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.
介绍一种采用低压电压型变频器、正弦波滤波器和变频升压变压器构成的低-高式中压变频控制系统。
A kind of medium voltage AC variable frequency control system, which consists of voltage source inverter, sinuous filter and stepup transformer with variable frequency, is introduced.
通过对控制信号的调整，系统可实现变压、变频、稳压、稳频的闭环控制。
By adjustment to control signal, systems might realize variable voltage, variable frequency, steady voltage, steady frequency closed loop control.
基于矢量控制的变压变频调速在高速列车中得到广泛应用。
Variable voltage and variable frequency system based on vector control is applied widely in high speed train.
依据交流电机的控制策略，提出了适用于电动汽车交流电动机控制的变频变压调速和矢量控制两种控制的实现方法。
According to the control strategy of ac motors, the two control means put forward to be applicable to electric vehicle about VVVF and space vector.
永磁同步电机调速系统是采用变压变频技术对电机进行调速的控制系统。
The speed-adjusted system for Permanent magnet synchronous motor is used VVVF technology.
永磁同步电机调速系统是采用变压变频技术对电机进行调速的控制系统。
The speed-adjusted system for Permanent magnet synchronous motor is used VVVF technology.
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