Interlink Converter Controller Design based on System Identification of DC Sub-Grid Model in Hybrid AC/DC Microgrid

Faya Safirra Adi; Hwachang Song; Jung Su Kim

doi:10.1016/j.ifacol.2019.08.153

Interlink Converter Controller Design based on System Identification of DC Sub-Grid Model in Hybrid AC/DC Microgrid

Faya Safirra Adi
, Hwachang Song
, Jung Su Kim

Dept. of Electrical and Information Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Conference article › peer-review

11 Scopus citations

Abstract

This paper proposes a method to regulate the voltage output in DC sub-grid of a hybrid AC/DC microgrid by designing a model-based controller for bi-directional interlink converter (IC). A linear time-invariant (LTI) model representing the DC sub-grid is constructed by applying a step response in the IC. Then, the model-based controller of IC is made by forming a closed-loop system based on the obtained LTI model and a PID controller. To get proper values of PID gain in the closed loop system, an optimization problem needs to be solved. The result shows that using the model-based controller and PID gains from optimization, the modified system has better performance than the original one.

Original language	English
Pages (from-to)	45-50
Number of pages	6
Journal	IFAC-PapersOnLine
Volume	52
Issue number	4
DOIs	https://doi.org/10.1016/j.ifacol.2019.08.153
State	Published - 2019
Event	IFAC Workshop on Control of Smart Grid and Renewable Energy Systems, CSGRES 2019 - Jeju, Korea, Republic of Duration: 10 Jun 2019 → 12 Jun 2019

Keywords

hybrid microgrid
interlink converter
PID control
system identification
voltage regulation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ifacol.2019.08.153

Cite this

@article{9a94f80fb79541b6b23c5d972b548df1,

title = "Interlink Converter Controller Design based on System Identification of DC Sub-Grid Model in Hybrid AC/DC Microgrid",

abstract = "This paper proposes a method to regulate the voltage output in DC sub-grid of a hybrid AC/DC microgrid by designing a model-based controller for bi-directional interlink converter (IC). A linear time-invariant (LTI) model representing the DC sub-grid is constructed by applying a step response in the IC. Then, the model-based controller of IC is made by forming a closed-loop system based on the obtained LTI model and a PID controller. To get proper values of PID gain in the closed loop system, an optimization problem needs to be solved. The result shows that using the model-based controller and PID gains from optimization, the modified system has better performance than the original one.",

keywords = "hybrid microgrid, interlink converter, PID control, system identification, voltage regulation",

author = "Adi, \{Faya Safirra\} and Hwachang Song and Kim, \{Jung Su\}",

note = "Publisher Copyright: {\textcopyright} 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.; IFAC Workshop on Control of Smart Grid and Renewable Energy Systems, CSGRES 2019 ; Conference date: 10-06-2019 Through 12-06-2019",

year = "2019",

doi = "10.1016/j.ifacol.2019.08.153",

language = "English",

volume = "52",

pages = "45--50",

journal = "IFAC-PapersOnLine",

issn = "2405-8963",

number = "4",

}

TY - JOUR

T1 - Interlink Converter Controller Design based on System Identification of DC Sub-Grid Model in Hybrid AC/DC Microgrid

AU - Adi, Faya Safirra

AU - Song, Hwachang

AU - Kim, Jung Su

N1 - Publisher Copyright: © 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

PY - 2019

Y1 - 2019

N2 - This paper proposes a method to regulate the voltage output in DC sub-grid of a hybrid AC/DC microgrid by designing a model-based controller for bi-directional interlink converter (IC). A linear time-invariant (LTI) model representing the DC sub-grid is constructed by applying a step response in the IC. Then, the model-based controller of IC is made by forming a closed-loop system based on the obtained LTI model and a PID controller. To get proper values of PID gain in the closed loop system, an optimization problem needs to be solved. The result shows that using the model-based controller and PID gains from optimization, the modified system has better performance than the original one.

AB - This paper proposes a method to regulate the voltage output in DC sub-grid of a hybrid AC/DC microgrid by designing a model-based controller for bi-directional interlink converter (IC). A linear time-invariant (LTI) model representing the DC sub-grid is constructed by applying a step response in the IC. Then, the model-based controller of IC is made by forming a closed-loop system based on the obtained LTI model and a PID controller. To get proper values of PID gain in the closed loop system, an optimization problem needs to be solved. The result shows that using the model-based controller and PID gains from optimization, the modified system has better performance than the original one.

KW - hybrid microgrid

KW - interlink converter

KW - PID control

KW - system identification

KW - voltage regulation

UR - https://www.scopus.com/pages/publications/85076180173

U2 - 10.1016/j.ifacol.2019.08.153

DO - 10.1016/j.ifacol.2019.08.153

M3 - Conference article

AN - SCOPUS:85076180173

SN - 2405-8963

VL - 52

SP - 45

EP - 50

JO - IFAC-PapersOnLine

JF - IFAC-PapersOnLine

IS - 4

T2 - IFAC Workshop on Control of Smart Grid and Renewable Energy Systems, CSGRES 2019

Y2 - 10 June 2019 through 12 June 2019

ER -

Interlink Converter Controller Design based on System Identification of DC Sub-Grid Model in Hybrid AC/DC Microgrid

Abstract

Keywords

UN SDGs

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