Single-phase variable frequency switch gear
that will operate at an output voltage of 120 VAC with
frequencies between 1-60 Hz will be designed, built, and tested.
The single-phase variable frequency switch gear will use a
user-selected input frequency between 1 and 60 Hz and generate an
output voltage with a constant Volts/Hertz ratio.
The single-phase variable frequency switch
gear designed will contain components necessary for a variable
frequency drive.
Successful design of single-phase variable frequency switch gear can
be extended to three phases, which will pave the way for design of a
variable frequency drive.
Variable frequency drives vary the speed of three-phase
alternating current induction motors by varying the frequency and
voltage supplied to the motor.
Variable frequency drives are important because they provide
energy efficiency benefits to industries that consume large amounts
of power operating AC machines.