IMHO The bucking would need to occur at the load. This would be a design issue with the equipment and not a supply issue.
That can be fine tuned to some extent by changing value of connected capacitors within the rotary phase converter. It can still vary depending on loading conditions though. That is with a basic RPC. There are some out there with more complex controls on them to monitor and adjust to put out a more balanced voltage. They still are going to have a high leg though, even if the idler motor is wye connected, if you draw out the connections including the supply source, you have that supply source across two ends of the wye with a mid point ground on it, the neutral of the wye is left floating or it would result in high fault current if it were grounded. The derived third phase is the remaining motor winding and if your drawing is accurately drawn to vector distance and correct angles you will still have 1.732 times the phase to phase voltage from that high leg to the grounded point, which is part of the supply circuit and not the neutral of the wye connected motor windings.
This is the result of an Italian engineer not understanding what a "high leg" really means, and/or someone explained it to them wrong. A 230V 3 phase motor doesn't USE anything that it L-N or L-G, it only uses L to L, and on a "high leg" delta, it is still 240V L-L on all legs. It is only "high" with reference to ground.
Most of the time they use open delta’s because they don’t have to run the third line in a wye system. If it’s a rural area without the third line, and they just need a cheap way to get three phase out there. So in the OP’s situation, they may also need to run the third line some distance, along with the added transformer.
I know Wiley E. Coyote loved those!
Here, if all three phases are available, you’re getting a wye. LOL! We don’t have much irritation other than in middle and south Georgia.
If only one of the pots has a wired center tap, you know it is a high leg system.
I hate it when autocorrect changes it just as you post so you don’t notice. That’s an irritation, not irrigation!
Absolutely.
You do, but most of it is aerial
.If your customer needs to add more equipment down the road you could look at a doing a 480V service and probably use the transformer to supply the old 240V equipment.
They are interchangeable sometimes though. Was servicing one a week or so ago that was a real irritation
A big reason we have a lot of irrigation here is we have an abundance of ground water compared to a lot of places. Along with that comes special hybrid crops that can deliver high yields, if they get enough water. Those hybrids won't do so well on non irrigated land if you don't get enough water where there are other hybrids that are more drought resistant that typically will be planted on "dryland". You don't invest in all this equipment and energy to run it if you not going to try to get maximum yield out of your crop in other ways as well.
I have suggested that many times at a campus I regularly work at, for some reason they always go with a 240 wye drive isolation transformer, I think I have installed about least two last year for a HVAC contractor, one of reasons cited by corporate was less burden on the safety and compliance team as they get check the 'no' box next to 'systems over 300V' on a safety evaluation form, which sounds dumb I know. The other was cost which was also hard to believe but I don't purchase the stuff.
The fields in North Georgia are much smaller, usually less than 20 acres. So irrigation would not be practical. Our tractors are seldom more than 40 hp too. We have lots of streams and rivers, but very seldom used as irrigation sources.
