Implementation of a MPPT Controller Based on AVR Mega16 for Photovoltaic Systems

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• 作者：Yu Yongchang ; Yao Chuanan
• 关键词：Maximum power point tracking (MPPT) ; photovoltaic power systems ; Mega16 microcontroller ; IncCond method
• 刊名：Energy Procedia
• 出版年：2012
• 期刊代码：P136_18766102
• 类别：pw
• 出版时间：2012
• 卷：17
• 期：part_PA
• 页码：241-248
• 文件大小：572 K

摘要

The output power of photovoltaic(PV) array depends on solar irradiation levels and ambient temperature. To make full utilization of PV array output power, this paper develops a controller based on AVR Mega16 microcontroller in a PV power system. The controller is used to implement the proposed incremental conductance(IncCond) maximum power point tracking (MPPT) algorithm, which gives a pulse width modulation (PWM) to drive the boost DC/DC converter in the photovoltaic system, and force the photovoltaic module to operate at the maximum power point. The obtained simulation results demonstrate the performance of the proposed MPP-controller.