VVVF是Variable Voltage Variable Frequency(变压变频)的缩写，由变压回路和变频回路构成。 用于送风机转数控制、风扇转数控制、传送带速度控制、旋转给料机转数控制等控制操作。
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电压与频率配合调整是变压变频调速(Variable Voltage Variable Frequency)的基本原理,令电压与频率以函数关系共同变化是最容易想到的思路。
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VVVF Variable Voltage Variable Frequency 变压变频 ; 空冷风扇等
Variable Voltage and Variable Frequency 改变电压 ; 变频技术
Variable Voltage Variable Frequency VVVF 交直交变频VVVF
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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。
Self-excitation of induction motors caused by output LC filters of variable voltage variable frequency(VVVF) power supplies is harmful both to the motor and the power supply.
变频器LC滤波器中电容器与异步电机之间自激引起的过电压会对逆变器和电机本身产生危害。
By adjustment to control signal, systems might realize variable voltage, variable frequency, steady voltage, steady frequency closed loop control.
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。
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