Fault-tolerant control for a modular generator and converter scheme for direct-drive wind turbines : Industrial Electronics, IEEE Transactions on

Parker, M.A. and Ng, Chong and Ran, Li (2011) Fault-tolerant control for a modular generator and converter scheme for direct-drive wind turbines : Industrial Electronics, IEEE Transactions on. IEEE Transactions on Industrial Electronics, 58 (1). pp. 305-315. ISSN 0278-0046 (https://doi.org/10.1109/TIE.2010.2045318)

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Abstract

A modular power electronic converter, with a cascaded H-bridge multilevel inverter, has been proposed as the grid interface for a large direct drive wind turbine generator. The present study is to investigate the potential and requirement of fault tolerant operation in such a system. As each module is connected to isolated generator coils, tolerance to a module or coil fault is possible if the affected module can be bypassed while the control of the healthy modules can be adjusted accordingly. A boost rectifier scheme on the machine side of the power conversion stage has been developed for this purpose, featuring control of the coil current without measuring the EMF. A coordinated DC-link voltage controller has been developed which can rapidly raise the DC-link voltage of the remaining modules to compensate for the loss of a module, while ignoring the ripple in the DC-link due to low-frequency inverter switching. The ability of the resultant system to tolerate module faults has been demonstrated on a small scale laboratory prototype.

ORCID iDs

Parker, M.A. ORCID logoORCID: https://orcid.org/0000-0001-8268-4829, Ng, Chong and Ran, Li;
  • Item type:Article
    ID code:37053
    Dates:
    Date
    Event
    January 2011
    Published
    Keywords:fault tolerance, invertors, power convertors, power electronics, power generation control, rectifiers, voltage control, wind turbines, boost rectifier scheme, cascaded H-bridge multilevel inverter, coil current, coordinated dc-link voltage controller, direct-drive wind turbine generator, electromotive force, fault-tolerant control, grid interface, isolated generator coils, low-frequency inverter switching, modular generator-converter scheme, modular power electronic converter, power conversion stage, Electrical engineering. Electronics Nuclear engineering, Control and Systems Engineering, Computer Science Applications, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:25 Jan 2012 11:18
    Last modified:29 Sep 2022 01:25
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/37053
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