alexa Abstract | Modular Grid Connected Photovoltaic System with New Multilevel Inverter
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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In this paper, realizing an advanced grid connected PV generation system with high performance, by selecting a modular system configuration. Modular configuration consists of dc-dc converter modules and dc-ac inverter modules. And dc bus works as a current sharing information carrier between them. Parallel and redundant operation of inverter modules is realized without any communication link between them. Comparing with existing systems such as centralized, string, multi string and ac module structures, modular structure has excellent redundancy and scalability. Here applying a new inverter topology to this system. Different multilevel inverters are viewed for this purpose and Single Phase Nine Level Inverter has chosen as the suitable topology. Because of its flexibility in control and less no. of switches have been found as its main advantages. An advanced grid connected PV system consists of PV panel, boost converter, implementation of MPPT algorithm (P&O), Single phase nine level inverter, grid side control. Here applying a suitable current control strategy at grid side with grid synchronization. The objective of this paper is to get the reliable and stable output of modular grid connected photovoltaic generation system with single phase nine level inverter topology. And also a comparison has been done with single phase cascaded hybrid nine level multilevel inverter in this structure. It is obtained by doing modelling of this system using MATLAB software.

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Author(s): Arya Sasi , Jasmy Paul

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