Frequency optimisation for DC/DC converters in DC-connected offshore wind turbines

Timmers, Victor and Egea-Àlvarez, Agustí and Gkountaras, Aris; (2023) Frequency optimisation for DC/DC converters in DC-connected offshore wind turbines. In: 2023 25th European Conference on Power Electronics and Applications (EPE'23 ECCE Europe). IEEE, Piscataway, NJ. ISBN 9789075815412 (https://doi.org/10.23919/EPE23ECCEEurope58414.2023...)

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Abstract

In all-DC wind farms, DC/DC converters connect the low voltage wind turbine output to the high voltage DC array. One potential benefit of using DC/DC converters is that they require a relatively small transformer due to their higher frequency operation. However, there is no consensus as to what this frequency should be. This paper aims to determine the optimal operating frequency for DC/DC converters in 15 MW wind turbines connected to an 80 kV DC array. A multi-objective optimisation is performed taking into account the DC/DC converter volume, weight and losses. Frequencies ranging from 500 Hz to 5 kHz were tested for unidirectional, bidirectional, single-phase and three-phase converters. The optimal frequencies for unidirectional and bidirectional converters were found to be approximately 2 kHz and 1 kHz, respectively.

  • Item type:Book Section
    ID code:87077
    Dates:
    Date
    Event
    2 October 2023
    Published
    Notes:© 2023 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.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:26 Oct 2023 15:21
    Last modified:18 Apr 2024 00:08
    URI:https://strathprints.strath.ac.uk/id/eprint/87077
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