Iron core inverters use low frequency transformers to convert low AC voltage into high AC voltage. These transformers are most widely used in old inverters. But efficiency of these inverters is not so high. Iron core inverters are bulky, high size, high harmonic distortion and high noise. Iron core inverters also not suitable for solar inverters, because it lose the purpose to make system efficient and to extract maximum energy from solar panels due to low efficiency of iron core inverters.
Ferrite core inverters use high frequency choppers to convert low voltage DC to high voltage DC unlike iron core inverters which convert low voltage AC into high voltage AC. There is different kind of choppers available in market according to shape and power handling capabilities. They operate at higher frequencies. Frequency range varies from few KHz to 100 of MHz’s. Higher the operating frequency of chopper, higher will be will power handling capability of chopper (ferrite core transformer).But there is a limitation in frequency range, because higher frequency cause skin effect issues in windings of ferrite core transformers.