Halbach arrays are a handy thing and are easily made with conventional magnets, but could it be done with electric coils and would there be an advantage in doing so?
Spiny Norman said:
Halbach arrays are a handy thing and are easily made with conventional magnets, but could it be done with electric coils and would there be an advantage in doing so?
> A Halbach array is a special arrangement of permanent magnets that augments the magnetic field on one side of the array while cancelling the field to near zero on the other side. The principle was first invented by James (Jim) M. Winey of Magnepan in 1970, for the ideal case of continuously rotating magnetization, induced by a one-sided stripe-shaped coil.
I hadn’t heard of these. I’m trying to think of an application.
Mag-lev perhaps, or NMR?
I can’t see much use for particle accelerators or fridge magnets.
Here’s one use.
Teslas Model 3 motor design
A bit more searching found this, at least.
It doesn’t seem to generate a Halbach array, but it does eliminate the need for magnets.