作者(zhe): 發表時(shi)間:2018-11-25瀏覽量:1467【小中大】
交流變頻電(dian)源的原理與應用
變頻電源(yuan)系(xi)統(tong)原理
經過(guo)AC→DC→AC變(bian)換(huan)的(de)(de)(de)逆變(bian)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)稱為(wei)變(bian)頻(pin)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan),它有(you)(you)別于(yu)(yu)用(yong)于(yu)(yu)電(dian)(dian)(dian)(dian)機調(diao)速(su)用(yong)的(de)(de)(de)變(bian)頻(pin)調(diao)速(su)控制器,也有(you)(you)別于(yu)(yu)普通交(jiao)流(liu)穩(wen)壓(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)。變(bian)頻(pin)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)主要(yao)功用(yong)是(shi)將(jiang)現有(you)(you)交(jiao)流(liu)電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)變(bian)換(huan)成(cheng)所(suo)需頻(pin)率的(de)(de)(de)穩(wen)定的(de)(de)(de)純凈的(de)(de)(de)正弦波電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)。理想(xiang)的(de)(de)(de)交(jiao)流(liu)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)特點是(shi)頻(pin)率穩(wen)定、電(dian)(dian)(dian)(dian)壓(ya)穩(wen)定、內(nei)阻等于(yu)(yu)零、電(dian)(dian)(dian)(dian)壓(ya)波形為(wei)純正弦波(無失(shi)真(zhen))。變(bian)頻(pin)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)十分接近于(yu)(yu)理想(xiang)交(jiao)流(liu)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan),因此(ci),先(xian)進(jin)發達(da)國家越(yue)來越(yue)多地將(jiang)變(bian)頻(pin)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)用(yong)作標(biao)準供(gong)(gong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan),以便為(wei)用(yong)電(dian)(dian)(dian)(dian)器提供(gong)(gong)最(zui)優良的(de)(de)(de)供(gong)(gong)電(dian)(dian)(dian)(dian)環境,便于(yu)(yu)客觀考核用(yong)電(dian)(dian)(dian)(dian)器的(de)(de)(de)技術性能(neng)。 變頻電源主(zhu)要有二大(da)種類:線性放(fang)大(da)型和(he)PWM開關型
IG11000/IG33000系列變頻電(dian)源,以SPWM方式制作,用(yong)主動(dong)元件IGBT模塊設計(ji),采(cai)用(yong)了(le)數字分頻、D/A轉換、瞬時(shi)值(zhi)反饋、正弦脈寬調制等技術, 使單機容(rong)量可達1000kVA, 以隔離變壓器輸出來增加(jia)整機穩定性, 具(ju)(ju)有負載適應性強、輸出波形品質好、操作簡便、體(ti)(ti)積(ji)小(xiao)、重量輕等特點,具(ju)(ju)有短路、過流、過載、過熱等保護(hu)功能,以(yi)保證電源可靠運行。
變頻電源工作方塊圖
變頻電源應用目的及領域(yu)
由于世界各國電網指標不統(tong)一(yi),出口電器廠商需要電源模擬不同國家的電網狀況,為工程(cheng)師在設(she)計開發、生產線測(ce)試及品保的產品檢測(ce)、壽命、過高(gao)壓(ya)/低(di)壓模(mo)擬測試等應用中提供(gong)純(chun)凈可靠的(de)(de)(de)、低(di)諧波失真、高(gao)穩定(ding)的(de)(de)(de)頻(pin)率和穩壓率的(de)(de)(de)正弦波電(dian)力輸(shu)出;進(jin)口原裝(zhuang)電(dian)器、設(she)(she)備的(de)(de)(de)用戶也需(xu)要對我國電(dian)網進(jin)行(xing)變壓、變頻(pin)以保證進(jin)口電(dian)器、設(she)(she)備的(de)(de)(de)正常運轉;滿足航空電(dian)子及軍(jun)事設(she)(she)備高(gao)頻(pin)的(de)(de)(de)需(xu)求。
主要(yao)用(yong)于(yu)制造(zao)(zao)或出口貿(mao)易商對出口電(dian)器(qi)產品的(de)用(yong)電(dian)檢測(ce)、調試及用(yong)于(yu)精密儀(yi)器(qi)的(de)供電(dian)電(dian)源。廣泛適用(yong)于(yu)家電(dian)制造(zao)(zao)業、電(dian)機、電(dian)子制造(zao)(zao)業、IT產業、電腦設(she)備、實驗(yan)室(shi)等。
★ 家電業制造商如:空調設備(bei)、咖啡機(ji)、洗衣(yi)機(ji)、榨(zha)汁機(ji)、微波爐、收錄音機(ji)、冰(bing)箱、DVD、洗塵器、電動剃須刀等產品(pin)的測試電源。
★ 電(dian)機(ji)、電(dian)子業(ye)制造商如:交換式(shi)電(dian)源供應(ying)器、變壓(ya)器、電(dian)子安定器、AC風扇(shan)、不(bu)斷電(dian)系統、充電(dian)器、繼電(dian)器、壓縮機(ji)、馬達、被動(dong)元件等(deng)產(chan)品的測試電(dian)源。
★ IT產(chan)業及電腦設備制造(zao)商如:傳真機、影印(yin)機、碎紙機、印(yin)表機、掃描(miao)器(qi)(qi)、燒錄機、伺服器(qi)(qi)、顯示器(qi)(qi)等產(chan)品的測試電源。
★ 實驗室及(ji)測試(shi)單位如:交流電源(yuan)測試(shi)、產品壽命及(ji)安全(quan)測試(shi)、電磁相容測試(shi)、OQC(FQC)測試、產品測試及研發、研究單位最佳交(jiao)流電源。
★ 航(hang)空/軍事(shi)(shi)單位如:機場地面(mian)設(she)施(shi)、船舶、航天、軍事(shi)(shi)研究所等的測試電源。
★ 鐵(tie)路、高速公路:25Hz、靜頻信號電源(yuan)。