I have purchased a 4 kVA switchmode 12 vdc to 230 vac inverter which has a modified sine wave output (not seen the waveform yet) and I need to build a filter to reduce the interference and harmonic content. The inverter will be used to power the household including a few 1hp induction water pumps so the load will be variable. I am a retired rf design engineer but I don't know much about heavy current power filters. I live in rural Africa and will probably wind the inductors myself with air cores. I only have simple electronic tools, dvm and oscilloscope. I see on the forums that an Ott filter is used, I am not familiar with this type, or why it is recommended. Can anybody help me with a simple design.
many thanks,
Brian Cobern
many thanks,
Brian Cobern