The principle of pure digital PWM of the three-phase AC motor is analyzed.
分析了三相交流电机全数字脉宽调制的原理。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
With its high maturity three-phase ac drive technology has become the standard for practically all new vehicles.
交流电传动技术的不断成熟，使其真正成为所有新机车动车的标准。
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