Study On Aquaculture System Based On Photovoltaic Power Generation

In the context of people's rapid increase in energy demand, and the growing shortage of traditional energy,the development and utilization of renewable energy sources such as solar power energy has been more and more attentio. Governments around the world have put the full development and utilization of solar energy as the energy strategy of sustainable development, including photovoltaic power generation is the most notable. As an important part of the new energy, solar photovoltaic power generation is considered to be the most promising new energy technology in the world. Developed countries have invested heavily to the research and development, and actively promote the industrialization process,vigorously develop the application of photovoltaic power generation market.Solar power energy without regional restrictions, widely available, but the low efficiency of photovoltaic power generation system is a large-scale promotion of photovoltaic bottleneck,So how to maximize the use of energy is produced by photovoltaic array key points.Although application in photovoltaic energy exploration in our country also have small achievements, compared with abroad there is still a large gap.Aquaculture has been record since ancient times in China.And the scale of aquaculture is growing so fast in recent decades that it has been one of the pillar industry in China agricultural productioa But in the aspect of water quality detection and electricity supply,there is still has a ot of loopholes in our country, the shortage of traditional energy sources,some water quality parameters such as temperature, dissolved oxygen, PH value, can't get in time. According to the two aspects of the problem, this paper puts forward astudy based on photovoltaic power generation system of aquaculture which using the solar cells for aquaculture aerator power supply.This study made a detailed introduction and research in the aspect of photovoltaic power generation system of DC - DC transform circuit, the maximum power point tracking methods, the choice of storage battery, the choice of the ways of charging, a new maximum power point tracking method is proposed, the choice of main chip design, selection of hardware and software design, the parameters of the transmission way.At first, this paper analyzes the research situation of photovoltaic power generation at home and abroad, and made a detailed analysis of the description of the characteristics of photovoltaic power generation system.The Boost circuit is chosen as the conversion circuit,by comparing the commonly used DC-DC conversion circuit. Made a carefully analyzes of several classical methods based on the maximum power tracking methods, through the analysis, there is a adaptive perturbation method of the duty ratio has been proposed to pv array maximum power point tracking.In this paper, lead-acid battery is chosen as the final battery, according to the principle and characteristics of battery charge and discharge.In order to guarantee the life of the battery, through to the lead-acid battery charge and discharge requirements and its basic characteristics,design of battery charging ways for three-stage charging mode.In the aquaculture, this paper proposes to water quality parameters as the research object, USES the STM32 series chips as the main control chip, and ZigBee as a transport mode,the sensor collected at the end of the signal transmission to the main control chip,and real-time rendering on the LCD screen, according to the Comparison result of security parameters set by the system and the real-time data, achieved the aim of aerator switch control, the STM32 chipwe have selected , has transplanted ?COS -? operating system,but the operating system does not support graphical display, therefore applied in the system the graphical interface ?CGUI.According to the design of hardware implement circuit connection, The system can display real-time water quality parameters, and timely adjust the control object as the Hardware circuit connection in this experiment .In this design, the system can achieve the goal of automatic control.Compared with the traditional way of energy supply and cultivation mode, the system can more accurately detect multi-point water quality, and ensure the higher survival rate and quality, at the same time, the choice of the ways of new energy power supply,saved the costs and increased the income of the fishermen, also provide data for future aquaculture research reference.