1) The main advantage of static frequency converter is that it is independent of supply voltage and load variations.  The output frequency is entirely depend on the oscillator  which is to control the on/off of static devices. So it is completely independent of fluctuations in the ac supply voltage and frequency. In other case it also independent of load variations. In induction motor there will be slight speed change because of rotor torque but this will be constant through out the speed range. In synchronous motor the motor speed is solely depends on reference oscillator.

2) Static frequency converters have low installation costs, because they don’t require heavy machinery and careful alignment.

3) Static converters occupies less space and offers low noise compared to mechanical converters with heavy machinery.

4) The operating cost of static devices is low due to its high efficiency and the movable parts which deteriorates the life of the components.

5) It offers a wide variety of voltage and frequency control with a great control due to its independence of supply voltage variations.

6) The output volts/hertz can be adjusted to suit the adjustable speed motors and a large starting torque can be provided if it is needed.