For this project ABB Italy and ABB South Korea will supply low voltage switchgear, intelligent motor control units and variable frequency drives.
ABB意大利公司和ABB韩国公司将为这个项目提供低压开关柜，智能电机控制单元，以及变频器。
The variable voltage variable frequency(VVVF) control of 3-phase induction motor for driving trolleybuses is expounded.
介绍无轨电车采用变压变频控制的三相感应电动机驱动技术。
The variable voltage variable frequency(VVVF) control of 3-phase induction motor for driving trolleybuses is expounded.
介绍无轨电车采用变压变频控制的三相感应电动机驱动技术。
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