In this paper, a robust output voltage-tracking algorithm is proposed for dc/dc boost power conversion systems based on a variable invariant manifold. A systematic multivariable approach, considering not only nonlinearity but also the parametric uncertainties, is used for deriving the control law. The proposed method has two features. First, a variable cut-off frequency algorithm is constructed to automatically adjust the invariant manifold, improving the transient output voltage-tracking performance. Second, nonlinear disturbance observers are introduced to enable the control law to exponentially recover the desirable tracking performance without any offset errors in the variable invariant manifold. The performance of the proposed technique is experimentally confirmed with a 3-kW dc/dc boost power conversion system.
|Number of pages||8|
|Journal||IEEE Transactions on Systems, Man, and Cybernetics: Systems|
|Publication status||Published - 2021 Mar|
Bibliographical noteFunding Information:
Manuscript received December 27, 2018; accepted February 9, 2019. Date of publication March 5, 2019; date of current version February 17, 2021. This work was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education under Grant 2018R1A6A1A03026005, and in part by the NRF through the Ministry of Science, ICT and Future Planning under Grant NRF-2017R1A1A1A05001325. This paper was recommended by Associate Editor L. L. Lai. (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: email@example.com).
© 2013 IEEE.
- DC/DC boost power conversion system
- disturbance observer (DOB)
- invariant manifold
- output voltage control
- variable cut-off frequency algorithm
ASJC Scopus subject areas
- Control and Systems Engineering
- Human-Computer Interaction
- Computer Science Applications
- Electrical and Electronic Engineering