Exploring coupling coil integration in Power Semi-Conductor Modules environment for sensing in Railway traction

Abstract:
This study explores the integration of coupling coils within Power Semiconductor Modules for sensing applications in railway traction, specifically focusing on the new high power module devices generation called Low Voltage Module (LVM) in Roll to Rail specification [R2R16]. The research delves into coupling coil performance in scenarios involving short-circuits and switching phases, emphasizing di/dt measurement. Integrated sensors in the driver circuit demonstrate efficient short-circuit detection, and the study introduces sensor optimization through numerical simulation. Di/dt measurements through High Voltage (HV) main terminals enable rapid detection during operational phases. A comparison of coupling coil technologies, including Rogowski coils, highlights the possibility of using coupling coils in the region of DC minus terminals. Despite concerns about electrical isolation, this work highlights the potential of coupling coils in power electronics for railway traction, suggesting avenues to explore for further research and development.