Research And Implementation Of Parallel Type MPPT Technology

In today’s increasingly tense world’s resources, non-renewable resource extractionand utilization has been unable to meet people’s needs, and consumption of traditionalenergy sources are not polluted environmental shortcomings, the deteriorating globalenvironment can not do today, people must be development of new energy sources toreplace non-renewable energy sources over the past. Currently the world focuses on thedevelopment of solar energy as a new energy increasing attention, and with thecontinuous progress of science and technology, solar photovoltaic technology isdeveloping more and more mature, and has been widely used in various industrial fields.However, the solar PV system still exists a series of constraints on their continueddevelopment issues, such as the conversion efficiency is still relatively low in general,the higher construction cost, energy storage time is short and so on. Many domestic andforeign literature needle kind of problem a lot of research and analysis, especially in theconversion efficiency has been greatly improved in recent years. Therefore, it isproposed to realize solar photovoltaic maximum power point tracking method, the useof solar photovoltaic cells and the load between the maximum power point trackingcontroller added to improve the energy conversion efficiency to solve the problem, inorder to make full use of solar energy clean, can be recycled, stable resources.In this paper, a detailed analysis of several solar photovoltaic maximum power pointtracking (MPPT) algorithm starting from the working principle and operatingcharacteristics of the departure of these algorithms were controlled studies analyzed,and on this basis, an improved hill climbing algorithm This algorithm has the controlcircuit is simple, easy operation, high stability, low cost advantage, and can effectivelyreduce the normal hill climbing due to oscillate around the point of maximum powergenerated by operation of the power loss, and the ability to prevent the occurrence of thetracking process tracking direction misjudged the situation, in order to achieve themaximum power point of a fast and accurate tracking. In this study, based on the play ofinnovative, self-study design, high reliability, stability, efficiency, efficient automaticcontrol system. This system is built around the main circuit Buck buck circuitconstructed using MCU control, and then realize complete solar voltage and currentdata acquisition and processing and other sectors, through research and analysis to calculate the maximum power point, and then put these points were further analysis andcomparison, in order to meet the power switch on the precise control requirements. Thisarticle also describes in detail the solar photovoltaic maximum power point trackingcontrol system software design and hardware design method step, the theoretical basisfor the design process, the final analysis of the experimental data for testing,experimental results show that the improved method can make solar photovoltaicbattery output power is increased significantly, up to about8%, which can show thatsuch a system to meet the desired objectives to achieve its required performance,operability is very strong, has a very broad application prospects and good economicvalue.