Time-optimal input-shaping control of a saturating inductor DC-DC converter

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Department of Electrical and Computer Engineering; Department of Mechanical Engineering-Engineering Mechanics


This paper compares the step-change-in-load switching behavior of a linear inductor boost converter circuit to that of a boost converter containing a non-linear or saturable inductor. The transition time between load states is minimized when the converter switch is controlled to be fully on or fully off (bang-bang) for pre-determined periods of time. The results show the saturating inductor converter switches nearly three times faster, is approximately an order of magnitude smaller in size, exhibits less load voltage droop during load transition and has lower inductor (copper) losses. These benefits however, come at the cost of higher peak switching currents.

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©2018 IEEE. Publisher's version of record: https://doi.org/10.1109/COMPEL.2018.8459914

Publication Title

2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL)