phase voltage

Discussion in 'Electrical Engineering' started by johnoshea19@gmail.com, Aug 17, 2013.

  1. Guest

    If the following equation gives the phase voltage for a PMAC when the phase current (Iph) is in phase with the back emf (Eph)

    Vph = (Eph + Rs*Iph) + j*2*pi*frequency in hertz*Ls*Iph

    how would equation change when the Iph is 180 degrees out of phase with the back emf?
     
    , Aug 17, 2013
    #1
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  2. Don Kelly Guest

    On 17/08/2013 7:33 AM, wrote:
    > If the following equation gives the phase voltage for a PMAC when the phase current (Iph) is in phase with the back emf (Eph)
    >
    > Vph = (Eph + Rs*Iph) + j*2*pi*frequency in hertz*Ls*Iph
    >
    > how would equation change when the Iph is 180 degrees out of phase with the back emf?
    >

    replace Iph by -Iph or + by -


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    Don Kelly
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    Don Kelly, Aug 18, 2013
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