电源技术Issue(12)：2399-2401,2404,4.
改进电导增量法在光伏并网系统中的应用
Application of improved increment conductance method in photovoltaic grid-connected system
摘要
Abstract
In order to effectively use solar energy resources, it is necessary for photovoltaic grid-connected system to track the maximum output power point of the photovoltaic array. Through analysis and comparison of the existing MPPT algorithm, a variable step size incremental conductance algorithm combining with constant voltage tracking method was proposed. The results of Matlab simulation show that the maximum power point tracking can be quickly achieved and the mutation of light intensity can be adopted by the former level boost circuit with the improved algorithm. Double closed loop control was adopted by after-level inverter circuit. The grid voltage changed and the frequency were fast and accurately tracked, and the inverter output current was phased. The grid and voltage were kept the same of those. The output current is close to the sine wave and with less ripples. This simulation proves that the PV grid-connected system is feasible in practice.关键词
最大功率点跟踪/电导增量/变步长/光伏并网系统/双闭环控制Key words
maximum power point tracking/incremental conductance method/variable step/photovoltaic grid-connected system/double closed loop control分类
信息技术与安全科学引用本文复制引用
王勉华,魏民,李春鹏..改进电导增量法在光伏并网系统中的应用[J].电源技术,2014,(12):2399-2401,2404,4.基金项目
国家自然科学基金资助项目(51307137) （51307137）
