Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
This ain't rocket surgery.

idea: add, search, annotate, link, view, overview, recent, by name, random

meta: news, help, about, links, report a problem

account: browse anonymously, or get an account and write.

user:
pass:
register,


               

higher efficiency Motor with electrodeposited pole pieces

Pole pieces give greater magnetic field concentration, cover the outer perimeter of motor windings with eentsy glitterlike pole pieces to give greater field strength right at the area of greatest effectiveness
  (+4)
(+4)
  [vote for,
against]

Think of a simple magnetic motor, all the magnetic field motive activity occurs right at the outer perimeter of the winding where it pushes at the magnetic field of the surrounding

Ive read that pole pieces change and concentrate magnetic fields

Thus using some kind of electrodeposition of pole piece shapes on a prewound wiring (even over insulation) would create noticeably intensified magnetic field right at the perimeter causing greater push force to the surrounding magnetic field yet the pole pieces could just be microns thick electrodeposited coating on the winding.

It would look like sparkly glitter covered wiring from the tiled pole pieces electrodeposited on the outside of the winding.

Along with the microarea at the perimeter having higher magnetic flux intensity from pole pieces It is a thought that placing these pole pieces at the motive perimeter would "draw" more of the volume shape of the magnetic field towards the perimeter further increasing efficiency

There is another available benefit, magnetic generators at power plants have vast gaps between the rotating core and the outer field. Thus even if we create gigantic 1mm pole pieces It might give 1 to 5 pct higher efficiency at electrical generators which represents dozens or even hundreds of entire power plants energy worldwide

beanangel, Jan 12 2012

[link]






       I am going to read it after tea.
VJW, Jan 13 2012
  

       Does this outer winding come close to the rotor / stator gap?
RayfordSteele, Jan 13 2012
  

       A diagram would be great.
VJW, Jan 13 2012
  

       I don't know where to start with this. I suppose that 200 years of development have pretty much exhausted any obvious gains in efficiency in pole and air gap design.   

       Next is just my opinion, maybe wrong...
But there has been a relatively recent materials development that could be applicable. That is thermal spraying. Compared to electro-deposition, thermal spraying can use alloys, which will be better for magnetic application. Moreover, the process is relatively 'cold'. Maybe the copper wire plus insulation could be coated by thermal spray before winding?
Ling, Jan 14 2012
  

       would this be applied to the metal frame of the rotor or the windings themselves? because most windings use copper for it's conductivity, but a lot of care is taken in how it lays in there because its a much software metal. It flexes enough just from vibration and field strength for the wire coating to weaken.. this is one of the most common reasons for failures is a shorted winding. Often the entire assembly gets potted in resin to reduce this as much as possible.
AutoMcDonough, Jan 14 2012
  

       microglitter sized pole pieces on the wire above the insulation   

       it would be wonderful if the magnetic field simulation software Ive seen modelled it Im really wondering about the pole pieces
beanangel, Jan 18 2012
  

       Actually the material would migrate in such a way to better convert the field strength into heat. Fail.
WcW, Jan 18 2012
  
      
[annotate]
  


 

back: main index

business  computer  culture  fashion  food  halfbakery  home  other  product  public  science  sport  vehicle