Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs

Khalil Saad A. Algarny; Mahinda Vilathgamuwa; Mark Broadmeadow; Wooyoung Choi

doi:10.1109/ISIE45063.2020.9152267

Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs

Khalil Saad A. Algarny
, Mahinda Vilathgamuwa
, Mark Broadmeadow
, Wooyoung Choi

Division of Electronic Engineering

Queensland University of Technology

Research output: Contribution to conference › Conference paper › peer-review

5 Scopus citations

Abstract

This project aims at designing an efficient and economical photovoltaic system architecture. The PV arrays are broken into groups. Each group is connected to one of the H-Bridges in a three-phase based multilevel inverter. Each H-bridge is controlled by an independent MPPT block in conjunction with the grid controller. The cost is then reduced by eliminating the PV-side current and voltage sensors in each H-bridge. This is done by properly tracking the PV string power using the ac-side sensors. Estimating both PV current and voltage is important to have a plug and play capability for PV strings in the conventional PV grid-connected systems. The control of the reference dc voltages is based on separate Voltage-Oriented Control (VOC). The phase-unbalanced issue caused by partial shading might occur on the PV modules. Therefore, the zero-sequence injection is done by circulating energy among the H-bridges from each phase in the same hierarchal order.

Original language	English
Title of host publication	2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	740-743
Number of pages	4
ISBN (Electronic)	9781728156354
DOIs	https://doi.org/10.1109/ISIE45063.2020.9152267
State	Published - 2020.06
Event	29th IEEE International Symposium on Industrial Electronics, ISIE 2020 - Delft, Netherlands Duration: 2020.06.17 → 2020.06.19

Publication series

Name	IEEE International Symposium on Industrial Electronics
Volume	2020-June

Conference

Conference	29th IEEE International Symposium on Industrial Electronics, ISIE 2020
Country/Territory	Netherlands
City	Delft
Period	20.06.17 → 20.06.19

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

capacitor voltage estimation
Cascaded H-bridge converter
PV current estimation
PV grid-connected systems

Quacquarelli Symonds(QS) Subject Topics

Computer Science & Information Systems
Engineering - Electrical & Electronic
Engineering - Petroleum

Access to Document

10.1109/ISIE45063.2020.9152267

Cite this

Algarny, K. S. A., Vilathgamuwa, M., Broadmeadow, M., & Choi, W. (2020). Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs. In 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings (pp. 740-743). Article 9152267 (IEEE International Symposium on Industrial Electronics; Vol. 2020-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIE45063.2020.9152267

Algarny, Khalil Saad A. ; Vilathgamuwa, Mahinda ; Broadmeadow, Mark et al. / Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs. 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 740-743 (IEEE International Symposium on Industrial Electronics).

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title = "Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs",

abstract = "This project aims at designing an efficient and economical photovoltaic system architecture. The PV arrays are broken into groups. Each group is connected to one of the H-Bridges in a three-phase based multilevel inverter. Each H-bridge is controlled by an independent MPPT block in conjunction with the grid controller. The cost is then reduced by eliminating the PV-side current and voltage sensors in each H-bridge. This is done by properly tracking the PV string power using the ac-side sensors. Estimating both PV current and voltage is important to have a plug and play capability for PV strings in the conventional PV grid-connected systems. The control of the reference dc voltages is based on separate Voltage-Oriented Control (VOC). The phase-unbalanced issue caused by partial shading might occur on the PV modules. Therefore, the zero-sequence injection is done by circulating energy among the H-bridges from each phase in the same hierarchal order.",

keywords = "capacitor voltage estimation, Cascaded H-bridge converter, PV current estimation, PV grid-connected systems",

author = "Algarny, \{Khalil Saad A.\} and Mahinda Vilathgamuwa and Mark Broadmeadow and Wooyoung Choi",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 29th IEEE International Symposium on Industrial Electronics, ISIE 2020 ; Conference date: 17-06-2020 Through 19-06-2020",

year = "2020",

month = jun,

doi = "10.1109/ISIE45063.2020.9152267",

language = "English",

series = "IEEE International Symposium on Industrial Electronics",

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Algarny, KSA, Vilathgamuwa, M, Broadmeadow, M & Choi, W 2020, Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs. in 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings., 9152267, IEEE International Symposium on Industrial Electronics, vol. 2020-June, Institute of Electrical and Electronics Engineers Inc., pp. 740-743, 29th IEEE International Symposium on Industrial Electronics, ISIE 2020, Delft, Netherlands, 20.06.17. https://doi.org/10.1109/ISIE45063.2020.9152267

Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs. / Algarny, Khalil Saad A.; Vilathgamuwa, Mahinda; Broadmeadow, Mark et al.
2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. p. 740-743 9152267 (IEEE International Symposium on Industrial Electronics; Vol. 2020-June).

Research output: Contribution to conference › Conference paper › peer-review

TY - GEN

T1 - Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs

AU - Algarny, Khalil Saad A.

AU - Vilathgamuwa, Mahinda

AU - Broadmeadow, Mark

AU - Choi, Wooyoung

PY - 2020/6

Y1 - 2020/6

N2 - This project aims at designing an efficient and economical photovoltaic system architecture. The PV arrays are broken into groups. Each group is connected to one of the H-Bridges in a three-phase based multilevel inverter. Each H-bridge is controlled by an independent MPPT block in conjunction with the grid controller. The cost is then reduced by eliminating the PV-side current and voltage sensors in each H-bridge. This is done by properly tracking the PV string power using the ac-side sensors. Estimating both PV current and voltage is important to have a plug and play capability for PV strings in the conventional PV grid-connected systems. The control of the reference dc voltages is based on separate Voltage-Oriented Control (VOC). The phase-unbalanced issue caused by partial shading might occur on the PV modules. Therefore, the zero-sequence injection is done by circulating energy among the H-bridges from each phase in the same hierarchal order.

AB - This project aims at designing an efficient and economical photovoltaic system architecture. The PV arrays are broken into groups. Each group is connected to one of the H-Bridges in a three-phase based multilevel inverter. Each H-bridge is controlled by an independent MPPT block in conjunction with the grid controller. The cost is then reduced by eliminating the PV-side current and voltage sensors in each H-bridge. This is done by properly tracking the PV string power using the ac-side sensors. Estimating both PV current and voltage is important to have a plug and play capability for PV strings in the conventional PV grid-connected systems. The control of the reference dc voltages is based on separate Voltage-Oriented Control (VOC). The phase-unbalanced issue caused by partial shading might occur on the PV modules. Therefore, the zero-sequence injection is done by circulating energy among the H-bridges from each phase in the same hierarchal order.

KW - capacitor voltage estimation

KW - Cascaded H-bridge converter

KW - PV current estimation

KW - PV grid-connected systems

UR - https://www.scopus.com/pages/publications/85089554273

U2 - 10.1109/ISIE45063.2020.9152267

DO - 10.1109/ISIE45063.2020.9152267

M3 - Conference paper

AN - SCOPUS:85089554273

T3 - IEEE International Symposium on Industrial Electronics

SP - 740

EP - 743

BT - 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 29th IEEE International Symposium on Industrial Electronics, ISIE 2020

Y2 - 17 June 2020 through 19 June 2020

ER -

Algarny KSA, Vilathgamuwa M, Broadmeadow M, Choi W. Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs. In 2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2020. p. 740-743. 9152267. (IEEE International Symposium on Industrial Electronics). doi: 10.1109/ISIE45063.2020.9152267

Independent Voltage Oriented DC-Side Sensorless Control of Three-Phase Cascaded H-bridge Multilevel Inverter with Decentralized MPPTs

Abstract

Publication series

Conference

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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Cite this