Holcomb Energy Systems:Breakthrough technology to the world

[SolarLab]

Hi SL,
As long as you've gone off-topic into pettiness, how's this one? In your post to Pm, shown above, you say "Remant Flux Density (B_r) [Coercivity of material]"
I assume that you meant to type the word remanent. As see here:
.
from: https://en.m.wikipedia.org/wiki/Remanence

Also note Remanent flux density is not the same as Coercivity of material, which your statement of  "Remant Flux Density (B_r) [Coercivity of material]" seems to imply.

The two quantities are clearly shown on your included B H curve.

I noticed this before, but didn't want to appear petty, until now.
bi

Ref: (B_r)

https://www.arnoldmagnetics.com/wp-content/uploads/2017/10/Designing-with-Thin-Guage-presentation-1.pdf

Read it again for comprehension and Note the square brackets... now, refer again to the B-H Loop and the
Arnold Magnetics Technologies presentation above.

And you still look for "Petty" spelling, etc. stupid shit!

You gotta do better than that - thought you claimed to be an engineer!    Quoting Wikipedia - seriously... LOL

From the Arnold Magnetics Technologies presentation:

• Even when the field reaches zero (H=0), there is still some induction remaining in the[/font]
material. This is called the remanant flux density, or Br.
[/font]
[/font]• To bring the induction in the material down to zero, the H field must be driven past[/font]
zero into a negative value called Hc or HcB -- this is the "coercivity" of the material.[/font]

[seychelles]

THANKS FOR SHARING. VERY TECHNICAL BUT VERY USEFUL INFO.
I SUGGEST THAT 3D PRINTING THE SILICON STEEL SHOULD CUT A LOT OF
MANUFACTURING PROCESSES.

[SolarLab]

SL,
I know the answer. And I know electric machine fundamentals, theories and design practices as well as materials, fabrication and testing. I was trying to help. That's all. Why are you beating me up? Let's get back on-topic and look at where on the B H curve Holcomb's device functions. That's why I've mentioned a FEMM 2-D cross section of the magnetic circuit. There would be value.
bi

bi,

F.Y.I. The B-H Curve is absolutely dependant on the "Material" used for the so called Rotor and Stator. Therefore, you must first
select a "Material" for your device before you can look at where on the B-H curve Holcomb's device functions. This is the first part
of the four I mentioned earlier and probably the most difficult part. A fifth part has also been added. This involves fabricating the
rotor and stator (see the 33W Diode Laser Cutter post). 

A good reference (one of many) is the book "Introduction To AC Machine Design" by Thomas A. Lipo, referenced here:

https://www.overunityresearch.com/index.php?topic=4261.msg98963#msg98963

All the chapters are worth a read and chapter 2, 3 and 4 provide accute insight. {pdfdrivedotcom}

Also, with respect to your FEMM diagram; there are a variety of Ansys youtube videos out there that provide some good
detailed information as well.

Appreciate your trying to help - but beating up on a guy who is in the middle of a war with only sparse access to power
and the internet didn't sit well with me - so I speak up! [rakarisky]

SL

[SolarLab]

THANKS FOR SHARING. VERY TECHNICAL BUT VERY USEFUL INFO.
I SUGGEST THAT 3D PRINTING THE SILICON STEEL SHOULD CUT A LOT OF
MANUFACTURING PROCESSES.

Hi Seychelles,

That would be great but to date I haven't found a Material that can be 3D Printed that comes
close to Silicone Steel performance. Maybe some time soon a 3D Print material will be developed.

The closest scheme so far seems to be the Diode Laser Cutter and Arnold's Thin Magnetic Metal
to create a laminated core. Lots of layers but doable in the Lab on a reasonable budget.

SL

[bistander]

Ref: (B_r)

https://www.arnoldmagnetics.com/wp-content/uploads/2017/10/Designing-with-Thin-Guage-presentation-1.pdf

Read it again for comprehension and Note the square brackets... now, refer again to the B-H Loop and the
Arnold Magnetics Technologies presentation above.

And you still look for "Petty" spelling, etc. stupid shit!

You gotta do better than that - thought you claimed to be an engineer!    Quoting Wikipedia - seriously... LOL

From the Arnold Magnetics Technologies presentation:

• Even when the field reaches zero (H=0), there is still some induction remaining in the[/font]
material. This is called the remanant flux density, or Br.
[/font]
[/font]• To bring the induction in the material down to zero, the H field must be driven past[/font]
zero into a negative value called Hc or HcB -- this is the "coercivity" of the material.[/font]

Thanks SL,

Same information that I learned years ago when I worked with their application engineer. So are you telling that you walk away from that article thinking that remanent induction is the same thing (meaning the same value for a specific material) as its Coercivity, or that B_r = H_c?
O.K.
bi

ps. Noticed something really picky. Where you say "negative value called Hc or HcB -- this is the "coercivity" of the material.[/font]"

It's not H_cB. It's H_cb, I believe. I'm not too familiar with the notation, but did find this example attached. From: https://www.asa-7.top/products.aspx?cname=properties+of+permanent+magnet