Study Of Photovoltaic Solar Cell Maximum Power Point Tracking Technology Research

With photovoltaic technology becomes more mature, the use of more and more low cost, countries have to strengthen the development of new energy sources. Therefore, this study MPPT controller has great value.The Maximum Power Point Tracking technology (MPPT) technology is practical and has a strong development prospects in the solar PV power control technology implementations. MPPT solar controller as a key part of the system, its performance has a direct impact on the photovoltaic efficiency.Firstly, the article introduces the history and current development of photovoltaic industry, analyzes the characteristics of the solar cell, summed it as light intensity, temperature change of the dynamic nature of a regular. Thus found a way to make it work at the maximum power point of the algorithm. Then discuss the implementation of MPPT controller hardware circuit (BUCK circuit, BOOST circuit, BUCK-BOOST circuit). This article uses a general structure BUCK circuit.This article MPPT controller switch is mainly used Mitsubishi IPM module with high input impedance, high switching frequency, withstand big current advantages and so on. Its control chip using high-performance DSP made by Microchip production company. Innovative maximum power point tracking technology can significantly improve the energy efficiency of solar systems, battery charging process controller is optimized, can extend battery life and improve system performance.MPPT controller of this article is a new generation of products using DSP control, RS-232/485standard communication interface, using the method of modular design. Its optimized control algorithm improves the dynamic response of the system output can fast-track the maximum power point of solar panels. Has great practical value i engineering.