Primary energy storages based on linear transformer stages

Abstract

Primary storages based on a linear transformer scheme were developed long ago. In this scheme, the secondary turn only has to be insulated from the high output voltage. Seven years ago at the High Current Electronics Institute (HCEI) a primary storage based on a linear transformer scheme and called the Linear Transformer Driver (LTD) stage was designed. In LTD stages, the primary turn, the storage capacitors with the switches, the core, and the outer conductor of the secondary turn are integrated into the stage cavity representing one separate building block of the primary storage. The body of the LTD cavity keeps ground potential during the shot allowing us to assemble them in series or in parallel depending on load requirements. Such flexibility of the storage structure and high output power of the LTD stages allows us to replace for some applications the traditional water line technology with LTD-based primary storages that are connected directly to the load (Direct Drive Scheme—DDS). In this article, we present the design of several LTD stages developed at HCEI and give examples of high-power energy storages produced by using the LTD technology.

Design, Simulation, and Fault Analysis of a 6.5-MV LTD for Flash X-Ray Radiography

“…Each cavity contains many, in this case 12 bricks evenly spaced azimuthally. LTDs with 10, 20, and 40 bricks per cavity have been built and tested using this architecture [5]- [7], [11]- [13].…”

Electron-beam accelerator for pumping of a Xe2 lamp

“…Linear transformer driver (LTD) technology is actively developed since 1997 at the Institute of High Current Electronics in Tomsk, Russia (Kim et al, 1999;Bastrikov et al, 2003;Kovalchuk et al, 2009a). The LTD driver is an induction generator similar to the linear induction accelerator (LIA), the inductive voltage adder (IVA), and the linear pulsed transformer (LPT).…”

Efficient ferromagnetic core impedance model with application to finite-difference time-domain simulation

“…Linear transformer drivers (LTDs) are a rapidly developing area of pulsed-power technology capable of delivering high-power, high-current, 100-300 ns output pulses in a compact configuration [1][2][3][4][5][6]. The LTD platform is a type of induction accelerator that utilizes close packing of primary energy storage and switching to achieve a shortduration, high-peak-power pulse.…”