Container farms take a lot of light. Powering it is not cheap. And I have spent a lot of time pondering the different possibilities.
I've developed a PCB to control 4 x 300watt PWM amplifiers. This gives me a simple controller that can handle sets of 4 channels of say 3 x 100watts COBs. The inputs into these are ~24-27v and ~1500watts, so a single PSU at around $150 a pop will do it.
But that is not cheap.
I have some very grunty 5v controlled 20kw SCRs and 240v. If I rectify this with a FWBR and smooth it then divide in series by 12 light controllers, I get my ~27v to each fitting.
Was basically thinking to make a secure enclosure with 240v in and say 12 sets of terminals out. But how do I separate the terminals within the enclosure - i.e. types of resistor - and what happens if the load between terminals is very uneven (lights unused).
And is all this too silly, and not worth the $2000+ in savings for individual SMPS units.