[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

# Re: [femm] Permanent Magnets & Frequency.

- To: <femm@yahoogroups.com>
- Subject: Re: [femm] Permanent Magnets & Frequency.
- From: "Stan, ND" <stan@brerrabbit.screaming.net>
- Date: Thu, 13 Sep 2001 15:02:44 +0100
- Cc: "d.saltrese" <d.saltrese@ntlworld.com>
- References: <137.17cc817.28d19600@aol.com>

Dave, Many thanks, daylight now dawns, Stan. ----- Original Message ----- From: dcm3c@aol.com To: femm@yahoogroups.com Sent: Thursday, September 13, 20015:54 AM Subject: Re: [femm] Permanent Magnets & Frequency. In a message dated 9/11/01 5:07:12 PM Eastern Daylight Time, stan@brerrabbit.screaming.net writes: Help:- When defining a Problem Definition/Frequency of,say 100Hz, then permanent magnets in the magnetic circuit are switched at the same frequency. Is there any work-around for this? Regards Stan Well, the magnetization in thePMs shouldn't (doesn't, which I checked to make sure) vary at the problem's frequency for harmonic problems. For AC problems, the solver treats magnets as just plain blocks of material with the same permeability and conductivity as the permanent magnet, but no magnetization. The reason for this is that if linearity is a good assumption (and it must be, for the harmonic problems in the present formulation to be valid), a problem with things happening at different frequencies can be broken down into a number of single-frequency problems and the results from all the analyses simply superimposed to get the total solution. Dave. -- http://members.aol.com/_ht_a/dcm3c `Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.`

- References:
  - Re: [femm] Permanent Magnets & Frequency.
    - From: dcm3c@aol.com

- Prev by Date: Help Eddy current in three phase induction motor
- Next by Date: Re: [femm] FEMM and LUA
- Previous by thread: Re: [femm] Permanent Magnets & Frequency.
- Next by thread: FEMM and LUA
- Index(es):
  - Date
  - Thread