I was wondering if the following approach to make a very low voltage / high current rectifier (~0.1 V, 1 kA DC) from 230 V AC has any sense or not. Aiming at simplicity rather than effectiveness, I sketched the following diagram:
Here you can see transformer with 230 V AC input (shown at the top) and two secondary outputs (shown at the bottom), say of 18 V AC. Naively, I was thinking to add another single-turn secondary with MOSFETs that can simply be controlled by voltage from Zener diodes. So, would anyone comment if actual rectification on the A-B output can be produced in such circuit?