Repetitive control of power conversion system from a distributed generator to the utility grid

J. Liang; T. C. Green; G. Weiss; Q. C. Zhong

Repetitive control of power conversion system from a distributed generator to the utility grid

J. Liang^*, T. C. Green, G. Weiss, Q. C. Zhong

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

Abstract

An AC-DC-AC converter is employed as an interface between a distributed generator and the utility grid. A corresponding control system for the converter is proposed to offer good waveform quality of a local grid where a large proportion of the load is non-linear, and to regulate the exported power as well. The control system consists of two nested loops. In the inner loop, a voltage controller based on repetitive control and H^∞ control is used to achieve good waveform tracking. Decoupling control is used in the outer loop to control active power (P) and reactive power (Q) accurately and independently. A PLL (phase-locked loop) is used to synchronise the conversion system. It also identifies the fundamental frequency voltage magnitude of the utility grid and generates quadrature voltage signals which are used for the control system.

Original language	English
Pages	13-18
Number of pages	6
State	Published - 2002
Externally published	Yes
Event	Proceedings of the 2002 IEEE International Conference on Control Applications - Glasgow, United Kingdom Duration: 18 Sep 2002 → 20 Sep 2002

Conference

Conference	Proceedings of the 2002 IEEE International Conference on Control Applications
Country/Territory	United Kingdom
City	Glasgow
Period	18/09/02 → 20/09/02

Keywords

Grid connection
H design
Power control
Power conversion
Repetitive control

Cite this

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abstract = "An AC-DC-AC converter is employed as an interface between a distributed generator and the utility grid. A corresponding control system for the converter is proposed to offer good waveform quality of a local grid where a large proportion of the load is non-linear, and to regulate the exported power as well. The control system consists of two nested loops. In the inner loop, a voltage controller based on repetitive control and H∞ control is used to achieve good waveform tracking. Decoupling control is used in the outer loop to control active power (P) and reactive power (Q) accurately and independently. A PLL (phase-locked loop) is used to synchronise the conversion system. It also identifies the fundamental frequency voltage magnitude of the utility grid and generates quadrature voltage signals which are used for the control system.",

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author = "J. Liang and Green, {T. C.} and G. Weiss and Zhong, {Q. C.}",

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AU - Liang, J.

AU - Green, T. C.

AU - Weiss, G.

AU - Zhong, Q. C.

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Y1 - 2002

N2 - An AC-DC-AC converter is employed as an interface between a distributed generator and the utility grid. A corresponding control system for the converter is proposed to offer good waveform quality of a local grid where a large proportion of the load is non-linear, and to regulate the exported power as well. The control system consists of two nested loops. In the inner loop, a voltage controller based on repetitive control and H∞ control is used to achieve good waveform tracking. Decoupling control is used in the outer loop to control active power (P) and reactive power (Q) accurately and independently. A PLL (phase-locked loop) is used to synchronise the conversion system. It also identifies the fundamental frequency voltage magnitude of the utility grid and generates quadrature voltage signals which are used for the control system.

AB - An AC-DC-AC converter is employed as an interface between a distributed generator and the utility grid. A corresponding control system for the converter is proposed to offer good waveform quality of a local grid where a large proportion of the load is non-linear, and to regulate the exported power as well. The control system consists of two nested loops. In the inner loop, a voltage controller based on repetitive control and H∞ control is used to achieve good waveform tracking. Decoupling control is used in the outer loop to control active power (P) and reactive power (Q) accurately and independently. A PLL (phase-locked loop) is used to synchronise the conversion system. It also identifies the fundamental frequency voltage magnitude of the utility grid and generates quadrature voltage signals which are used for the control system.

KW - Grid connection

KW - H design

KW - Power control

KW - Power conversion

KW - Repetitive control

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T2 - Proceedings of the 2002 IEEE International Conference on Control Applications

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Repetitive control of power conversion system from a distributed generator to the utility grid

Abstract

Conference

Keywords

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