Choosing the right Inductor for aftermarket inverter motherboard

Fabian
Fabian Registered Users Posts: 137 ✭✭
edited November 12 in Off Grid Solar & Battery Systems #1
I am rebuilding my 48v 10,000 power jack split phase inverter that uses a EI type transformer by installing a aftermarket pure sinewave inverter motherboard.
The problem i am facing is that i am not sure which size amp and UH inductor to use because this is a requirement for installing the new board. 
The inductor will decrease the standby current of the  motherboard but u have to choose it correctly for it to work good.
Please take a look on the motherboard and also the size inductors in the links below and tell me which size inductor i should use.
https://www.aliexpress.us/item/3256810005635519.html

(note: I have shorted the above two links... The longer links sometimes contain "login" information and such from the original poster... -Bill B moderator)
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,720 admin
    #2
    One possible idea--If you have longer periods of low/standby power usage (LED Lighting, Security System, etc.)--Install a second smaller AC inverter to power just those loads --was save running the larger inverter for those "large/optional" AC loads.

    In the 'olden days', there were not many "low power" 48 VDC inverters out there... Today there are quite a few options.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Fabian
    Fabian Registered Users Posts: 137 ✭✭
    #3
    BB. said:
    One possible idea--If you have longer periods of low/standby power usage (LED Lighting, Security System, etc.)--Install a second smaller AC inverter to power just those loads --was save running the larger inverter for those "large/optional" AC loads.

    In the 'olden days', there were not many "low power" 48 VDC inverters out there... Today there are quite a few options.

    -Bill
    I already know about that. I just want to rebuild the inverter asap but want to purchase the inductor but confused as to what size to pick. Please help me guys. I 
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  • Jackielei
    Jackielei Registered Users Posts: 5 ✭✭
    #4
    Without the specific technical specifications (datasheet) for your new inverter motherboard, anyone who suggests a specific inductor value (µH) and current rating (A) is making a blind guess. Using the wrong inductor can lead to immediate failure (burning out the MOSFETs on the board) or poor performance (low efficiency, overheating).
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  • Fabian
    Fabian Registered Users Posts: 137 ✭✭
    edited November 18 #5
    I noticed that the original power jack board already have a few wrappings around a small inductor would this suffice in reducing the no load current on the aftermarket board and would this size inductor maybe be the right fit for the aftermarket board seeing that it was being used on the original board?
    I am going to take a pic(s) and upload it soon so u can see it and decide for me.

    Saw this pic giving some details about choosing the inductor on a similar board.
    https://www.solarpaneltalk.com/filedata/fetch?id=444318
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