| As the new energy resource technology coming nearer and nearer to our lives,among them solar energy draws more and more attention. There are many ways tomake use of solar energy and the photography voltage based on silicon battery isbecoming more and more popular. The rate of silicon battery transform solar energyto electric energy is influenced by many factors, include the silicon battery itself andthe climate change such as the strength of sunshine, the temperature of battery and thevoltage of the load.The article analyse the character of photographic battery, then put forward twomethods under two different conditions. At first we introduce the battery, for it is verydifferent from other electric source. it has its typical characters. We made a deeplyanalysis and study the classic method of P&O. By compare the advantages anddisadvantages we find the shortcomings that we can improve it. So based on theanalysis the article put forward a new method: a method of variable-step based on thedetection of battery state. By simulation proves this method is more rapid and steadythan P&O. It increase the rate of power generation7%.Second, the article introducethe photovoltaic array, find that when the sunshine is uneven, the power output ofbattery behaves a very different behavior that it has many peaks of power and theclassic method can not work, so we introduce a new method of PSO to resolve thisproblem。By simulation, the method of PSO can tracks the most power point ofphotovoltaic rapidly and the compared with the theoretical value of most power point,the deviation is less than2%. |
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