Modified back-to-back current source converter and its application to wind energy conversion systems

Ibrahim Abdelsalam, Grain Philip Adam, Derrick Holliday, Barry W. Williams

Research output: Contribution to journalArticle

12 Citations (Scopus)
59 Downloads (Pure)

Abstract

The back-to-back (BTB) converter is used in power conversion applications such as machine drives, wind energy conversion systems (WECS), uninterruptible power supplies and high-voltage, direct current transmission systems. Various topologies have evolved around voltage source converters and current source converters (CSCs) in an attempt to meet various design and reliability constraints. This paper proposes a new CSC-based BTB converter suitable for WECS application. The proposed configuration addresses the main drawbacks of the conventional BTB CSCs, such as the over-voltage frequently experienced by switches during commutation. The inverter side converter has zero switching losses. The proposed WECS offers the following advantages: simple and easy control, reduced switching frequency and maximum power point tracking with controllable grid active and reactive power. A low-voltage ride-through (LVRT) solution is also provided in the proposed WECS. PSCAD/EMTDC simulation is used to assess the steady-state and dynamic behaviours of the proposed system under different operating conditions and during LVRT. Experimental results allow steady-state and dynamic behaviour assessment of the proposed system under different operating conditions.
Original languageEnglish
Pages (from-to)103-111
Number of pages9
JournalIET Power Electronics
Volume8
Issue number1
Early online date24 Nov 2014
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • relays and switches
  • wind power plants
  • power and energy control
  • power system control
  • control of electric power systems

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