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会员 LLCL-Filter Based Single-Phase Grid-Tied Aalborg Inverter
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  • 2014/01/01
摘要
The Aalborg Inverter is a new type of high efficient DC/AC grid-tied inverter, where the input DC voltage can vary in a wide range. Compared with the LCL-filter, the LLCL-filter can save the total inductance for the conventional voltage source inverter. In this paper, an LLCL-filter based Aalborg Inverter is proposed and its character is illustrated through the small signal analysis in both “Buck” and “Buck-Boost” mode. From the modeling, it can be seen that the resonant inductor in the capacitor loop has not brought extra control difficulties, whereas more inductance in the power loop can be saved. Simulation and experiments are carried out to verify the analysis and the design through an 220 V/50 Hz, 2000 W prototype.
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