Learning Algorithm-Based Offset-Free One-Step Time-Delay Compensation for Power Converter and Motor Drive System Applications

Seok Kyoon Kim, Choon Ki Ahn

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this article, we deal with the one-step time-delay problem in power converter and motor drive system applications implemented by the digital signal processor. For these wide applications, a novel one-step time-delay compensation algorithm is proposed, comprising a standard Luenberger-type observer including a learning algorithm and disturbance observer (DOB). The first novelty is to suggest the learning algorithm automatically determining the observer feedback gains according to the estimation error magnitude. The second is to introduce DOBs with estimation error integrators for removing the steady-state estimation errors, removing the additional adaptive and nonlinear damping compensation terms. The closed-loop observer behaviors are rigorously analyzed to present useful properties. The experimental data obtained using a 3-kW prototype dc-dc boost converter validates the effectiveness of the proposed algorithm.

Original languageEnglish
Article number8825509
Pages (from-to)3789-3796
Number of pages8
JournalIEEE Transactions on Industrial Informatics
Issue number6
Publication statusPublished - 2020 Jun

Bibliographical note

Funding Information:
Manuscript received May 23, 2019; revised July 23, 2019; accepted September 2, 2019. Date of publication September 5, 2019; date of current version February 28, 2020.This work was supported in part by the Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Education under Grant 2018R1A6A1A03026005 and in part by the NRF of Korea through the Ministry of Science, ICT, and Future Planning under Grant NRF-2017R1A1A1A05001325. Paper no. TII-19-1990. (Corresponding author: Choon Ki Ahn.) S.-K. Kim is with the Department of Creative Convergence Engineering, Hanbat National University, Daejeon 341-58, South Korea (e-mail:, lotus45kr@gmail.com).

Publisher Copyright:
© 2005-2012 IEEE.


  • Disturbance observer (DOB)
  • learning algorithm
  • observer
  • one-step time delay
  • stability analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Computer Science Applications
  • Electrical and Electronic Engineering


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