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# RE: [femm] Power Losses

- To: <femm@yahoogroups.com>
- Subject: RE: [femm] Power Losses
- From: "Lovrenc Gasparin" <lovrencg@email.si>
- Date: Fri, 9 Aug 2002 16:24:40 +0200
- Importance: Normal
- In-reply-to: <3D53C58E.30300@ieee.org>

    Hi!

    Yes! In a.c. analyses all valus (current) must be in RMS. They are
    represented as vector, bay Real and Imaginar component.

    Lovrenc

    -----Izvorno sporocilo-----
    Od: brian_hawes [mailto:b.hawes1@physics.ox.ac.uk]
    Poslano: 9. avgust 2002 15:37
    Za: femm mailing list
    Zadeva: [femm] Power Losses

    I have been using FEMM 3.1 to calculate r.f. losses in
    solenoids. I made each turn a separate circuit, and defined
    a current of 1-Ampere. I started by assuming that with I=1,
    I2*R=R, and hence P=R. I found I was getting resistance
    values ~ 1/2 what I expected. It finally dawned that with
    a.c. analyses, the defined current must be treated as an
    r.m.s value. Can someone confirm I am right, or have I
    dropped a factor two somewhere else?

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- References:
  - Power Losses
    - From: "brian_hawes" <b.hawes1@physics.ox.ac.uk>

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