Solid-State Linear Transformer Driver Based on Full-Bridge Bricks

Abstract

This article proposes a solid-state linear transformer driver (LTD) structure based on full-bridge bricks, which can not only generate bipolar pulses but also avoid the use of additional core reset circuits. The theoretical analysis and experimental results show that a reverse voltage overshoot will occur after each pulse ends if simultaneous conduction strategy is adopted. The phase shift strategy can provide a low-impedance circuit for the primary current to suppress reverse voltage overshoot. An experimental prototype with six modules is implemented. Each module consists of two full-bridge bricks. The prototype can generate bipolar high-voltage pulses with an amplitude of 0–4.2 kV, a pulsewidth of 100–500 ns, and a frequency of 0–10 kHz. The full-bridge LTD can drive the ozone generator with surface dielectric barrier discharge structure.