Modeling and control of photovoltaic energy conversion connected to the grid  

作　　者：Rebei NAJET Ben Ghanem BELGACEM Hasnaoui OTHMAN 

机构地区：[1]Unit of Research(RME),INSAT,Tunisia [2]Centre Urbain Nord,BP 676,1080 Tunis Cedex,Tunisia

出　　处：《Frontiers in Energy》2012年第1期35-46,共12页能源前沿（英文版）

摘　　要：This paper presents modeling and control of a photovoltaie generator （PVG） connected to the grid. The parameters of the PVG have been identified in previous work （series and parallel resistance, reverse saturation current and thermal voltage） using Newton-Raphston and the gradient algorithm. The electrical energy from a PVG is transferred to the grid via two static converters （DC/DC and DC/AC）. The objective of the proposed control strategy is to maximize energy captured from the PVG. The adapted control law for extracting maximum power from the PVG is based on the incremental conductance algorithm. The developed algorithm has the capability of searching the maximum photovoltaic power under variable irradiation and temperature. To control the DC/AC inverter, an intelligent system based on two structures is constructed： a current source control structure and a voltage source control structure. The system has been validated by numerical simulation using data obtained from the PVG installed in the laboratory research （INSAT, Tunisia）.This paper presents modeling and control of a photovoltaie generator （PVG） connected to the grid. The parameters of the PVG have been identified in previous work （series and parallel resistance, reverse saturation current and thermal voltage） using Newton-Raphston and the gradient algorithm. The electrical energy from a PVG is transferred to the grid via two static converters （DC/DC and DC/AC）. The objective of the proposed control strategy is to maximize energy captured from the PVG. The adapted control law for extracting maximum power from the PVG is based on the incremental conductance algorithm. The developed algorithm has the capability of searching the maximum photovoltaic power under variable irradiation and temperature. To control the DC/AC inverter, an intelligent system based on two structures is constructed： a current source control structure and a voltage source control structure. The system has been validated by numerical simulation using data obtained from the PVG installed in the laboratory research （INSAT, Tunisia）.

关 键 词：photovoltaic generator （PVG） maximum power point tracker GRID-CONNECTED static converters 

分 类 号：TM619[电气工程—电力系统及自动化] TU113.66[建筑科学—建筑理论]