Comparison of LTI and LTP Models for Stability Analysis of Grid Converters

Jun Bum Kwon; Xiongfei Wang; Frede Blaabjerg; Claus Leth Bak

doi:10.1109/COMPEL.2016.7556769

Comparison of LTI and LTP Models for Stability Analysis of Grid Converters

Jun Bum Kwon, Xiongfei Wang, Frede Blaabjerg, Claus Leth Bak

AAU Energy

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

13 Citations (Scopus)

682 Downloads (Pure)

Abstract

The stability analysis of grid-connected converters have attracted increasing attentions, due to the oscillations arising in wind power plants, micro-grids, and other emerging
power electronics based power systems. The modeling tool of converters thus becomes essential to faithfully reveal oscillations without any hidden regions. This paper presents a detailed comparison of two linearized modeling methods, which are, respectively, developed in the Linear Time-Invariant (LTI) and the Linear Time-Periodic (LTP) frameworks. The LTP model can consider the effect of frequency-coupling dynamics, which are occurred by the time-varying behavior, while the conventional LTI model can not capture this behavior. The advantages and limits of two models are then illustrated with examples. The compared results are verified in the frequency domain and time domain as well.

Original language	English
Title of host publication	Proceedings of the IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL), 2016
Number of pages	8
Publisher	IEEE Press
Publication date	Jun 2016
ISBN (Electronic)	978-1-5090-1815-4
DOIs	https://doi.org/10.1109/COMPEL.2016.7556769
Publication status	Published - Jun 2016
Event	2016 IEEE COMPEL - Trondheim, Norway Duration: 28 Jun 2016 → 1 Jul 2016

Conference

Conference	2016 IEEE COMPEL
Country/Territory	Norway
City	Trondheim
Period	28/06/2016 → 01/07/2016

Keywords

Harmonic State Space
Modeling
LTP Model
Stability Analysis

Access to Document

10.1109/COMPEL.2016.7556769

Comparison of LTI and LTP Models for Stability Analysis of Grid ConvertersAccepted author manuscript, 492 KB

AUB Link

Search for the material in Aalborg University Library's search engine

HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
European Research Counsil
01/02/2013 → 28/02/2018
Project: Research

Cite this

@inproceedings{0cd12746fcb746379b40a153aaaf6b59,

title = "Comparison of LTI and LTP Models for Stability Analysis of Grid Converters",

abstract = "The stability analysis of grid-connected converters have attracted increasing attentions, due to the oscillations arising in wind power plants, micro-grids, and other emergingpower electronics based power systems. The modeling tool of converters thus becomes essential to faithfully reveal oscillations without any hidden regions. This paper presents a detailed comparison of two linearized modeling methods, which are, respectively, developed in the Linear Time-Invariant (LTI) and the Linear Time-Periodic (LTP) frameworks. The LTP model can consider the effect of frequency-coupling dynamics, which are occurred by the time-varying behavior, while the conventional LTI model can not capture this behavior. The advantages and limits of two models are then illustrated with examples. The compared results are verified in the frequency domain and time domain as well.",

keywords = "Harmonic State Space, Modeling, LTP Model, Stability Analysis",

author = "Kwon, {Jun Bum} and Xiongfei Wang and Frede Blaabjerg and Bak, {Claus Leth}",

year = "2016",

month = jun,

doi = "10.1109/COMPEL.2016.7556769",

language = "English",

booktitle = "Proceedings of the IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL), 2016",

publisher = "IEEE Press",

note = "2016 IEEE COMPEL ; Conference date: 28-06-2016 Through 01-07-2016",

}

Comparison of LTI and LTP Models for Stability Analysis of Grid Converters. / Kwon, Jun Bum; Wang, Xiongfei ; Blaabjerg, Frede et al.
Proceedings of the IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL), 2016. IEEE Press, 2016.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Comparison of LTI and LTP Models for Stability Analysis of Grid Converters

AU - Kwon, Jun Bum

AU - Wang, Xiongfei

AU - Blaabjerg, Frede

AU - Bak, Claus Leth

PY - 2016/6

Y1 - 2016/6

N2 - The stability analysis of grid-connected converters have attracted increasing attentions, due to the oscillations arising in wind power plants, micro-grids, and other emergingpower electronics based power systems. The modeling tool of converters thus becomes essential to faithfully reveal oscillations without any hidden regions. This paper presents a detailed comparison of two linearized modeling methods, which are, respectively, developed in the Linear Time-Invariant (LTI) and the Linear Time-Periodic (LTP) frameworks. The LTP model can consider the effect of frequency-coupling dynamics, which are occurred by the time-varying behavior, while the conventional LTI model can not capture this behavior. The advantages and limits of two models are then illustrated with examples. The compared results are verified in the frequency domain and time domain as well.

AB - The stability analysis of grid-connected converters have attracted increasing attentions, due to the oscillations arising in wind power plants, micro-grids, and other emergingpower electronics based power systems. The modeling tool of converters thus becomes essential to faithfully reveal oscillations without any hidden regions. This paper presents a detailed comparison of two linearized modeling methods, which are, respectively, developed in the Linear Time-Invariant (LTI) and the Linear Time-Periodic (LTP) frameworks. The LTP model can consider the effect of frequency-coupling dynamics, which are occurred by the time-varying behavior, while the conventional LTI model can not capture this behavior. The advantages and limits of two models are then illustrated with examples. The compared results are verified in the frequency domain and time domain as well.

KW - Harmonic State Space

KW - Modeling

KW - LTP Model

KW - Stability Analysis

U2 - 10.1109/COMPEL.2016.7556769

DO - 10.1109/COMPEL.2016.7556769

M3 - Article in proceeding

BT - Proceedings of the IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL), 2016

PB - IEEE Press

T2 - 2016 IEEE COMPEL

Y2 - 28 June 2016 through 1 July 2016

ER -

Comparison of LTI and LTP Models for Stability Analysis of Grid Converters

Abstract

Conference

Keywords

Access to Document

AUB Link

Fingerprint

Projects

HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems

Cite this