Hunstable Electric Turbine

[Seeker]

A "new" electric motor which can misalign its magnetic fields which is, apparently, a good thing (who knew?):


https://jalopnik.com/a-texas-startup-claims-to-have-made-the-biggest-advance-1837173127

[SV650rules]

Yes field weakening increases the speed of rotation but lowers the torque available, when we did motors at college ( too many years ago to think about )

https://www.sciencedirect.com/topics/engineering/field-weakening-region

We were taught that in a series wound motor that as the load falls the current falls but flux falls faster in the field winding ( stator ) and the speed increases until it spins itself into oblivion... series wound motors had advantages but most are shunt ( parallel ) wound or smaller ones permanent magnet.

https://www.reddit.com/r/AskEngineers/comments/33arz2/what_causes_runaway_in_a_dc_series_motor_with_no/

If you watch the video of the Hunstable motor they replace the normal huge car battery with a battery that is about 90% smaller - they only claim 10% extra range
so bit of a liberty to replace a 90Kw/h battery with two alkaline 'D' cells....