Proceedings Article10.1109/YAC.2018.8406464
Current multi-loop control strategy for grid-connected inverter with LCL filter
Cheng Gao,Qihong Chen,Liyan Zhang,Shuhai Quan +3 more
- 18 May 2018
- pp 712-716
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TL;DR: Theoretical analysis and experimental results show that LCL type grid connected inverter with this method has the advantages of high accuracy, good dynamic performance and strong anti-interference ability.
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Abstract: A new multi current loop control strategy for LCL grid connected inverter is proposed. Repetitive PI double loop strategy which uses the feedback form of grid side current, utilizes PI control to improve the dynamic performance of the system, Then, repetitive control outer loop is used to achieve the high-performance control of the grid current, suppress voltage fluctuation and nonlinear load effect on the grid current and track the baseband signal without static error control. And the capacitor current feedback LCL inverter system aims at suppressing the high frequency resonance of LCL output filter; Theoretical analysis and experimental results show that LCL type grid connected inverter with this method has the advantages of high accuracy, good dynamic performance and strong anti-interference ability.
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References
Dual-loop Grid Current Control Technique for Grid-connected Inverter Using An LCL Filter
Xie Shao-jun
- 01 Jan 2009
TL;DR: Simulation and experiment results proved that the dual-loop current control strategy for grid-connected inverter with LCL filter is feasible, the resonance of grid current is avoided and high in-grid power factor is achieved.
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A Single-loop Current Control Method for LCL-filtered Grid-connected Inverters Based on the Repetitive Controller
Lu Yong
- 01 Jan 2013
TL;DR: In this article, a single-loop current control based on the repetitive controller was proposed to suppress the disturbances from grid, which can improve the quality of injected current, but a multi-loop structure with the extra sensors is usually needed to ensure the system stability.
9
•Journal Article
Split-Capacitor Passive Damping Control for LCL Grid-Connected Inverter
TL;DR: In this article, a split-capacitor passive damping scheme is proposed, where the capacitor branch of LCL filter is equally divided into two parts and the damping resistance is only connected to one of the two parts.
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