LM338 floating

flatfootskier · Jul 29, 2017

ronsimpson said:
Why do you need current limit?
View attachment 107305

To keep within the thermal envelope of the transformer's continuous rating

flatfootskier · Jul 29, 2017

N11778 said:
My best guess.
View attachment 107306

Not sure your efficiencies are particularly accurate, but regardless, I'm not trying to make money by exporting to the grid. I'm taking from the grid, losing a bit as heat, then exporting a bit less back on a test bench. It's not about generating per se, the goal is to allow me to simulate a PV array to test some inverters and some ImmerSun type diverters & other PV related ancilliary gizmos.

it's kWh by the way... and one the main reasons is that I want to be able to simulate/test PV equipment in the dark.

N11778 · Jul 29, 2017

PV equipment won't work in the dark.

crutschow · Jul 29, 2017

N11778 said:
PV equipment won't work in the dark.

Unless there's some near IR floating around.

KeepItSimpleStupid · Jul 29, 2017

flatfootskier said:
Not sure your efficiencies are particularly accurate, but regardless, I'm not trying to make money by exporting to the grid. I'm taking from the grid, losing a bit as heat, then exporting a bit less back on a test bench. It's not about generating per se, the goal is to allow me to simulate a PV array to test some inverters and some ImmerSun type diverters & other PV related ancilliary gizmos.

it's kWh by the way... and one the main reasons is that I want to be able to simulate/test PV equipment in the dark.

Could you use an "Electronic Load"? In escence program the curve of the solar array. I worked in the basic research part of the industry.

Not sure if it would work at all, but you have constant I, V, P, and R available to you.

flatfootskier · Jul 30, 2017

N11778 said:
PV equipment won't work in the dark.

Re-read the thread. You've been commenting all the way through it. Your post count and credibility are creating an inverse squared curve.[/QUOTE]

flatfootskier · Jul 30, 2017

KeepItSimpleStupid said:
Could you use an "Electronic Load"? In escence program the curve of the solar array. I worked in the basic research part of the industry.

Not sure if it would work at all, but you have constant I, V, P, and R available to you.

Thanks for the 'teaser!!' would be lovely to have but I have the transformers & if I can just make the current limiting work I'm pretty much where I want to get with not much outlay.

N11778 · Jul 30, 2017

Sorry this thread is so over my head I thought is was a game of charades.
Guess what i'm doing.
3 words, first word......
Again sorry.

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