Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters
The resonance problem of multi-paralleled grid-connected inverters with inductance-capacitance-inductance (LCL) filters is a core matter which bothers the safety and stability operation of new energy distribution networks. Based on the impedance model of the paralleled system of two inverters, the i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/9/1656 |
| _version_ | 1811299502065188864 |
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| author | Haijun Tao Yousong Zhou Guopeng Zhang Zheng Zheng |
| author_facet | Haijun Tao Yousong Zhou Guopeng Zhang Zheng Zheng |
| author_sort | Haijun Tao |
| collection | DOAJ |
| description | The resonance problem of multi-paralleled grid-connected inverters with inductance-capacitance-inductance (LCL) filters is a core matter which bothers the safety and stability operation of new energy distribution networks. Based on the impedance model of the paralleled system of two inverters, the influence of inverters on grid-connected current was analyzed through the superposition principle, and the grid-connected current was decomposed. The resonant mechanism generated by interactive current and the common current was studied, and the resonance frequency characteristics were compared and analyzed by a paralleled system using the same and differently rated power inverters. Based on the resonance frequency generated by interactive current, a digital notch filter was introduced into the traditional capacitance current active damping control scheme, which realized the non-static control of base wave signal and satisfied the standard of multi-paralleled grid-connected inverters with LCL filters. Finally, simulation results verified the correctness and validity of the proposed strategy. |
| first_indexed | 2024-04-13T06:36:47Z |
| format | Article |
| id | doaj.art-aa8880e68eeb404dae820c9e49aaa3f4 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:36:47Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-aa8880e68eeb404dae820c9e49aaa3f42022-12-22T02:57:54ZengMDPI AGEnergies1996-10732019-04-01129165610.3390/en12091656en12091656Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected InvertersHaijun Tao0Yousong Zhou1Guopeng Zhang2Zheng Zheng3School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, ChinaSchool of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, ChinaThe resonance problem of multi-paralleled grid-connected inverters with inductance-capacitance-inductance (LCL) filters is a core matter which bothers the safety and stability operation of new energy distribution networks. Based on the impedance model of the paralleled system of two inverters, the influence of inverters on grid-connected current was analyzed through the superposition principle, and the grid-connected current was decomposed. The resonant mechanism generated by interactive current and the common current was studied, and the resonance frequency characteristics were compared and analyzed by a paralleled system using the same and differently rated power inverters. Based on the resonance frequency generated by interactive current, a digital notch filter was introduced into the traditional capacitance current active damping control scheme, which realized the non-static control of base wave signal and satisfied the standard of multi-paralleled grid-connected inverters with LCL filters. Finally, simulation results verified the correctness and validity of the proposed strategy.https://www.mdpi.com/1996-1073/12/9/1656multi-paralleled invertersdifferent rated powerdigital notch filterresonance interaction |
| spellingShingle | Haijun Tao Yousong Zhou Guopeng Zhang Zheng Zheng Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters Energies multi-paralleled inverters different rated power digital notch filter resonance interaction |
| title | Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters |
| title_full | Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters |
| title_fullStr | Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters |
| title_full_unstemmed | Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters |
| title_short | Parallel Resonance Mechanism Analysis and Suppression of Inductance-Capacitance-Inductance Grid-Connected Inverters |
| title_sort | parallel resonance mechanism analysis and suppression of inductance capacitance inductance grid connected inverters |
| topic | multi-paralleled inverters different rated power digital notch filter resonance interaction |
| url | https://www.mdpi.com/1996-1073/12/9/1656 |
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