Archive for category Electromagnetics
True DC brushless motor
Posted by zenondorin in Electromagnetics on January 6, 2013
This radically new coil-magnet arrangement is the result of thinking outside of the (magnetic shield) box, while still considering the old Maxwell and Lorenz equations.
It is obviously NOT a perpetuum mobile, doing electrical to mechanical power conversion like any other electric motor, with Joule and Eddy losses as well.
Here’s a very basic animation:
Because of the costly required Mu-metal and custom machining, I do not have a proof of concept unfortunately.
Even if it works it would not completely replace conventional brushed or switched BLDC motors, because of efficiency and power density limitations (part of the coil is unused and has Joule losses without contributing to the electromagnetic torque).
If you know about any other true DC BL motor, please let me know.
MHD vortex experiment and theory
Posted by zenondorin in Electromagnetics on December 31, 2012
Here I give an explanation for the vortex that appears above a magnet when doing water electrolysis.
The basis is this video https://www.youtube.com/watch?v=SAl1LVPbYhY in which the author of the experiment claims the vortex is “unknown to science”.
I have successfully replicated the experiment and provided annotations that fully explain the phenomenon:
When applying voltage between 2 submerged electrodes, the water molecules split into hydrogen and oxygen molecules, with hydrogen also in the form of positive ions.
When a charged particle (hydrogen ion bubble) moves in a magnetic field, it will experience a perpendicular force according to Lorenz Law.
In this case, the magnetic field has a vertical axis of symmetry (the ball magnet sits vertically), with horizontal radial components that generate a vertical torque in the formation of rising bubbles which engage with the neutral surrounding water in a vortex.