An aggregation scheme for offshore wind farms with VSC-based HVDC collection system

Nilanjan Ray Chaudhuri, Amirnaser Yazdani

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

2 Scopus citations

Abstract

This paper proposes a new aggregation scheme for large-scale offshore wind farms. The aggregation scheme is based on direct-drive, variable-speed, wind-power units which are interfaced with a High-Voltage DC (HVDC) collector substation. Each wind-power unit employs a diode-bridge rectifier cascaded with a Sinusoidal Pulse-Width Modulated (SPWM), Voltage-Sourced Converter (VSC). The use of the diode-rectifier is expected to bring about higher efficiency, lower converter cost, and higher reliability. The offshore HVDC collector employs a three-level Neutral-Point Clamped (NPC) converter which adopts a single-pulse switching strategy. Therefore, a high voltage level is permitted while the switching losses are minimized. Moreover, the pulse width of the HVDC AC voltage is chosen such that a twelve-pulse waveform is approximated, thereby, avoiding phase-shifting transformers in the interest of lower weight and footprint. The feasibility and effectiveness of the proposed aggregation scheme and its controls are demonstrated by simulation studies in the PSCAD/EMTDC software environment.

Original languageEnglish (US)
Title of host publication2011 IEEE PES General Meeting
Subtitle of host publicationThe Electrification of Transportation and the Grid of the Future
DOIs
StatePublished - Dec 9 2011
Event2011 IEEE PES General Meeting: The Electrification of Transportation and the Grid of the Future - Detroit, MI, United States
Duration: Jul 24 2011Jul 28 2011

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Other

Other2011 IEEE PES General Meeting: The Electrification of Transportation and the Grid of the Future
CountryUnited States
CityDetroit, MI
Period7/24/117/28/11

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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