I want to use a cheap chinese generator as a backup to be able to charge my battery bank during bad weather. Problem is the generator AC output is not very clean so I don't want to hook it to the AC input. What if I rectify it to DC and run it into the PV input on my MPP Inverter to fake solar PV production? Question is how picky is my MPP Solar inverter (GIK3024) on the PV input? DC voltage will be rectified 230V AC (Europe) to approx 320 V DC. This should work fine in theory right? Max PV voltage is 500 volt and MPPT works between 120-450 volt acording to manual. Any downsides doing it like this?