Pv Grid-connected Inverter Maximum Power Point Tracking And Its Implementation

As human society's growing demand for high energy, traditional energy pollution problem is getting worse in recent years the study of renewable energy has become the hot spots, including the development of solar energy is an important research direction.This paper is to address the problem with solar photovoltaic grid-connected inverter as the main object of study, introduced the photovoltaic grid-connected inverter operating principle. Focus on the MPPT study and the use of DSP/CPLD-based controller.The main results are as follows:1.Photovoltaic grid-connected inverter of the research background, the proposed performance indicators.2.System design and feasibility analysis.3.MPPT techniques. This article first analyzes the characteristics of solar cells and the current number of the more commonly used method of MPPT, and then introduced the MPPT in this article which based on Boost circuit.4.MPPT controller design and implementation. Introduced a controller sub-module of the software and hardware design, and introduces the DSP/BIOS operating system for embedded use, while analysis of the inverter control system, as well as the protection needs of the protection circuit based on CPLD design.5.Analysis of experimental results about MPPT in this paper.6.Necessary to improve the entire system or be able to expand the place.