CN204228843U - A kind of AC network simulator topological structure - Google Patents
A kind of AC network simulator topological structure Download PDFInfo
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- CN204228843U CN204228843U CN201420555419.9U CN201420555419U CN204228843U CN 204228843 U CN204228843 U CN 204228843U CN 201420555419 U CN201420555419 U CN 201420555419U CN 204228843 U CN204228843 U CN 204228843U
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Abstract
The utility model relates to a kind of AC network simulator topological structure, this topological structure comprises first-harmonic inversion unit and harmonic wave inversion unit, described first-harmonic inversion unit comprises first-harmonic inverter, first-harmonic wave filter and Industrial Frequency Transformer, described harmonic wave unit comprises harmonic wave inversion unit, harmonic filter and high-frequency transformer, described Industrial Frequency Transformer and high-frequency transformer are equivalent to coupling transformer, and the voltage waveform exported containing harmonic wave forms is subject to measurement equipment to detecting.The utility model is a kind of AC network simulator novel topology, the design of first-harmonic inversion unit and harmonic wave inversion unit main circuit can be simplified, and the harmonic wave ability of AC network simulator can be improved, the development of the AC network simulator of high precision harmonic wave can be promoted.
Description
Technical field
The utility model relates to a kind of AC network simulator novel topology, particularly a kind of AC network simulator topological structure detecting distributed generation system and power compensation equipment.
Background technology
At present, the circuit topological structure of most of AC network simulator does not often have special harmonic generation circuit, therefore causes harmonic wave quality undesirable, is not suitable with the popularization of modern distributive electricity generation system.Develop rapidly distributed generation system, make the requirement of the grid-connected ability detection to it more and more higher.This has higher requirement to the output quality of the higher hamonic wave of AC network simulator.So must design corresponding harmonic wave generation topological structure to support the requirement of harmonic wave, rational circuit topological structure can make the output quality of harmonic wave outstanding.
Summary of the invention
The utility model be for a set of filter structure of the many uses of circuit topological structure of present AC network simulator or first-harmonic together with harmonic structure multinest, harmonic controling scheme selection is caused to have certain restriction, thus cause the of low quality of output harmonic wave and the number of times of output harmonic wave is restricted, for the problem that this harmonic wave is limited in one's ability, propose a kind of AC network simulator novel topology, many shortcomings of present electrical network simulator can be overcome.
In order to solve the problem, the technical solution of the utility model is: a kind of AC network simulator topological structure, it is characterized in that the first-harmonic inversion unit that this topological structure comprises first-harmonic rectification unit and is connected with first-harmonic rectification unit, harmonic wave rectification unit and the harmonic wave inversion unit be connected with harmonic wave rectification unit, described first-harmonic inversion unit comprises first-harmonic inverter, first-harmonic wave filter and Industrial Frequency Transformer, described harmonic wave unit comprises harmonic wave inversion unit, harmonic filter and high-frequency transformer, described Industrial Frequency Transformer and high-frequency transformer are equivalent to coupling transformer, the voltage waveform exported containing harmonic wave forms is subject to measurement equipment to detecting.First-harmonic unit and harmonic wave unit are made up of three subelements of the three-phase being respectively used to simulating grid respectively.
First-harmonic rectification unit is connected with first-harmonic inversion unit, galvanic current pressure is provided for giving first-harmonic inversion unit, harmonic wave rectification unit is connected with harmonic wave inversion unit, galvanic current pressure is provided for giving harmonic wave inversion unit, after first-harmonic inversion unit receives the DC voltage of first-harmonic rectification unit output, DC voltage is reverse into and exchanges pwm pulse voltage, first-harmonic wave filter is to this interchange pwm pulse voltage filter, obtain the first-harmonic sinusoidal voltage that frequency is power frequency, equally, after harmonic wave inversion unit receives the DC voltage of harmonic wave rectification unit output, DC voltage is reverse into and exchanges pwm pulse voltage, harmonic filter is to this interchange pwm pulse voltage filter, obtain harmonic sine alternating voltage, first-harmonic wave filter is connected with high-frequency transformer with Industrial Frequency Transformer respectively with the output terminal of harmonic filter, make it to be equivalent to coupling transformer.Export the voltage waveform containing harmonic wave forms by coupling transformer, then export to and detect by measurement equipment (EUT).First-harmonic wave filter is identical with harmonic filter version, but first-harmonic wave filter carries out filtering for power frequency waveform, the quality of the wave filter required is lower, choosing of magnetic core can select crystalline material, cutoff frequency is chosen at about 90 ~ 110Hz, and for the filtering that harmonic filter carries out for high-frequency harmonic, the filter quality of requirement is very high, magnetic core is chosen and is selected amorphous magnetic core material, and cutoff frequency is chosen at about 2000 ~ 2400Hz.First-harmonic inversion unit comprises A, B, C three-phase, and harmonic wave inversion unit comprises a, b, c three-phase, and the topological structure of each phase in Unit two is the same.
