Design of output LCL filter and control of single-phase inverter for grid-connected system

2017 ◽  
Vol 99 (4) ◽  
pp. 1217-1232 ◽  
Author(s):  
Jozef Sedo ◽  
Slavomir Kascak
2013 ◽  
Vol 291-294 ◽  
pp. 2464-2469
Author(s):  
Dian Li Hou ◽  
Qing Fan Zhang ◽  
Xiao Liu

Because of the powerful filtering ability the third-order LCL filters has been widely used in grid-connected inverters, but there are some problems to be solved on systems stability and control accuracy. A separated-PID control strategy has been proposed according to the PID characteristics and the structural features of a single-phase inverter connected to the grid with a LCL filter. This control strategy has some advantages as a strong dynamic tacking stability, and the system output has a small steady state error. A detailed description is presented on this control strategy applied in the single-phase grid inverter with a LCL filter. According to the Routh-Hurwitz stability criterion, the stability of a grid-connected inverter system based on the proposed control strategy has been analyzed. Finally, waveforms of this inverter have been presented through a simulation to show the steady and dynamic performance of the proposed scheme.


2017 ◽  
Vol 32 (11) ◽  
pp. 8593-8605 ◽  
Author(s):  
Hussain A. Attia ◽  
Tan Kheng Suan Freddy ◽  
Hang Seng Che ◽  
Wooi Ping Hew ◽  
Ahmad H. El Khateb

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