Elektrotechnisches Institut (ETI)

Easy Current Slope Detection for Low Cost Implementation of the Direct Adaptive Current Control for DC-DC-Converters

  • Autor:

    Andreas Liske, Fabian Stamer, Michael Braun

  • Quelle:

    Energy Conversion Congress and Exposition (ECCE), 2015 IEEE, Montréal QC, Canada

    DOI: 10.1109/ECCE.2015.7309686

  • Datum: 20-24 Sept. 2015
  • "Direct Adaptive Current Control" (DACC) is a completely
    adaptive current control scheme with excellent control quality
    and high dynamics. It is based on the detection of the current
    slopes during each switching state of the utilized inverter
    and identifies the system within one period. One method to
    measure the current slopes is fast oversampling of the current
    followed by a least squares estimator to filter the noise. This is
    well-proven but is difficult at high switching frequencies and
    implies the use of powerful hardware.


    In this paper a new algorithm for the detection of the current
    slopes in DC/DC-Converters is presented that does not need
    oversampling or a complex filter. Its simplicity allows for easy
    implementation in low-cost microcontrollers and operation at
    high switching frequencies.
    The presented algorithm enables
    the implementation of the DACC as a low-cost, high dynamic
    and completely adaptive current control scheme for fastswitching
    DC/DC-Converters.