一种新型光伏最大功率跟踪控制器的实现

Implementation of a novel MPPT Controller

在光伏系统中,由于光伏电池的光电转换效率太低,使其不能以最大效率转化为电能输出;另外,它在工作过程中受环境影响也很大。因此为了使其输出的电能达到最大化,除了要研制价格低廉并且能量转换效率高的光电材料外,可以通过采用最大功率跟踪(Maximum Power Point Tracking,简称MPPT)的控制方法来实现光伏电池的大功率输出。介绍了一种采用C8051F310单片机实现光伏MPPT控制器的简要设计。该控制器通过采用"电压扰动法"实现MPPT控制,通过实验结果说明该控制器达到了MPPT功能。

The low photoelecrtic conversion efficiency is a major drawback of photovoltaic cells in photovohaic systems,so that it can not be turned into the most efficient power output.Therefore,in order to maximize the output of electricity,in addition to develop the low-cost and high energy conversion efficiency of photovohaic materials,the photovohaic maximum power point tracking （MPPT） is used in photovoltaic cells control to realize the high power output.A simple controller design with MPPT based on MCU C8051F310 is introduced.The MPPT controller is achieved by ＂voltage disturbance＂ method, and the test results indicate that the controller has the MPPT function.