacity can be sent, dynamic property can be carried out, the energy two-way flow; System's heating; Intermittent operation, power electronics in-site modeling requirement complicated and changeable is satisfied in various experiments such as fault simulation and test;
2, the parallel operation dilatation is convenient, and the electronic load device parallel connection with 6 200kW can realize the application scenario that MW class is above; If increase the number of parallel operation, can satisfy more jumbo application scenario;
3, energy is recycled, reduce electric energy loss greatly;
4, simple and reasonable, easy to operate;
5, with low cost.
Description of drawings
Fig. 1 is the structural representation of the utility model electronic load device.
Fig. 2 is the structural representation of the unit direct current output embodiment of the utility model DC electronic load.
Fig. 3 is the structural representation that the unit of the utility model alternating current electronic load exchanges output embodiment.
Fig. 4 is the structural representation of the parallel operation direct current output embodiment of the utility model DC electronic load.
Fig. 5 is the structural representation that the parallel operation of the utility model alternating current electronic load exchanges output embodiment.
Embodiment
In conjunction with accompanying drawing and embodiment the utility model is carried out further detailed description.
Referring to Fig. 1, the utility model embodiment electronic load device 16 comprises (three-phase) interchange and connects terminals 1, soft contactor 3, soft resistance 5, main contactor 4, high frequency filter 6, current sample 8, line voltage sampling 2 (before being positioned at main contactor 4), PWM rectifier bridge 9, bus capacitor 11, DC bus-bar voltage sampling 12, direct current terminals 13, control module 10 and the monitoring backstage 7 of opening of opening; Line voltage sampling 2 is ac terminal 1 and soft opening between contactor 3 input ends and main contactor 4 input ends; The soft resistance 5 that opens is connected soft opening between contactor 3 output terminals and main contactor 4 output terminals; Main contactor 4 output terminals are connected with high frequency filter 6 input ends; Current sample 8 is between high frequency filter 6 and PWM rectifier bridge 9, and PWM rectifier bridge 9 is connected with control module 10, and the dc terminal of PWM rectifier bridge 9 also is connected to bus capacitor 11 and DC bus-bar voltage sampling 12; Direct current terminals 13 are connected with DC bus-bar voltage sampling 12, and control module 9 is connected with monitoring backstage 6.
Said high frequency filter 6 adopts the LCL high frequency filter, and the HF voltage when acting as 9 switch motions of PWM rectifier bridge carries out filtering, reduces to output to the harmonic current of electrical network.
Fig. 2 be the load of the utility model DC electronic the structural representation of unit direct current output embodiment; Comprise switch 15, electronic load device 16; Electronic load device 16 ac terminal 1 are connected to electrical network 14 through switch 15, and electronic load device 16 direct current terminals 13 are connected with direct current Devices to test 50.
Fig. 3 be the utility model alternating current electronic load unit exchange the structural representation of output embodiment 30; Comprise switch 15, front end electronic load device 17 (constituting), rear end electronic load device 18 (constituting) by another electronic load device 16 by an electronic load device 16; Front end electronic load device 17 ac terminal are connected to electrical network 14 through switch 15; Front end electronic load device 17 direct current terminals are connected with rear end electronic load device 18 direct current terminals, and electronic load device 18 ac terminal in rear end are connected with interchange Devices to test 60.
Fig. 4 is the structural representation of the parallel operation direct current output embodiment of the utility model DC electronic load; Described electronic load device 16 is more than two; The connect together direct current terminals that are connected to 14, two above electronic load devices 16 of electrical network through switch 15 of the ac terminal of two above electronic load devices 16 are connected in parallel and are connected with direct current Devices to test 50.Special case is three electronic load device 16 parallel connections.According to the method that connects of present embodiment, can the more electronic load device 16 of parallel connection, bigger DC current is provided.
Fig. 5 is the structural representation that the parallel operation of the utility model alternating current electronic load exchanges output embodiment; Comprise that (several) electronic load device 16 constitutes front end electronic load device group 20 more than two; (several) electronic load device 16 formation rear end electronic load device groups 30 more than two; The ac terminal of each electronic load device 16 of said front end electronic load device group 20 connects together and constitutes the ac terminal of front end electronic load device group 20 and be connected to electrical network 14 through switch 15; The direct current terminals of each electronic load device 16 in the front end electronic load device group 20 connect together and constitute the direct current terminals of front end electronic load device group 20; The direct current terminals of each electronic load device 16 of rear end electronic load device group 30 connect together and constitute the direct current terminals of rear end electronic load device group 30; The direct current terminals of front end electronic load device group 20 are connected with the direct current terminals of rear end electronic load device group 30, the ac terminal of each electronic load device 16 of said rear end electronic load device group 30 connect together the ac terminal that constitutes rear end electronic load device group 30 and with exchange Devices to test 60 and be connected.According to the method that connects of present embodiment, can the more electronic load device 16 of parallel connection, bigger alternating current is provided.
