MDD071C-N-030-N2L-095GA0變頻器的發(fā)展及作用發(fā)布時間:12-11-15 來源: 深圳市粵鴻遠科技有限公司業(yè)務部 點擊量:47446 更多
變頻空調(diào)、變頻電冰箱、變頻微波爐、變頻洗衣機、變頻電磁爐……這些都是家電企業(yè)打出的綠色環(huán)保牌。而與其他綠色環(huán)保概念有所不同的是,變頻技術不僅帶有公益性質,更主要的是能夠實實在在給消費者帶來實惠。
MDD071C-N-030-N2L-095GA0變頻技術的核心部件是變頻器,變頻器全稱交流變頻調(diào)速器,用于交流電機,在調(diào)整輸出頻率的同時按比例調(diào)整輸出電壓,從而改變電機轉速,以達到交流電機調(diào)速的目的。變頻器是電力電子技術、微電子技術、控制技術相結合的綜合性高技術產(chǎn)品,被稱為“現(xiàn)代工業(yè)維生素”。
MDD071C-N-030-N2L-095GA0變頻器于20世紀60年代問世,到20世紀80年代在主要工業(yè)化國家已經(jīng)得到廣泛使用,特別是在日本,變頻技術在家用電器中的應用更為普遍,幫助其確立了電器大國的地位。
MDD071C-N-030-N2L-095GA0變頻的第一功效即是節(jié)能,電機系統(tǒng)在設計過程中都留有一定的余量,變頻器通過降低電機轉速減少輸出功耗,實現(xiàn)“按需供能”。變頻器用于風機、泵類等,可達到50%的節(jié)能率;用于其他工藝要求調(diào)速的負載,也可獲得10%至40%的節(jié)能效果。
以冰箱為例,我國的電源電壓為220伏、50赫茲,在這種條件下工作的空調(diào)是定頻空調(diào)。由于供電頻率不能改變,定頻空調(diào)的壓縮機轉速基本不變,所以它不能大幅度的調(diào)節(jié)制冷量,而是通過頻繁開啟關閉壓縮機的方式來調(diào)節(jié)房間溫度高低。而與之相比,變頻空調(diào)通過改變電機轉速“按需供能”,這樣它的壓縮機就不會頻繁開啟,會使壓縮機保持穩(wěn)定的工作狀態(tài),可以使空調(diào)整體達到節(jié)能30%以上的效果,同時可以減少噪音(就是所謂的靜音化)、延長空調(diào)使用壽命。
再來看看電梯的例子。安置了變頻器的電梯,可以根據(jù)不同的運載重量、不同的運載里程來改變電機轉速,從而達到節(jié)能和乘梯人舒適性的效果。據(jù)專家稱,在電梯中采用變頻器調(diào)速可以實現(xiàn)節(jié)能40%以上。而據(jù)報道稱,我國使用的電梯中,只有1.92%的電梯采用了變頻控制節(jié)能型電梯主機,而使用10年以上的電梯則均屬于嚴重耗電型。
MDD071C-N-030-N2L-095GA0變頻器的另一重要功效就是可與PLC(專為工業(yè)環(huán)境應用而設計的一種可編程控制器)、上位機(控制臺)等進行配合,達到精確控制、改善產(chǎn)品品質、提高生產(chǎn)效率、降低維護費用、提高生產(chǎn)自動化水平的目的。這似乎與日常生活遙遠,但我們卻享受著這種技術帶來的完美細節(jié)。
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