Variable-frequency drive facts for kids
A variable-frequency drive (VFD) is a device used to control the speed and torque of an AC motor by changing the motor input frequency and voltage.
Applications
VFDs are used for many things that range from small appliances to large mining motors and compressors.
Images for kids
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VVVF used on train of Guangzhou metro
See also
In Spanish: Variador de frecuencia para niños
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Variable-frequency drive Facts for Kids. Kiddle Encyclopedia.