Development of a 500-kV All Solid-State Linear Transformer Driver

A solid-state repetition linear transformer driver (LTD) for a high-power microwave (HPM) driver is constructed, comprising a total of 50 stage-series structures, with each stage possessing eight parallel bricks. This article describes the primary and secondary circuit differences between a driving...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2021-06, Vol.49 (6), p.1915-1919
Main Authors: Wang, Li-Min, Zhang, Zheng-Quan, Liu, Qing-Xiang, Zhang, Tong-Xin
Format: Article
Language:English
Subjects:
Circuits
High power microwave (HPM)
Impedance
Inductance
Insulated gate bipolar transistors
Laplace transforms
Magnetic cores
Magnetic fields
Power transformer insulation
Primary circuits
Pulse duration
Pulse transformers
pulse-forming network (PFN)
Repetition
Resistance
Resistors
Solid state
solid-state linear transformer driver (LTD)
Transformers
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Summary:A solid-state repetition linear transformer driver (LTD) for a high-power microwave (HPM) driver is constructed, comprising a total of 50 stage-series structures, with each stage possessing eight parallel bricks. This article describes the primary and secondary circuit differences between a driving source and a modern LTD, as well as analyzing the influence of load impedance on system efficiency in a simplified circuit of the LTD using a Laplace transform. This article also examines the optimum load impedance for a given magnetic core and primary circuit. The current load impedance of one stage is 2~\Omega , and the corresponding system efficiency is 95%. A real-time control and triggering system are developed. A trigger transformer with a 100-channel pulse output is designed. The output voltage of the constructed driving source is about 500 kV, the current is 5 kA, the pulsewidth is about 125 ns, and the output power is 2.5 GW. The driving source can work at a repetition rate of 50 Hz. The driving source will drive a low magnetic field relativistic backward-wave oscillator to generate HPMs.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2021.3077610