The operation steps of the utility model unit direct current output embodiment:
1) selecting the mode of operation of electronic load device 16 through the monitoring backstage 7 of electronic load device 16 is the rectification pattern;
2) Closing Switch 15, and whole device is inserted electrical network 14;
3) monitoring backstage 7 softwares through electronic load device 16 send the soft order of opening, and give its bus capacitor 11 chargings through the soft circuit that opens of electronic load device 16;
4) soft opening after charging accomplishes sent action command, makes electronic load device 16 be in the modulation running status;
5) the DC bus-bar voltage output of setting electronic load device 16 is given, makes the different curve of its output, the actual condition of analog DC Devices to test 50.
It is as shown in Figure 3 that the utility model unit exchanges output embodiment, operation steps:
1) selecting the mode of operation of front end electronic load device 17 through the monitoring backstage 7 of front end electronic load device 17 is the rectification pattern, and the mode of operation of rear end electronic load device 18 is an inverter mode;
2) Closing Switch 15, and whole device is inserted electrical network 14;
3) through monitoring backstage 7 softwares of front end electronic load device 17, send the soft order of opening, give its bus capacitor 11 chargings through the soft circuit that opens of front end electronic load device 17;
4) soft opening after charging accomplishes sent action command, makes front end electronic load device 17 and rear end electronic load device 18 all be in the modulation running status;
5) amplitude, the frequency of the interchange three-phase voltage electric current output of setting rear end electronic load device 18 are given and idle given, make the different curve of its output, the actual condition of analog AC Devices to test 60.
Embodiment is as shown in Figure 4 for the output of the utility model parallel operation direct current, operation steps:
1) selecting one in several electronic load devices 16 through wire jumper is main frame, other be set to slave;
2) mode of operation that main frame is set is the rectification pattern, and the mode of operation of slave also is set to the rectification pattern by main frame;
3) Closing Switch 15, and whole device is inserted electrical network 14;
4) through the monitoring daemon software of main frame, send the soft order of opening, each load device all charges to bus capacitor through its soft circuit that opens;
5) soft opening after charging accomplishes sent action command, makes main frame be in the modulation running status, and the communication data that slave receives main frame all is in the modulation running status;
6) it is given to set the DC bus-bar voltage output of each load device, makes the different curve of its output, the actual condition of analog DC Devices to test 50.
It is as shown in Figure 5 that the utility model parallel operation exchanges output embodiment, operation steps:
1) selecting a load device of front end 20 1 load devices of electronic load device group and rear end electronic load device group 30 through wire jumper is main frame, and the equal correspondence of other load device is set to slave;
2) each electronic load device 16 mode of operation through front end electronic load device group 20 host setting front end electronic load device groups 20 are the rectification pattern; The mode of operation of rear end electronic load device group 30 host setting rear end electronic load device group 30 each electronic load device 16 is inverter mode;
3) Closing Switch 15, and whole device is inserted electrical network 14;
4) front end electronic load device group 20 main frames send soft order, the bus capacitor bulk charge of front end electronic load device group 20 each electronic load device 16 of opening; Rear end electronic load device group 30 main frames send soft order, the bus capacitor bulk charge of rear end electronic load device group 30 each electronic load device 16 of opening;
5) soft opening after charging accomplishes, front end electronic load device group 20 main frames, rear end electronic load device group 30 main frames send the soft order of opening respectively, make each electronic load device 16 all be in the modulation running status;
6) amplitude, the frequency of the interchange three-phase voltage electric current output of setting rear end electronic load device group 30 main frames are given and idle given, make the different curve of its output, the actual condition of analog AC Devices to test 60.
Simple deformation of every the utility model or equivalent transformation should be thought the protection domain that falls into the utility model.
Claims (5)
1. electronic load device; It is characterized in that: said electronic load device comprises three-phase alternating current terminals, soft contactor, soft resistance, main contactor, high frequency filter, current sample, line voltage sampling, PWM rectifier bridge, bus capacitor, DC bus-bar voltage sampling, direct current terminals, control module and the monitoring backstage of opening of opening; Line voltage sampling with softly open the contactor input end, the main contactor input end all is connected; The soft resistance that opens is connected soft opening between contactor output terminal, the main contactor output terminal; The main contactor output terminal is connected with the high frequency filter input end, and current sample is between high frequency filter and PWM rectifier bridge, and the PWM rectifier bridge is connected with control module; The PWM rectification bridge output end also is connected to bus capacitor and the DC bus-bar voltage sampling, and control module is connected with the monitoring backstage.
2. DC electronic load, it is characterized in that: the ac terminal of the described electronic load device of claim 1 is connected to electrical network through switch, and the direct current terminals of said electronic load device are connected with the direct current Devices to test.
3. DC electronic load according to claim 2; It is characterized in that: described electronic load device is more than two; The ac terminal of two above electronic load devices connects together and is connected to electrical network through switch, and the direct current terminals of two above electronic load devices are connected in parallel and are connected with the direct current Devices to test.
