Intelligent Control For Maximum Generating Capacity Of PV Power Generation System

With the development of human society, the economic growth of energy demand increases gradually, and conventional energy(coal, oil, gas and other non-renewable resources) of the storage capacity is less and less, so, no pollution, sustainable development of new energy is imminent. In recent years, in the development and utilization of new energy and renewable resources, the development and utilization of solar energy is especially remarkable. Solar energy is a kind of renewable clean energy, unlimited, its use will bring human society into a true sense of the era of energy conservation and emissions reduction, will also become an integral part of the clean energy structure. Photovoltaic power generation system is a key way for the future for the development of photovoltaic industry, but relative to the traditional energy, high cost, low efficiency of photovoltaic power generation system is also a big disadvantage. Therefore, reduce the cost of investment, improve the system capacity, the development of intelligent photovoltaic(pv) is a focus in the study of this subject.First analyzes the status quo at home and abroad, photovoltaic pv power generation system are introduced and the maximum power point tracking, and the main research contents and innovation points made simple introduction. At the same time, the photovoltaic power generation system is the basic unit of photovoltaic cells has carried on the detailed analysis and introduction.Then detailed introduces the composition and classification of photovoltaic power generation system, and through the Pvsyst software algorithm made the simulation calculation of system capacity.Third, photovoltaic power generation systems work on the maximum power point is the main strategy, increase the system capacity through the introduction of maximum power point of system and the concept of maximum power point tracking, respectively, to the traditional strategy of maximum power point tracking and intelligent control of maximum power point tracking strategy has carried on the comparative analysis, concluded that the fuzzy control method of maximum power point tracking system with high precision, the system response speed, the increase of electricity have a positive impact on the system.Fourth, the paper introduces the manual regulation tracking system, single axis tracking system, the two-axis tracking system and automatic tracking system, through the Pvsyst software simulation analysis was carried out on the different types of tracking system, the output increased, construction cost, applicable area and so on system for comprehensive comparison with the fixed Angle, draw a two-axis tracking system capacity increase was most pronounced, and adjustable tracking system cost relatively modest.Finally, combining with the theory of the previous chapters, the engineering example Zhang Bei has carried on the comprehensive design of 200 mw photovoltaic power station, using the group list type inverter multiplex MPPT single MPPT tracing and tracking, and centralized inverter manual adjustable tracking system to the way of combining the system can output maximum power.