【可(ke)調穩壓電源(yuan)】可(ke)調穩壓電源(yuan)原理 可(ke)調穩壓電源(yuan)的作用

可調穩壓電源原理

參數穩(wen)壓(ya)器(qi)在(zai)(zai)(zai)輸(shu)(shu)入交流電壓(ya)150V-260V時，輸(shu)(shu)出(chu)穩(wen)壓(ya)在(zai)(zai)(zai)220V效果(guo)效好(hao)。低于(yu)和高于(yu)這個范(fan)圍，其效率要下降。采用單(dan)片微機(ji)進行(xing)第一步控(kong)制，使(shi)310V以(yi)下和90V以(yi)上的輸(shu)(shu)入電壓(ya)，調整控(kong)制在(zai)(zai)(zai)190V—250V范(fan)圍，再用參數穩(wen)壓(ya)器(qi)進行(xing)穩(wen)壓(ya)效果(guo)很好(hao)。

由市電(dian)(dian)輸入(ru)的(de)交流電(dian)(dian)壓變化波(bo)動(dong)很大，經(jing)過(guo)過(guo)壓吸(xi)收濾(lv)波(bo)電(dian)(dian)路(lu)(lu)將高頻(pin)脈沖等(deng)干擾電(dian)(dian)壓濾(lv)去后(hou)，送入(ru)直流開關(guan)穩壓電(dian)(dian)源、交流取樣電(dian)(dian)路(lu)(lu)和(he)控制執行電(dian)(dian)路(lu)(lu)。

直流(liu)(liu)開關(guan)穩壓(ya)電(dian)(dian)(dian)源的(de)功(gong)率小，但能把(ba)60-320V的(de)交(jiao)流(liu)(liu)電(dian)(dian)(dian)壓(ya)孌換(huan)成+5V，+12V，-12V的(de)直流(liu)(liu)電(dian)(dian)(dian)壓(ya)。+5V電(dian)(dian)(dian)壓(ya)供(gong)給單片微(wei)機使用，±12V電(dian)(dian)(dian)壓(ya)供(gong)給控(kong)制(zhi)電(dian)(dian)(dian)路(lu)的(de)大功(gong)率開關(guan)模塊使用。

單片微機把(ba)取(qu)樣電路(lu)采集到的(de)輸入電壓數據(ju)，分(fen)析(xi)判(pan)斷(duan)并發出(chu)(chu)控制(zhi)(zhi)信號送到觸(chu)發電路(lu)，控制(zhi)(zhi)調節輸出(chu)(chu)電壓。

控(kong)制(zhi)執行電(dian)(dian)(dian)路由SSR過(guo)零開關(guan)大功率模(mo)塊和帶抽頭的自耦(ou)變壓(ya)器(qi)組成(cheng)。SSR之間采(cai)用RC吸收電(dian)(dian)(dian)路吸收過(guo)電(dian)(dian)(dian)壓(ya)和過(guo)電(dian)(dian)(dian)流，使(shi)SSR在開關(guan)時不會損壞。控(kong)制(zhi)執行電(dian)(dian)(dian)路把 90-310V的輸入電(dian)(dian)(dian)壓(ya)控(kong)制(zhi)在190V-240V范(fan)圍，再送到參數穩壓(ya)器(qi)進行精(jing)確(que)穩壓(ya)。

參數(shu)穩壓器(qi)由電(dian)(dian)(dian)感和電(dian)(dian)(dian)容組(zu)成LC振(zhen)(zhen)蕩(dang)器(qi)，振(zhen)(zhen)蕩(dang)頻(pin)率(lv)50HZ。無論市(shi)電(dian)(dian)(dian)怎么變(bian)化(hua)，其振(zhen)(zhen)蕩(dang)頻(pin)率(lv)不會改變(bian)，因此(ci)輸出電(dian)(dian)(dian)壓不會變(bian)化(hua)，穩壓精(jing)度高。即(ji)使輸入(ru)電(dian)(dian)(dian)壓波形(xing)失(shi)真很大，經參數(shu)穩壓器(qi)振(zhen)(zhen)蕩(dang)輸出后卻是標準的正弦波，因此(ci)穩壓電(dian)(dian)(dian)源有強的抗(kang)干擾能力和凈(jing)化(hua)能力。

保(bao)護告(gao)警(jing)電路：當有危害設備安(an)全(quan)情(qing)況時(shi)，只發出(chu)聲光告(gao)警(jing)，提示操作人員注意采取(qu)措施，而不(bu)用(yong)切斷輸(shu)(shu)(shu)出(chu)電壓。在無輸(shu)(shu)(shu)出(chu)電壓，控制箱的溫度過(guo)高，市(shi)電輸(shu)(shu)(shu)入(ru)高過(guo)300V，市(shi)電輸(shu)(shu)(shu)入(ru)低于(yu)130V時(shi)都會聲光告(gao)警(jing)。當輸(shu)(shu)(shu)入(ru)電流(liu)過(guo)大時(shi)，輸(shu)(shu)(shu)入(ru)(輸(shu)(shu)(shu)出(chu))空氣自動(dong)開(kai)關自動(dong)跳開(kai)。

可調穩壓電源的作用

1、輸(shu)出范(fan)(fan)圍(wei)：輸(shu)出電壓(ya)0—1000V、輸(shu)出電流0—500A，輸(shu)出功(gong)率≤10KW，在(zai)此范(fan)(fan)圍(wei)內的(de)任意電壓(ya)、任意電流均可選擇(ze)

2、穩(wen)(wen)壓穩(wen)(wen)流：電壓電流值從零(ling)至額定(ding)值連續可調，穩(wen)(wen)壓穩(wen)(wen)流自動(dong)轉換(huan)

3、短路(lu)(lu)保護：允許(xu)在任何工(gong)作狀態(tai)下(xia)短路(lu)(lu)或短路(lu)(lu)開機(ji)，當輸出短路(lu)(lu)時，電源(yuan)聲光報(bao)警，短路(lu)(lu)解除時，恢復正常工(gong)作

4、過流(liu)保護：電(dian)流(liu)保護值(zhi)(zhi)在額(e)定(ding)值(zhi)(zhi)范圍內連續可調，輸出(chu)電(dian)流(liu)超過設定(ding)值(zhi)(zhi)時電(dian)源會發出(chu)聲光報警

5、過(guo)壓(ya)保護(hu)：電(dian)壓(ya)保護(hu)值(zhi)在額定值(zhi)范(fan)圍內連(lian)續可調(diao)，直流穩(wen)壓(ya)穩(wen)流電(dian)源輸出(chu)電(dian)壓(ya)超過(guo)電(dian)壓(ya)保護(hu)值(zhi)時會發出(chu)聲光報警，同時關斷(duan)輸出(chu)

6、放電功能：供(gong)容性負(fu)載關機放電用

7、輸出顯(xian)示：LED數碼管顯(xian)示,精確顯(xian)示電流電壓值

8、脈沖(chong)工作：配(pei)時間控(kong)制器構成直流脈沖(chong)電源