Study of the virtual instrumentation applied to measure pulsed heavy currents

The design and implementation of a high-performance virtual instrumentation (VI) based on the Rogowski coil are discussed. The instrumentation can measure pulsed heavy currents of the high-power high-voltage laser source whose performance indices are introduced. The analysis of models, including both time-domain and frequency-domain characteristics of the Rogowski coil, is presented. Problems related to the data acquisition systems (DASs), including the window data transfer technique, have been investigated to meet the requirements of real-time testing applications. Some experimental results verifying the validity of the proposed instrumentation for measuring pulsed currents of the laser source are presented.