最大化太陽能組件的輸出

　　最大化太陽能組件的輸出

　　監(jiān)測(cè)是打開太陽能電池能量生產(chǎn)的關(guān)鍵。當(dāng)太陽能環(huán)境在不斷變化時(shí)，利用恒定的能量產(chǎn)生的電路結(jié)構(gòu)，很容易降低效率。

　　作為太陽能模塊升溫或接收更多的光的電流-電壓特性的變化可能是太陽能電池陣列效率損失的一個(gè)重要來源。如果產(chǎn)生并網(wǎng)兼容的逆變器不適應(yīng)輸出電壓和電流條件，它將浪費(fèi)更多的電。作為回應(yīng)，電子公司已經(jīng)生產(chǎn)出用于優(yōu)化能量轉(zhuǎn)換和旁路電子設(shè)備所需的最大功率點(diǎn)跟蹤（MPPT）芯片，以防止臨時(shí)非生產(chǎn)模塊破壞活性電池的輸出。

　　在晴朗的日子接近赤道時(shí)，來自太陽的能量意味著地球表面的一平方米能接收超過1千瓦的電力。今天的太陽能電池使這種能量的絕大部分轉(zhuǎn)化為電能。在實(shí)驗(yàn)室條件下測(cè)試的硅基太陽能電池的轉(zhuǎn)換效率接近25%。然而，這些電池還沒有投入生產(chǎn)光伏（PV）面板，即使他們這樣做，還有其他問題，降低了總光伏系統(tǒng)的效率。

　　The electronic controls behind the solar cells provide the key to leveraging the raw efficiency of the solar cell. The control systems need to be able to react to changing weather conditions to ensure that the PV cells and modules operate as close to their peak as possible. Each solar cell has a characteristic current-voltage （IV） curve that reflects its response to both temperature and incident-light levels.

　　The cells packed into a photovoltaic module might generate a high voltage but very-low current on a drab winter day. As light levels rise the voltage will drop slightly， but current will increase dramatically until it approaches its peak level. As the module heats up， the output voltage of the module will fall， reducing its overall energy output. As a result， even during periods of intense sunlight when they should be at peak efficiency， PV panels can suffer from significant drops in conversion efficiency if the electronic circuitry does not compensate for this.