《IC698CPE010》

《IC698CPE010》

 SPWM法從電動機供電電源的角度出發(fā)，著眼于如何產生一個可調頻調壓的三相對稱正弦波電源。具體方法是以一個正弦波作為基準波（稱為調制波），用一列等幅的三角波（稱載波）與基準正弦波相交，由它們的交點確定逆變器的開關模式。為了提高逆變器的輸出電壓幅值，針對SPWM法，人們提出了準優(yōu)化 PWM法，即三次諧波疊加法。在正弦波中注入一定比例的三次諧波后，調制波的幅值大大降低，在調制波沒有過調制的情況下，可使基波幅值超過三角波幅值，實現調制系數大于1的調制。在這種調制方式下，zui大調制比可提高到1.15左右，相應直流母線電壓的利用率zui大可提高15%。

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DCS集散式控制系統(tǒng)、PLC可編程控制器、數控系統(tǒng)、（CPU處理器、模塊、卡件、控制器、伺服驅動、驅動器、馬達電機、 內存卡、 電源，機器人備件等）各類工控備品備件產品。(A-B,ABB,GE,FOXBORO,KUKA,SIEMENS,WESTINGHOUSE,SCHNEIDER……)

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