Current Sensor-Free Output-Feedback Voltage Control for DC/DC Converters via Critical Damping Injection Technique for Converter-Fed Servo System Applications

Seok Kyoon Kim; Sun Lim; Choon Ki Ahn

doi:10.1109/TIE.2023.3260361

Current Sensor-Free Output-Feedback Voltage Control for DC/DC Converters via Critical Damping Injection Technique for Converter-Fed Servo System Applications

Seok Kyoon Kim, Sun Lim, Choon Ki Ahn

Research output: Contribution to journal › Article › peer-review

Abstract

This study proposes an observer-based multiloop output-feedback system that regulates the output dc-link voltage of dc/dc converters to the desired value to lower the system model dependence level. There are a few features: 1) the outer loop injecting the nonlinear active damping to ensure the critically damped output voltage response; 2) a model-independent output voltage derivative observer facilitates the inner loop and eliminates the need for complex matrix calculations for tuning the estimation performance; and 3) the use of a pole-zero cancellation acceleration error stabilizer for the inner loop helps maintain the targeted closed-loop performance. The experimental study adopts a 420-W brushless dc motor dynamo system as the load for the prototype 600-W bidirectional converter controlled using the proposed solution.

Original language	English
Pages (from-to)	1906-1916
Number of pages	11
Journal	IEEE Transactions on Industrial Electronics
Volume	71
Issue number	2
DOIs	https://doi.org/10.1109/TIE.2023.3260361
Publication status	Accepted/In press - 2023

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) under Grant NRF-2021R1C1C1004380 and Grant NRF-2020R1A2C1005449), and in part by the Technology Innovation Program funded By the Ministry of Trade, Industry & Energy(MOTIE, Korea) under Grant 20009017.

Publisher Copyright:
© 1982-2012 IEEE.

Keywords

Critical damping
current sensor-free
dc/dc converter
observer
output-feedback system

ASJC Scopus subject areas

Electrical and Electronic Engineering
Control and Systems Engineering

Access to Document

10.1109/TIE.2023.3260361

Cite this

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title = "Current Sensor-Free Output-Feedback Voltage Control for DC/DC Converters via Critical Damping Injection Technique for Converter-Fed Servo System Applications",

abstract = "This study proposes an observer-based multiloop output-feedback system that regulates the output dc-link voltage of dc/dc converters to the desired value to lower the system model dependence level. There are a few features: 1) the outer loop injecting the nonlinear active damping to ensure the critically damped output voltage response; 2) a model-independent output voltage derivative observer facilitates the inner loop and eliminates the need for complex matrix calculations for tuning the estimation performance; and 3) the use of a pole-zero cancellation acceleration error stabilizer for the inner loop helps maintain the targeted closed-loop performance. The experimental study adopts a 420-W brushless dc motor dynamo system as the load for the prototype 600-W bidirectional converter controlled using the proposed solution.",

keywords = "Critical damping, current sensor-free, dc/dc converter, observer, output-feedback system",

author = "Kim, {Seok Kyoon} and Sun Lim and Ahn, {Choon Ki}",

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N1 - Funding Information: This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) under Grant NRF-2021R1C1C1004380 and Grant NRF-2020R1A2C1005449), and in part by the Technology Innovation Program funded By the Ministry of Trade, Industry & Energy(MOTIE, Korea) under Grant 20009017. Publisher Copyright: © 1982-2012 IEEE.

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AB - This study proposes an observer-based multiloop output-feedback system that regulates the output dc-link voltage of dc/dc converters to the desired value to lower the system model dependence level. There are a few features: 1) the outer loop injecting the nonlinear active damping to ensure the critically damped output voltage response; 2) a model-independent output voltage derivative observer facilitates the inner loop and eliminates the need for complex matrix calculations for tuning the estimation performance; and 3) the use of a pole-zero cancellation acceleration error stabilizer for the inner loop helps maintain the targeted closed-loop performance. The experimental study adopts a 420-W brushless dc motor dynamo system as the load for the prototype 600-W bidirectional converter controlled using the proposed solution.

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KW - current sensor-free

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Current Sensor-Free Output-Feedback Voltage Control for DC/DC Converters via Critical Damping Injection Technique for Converter-Fed Servo System Applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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