Development and Validation of a Smart Architecture for Thyristor Valves

A high voltage thyristor converter is realized by many valve sections, whose volume is approximately occupied for only the 10% by thyristors and for the 10% by the relevant gate drivers. The remaining 80% is taken by passive auxiliary circuits, needed to protect thyristors during turn-on and turn-of...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2023-08, Vol.11 (4), p.1-1
Main Authors: Sala, G., De Bonis, G., Costabeber, A., Tani, A., Johnson, M., Clare, J.
Format: Article
Language:English
Subjects:
AC-DC power conversion
Active circuits
Capacitance
Circuit protection
Damping
HVDC transmission
Integrated circuit modeling
LCC converters
Power electronics
power semiconductor switches
thyristor valves
Thyristors
Valves
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Summary:A high voltage thyristor converter is realized by many valve sections, whose volume is approximately occupied for only the 10% by thyristors and for the 10% by the relevant gate drivers. The remaining 80% is taken by passive auxiliary circuits, needed to protect thyristors during turn-on and turn-off commutations. This work represents a preliminary validation of an innovative architecture that aims to reduce the auxiliary circuit cost, volume, and weight of the overall valve, through the investigation of active, instead of passive solutions. The work starts from investigation of the phenomena behind the valve transient behaviors and proceeds with simulations and experimental tests, using a reduced scale circuit prototype. The match between the obtained results validates the investigated active configurations, confirming that the proposed solution can be used for improving thyristor valves.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2023.3262344