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Output-Voltage-Tracking Control for Buck Converters Using Variable Convergence Rate Mechanism Without Current Feedback
- Authors
- Kim, Seok-Kyoon; Kim, Ki-Chan; Ahn, Choon Ki
- Issue Date
- 3월-2022
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Convergence; Voltage control; Observers; Target tracking; Buck converters; Manifolds; Load management; Active-damping; buck converter; observers; variable convergence
- Citation
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v.69, no.3, pp.2938 - 2946
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
- Volume
- 69
- Number
- 3
- Start Page
- 2938
- End Page
- 2946
- ISSN
- 0278-0046
- Abstract
- This article aims to accomplish the output voltage tracking task for buck converters without current feedback, diminishing the performance degradation from model-plant mismatches and load variations. The following contributions overcome these difficulties: a) the combination of Luenberger and disturbance observer (DOB) techniques for a parameter-independent voltage-derivative observer; b) the pole-zero cancellation control incorporating the DOB and active-damping injection techniques; and c) the exponential convergence guarantee to the target tracking system subject to the variable convergence rate mechanism. Convincing experimental evidence confirms the effectiveness of proposed tracking control using a prototype 3 kW buck converter control system.
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