Looks like an excellent treatment to move in the direction of making the most of the common automotive alternator. There's a lot of idle surplus units everywhe

Looks like an excellent treatment to move in the direction of making the most of the common automotive alternator. There's a lot of idle surplus units everywhere, plus almost all of them in use only generate electricity when fuel is being burnt. So there's plenty of upside by repurposement for widespread capture of new clean energy. However it seems like the use of a field coil instead of permanent magnets is a compromise in efficiency that was made to save cost per unit, especially considering that the potential energy generated in excess of nominal is always going to be unused in automotive application. I would like to see them take a look at the much more uncommon commodity units having permanent magnets and go through the equations on that. Like from farm equipment or even actual portable or stationary generators where the IC engines are worn out or too costly to run but the electrical parts can be repurposed. Could probably come up with some fairly simplified rules of thumb about mechanical interfacing for wind capture, plus electrical interface for delivery, and I would expect both to be quite a bit different than the field coil units.