Open AccessAnalysis and research on the fault‐tolerant performance of the high‐frequency isolated energy conversion link for an integrated distribution transformer system
Author(s) -
Wang Qingshan,
Liang Deliang,
Liu Yibin,
Chen Qixu,
Zhang Mingkang
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8438
Subject(s) - converters , transformer , electromagnetic coil , waveform , distribution transformer , topology (electrical circuits) , electronic engineering , electrical engineering , computer science , delta wye transformer , engineering , voltage
In order to enhance the stability of the integrated distribution transformer system (IDTS), a fault‐tolerant topology of the high‐frequency (HF) isolated energy conversion link which features a multi‐winding HF transformer and two multi‐arm converters are proposed in this paper. The operation process of the HF‐isolated energy conversion link with an open‐circuit fault in the power electronic switching devices is analysed in detail, and the fault characteristics are researched. Through modifying the operation modes of the proposed topology, the damaged part of the circuit can be replaced with the redundant transformer windings and bridge arms, maintaining the continuous operation of the IDTS. The theoretical analyses are verified by the simulated operation waveforms.