Teardown of a Sirio 10000P solar inverter designed in Italy and made in Taiwan. A extremely heavy and well built power house. Full of TO-264 sized IGBTs and a giant single PCB layout for the inverters.
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The inverter is still available from the manufacturer, Aros solar technology. I found it to be very heavy and hard to handle, with its 37 kg in a enclosure that measures 444 x 151 x 584 mm.
The solar panel to DC link inverter uses 3 legs of 2 Fairchild FGL40N120 IGBTs in parallel and a Fairchild RHRG75120 ultra fast diode . This is from the 3 solar panel array strings. The output inverter uses 3 legs of 4 Fairchild FGL40N120 IGBTs in parallel. This is for a 3 phase output of 400 VAC 50 Hz. Thirdly the DC link consists of 2x6 Nippon Chemi-con 450V 680 uF electrolytic capacitors in parallel, for a total of 4080 uF at 900V.
