Linear Transformer Drivers (LTD) have become a popular type of pulse generator for pulsed power-driven systems due to their short rise time and high repetition rates. This study investigates the performance of a 10-stage LTD, operating at a maximum voltage of 25 kV, with a rise time of 8 ns and a maximum pulse width of 600 ns. The focus is on three key aspects: magnetic core efficiency, transmission line impedance, and reset mechanisms.
The first aspect examines the impact of three differently annealed magnetic cores with unique permeability and coercivity characteristics on the LTD’s energy transfer efficiency. Comparative analysis provides insights into optimizing core selection for enhanced energy transfer and reduced losses. The second aspect evaluates the influence of transmission line impedance variations on the output waveform. Impedance mismatches, critical for preserving pulse shape fidelity, are analyzed to assess their effects on rise time, amplitude, and overall waveform stability.
Finally, the research explores the differences between pulsed and continuous reset mechanisms on LTD output. Pulsed resets, used between pulses to restore the magnetic core state, are compared to constant resets that enable uninterrupted operation. The investigation highlights how these reset modes affect peak output voltage, pulse width, and system reliability.