外文翻譯--太陽(yáng)能發(fā)電技術(shù)——光伏發(fā)電系統(tǒng)控制器-閱讀頁(yè)
2025-01-30 02:20本頁(yè)面
【正文】 器的電路 系 統(tǒng)監(jiān)控蓄電池電壓，當(dāng)達(dá)到標(biāo)志著蓄電池充滿的予置電平時(shí)過(guò)充電流將被功率晶體管旁路到電阻器，將多余的額外功率轉(zhuǎn)變?yōu)闊?。旁路控制器也可與二極管結(jié)合，以防止夜間電流從蓄電池流回方陣。旁路控制器設(shè)計(jì)簡(jiǎn)單。分流控制的缺點(diǎn)是，有限的負(fù)載操作能力和有通風(fēng)要求 2．2 串聯(lián)控 制 器 當(dāng)蓄電池電壓達(dá)到被稱為充電終止點(diǎn)的予置電壓值時(shí)，串聯(lián)控制器通過(guò)開(kāi)關(guān)切斷電流 ，防止蓄電池過(guò)充。合成一體的內(nèi)置定時(shí)器，在充電過(guò)程終Lr至蓄電池組放電終止期間．進(jìn)行恒壓充電循環(huán)。由于不需要發(fā)散熱最，串聯(lián)控制器不安裝散熱器 體積小價(jià)格便宜的串聯(lián)控制器，較“旁路控制器”具有更大的負(fù)載操作能力 ，通常也不要求特殊的通風(fēng)。當(dāng)蓄電池處于未充滿狀態(tài)時(shí) ，允許方陣電流全部流進(jìn)蓄電池。當(dāng)蓄電池組漫漫接近完全充滿時(shí) ，“涓流”充電漸漸停止。多階控制器需耍適 當(dāng)?shù)耐L(fēng) ．通常這種控制器設(shè)一個(gè)繼電器開(kāi)關(guān) ，防止夜 的“反向泄漏”。開(kāi)始充電時(shí)脈沖控制器以寬脈沖充電，隨著充電電壓的上升 ，充電脈沖寬度逐漸變窄，平均充電電流減小。脈沖控制器充電方法合理，效率高。如果不注意 ，光伏系統(tǒng)的負(fù)載能夠輕易地耗盡蓄電池的電 能?？刂破鞣乐剐铍姵剡^(guò)放電的措施有： (1)在達(dá)到予置的待充電電平時(shí) ，斷開(kāi)負(fù)載。 (3)自動(dòng)接通一個(gè)后備電源。當(dāng)蓄電池 被充滿后 ，控制器斷開(kāi)后備 電源 ，光伏系統(tǒng)重新開(kāi)始它的蓄電 池充電運(yùn)行。 (1)溫度補(bǔ)償：依據(jù)環(huán)境溫度調(diào)整蓄電池充電電流。 (3)低電壓報(bào)警器：當(dāng)蓄電池荷電狀態(tài)低于予置電平時(shí)，可 聽(tīng)到警告聲響。(5)電壓指示器：模擬或數(shù)字方式顯示蓄電池電壓 ，指示蓄 電池的荷電狀態(tài)。 (7)安培小時(shí)計(jì) ：數(shù)字 示蓄電池已放電量或剩余電量。 (9)方陣功率分流調(diào)節(jié)器：將多余的方陣充電功率旁路到 非重要負(fù)載 ，例如電熱水器等。 (11)負(fù)載記時(shí)器 ：定時(shí)負(fù)載用的記時(shí)鐘 ，用于需要予置運(yùn) 行時(shí)間的負(fù)載，例如安全警戒照明燈等。(13)自動(dòng)均衡充電：定期 自動(dòng)對(duì)蓄電池進(jìn)行均恒充電。SeetanahJ 1 solar charging and discharging controller status quo solar photovoltaic power generationSolar energy as a new energy has a huge advantage, so all countries in the world in efforts to develop new technology to obtain more mature is solar photovoltaic power generation technology. Solar photovoltaic power generation has bee an important part of the new energy and renewable energy, is also considered the current of the world39。t time, so it is easy to occur over discharge of battery, will lead to the depth of the battery discharge, seriously affect its life.So, how to improve the solar charge controller to charge and discharge, development of excellent performance of charge and discharge controller, to improve the efficiency in the practical application, has bee an important research aspect.Two types of controllerThe basic function of the controller is similar to the voltage regulator, is mainly used to prevent the battery by solar electricity storagePool phalanx of charging and been load discharge. Control device mainly has four kinds: the bypass controller, serial controller, controller and multistage pulse controller. the bypass controllerBypass controller mainly use for small pv system. When the battery is full, through the bypass batteryTo prevent over charging. Bypass circuit system to monitor the battery voltage of the controller, when achieved marked the battery is full of in the electricity at ordinary times of charging flow will be power transistor bypass to the resistor, excess extra power into heat. Bypass the controller
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