2017 IEEE Pulsed Power Conference

Square Pulse LTD Stage Based on Simplified Pulse Forming Network

20 Jun 2017, 11:15

15m

Preston (Hilton Brighton Metropole Hotel)

Oral Pulsed Power Physics and Technology, Components and HV Insulation Oral session 7 - Power Conditioning , Linear Transformer Drivers (LTDs), Pulse Forming Lines and Transformers - Session Chair : Weihua Jiang

Speaker

Mr Zhou Liangji (Institute of Fluid Physics, CAEP)

Description

Linear transformer driver (LTD) is a new technical approach that can deliver fast high current and high voltage pulses with very compact devices. Traditional LTDs generate sinusoidal shape pulse by LC discharge, while many situations such as FXR and HPM need square pulse. This paper presents a new technical scheme for square pulse LTD in which simplified PFN take the place of LC “bricks” in traditional LTD. The PFN just consists of two capacitors in parallel with one common switch . This technology does not increase the number of switches and complexity of the system. A LTD stage with ten PFN branches has been designed and tested. When charged to ±80 kV and load resistance is about 0.5 Ω, the peak output voltage is ~91 kV, the pulse width is about 103 ns, and rise time is about 22ns.