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Research on Dual-Loop Control of Three-Phase Grid-Connected Inverter with LCL Filter Based on PCI Control

Xuhong Yang and Haoran Li
Shanghai Key Laboratory of Power Station Automation Technology, Shanghai University of Electric Power, Shanghai, 200090, China

Abstract—According to the defects of traditional PI control, the paper presents a new method which is Proportional Complex Integral (PCI) control to implement the control of three-phase grid-connected inverter with LCL filter. Conventional PI control has infinite gain in the two-phase rotating reference frame, but can not achieve the zero error tracking in the two-phase stationary reference frame, which is used in the system to eliminate coupling. However, the PCI control has infinite gain at fundamental frequency in the two phase stationary frame. Finally, the simulation result shows that the new method is correct and effective.

Index Terms—PCI control, conventional PI control, two-phase stationary frame

Cite: Xuhong Yang and Haoran Li, "Research on Dual-Loop Control of Three-Phase Grid-Connected Inverter with LCL Filter Based on PCI Control," International Journal of Electrical Energy, Vol. 3, No. 4, pp. 262-265, December 2015. doi: 10.18178/ijoee.3.4.262-265

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