變頻器原理定義

變頻器原理（英文Variable-frequency Drive
，簡稱VFD）是shi應ying用yong變bian頻pin技ji術shu與yu微wei電dian子zi技ji術shu的de原yuan理li，通tong過guo改gai變bian電dian機ji工gong作zuo電dian源yuan頻pin率lv的de方fang式shi來lai控kong製zhi交jiao流liu電dian動dong機ji的de電dian力li控kong製zhi設she備bei。使shi用yong的de電dian源yuan分fen為wei交jiao流liu電dian源yuan和he直zhi流liu電dian源yuan
，一yi般ban的de直zhi流liu電dian源yuan大da多duo是shi由you交jiao流liu電dian源yuan通tong過guo變bian壓ya器qi變bian壓ya，整zheng流liu濾lv波bo後hou得de到dao的de。交jiao流liu電dian源yuan在zai人ren們men使shi用yong電dian源yuan中zhong占zhan總zong使shi用yong電dian源yuan的de95%左右。