DCS402.0550直流調(diào)速器ABB

DCS402.0550直流調(diào)速器ABB

DCS402.0550直流調(diào)速器ABB

DCS402.0550直流調(diào)速器ABB參數(shù)表

DCS402.0550直流調(diào)速器ABB使用說(shuō)明書(shū)

DCS402.0550電壓通用型調(diào)速器的工作原理:是通過(guò)改變輸出方波的占空比使負(fù)載上的平均電流功率從0-100%變化、從而改變負(fù)載、燈光亮度/電機(jī)速度。利用脈寬調(diào)制(PWM)方式、實(shí)現(xiàn)調(diào)光/調(diào)速、它的優(yōu)點(diǎn)是電源的能量功率、能得到充分利用、電路的效率高。例如：當(dāng)輸出為50%的方波時(shí)，脈寬調(diào)制(PWM)電路輸出能量功率也為50%，即幾乎所有的能量都轉(zhuǎn)換給負(fù)載。而采用常見(jiàn)的電阻降壓調(diào)速時(shí)，要使負(fù)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(zhuǎn)換效率非常低。此外調(diào)速器因其采用開(kāi)關(guān)方式熱耗幾乎不存在、調(diào)速器在低速時(shí)扭矩非常大、因?yàn)檎{(diào)速器帶有自動(dòng)跟蹤PWM、另外采用脈寬調(diào)制(PWM)方式、可以使負(fù)載在工作時(shí)得到幾乎滿電源電壓、這樣有利于克服電機(jī)內(nèi)在的線圈電阻而使電機(jī)產(chǎn)生更大的力矩率。

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