Open AccessHigh‐voltage pulse transformer for IOT modulators
Author(s) -
Jalakas Tanel,
Janson Kuno,
Mõlder Heigo,
Roasto Indrek
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2019.0877
Subject(s) - transformer , electrical engineering , materials science , voltage , pulse (music) , electronic engineering , optoelectronics , computer science , engineering
Neutron sources like European Spallation Source consist of linear proton accelerator and beam target. The linear accelerator is supplied by inductive output tubes (IOTs) or klystrons that require high‐voltage DC supply (40 kV). This study describes the design and experimental evaluation of high‐voltage dry‐isolation pulse transformer design evaluation prototype for interleaved IOT supply modules. In order to withstand high‐voltage stress, a modular secondary winding module with multistage voltage field equalisation are designed. Inter‐winding connections are realised in the air as the separate winding outputs are routed together through common high‐voltage isolators. The novelties of the current manuscript are new pulse transformer design and the experimental work. Experiments with full‐scale prototype verified the advantages and revealed, also, some drawbacks of this construction. Proposed transformer design could be used not only in IOT or klystron power supplies but also in high‐voltage DC/DC or AC/AC converters and power electronic transformers, used in the medium‐voltage distribution grids.