Help with sourcing small test inverter

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watts-on

Member
Joined
May 27, 2017
Messages
188
Hi,
Im trying to source a small inverter (a few 100W at most) 48VDC to 240VAC 50Hz with real-time control of output current via some published communication protocol and ideally with grid tie function.
I want this for bench testingsome gear that I will eventually be using in my full power wall.
Does such a thing even exist?
Any pointers greatly appreciated.
 

daromer

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Oct 8, 2016
Messages
5,659
This one I think does what you want: https://goo.gl/BP7KFU (Ebay link)

Though not controllable from serial or other but just by meny. I have asked them before for one of my projects.
 

watts-on

Member
Joined
May 27, 2017
Messages
188
Thanks daromer.
I have ordered one of those now.
I decided to go for the 2KW one 45-90V input.
It is a shame about having no serial control.
Although, hmm, I have in idea about that...
 

Jeremy Choy

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Joined
May 10, 2017
Messages
60
watts-on said:
Thanks daromer.
I have ordered one of those now.
I decided to go for the 2KW one 45-90V input.
It is a shame about having no serial control.
Although, hmm, I have in idea about that...

I have been running the 2kw model for the past few weeks. seems like a good unit, but lacks in the remote monitoring department.
 

Korishan

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Jan 7, 2017
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6,549
I think for remote monitoring, it'd be neat to use the ESP8266 module and get the data wirelessly. I think it'd be easy to tap into the unit and pull power internally. Could even include a small lithium cell and add a few relays and such and make these units "very" smart and capable with little parts, work, money to do so.
 

watts-on

Member
Joined
May 27, 2017
Messages
188
Yes, monitoring should be relatively easy to add, but I was more interested in controlling the unit by serial or other comms.
I'm thinking about creating a programmable C.T. clamp emulator to feed into the unit instead ofthereal externalclamp. This would then trickthe unitinto doing what I want.
 

daromer

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Oct 8, 2016
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5,659
watts-on yes i have had the samt idea. i have talked to them in fb group and they had no plan for external setting for the load out... yet..
But I would need that myself to compensate easily. Current inverter only do 1000w per fase and i need alot more :D
 
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