DCS402.0550直流調速器ABB
DCS402.0550直流調速器ABB
DCS402.0550直流調速器ABB
DCS402.0550直流調速器ABB參數表
DCS402.0550直流調速器ABB使用說明書
DCS402.0550電壓通用型調速器的工作原理:是通過改變輸出方波的佔空比使負載上的平均電流功率從0-100%變化、從而改變負載、燈光亮度/電機速度。利用脈寬調制(PWM)方式、實現調光/調速、它的優點是電源的能量功率、能得到充分利用、電路的效率高。例如：當輸出為50%的方波時，脈寬調制(PWM)電路輸出能量功率也為50%，即幾乎所有的能量都轉換給負載。而採用常見的電阻降壓調速時，要使負載獲得電源·大50%的功率，電源·須提供71%以上的輸出功率，這其中21%消耗在電阻的壓降及熱耗上。大部分能量在電阻上被消耗掉了、剩下才是輸出的能量、轉換效率非常低。此外調速器因其採用開關方式熱耗幾乎不存在、調速器在低速時扭矩非常大、因為調速器帶有自動跟蹤PWM、另外採用脈寬調制(PWM)方式、可以使負載在工作時得到幾乎滿電源電壓、這樣有利於克服電機內在的線圈電阻而使電機產生更大的力矩率。
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