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Smps Nonlinear Carrier Controller

Discussion in 'Electronic Design' started by D from BC, Mar 8, 2007.

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  1. D from BC

    D from BC Guest

    I found this on:
    http://ece-www.colorado.edu/~maksimov/apec98-3.pdf
    It's on page 7 and a large signal model on page 9.
    The benefit is no power stage damping.

    How does a smps nonlinear carrier controller work?
    Can anyone spare a nonlinear carrier controllers for dummies
    explanation?
    Or a link to some better reading.
    D from BC
     
  2. Terry Given

    Terry Given Guest

    yeah, Dragan did, in an older paper ;)

    IEEE trans power electronics, alas cant remember which one.
    heres an example. Run a DCM flyback converter from a full wave rectified
    supply (no cap).

    run it at constant on time

    know Vin = Lp*dI/dt

    dt = constant

    Lp = constant


    dI = Vin*(dt/ton) = K*Vin

    so input current peaks follow |sin| envelope. voila, control-free PFC

    the NLC method uses an analogous approach. write down the equations for
    input current as a function of Vin, D then solve for D

    Cheers
    Terry
     
  3. D from BC

    D from BC Guest

    Thanks for the kickstart... :)
    D from BC
     
  4. Terry Given

    Terry Given Guest

    If I run across the paper I'll post the reference. Im just too lazy to
    scan thru a gazillion professional comics :)

    Cheers
    Terry
     
  5. Fred Bartoli

    Fred Bartoli Guest

    Terry Given a écrit :
    IIRC the paper is in the same directory, which is (was) browsable (???).
     
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