Thyristor Rectifier for Permanent Magnet Wind Generators

Conference: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/16/2017 - 05/18/2017 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2017

Pages: 7Language: englishTyp: PDF

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Authors:
Trintis, Ionut; Knudsen, Morten Risskov; Mongeau, Peter; Pallesgaard, Stig Lund; Kjaer, Philip C. (Vestas Wind Systems A/S, Denmark)
Touzard, Sebastien; Meziti, Nabil (Semikron SARL, France)

Abstract:
This paper reports on an investigation to improve efficiency in a wind turbine’s generator-side converter. A thyristor phase-controlled rectifier is considered as replacement for the forced-commutated voltage-source converter, universally adapted in full-conversion wind turbines with permanent-magnet generators. The paper defines power capability vs generator speed and dc-link voltage level, with an accompanying closed-loop control scheme. The point design of generator and rectifier is presented. Power loss analysis shows a fair improvement of the power conversion efficiency. The paper discusses pros and cons of the particular rectifier application.