特點(diǎn)  
    SIRIUS 3RW40采用擁有權(quán)的全新控制技術(shù)－“相位平衡”。該控制技術(shù)能夠防止兩項(xiàng)控制軟起動器中的直流成分。對于兩相控制軟起動器 ，來自兩個(gè)控制相位的電流會流經(jīng)未受控制的相位。因此，從純粹的物理角度來看，在電機(jī)起動時(shí)，三相電流會不對稱。這雖然不受影響，但 在大多數(shù)應(yīng)用中仍不可忽視。除了這種不對稱性之外，如果在兩個(gè)控制相位中控制功率半導(dǎo)體器件，則會產(chǎn)生直流成份。在起動電壓低于50%時(shí)，則會造成電機(jī)中出現(xiàn)噪音。“相位平衡”技術(shù)則能夠可靠避免電機(jī)起動時(shí)的這些直流成份。它可就轉(zhuǎn)速、轉(zhuǎn)矩和電流增量方面生成統(tǒng)一的電機(jī)起動特性。并且起動噪聲質(zhì)量和控制三個(gè)相位的起動設(shè)備一樣。這可通過連續(xù)動態(tài)調(diào)整和均衡電機(jī)加速時(shí)不同相位的半波電流實(shí)現(xiàn)。  ：  /

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