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PLC系统模块EL9010
计算矢量占空比:根据所选矢量的方向,计算出两个相位信号的占空比。这个计算过程可以用三角函数和矢量旋转的方法来实现。
输出PWM信号:根据计算得到的占空比,生成PWM信号,控制电机输出。在SVPWM中,PWM信号的频率和幅值是固定的,只有占空比在变化。 SVPWM与其他PWM调制方法相比,具有以下优点:
低谐波:SVPWM可以产生低谐波的输出波形,可以减少电机的振动和噪声。
率:SVPWM可以控制电机的转矩和速度,使电机运行更加。
控制:SVPWM可以控制电机的输出,可以应用于和的电机控制。总的来说,SVPWM是一种的PWM调制方法,可以将三相交流信号转换为两个相位信号,从而实现电机控制。SVPWM的原理基于空间矢量理论,可以产生低谐波、率的输出波形。
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