Inverter output current harmonic components may create
crucial condition due to resonance effects of motor and
capacitor components. This can be increase copper losses,
core losses and create pulsation torque. In addition to high
resonance problem that is known as harmonic resonance,
furthermore another kind of resonance may occur, is main
component frequency resonance. This resonance might occur
between capacitors and the machine magnetizing inductance
and limits maximum value of capacitors. In regard to
following equation and main component frequency, maximum
value of capacitors can be assigned as follows