Modular Multilevel Inverter with Maximum Power Point Tracking for Grid Connected Photovoltaic Application

作     者：Bader Naser Alajmi Khaled Hani Ahmed Grain Philip Adam Stephen Jon Finney Barry WayneWilliams 

作者机构：Department of Electronic and Electrical Engineering Strathclyde University Glasgow G1 1XW UK School of Engineering University of Aberdeen Aberdeen AB24 3UE UK 

出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)

年 卷 期：2012年第6卷第10期

页      面：1680-1687页

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Photovoltaic boost converter multilevel inverter maximum power point tracker. 

摘      要：A single-phase modular multilevel inverter based photovoltaic system for grid connection is proposed. This photovoltaic system utilizes two conversion stages： a boost converter for tracking the maximum power point and a modular multilevel inverter used as an interfacing unit. The maximum power point tracking is achieved with a fuzzy logic controller, and the modular multilevel inverter regulates the DC link voltage and synchronizes the grid voltage and current in order to achieve unity power factor operation. The proposed system provides high dynamic performance and power quality injected into the grid. The validity of the proposed system is confirmed by simulations.