文章基本信息

标题：Convergence of pv system with Buck-Boost Converter using MPPT Techniques
本地全文：下载
作者：Lipika Nanda ; Sushree Sibani Das
期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2013
卷号：2
期号：11
页码：3169-3171
出版社：IJECS
摘要：Energy , especially alternative source of energy is vital for the development of a country. In future, the worldanticipates to develop more of its solar resource potential as an alternative energy source to overcome the persistent shortagesand unreliability of power supply. In order to maximize the power output the system components of the photovoltaic systemshould be optimized. For the optimization maximum power point tracking (MPPT) is a promising technique that grid tieinverters , solar battery chargers and similar devices use to get the maximum possible power from one or more solar panels.Among the different methods used to track the maximum power point, Perturb and Observe method is a type of strategy tooptimize the power output of an array. In this method, the controller adjusts the voltage by a small amount from the array andmeasures power, if the power increases, further adjustments in that direction are tried until power no longer increases. In thisresearch paper the system performance is optimized by perturb and observe method using buck boost converter. By varying theduty cycle of the buck boost converter, the source impedance can be matched to adjust the load impedance to improve theefficiency of the system. The Performance has been studied by the MATLAB/Simulink. A solar module can’t transfer maximumpower to the load itself due to impedance mismatch. A maximum power point tracking (MPPT) system could be employed to have themaximum power. A new MPPT system has been developed using Buck-Boost type DC-DC converter. The system is highly efficient androbust. PIC16F73 microcontroller has been used to control the DC-DC converter output. PV module output power is measured usingmicrocontroller. The output power is compared with the previous module output power and the duty cycle of the converter is adjustedcontinuously to track MPP. This process repeats until the output power reaches near to the maximum power point. In this paper, amaximum power point tracking (MPPT) system is developed using two-switch non-inverting buck-boost converter. Perturb and observe (P& O) MPPT algorithm is used to transfer maximum power from the PV panel which is executed using a microcontroller
关键词：Maximum power point tracking; Photovoltaic system; Buck boost converter; Matlab