A new mathematical tool to investigate the influence of cable characteristics and IGBT fast switching on voltage transients and differential mode currents for PWM drives

The authors propose a new mathematical tool to investigate the influence of cable characteristics upon pulse voltage transients and their associated differential mode (DM) currents in PWM long cable drives. Even if reflected wave transient voltages have received considerable investigation for IGBT voltage source inverters, the modeling and simulation of these voltage transients still require precise modeling. Moreover, another consequence of the IGBT fast rise time, which is the resulting high frequency DM current, has not been previously examined in detail for these systems.