AB模块1783-US7T1H

1783-US7T1H

无刷直流电动机由直流电源供电，借助位置传感器来检测转子的位置，所检测出的信号触发相应的电子换相线路，以实现无接触式换相。

　　无刷直流电动机用电子开关和位置传感器代替电刷及换向器，将直流电转换成模拟三相交流电，通过调制脉宽，改变其电流大小来改变转速。

　　无刷电机采用3 相线通电。电机本体的定子中，有与3 相对应的线圈（数量为3 的倍数）。各相线圈根据转子的转动位置进行换流（改变电流的方向）。通过改变换流速度与经PWM调制后的电压，控制电机的转动。逆变器的作用是利用直流电源（电池）生成各相的功率信号（交流生成电路）。

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