變(bian)頻(pin)電(dian)(dian)源用于把國內220V50Hz變(bian)為(wei)110V60Hz、220V60Hz。國內很多廠家(jia)說什么負載都能帶(dai)。 變(bian)頻(pin)器：只(zhi)適用于電(dian)(dian)動機(ji)傳動。輸出220V、380V、660V等。而(er)且(qie)頻(pin)率為(wei)0-400Hz。但只(zhi)能帶(dai)電(dian)(dian)動機(ji)負載。他們原理(li)上有什么不同(tong)。

　　近十年來,由整個電路構成交流一直流一交流一濾波的變頻裝置變頻電源,應運而生,并得到廣泛應用。變頻電源不僅能模擬輸出世界不同國家的電網指標,而且也為出口電器廠商一工程師在設計開發、生產、檢測等應用中提供純凈可靠的、低詣波失真的、高穩定的電壓和頻率的正弦波電力輸出。變頻電源是非常接近于理想的交流電源。 
    變頻電源與采用發電機組變頻的比較
過(guo)去(qu)多采用馬達發電機(ji)組（中頻發電機(ji)組）變頻,由于它(ta)耗電量大、噪(zao)聲大、體積大、精度差、有污染,需另設房間放(fang)置(zhi),并需專人管理等(deng)的不(bu)足,已逐漸被變頻電源所取(qu)代。

變(bian)頻(pin)電(dian)源與(yu)變(bian)頻(pin)器的區別一：

　　變(bian)頻(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)整個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路由交(jiao)(jiao)流一直流一交(jiao)(jiao)流一濾波等部分構成(cheng), 因此它輸(shu)出的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流 波形(xing) 均為(wei) 純正(zheng)的(de)(de)正(zheng)弦波 , 非常接近理想(xiang)的(de)(de)交(jiao)(jiao)流供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源。可以輸(shu)出世(shi)界任(ren)何國家(jia)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和頻(pin)率(lv)(lv)。而(er)變(bian)頻(pin)器是由交(jiao)(jiao)流一直流一交(jiao)(jiao)流（調(diao)制波）等電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路構成(cheng)的(de)(de),變(bian)頻(pin)器標準叫(jiao)法應為(wei)變(bian)頻(pin)調(diao)速器。其輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)波形(xing)為(wei)脈沖方波,且諧波成(cheng)分多,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)和頻(pin)率(lv)(lv)同(tong)時按比例變(bian)化(hua),不(bu)(bu)可分別(bie)調(diao)整,不(bu)(bu)符合(he)交(jiao)(jiao)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)要(yao)求。原則上不(bu)(bu)能做(zuo)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)使用,一般僅用于三相異步電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)調(diao)速。

　　可以看出(chu)兩者明顯有不(bu)同，變頻器也(ye)可當電源用！只不(bu)過大材小用！變頻器的輸出(chu)加上正弦濾波后可得(de)變頻電源。

變頻(pin)電源與變頻(pin)器的區別二：

　　變頻電源與變頻器在現代化的工業生產中都發揮著十分重要的作用，但是二者在用途、負載類型、輸出電壓、輸出頻率、輸出波形、控制方式等方面都有各自的特點，因此變頻電源的選購者有必要認清楚區別，從而根據自己的需求，選擇出真正適合自己的產品。
變(bian)頻電(dian)源(yuan)的輸出(chu)電(dian)壓(ya)在滿(man)載的條(tiao)件下，輸出(chu)電(dian)壓(ya)穩定(ding)度(du)為設(she)定(ding)電(dian)壓(ya)的1%，而(er)變(bian)頻器的輸出(chu)頻率隨著電(dian)機工作(zuo)特性的改變(bian)而(er)改變(bian)。

變頻(pin)電源與變頻(pin)器(qi)的區別三：

　　變頻電源無輻射干擾,傳導干擾低,能滿足實驗室設備對于電源的要求，而變頻器輻射干擾較低，傳導干擾強，實驗室設備無法正常工作
變頻電源允許輸出單相及三相,三相輸出時,能承受100%不平衡負載，而變頻器只有三相輸出，且三相時承受不平衡負載能力差；
變(bian)頻(pin)電源采用IGBT/SPWM式(shi)(shi)的(de)控制方(fang)式(shi)(shi)，而變(bian)頻(pin)器則(ze)采用IGBT/V/F控制方(fang)式(shi)(shi)。