Explained
in the simplest way possible, a
frequency converter
is a device used to change alternating current of one frequency into
alternating current of another frequency. The device can be either
electronic or electromechanical. Besides its principal purpose, a
frequency converter
sometimes may change the voltage as well. The reason why you can
still find
frequency
converters
in two variants (electronic and electromechanical), is because the
first devices used for the purpose, were electromechanical machines
known as motor-generator sets. They employed smaller devices with
mercury arc rectifiers and vacuum tubes. Today, thanks to solid state
electronics, there are completely electronic converters that have a
rectifier used to produce direct current which is then inverted to
produce the alternating current with the desired frequency.
