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Hi Ole,
From a conventional point of view, it makes no sense for me to switch to 0 ohms, it's a simple short circuit, destroying the switches and delivering no usable energy.
We have a main LC (three-phase transformer) that generates reactive power, which we transfer via coupling capacitors to the diode plug. Two diodes split the positive and the negative half-wave into a half-LC.
So far so good. The diodes are not the problem because I can also switch reactive power through a FWBR without noticeable losses, that's how I see it.
Further, when this half LC is charged, it must perfectly re-enter the main LC so that it consumes no additional active power.
What does it look like based on a reactive window in which time does the energy have to be transferred? It is not enough to discharge the capacitor in time, the coil of the push-pull transformer must not deliver any magnetic energy in the direction.
Unfortunately, the fact is that I apply energy for reactive power and again the same when switching the thyristors and the later I discharge the thyristors the more active power I use in addition. If I increase the load secondary, the input energy decreases slightly.
If you reach the point where only the energy for the reactive power must be applied and a few watts for the switches then we are a long way further.
The transformer is quite big with 6.3 kva but it also has a fairly small inductance, you still have room on your thighs, you could now apply additional windings that further negate the inductance, but then I also transfer less energy or see that wrong. The high-inductive 230 / 24V transformer I do not need to connect directly because the inductance is so high, there is only a single switch and the energy dies, even if I short-circuit it on the secondary side.
The only element I know with an extremely low resistance are batteries that I have only 11 milli ohms although they are not very big, but I can not pop such discharges directly into a 24 volt battery right?!?
I try on different contacts such as diodes, push-pull-transformer, thyristor, etc. to make a scope picture maybe even a video if it's worth it.
regards
Sven