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光伏并網(wǎng)逆變器在太陽能供電系統(tǒng)中有什么作用

2017-09-131711

光伏并網(wǎng)逆變器在太陽能供電系統(tǒng)中的作用是什么?

逆變器是改變電流形態(tài)的一種裝置,主要功能是將太陽電池方陣輸出來的直流電轉(zhuǎn)變?yōu)榻涣麟?。逆變器裝置的核心是逆變開關(guān)電路,簡稱為 逆變電路。逆變電路是通過電力電子開關(guān)的導(dǎo)通與關(guān)斷,來完成逆變的功能。

調(diào)節(jié)控制器在太陽能供電系統(tǒng)中的作用是什么?

調(diào)節(jié)控制器是太陽電池電源系統(tǒng)中的控制裝置,主要功能是控制蓄電池充電過時和對負載放電過時保護蓄電池.控制負載線路短路,保護太  陽光伏發(fā)電系統(tǒng)裝置。

逆變器中什么叫做光伏效應(yīng)?

光伏效應(yīng)是指當物體受到光照時.物體內(nèi)的電荷分布狀態(tài)發(fā)生變化而產(chǎn)生電動勢及電流效應(yīng).這時,不需要外加電源.只要有光線照射,它們即可產(chǎn)生電動勢,接上負荷后就有電流.和電池一樣,所以又把這類光電元件稱為“光電池”。光伏效應(yīng)可以分為3種:金屬半導(dǎo)體接觸,P-N結(jié)接觸和丹伯效應(yīng)。

P-N結(jié)接觸技術(shù)成熟,發(fā)展較快,光電轉(zhuǎn)換效率高,太陽電池以此類為主。



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