The utility model relates to a kind of AC network simulator novel topology, this AC network simulator is divided into fundamental mode and harmonic mode two kinds of working methods, main circuit topology adopts the wave filter of two cover parameters, be called first-harmonic wave filter and harmonic filter, be respectively used to first-harmonic and export the filtering with harmonic wave, when AC network simulator is operated under fundamental mode, only has first-harmonic wave filter in main circuit; When being operated under harmonic mode, first-harmonic wave filter can be together in series with harmonic filter, then by transformer, fundamental waveform and harmonic wave forms lotus root being closed, exporting the test voltage wave containing expecting harmonic wave forms.The utility model is a kind of AC network simulator novel topology, the design of first-harmonic inversion unit and harmonic wave inversion unit main circuit can be simplified, and the harmonic wave ability of AC network simulator can be improved, the development of the AC network simulator of high precision harmonic wave can be promoted.
Accompanying drawing explanation
Fig. 1 is the one-piece construction figure of a kind of AC network simulator of the utility model novel topology.
Embodiment
Fig. 1 is a kind of one-piece construction figure of AC network simulator novel topology.As shown in the figure, electrical network is connected with the input end of first-harmonic rectification unit 1 and harmonic wave rectification unit, the output terminal of first-harmonic rectification unit is connected with the input end of three subelements of first-harmonic inversion unit respectively, the output terminal of three subelements of first-harmonic inversion unit is connected with the input end of Industrial Frequency Transformer respectively by a first-harmonic wave filter, the output terminal of harmonic wave rectification unit is connected with the input end of three subelements of harmonic wave inversion unit respectively, the output terminal of three subelements of ripple inversion unit is connected with the input end of high-frequency transformer respectively by inversion wave filter, Industrial Frequency Transformer then with by measurement equipment (EUT) 9 is connected with the output terminal of high-frequency transformer.
There is provided three-phase alternating voltage to respectively first-harmonic rectification unit and harmonic wave rectification unit by electrical network, the required energy of two kinds of rectification units is provided, them are enable to export respective DC voltage, ABC three-phase circuit in first-harmonic inversion unit all provides DC voltage by first-harmonic rectification unit 1, abc three-phase circuit in harmonic wave inversion unit 11 all provides DC voltage by harmonic wave rectification unit 5, after the inverter bridge 2 of the ABC three-phase in first-harmonic inversion unit 10 obtains the DC voltage inputted, inversion obtains single-phase fundamental alternating voltage, by the filter action of first-harmonic wave filter 3, the non-expectation harmonic filtration in output waveform is fallen, output single-phase first-harmonic sinusoidal voltage, after the inverter bridge 6 of the abc three-phase in harmonic wave inversion unit 11 obtains the DC voltage inputted, inversion obtains harmonic alternating current voltage, by the filter action of the harmonic filter 7 in harmonic wave inversion unit 6, non-expectation harmonic filtration in waveform is fallen, output single-phase harmonic sine alternating voltage, the Industrial Frequency Transformer 4 of the abc three phase harmonic sinusoidal voltage that the ABC three-phase first-harmonic sinusoidal voltage of first-harmonic inversion unit 10 output and harmonic wave inversion unit 11 export respectively by ABC three-phase and the coupling of the high frequency transformation 8 of abc three-phase, two-part addition of waveforms together, obtain the three-phase alternating voltage containing harmonic wave forms, for detecting by measurement equipment (EUT) 9.
In order to export unbalanced electric network fault, the first-harmonic unit of this AC network simulator and harmonic wave unit are made up of three subelements respectively, are respectively used to the three-phase of simulating grid.First-harmonic inversion unit topological circuit of the present utility model separates with harmonic wave inversion unit topological circuit and designs, adopt the filtering circuit of two cover parameters, reduce influencing each other between the two, eventually pass being coupled of Industrial Frequency Transformer and high-frequency transformer, export the voltage waveform containing harmonic wave forms.
When AC network simulator is operated under fundamental mode, only has first-harmonic wave filter in main circuit; When being operated under harmonic mode, first-harmonic wave filter can be together in series with harmonic filter, then by transformer, fundamental waveform and harmonic wave forms lotus root being closed, exporting the test voltage wave containing expecting harmonic wave forms.When first-harmonic works independently, now first-harmonic transformer connects separately in circuit, harmonic wave is input as 0, the effect not having to be coupled can be regarded as, but when principal wave harmonic wave works together, first-harmonic transformer and humorous wave transformer are equivalent to three-winding transformer, and three winding is: the winding connecting first-harmonic, connect the winding of harmonic wave, export the winding after first-harmonic and Harmonic coupling.
AC network simulator of the present utility model is divided into first-harmonic inversion unit and harmonic wave inversion unit, fundamental waveform and harmonic wave forms are exported by two unit respectively, then be coupled with high-frequency transformer by Industrial Frequency Transformer, the voltage waveform containing harmonic wave forms of outputting high quality.This topological structure, can make first-harmonic separate with the control algolithm of harmonic wave and design, be suitable for the popularization of AC network simulator topological structure.
