Design of state-feedback controller for a single-phase grid-connected Siwakoti-h inverter with LCL filter

Begh, MAW; Liegmann, E; Mahajan, A; Palanisamy, A; Siwakoti, YP; Karamanakos, P; Abdelrahem, M; Kennel, R

Design of state-feedback controller for a single-phase grid-connected Siwakoti-h inverter with LCL filter

Begh, MAW Liegmann, E Mahajan, A Palanisamy, A Siwakoti, YP Karamanakos, P Abdelrahem, M Kennel, R

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Publisher:: IEEE
Publication Type:: Conference Proceeding
Citation:: PCIM Europe Conference Proceedings, 2019, pp. 1587-1594
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Begh, MAW
dc.contributor.author	Liegmann, E
dc.contributor.author	Mahajan, A
dc.contributor.author	Palanisamy, A
dc.contributor.author	Siwakoti, YP
dc.contributor.author	Karamanakos, P
dc.contributor.author	Abdelrahem, M
dc.contributor.author	Kennel, R
dc.date	2019-05-07
dc.date.accessioned	2020-06-07T19:15:38Z
dc.date.available	2020-06-07T19:15:38Z
dc.date.issued	2019-01-01
dc.identifier.citation	PCIM Europe Conference Proceedings, 2019, pp. 1587-1594
dc.identifier.isbn	9783800749386
dc.identifier.issn	2191-3358
dc.identifier.uri	http://hdl.handle.net/10453/141184
dc.description.abstract	© VDE VERLAG GMBH · Berlin · Offenbach. Grid-tied transformerless inverters for photovoltaic (PV) systems have attained a prominent share in the distributed power generation applications on both the domestic and utility scale. This arises the need of a transformerless inverter with less hardware components and complexity. This paper presents a state-feedback current controller (SFCC) for a flying-capacitor based transformerless inverter (Siwakoti-H topology). Compared to the conventional proportional-integral (PI) based control, the state-feedback current control provides a better dynamic performance for a single-phase grid-tied converter equipped with an LCL filter. The controller is designed using pole placement to set the dominant behavior of the converter, which actively damps the resonant frequency of the LCL filter. The controller is extended using dc voltage feedforward compensation (DVFC) to maintain the voltage ripple of the flying capacitor within the limits, and an integral state for improved disturbance rejection. Simulation results illustrate the steady-state and dynamic performance of the controller as well as the inherent damping of the LCL filter resonance. Experimental results are presented to verify the steady-state operation of the system.
dc.language	en
dc.publisher	IEEE
dc.relation.ispartof	PCIM Europe Conference Proceedings
dc.relation.ispartof	International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
dc.rights	info:eu-repo/semantics/closedAccess
dc.rights	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.title	Design of state-feedback controller for a single-phase grid-connected Siwakoti-h inverter with LCL filter
dc.type	Conference Proceeding
utslib.location.activity	Nuremberg, Germany
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-06-07T19:15:32Z
pubs.finish-date	2019-05-09
pubs.place-of-publication	Piscataway, USA
pubs.publication-status	Published
pubs.start-date	2019-05-07
utslib.start-page	1587
dc.location	Piscataway, USA

Abstract:

© VDE VERLAG GMBH · Berlin · Offenbach. Grid-tied transformerless inverters for photovoltaic (PV) systems have attained a prominent share in the distributed power generation applications on both the domestic and utility scale. This arises the need of a transformerless inverter with less hardware components and complexity. This paper presents a state-feedback current controller (SFCC) for a flying-capacitor based transformerless inverter (Siwakoti-H topology). Compared to the conventional proportional-integral (PI) based control, the state-feedback current control provides a better dynamic performance for a single-phase grid-tied converter equipped with an LCL filter. The controller is designed using pole placement to set the dominant behavior of the converter, which actively damps the resonant frequency of the LCL filter. The controller is extended using dc voltage feedforward compensation (DVFC) to maintain the voltage ripple of the flying capacitor within the limits, and an integral state for improved disturbance rejection. Simulation results illustrate the steady-state and dynamic performance of the controller as well as the inherent damping of the LCL filter resonance. Experimental results are presented to verify the steady-state operation of the system.

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http://hdl.handle.net/10453/141184