Disturbance-observer-based model predictive control for output voltage regulation of three-phase inverter for uninterruptible-power-supply applications

Seok Kyoon Kim; Chang Reung Park; Tae Woong Yoon; Young Il Lee

doi:10.1016/j.ejcon.2015.02.004

Disturbance-observer-based model predictive control for output voltage regulation of three-phase inverter for uninterruptible-power-supply applications

Seok Kyoon Kim, Chang Reung Park, Tae Woong Yoon, Young Il Lee

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

39 Citations (Scopus)

Abstract

In this paper, an offset-free model predictive control (MPC) method is suggested for regulating the output voltage of a three-phase inverter for an uninterruptible power supply (UPS) application through the multivariable design approach. A reference state, which satisfies the control objective of output voltage regulation, is derived. In addition, a one-step-ahead cost index penalizing the state tracking error is used by the proposed MPC. A disturbance observer (DOB) is used to compensate for the errors caused by uncertainties. Online optimization considering the input constraint of the inverter system is very simple, and no numerical method is required. It is shown that the proposed MPC makes the closed-loop system globally asymptotically stable in the presence of input constraints. The closed-loop performance is experimentally evaluated when resistive and resistive-inductive loads are used.

Original language	English
Pages (from-to)	71-83
Number of pages	13
Journal	European Journal of Control
Volume	23
DOIs	https://doi.org/10.1016/j.ejcon.2015.02.004
Publication status	Published - 2015 May 1

Bibliographical note

Publisher Copyright:
© 2015 European Control Association.

Keywords

Disturbance observer
Input constraints
Model predictive control
Three-phase inverter

ASJC Scopus subject areas

General Engineering

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10.1016/j.ejcon.2015.02.004

Cite this

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title = "Disturbance-observer-based model predictive control for output voltage regulation of three-phase inverter for uninterruptible-power-supply applications",

abstract = "In this paper, an offset-free model predictive control (MPC) method is suggested for regulating the output voltage of a three-phase inverter for an uninterruptible power supply (UPS) application through the multivariable design approach. A reference state, which satisfies the control objective of output voltage regulation, is derived. In addition, a one-step-ahead cost index penalizing the state tracking error is used by the proposed MPC. A disturbance observer (DOB) is used to compensate for the errors caused by uncertainties. Online optimization considering the input constraint of the inverter system is very simple, and no numerical method is required. It is shown that the proposed MPC makes the closed-loop system globally asymptotically stable in the presence of input constraints. The closed-loop performance is experimentally evaluated when resistive and resistive-inductive loads are used.",

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AU - Kim, Seok Kyoon

AU - Park, Chang Reung

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AU - Lee, Young Il

PY - 2015/5/1

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N2 - In this paper, an offset-free model predictive control (MPC) method is suggested for regulating the output voltage of a three-phase inverter for an uninterruptible power supply (UPS) application through the multivariable design approach. A reference state, which satisfies the control objective of output voltage regulation, is derived. In addition, a one-step-ahead cost index penalizing the state tracking error is used by the proposed MPC. A disturbance observer (DOB) is used to compensate for the errors caused by uncertainties. Online optimization considering the input constraint of the inverter system is very simple, and no numerical method is required. It is shown that the proposed MPC makes the closed-loop system globally asymptotically stable in the presence of input constraints. The closed-loop performance is experimentally evaluated when resistive and resistive-inductive loads are used.

AB - In this paper, an offset-free model predictive control (MPC) method is suggested for regulating the output voltage of a three-phase inverter for an uninterruptible power supply (UPS) application through the multivariable design approach. A reference state, which satisfies the control objective of output voltage regulation, is derived. In addition, a one-step-ahead cost index penalizing the state tracking error is used by the proposed MPC. A disturbance observer (DOB) is used to compensate for the errors caused by uncertainties. Online optimization considering the input constraint of the inverter system is very simple, and no numerical method is required. It is shown that the proposed MPC makes the closed-loop system globally asymptotically stable in the presence of input constraints. The closed-loop performance is experimentally evaluated when resistive and resistive-inductive loads are used.

KW - Disturbance observer

KW - Input constraints

KW - Model predictive control

KW - Three-phase inverter

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Disturbance-observer-based model predictive control for output voltage regulation of three-phase inverter for uninterruptible-power-supply applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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