Claims (2)
1. an AC network simulator topological structure, it is characterized in that the first-harmonic inversion unit that this topological structure comprises first-harmonic rectification unit and is connected with first-harmonic rectification unit, harmonic wave rectification unit and the harmonic wave inversion unit be connected with harmonic wave rectification unit, described first-harmonic inversion unit comprises first-harmonic inverter, first-harmonic wave filter and Industrial Frequency Transformer, described harmonic wave unit comprises harmonic wave inversion unit, harmonic filter and high-frequency transformer, described Industrial Frequency Transformer and high-frequency transformer are equivalent to coupling transformer, the voltage waveform exported containing harmonic wave forms is subject to measurement equipment to detecting.
2. a kind of AC network simulator topological structure as claimed in claim 1, is characterized in that first-harmonic unit and harmonic wave unit are made up of three subelements of the three-phase being respectively used to simulating grid respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420555419.9U CN204228843U (en) | 2014-09-25 | 2014-09-25 | A kind of AC network simulator topological structure |
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| CN201420555419.9U CN204228843U (en) | 2014-09-25 | 2014-09-25 | A kind of AC network simulator topological structure |
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| CN201420555419.9U Expired - Fee Related CN204228843U (en) | 2014-09-25 | 2014-09-25 | A kind of AC network simulator topological structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105763124A (en) * | 2016-03-16 | 2016-07-13 | 中国第汽车股份有限公司 | PMSM torque ripple controlling means and system |
| CN106487240A (en) * | 2015-08-28 | 2017-03-08 | 中国电力科学研究院 | A kind of grid simulator with accurate harmonic voltage and virtual impedance control |
| CN107196537A (en) * | 2017-06-05 | 2017-09-22 | 合肥工业大学 | Simulate device and control method that the harmonious wave voltage of synchronous generator characteristic occurs |
| CN107294095A (en) * | 2017-06-20 | 2017-10-24 | 合肥工业大学 | Occur the system and control method with ZIP virtual loads with harmonic voltage |
| CN107332231A (en) * | 2017-06-13 | 2017-11-07 | 合肥工业大学 | Suitable for MW grades of high-power grid simulator topological structure |
| CN110266331A (en) * | 2019-06-24 | 2019-09-20 | 陕西飞机工业（集团）有限公司 | A kind of airborne antenna reception spectrum test filtering unit |
| CN110429590A (en) * | 2019-07-24 | 2019-11-08 | 合肥科威尔电源系统股份有限公司 | A kind of harmonic wave analog control method suitable for power grid analog power |
| CN114256845A (en) * | 2021-12-07 | 2022-03-29 | 阳光电源股份有限公司 | Power grid simulation device and high-frequency harmonic current control method thereof |
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2014
- 2014-09-25 CN CN201420555419.9U patent/CN204228843U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106487240A (en) * | 2015-08-28 | 2017-03-08 | 中国电力科学研究院 | A kind of grid simulator with accurate harmonic voltage and virtual impedance control |
| CN106487240B (en) * | 2015-08-28 | 2019-02-05 | 中国电力科学研究院 | A kind of grid simulator controlled with accurate harmonic voltage and virtual impedance |
| CN105763124A (en) * | 2016-03-16 | 2016-07-13 | 中国第汽车股份有限公司 | PMSM torque ripple controlling means and system |
| CN105763124B (en) * | 2016-03-16 | 2018-06-08 | 中国第一汽车股份有限公司 | Permanent magnet synchronous motor torque ripple control device and system |
| CN107196537B (en) * | 2017-06-05 | 2019-08-02 | 合肥工业大学 | Simulate the device and control method of synchronous generator characteristic and harmonic voltage generation |
| CN107196537A (en) * | 2017-06-05 | 2017-09-22 | 合肥工业大学 | Simulate device and control method that the harmonious wave voltage of synchronous generator characteristic occurs |
| CN107332231A (en) * | 2017-06-13 | 2017-11-07 | 合肥工业大学 | Suitable for MW grades of high-power grid simulator topological structure |
| CN107294095A (en) * | 2017-06-20 | 2017-10-24 | 合肥工业大学 | Occur the system and control method with ZIP virtual loads with harmonic voltage |
| CN107294095B (en) * | 2017-06-20 | 2019-09-10 | 合肥工业大学 | System and control method with harmonic voltage generation and ZIP virtual load |
| CN110266331A (en) * | 2019-06-24 | 2019-09-20 | 陕西飞机工业（集团）有限公司 | A kind of airborne antenna reception spectrum test filtering unit |
| CN110266331B (en) * | 2019-06-24 | 2021-09-14 | 陕西飞机工业（集团）有限公司 | Airborne antenna receiving spectrum test filtering assembly |
| CN110429590A (en) * | 2019-07-24 | 2019-11-08 | 合肥科威尔电源系统股份有限公司 | A kind of harmonic wave analog control method suitable for power grid analog power |
| CN110429590B (en) * | 2019-07-24 | 2022-12-27 | 科威尔技术股份有限公司 | Harmonic simulation control method suitable for power grid simulation power supply |
| CN114256845A (en) * | 2021-12-07 | 2022-03-29 | 阳光电源股份有限公司 | Power grid simulation device and high-frequency harmonic current control method thereof |
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