4. alternating current electronic load; It is characterized in that: the described electronic load device of claim 1 is as the front end electronic load device; The described electronic load device of another claim 1 is as the rear end electronic load device; The ac terminal of said front end electronic load device is connected to electrical network through switch, and the direct current terminals of front end electronic load device are connected with the direct current terminals of rear end electronic load device, and the ac terminal of rear end electronic load device is connected with the interchange Devices to test.
5. alternating current electronic load; It is characterized in that: two described electronic load devices of above claim 1 constitute front end electronic load device group; Electronic load device as claimed in claim 1 constitutes rear end electronic load device group more than two; The ac terminal of each electronic load device of said front end electronic load device group connects together and constitutes the ac terminal of front end electronic load device group and be connected to electrical network through switch; The direct current terminals of each electronic load device in the front end electronic load device group connect together and constitute the direct current terminals of front end electronic load device group; The direct current terminals of each electronic load device of rear end electronic load device group connect together and constitute the direct current terminals of rear end electronic load device group; The direct current terminals of front end electronic load device group are connected with the direct current terminals of rear end electronic load device group, the ac terminal of each electronic load device of said rear end electronic load device group connect together the ac terminal that constitutes rear end electronic load device group and with exchange Devices to test and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400994 CN202305607U (en) | 2011-10-20 | 2011-10-20 | Electronic load device, direct current electronic load and alternating current electronic load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400994 CN202305607U (en) | 2011-10-20 | 2011-10-20 | Electronic load device, direct current electronic load and alternating current electronic load |
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| Publication Number | Publication Date |
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| CN202305607U true CN202305607U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120400994 Expired - Fee Related CN202305607U (en) | 2011-10-20 | 2011-10-20 | Electronic load device, direct current electronic load and alternating current electronic load |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301520A (en) * | 2015-11-24 | 2016-02-03 | 北京东方计量测试研究所 | Adjustable nonlinear load configuration system |
| CN107908135A (en) * | 2017-11-29 | 2018-04-13 | 常州同惠电子股份有限公司 | The Digital Implementation method of DC Electronic Loads soft start |
| CN108267622A (en) * | 2018-01-22 | 2018-07-10 | 常州同惠电子股份有限公司 | A kind of electronic load device with electric voltage reverse-connection defencive function |
| CN109061247A (en) * | 2018-09-03 | 2018-12-21 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of high-pressure frequency-conversion exchange constant power load simulator |
| CN109270312A (en) * | 2018-09-03 | 2019-01-25 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of more electric aircraft self coupling vertoro load simulating devices |
| CN111123011A (en) * | 2016-09-13 | 2020-05-08 | 艾德克斯电子（南京）有限公司 | Electronic load device and parallel operation system thereof |
-
2011
- 2011-10-20 CN CN 201120400994 patent/CN202305607U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301520A (en) * | 2015-11-24 | 2016-02-03 | 北京东方计量测试研究所 | Adjustable nonlinear load configuration system |
| CN105301520B (en) * | 2015-11-24 | 2018-01-16 | 北京东方计量测试研究所 | Adjustable nonlinear load configures system |
| CN111123011A (en) * | 2016-09-13 | 2020-05-08 | 艾德克斯电子（南京）有限公司 | Electronic load device and parallel operation system thereof |
| CN107908135A (en) * | 2017-11-29 | 2018-04-13 | 常州同惠电子股份有限公司 | The Digital Implementation method of DC Electronic Loads soft start |
| CN107908135B (en) * | 2017-11-29 | 2020-09-08 | 常州同惠电子股份有限公司 | Digital implementation method for soft start of direct current electronic load |
| CN108267622A (en) * | 2018-01-22 | 2018-07-10 | 常州同惠电子股份有限公司 | A kind of electronic load device with electric voltage reverse-connection defencive function |
| CN109061247A (en) * | 2018-09-03 | 2018-12-21 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of high-pressure frequency-conversion exchange constant power load simulator |
| CN109270312A (en) * | 2018-09-03 | 2019-01-25 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of more electric aircraft self coupling vertoro load simulating devices |
| CN109270312B (en) * | 2018-09-03 | 2021-06-01 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Load simulation device for auto-transformer rectifier of multi-electric aircraft |
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Owner name: SHANGHAI HI-TECH CONTROL SYSTEM CO., LTD. Free format text: FORMER OWNER: ZHEJIANG HAIDE NEW ENERGY CO., LTD. Effective date: 20140504 |
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Effective date of registration: 20140504 Address after: 201114, No. 777, Chun Chun Road, Shanghai, Minhang District Patentee after: Shanghai Haide Control System Co., Ltd. Address before: 314500, No. 1320, No. 2 South Road, Hangzhou, Zhejiang, Tongxiang Patentee before: Zhejiang Haide New Energy Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20181020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |