Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems

Javier Echeverria, Samir Kouro, Marcelo Perez, Haitham Abu-Rub

Research output: Chapter in Book/Report/Conference proceedingConference contribution

56 Citations (Scopus)

Abstract

Large-scale grid-connected photovoltaic (PV) energy conversion systems operate at low voltage and are interfaced to medium-voltage and high-voltage ac utility grids through one or two step-up voltage transformer stages. In addition, the power conversion is performed with either a single stage dc-ac converter (central inverter) or a two stage dc-dc/dc-ac (string or multi-string inverter). However, prime solar irradiation regions in the world are not always located close to available utility lines, and in some cases are far away from main consumption areas. Furthermore, long overhead transmissions lines (>400km) and underwater transmission lines above 70kM, HVDC has become the most cost-effective solution. Among HVDC technologies, voltage source converter based HVDC system, mainly based on the modular multilevel converter (MMC), have become popular due to smaller filters, multi-network connection and decoupling of active and reactive power. This paper explores a new large-scale PV plant configuration based on a dc-dc stage interfaced directly to an MMC based HVDC system. Since PV systems are dc by nature, the proposed solution has several advantages, particularly if combined directly with the HVDC power station. Some power circuit topologies are presented, including their corresponding control schemes. Simulation results are presented to provide a preliminary evaluation on the operation and performance of the proposed system.

Original languageEnglish
Title of host publicationProceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
Pages6999-7005
Number of pages7
DOIs
Publication statusPublished - 2013
Event39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 - Vienna, Austria
Duration: 10 Nov 201314 Nov 2013

Other

Other39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
CountryAustria
CityVienna
Period10/11/1314/11/13

Fingerprint

DC-DC converters
Electric potential
Electric lines
Electric network topology
Reactive power
Energy conversion
Irradiation
Costs

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Echeverria, J., Kouro, S., Perez, M., & Abu-Rub, H. (2013). Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems. In Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society (pp. 6999-7005). [6700293] https://doi.org/10.1109/IECON.2013.6700293

Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems. / Echeverria, Javier; Kouro, Samir; Perez, Marcelo; Abu-Rub, Haitham.

Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. 2013. p. 6999-7005 6700293.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Echeverria, J, Kouro, S, Perez, M & Abu-Rub, H 2013, Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems. in Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society., 6700293, pp. 6999-7005, 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013, Vienna, Austria, 10/11/13. https://doi.org/10.1109/IECON.2013.6700293
Echeverria J, Kouro S, Perez M, Abu-Rub H. Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems. In Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. 2013. p. 6999-7005. 6700293 https://doi.org/10.1109/IECON.2013.6700293
Echeverria, Javier ; Kouro, Samir ; Perez, Marcelo ; Abu-Rub, Haitham. / Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems. Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. 2013. pp. 6999-7005
@inproceedings{b45ea8c0b50344b4a44aa884ddb9de6d,
title = "Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems",
abstract = "Large-scale grid-connected photovoltaic (PV) energy conversion systems operate at low voltage and are interfaced to medium-voltage and high-voltage ac utility grids through one or two step-up voltage transformer stages. In addition, the power conversion is performed with either a single stage dc-ac converter (central inverter) or a two stage dc-dc/dc-ac (string or multi-string inverter). However, prime solar irradiation regions in the world are not always located close to available utility lines, and in some cases are far away from main consumption areas. Furthermore, long overhead transmissions lines (>400km) and underwater transmission lines above 70kM, HVDC has become the most cost-effective solution. Among HVDC technologies, voltage source converter based HVDC system, mainly based on the modular multilevel converter (MMC), have become popular due to smaller filters, multi-network connection and decoupling of active and reactive power. This paper explores a new large-scale PV plant configuration based on a dc-dc stage interfaced directly to an MMC based HVDC system. Since PV systems are dc by nature, the proposed solution has several advantages, particularly if combined directly with the HVDC power station. Some power circuit topologies are presented, including their corresponding control schemes. Simulation results are presented to provide a preliminary evaluation on the operation and performance of the proposed system.",
author = "Javier Echeverria and Samir Kouro and Marcelo Perez and Haitham Abu-Rub",
year = "2013",
doi = "10.1109/IECON.2013.6700293",
language = "English",
isbn = "9781479902248",
pages = "6999--7005",
booktitle = "Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society",

}

TY - GEN

T1 - Multi-modular cascaded DC-DC converter for HVDC grid connection of large-scale photovoltaic power systems

AU - Echeverria, Javier

AU - Kouro, Samir

AU - Perez, Marcelo

AU - Abu-Rub, Haitham

PY - 2013

Y1 - 2013

N2 - Large-scale grid-connected photovoltaic (PV) energy conversion systems operate at low voltage and are interfaced to medium-voltage and high-voltage ac utility grids through one or two step-up voltage transformer stages. In addition, the power conversion is performed with either a single stage dc-ac converter (central inverter) or a two stage dc-dc/dc-ac (string or multi-string inverter). However, prime solar irradiation regions in the world are not always located close to available utility lines, and in some cases are far away from main consumption areas. Furthermore, long overhead transmissions lines (>400km) and underwater transmission lines above 70kM, HVDC has become the most cost-effective solution. Among HVDC technologies, voltage source converter based HVDC system, mainly based on the modular multilevel converter (MMC), have become popular due to smaller filters, multi-network connection and decoupling of active and reactive power. This paper explores a new large-scale PV plant configuration based on a dc-dc stage interfaced directly to an MMC based HVDC system. Since PV systems are dc by nature, the proposed solution has several advantages, particularly if combined directly with the HVDC power station. Some power circuit topologies are presented, including their corresponding control schemes. Simulation results are presented to provide a preliminary evaluation on the operation and performance of the proposed system.

AB - Large-scale grid-connected photovoltaic (PV) energy conversion systems operate at low voltage and are interfaced to medium-voltage and high-voltage ac utility grids through one or two step-up voltage transformer stages. In addition, the power conversion is performed with either a single stage dc-ac converter (central inverter) or a two stage dc-dc/dc-ac (string or multi-string inverter). However, prime solar irradiation regions in the world are not always located close to available utility lines, and in some cases are far away from main consumption areas. Furthermore, long overhead transmissions lines (>400km) and underwater transmission lines above 70kM, HVDC has become the most cost-effective solution. Among HVDC technologies, voltage source converter based HVDC system, mainly based on the modular multilevel converter (MMC), have become popular due to smaller filters, multi-network connection and decoupling of active and reactive power. This paper explores a new large-scale PV plant configuration based on a dc-dc stage interfaced directly to an MMC based HVDC system. Since PV systems are dc by nature, the proposed solution has several advantages, particularly if combined directly with the HVDC power station. Some power circuit topologies are presented, including their corresponding control schemes. Simulation results are presented to provide a preliminary evaluation on the operation and performance of the proposed system.

UR - http://www.scopus.com/inward/record.url?scp=84893575595&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893575595&partnerID=8YFLogxK

U2 - 10.1109/IECON.2013.6700293

DO - 10.1109/IECON.2013.6700293

M3 - Conference contribution

SN - 9781479902248

SP - 6999

EP - 7005

BT - Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

ER -