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.
To watch more teardown videos with articles full of high resolution pictures, check out the complete list of equipment teardowns that I have done. ABB TRIO 20 kW Solar Inverter – Unboxing and Teardown.
Sirio 10000P parts, PCB, IGBTs and controller
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 power electronics are all on a single large PCB. All other modules like mains filter, controller, drivers and house keeping power supplies are smaller boards connected to the large one. Either through cables or being soldered directly to the board through pin headers.
Firstly 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. Secondly 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 2×6 Nippon Chemi-con 450V 680 uF electrolytic capacitors. They are in series/parallel, for a total of 4080 uF at 900V..
The mains filter is very thoroughly made. It uses MKP capacitors, multiply 3 phase inductors, ceramic capacitors, MOVs, resistors and 3 phase unbalanced current detection.
Hello, how are you I have a sirio 10000 X solar power converter. I want to try if it works. I don’t have a solar panel.
You could try with a power supply that can supply the PV string voltage on the input, maybe even make it from a series connection of batteries. But it will properly require a minimum of 14x 24V batteries in series, which starts to be a dangerous high DC voltage to work with. Be careful.
This is an amazing teardown, great work! I have this inverter and it has been working for nigh on 20 years, but now it has a DC sensor error. Do you have any advice on where to start troubleshooting this of even fixing it if possible?
Hi Carsten
Thank you very much! Do you have any more details on the reported error? DC sensor error could be two things. Current or voltage. If its current, look for current transformers or hall effect sensors, where you have a large conductor going through a component with 2-4 logic level output legs. If its voltage, it will be a string of resistors, to handle and divide the high voltage on the PV string or DC bus.
My guess would be its a DC voltage resistive divider that has failed, as current transformers seldom fail.
Kind regards
Mads
First of all, thanks for the swift reply.
I don’t have any specifics on the error, since it is an error message shown in the display along with a red warning light and an acoustic alarm. As i am currently undergoing an apprenticeship (Jeg er ved at uddanne mig til elektronikfagtekniker) I am not at all certain when it comes to the hows, whens and wheres of electronics.
But again, you are providing tons of help and guidance and i find it valuable beyond measure so thank you very much.
I will do some searching and see what i find on the boards 🙂