Title :
Application issues for PWM adjustable speed AC motor drives
Author :
Jouanne, A. Von ; Enjeti, Prasad ; Gray, W.
Author_Institution :
Oregon State Univ., Corvallis, OR, USA
Abstract :
In this article, some application issues for adjustable speed AC motor drives have been investigated. The effects of high PWM frequency, or high dv/dt on the motor terminal voltages and bearing currents have been addressed and explained. Mitigation techniques have been shown to significantly reduce the transient peak voltage and dv/dt at the motor terminals, as well as within the motor windings. This reduction contributes to improved reliability of PWM motor drive systems
Keywords :
AC motor drives; AC motor protection; PWM invertors; overvoltage protection; variable speed drives; PWM adjustable speed AC motor drives; PWM inverters; high PWM frequency; high dv/dt; motor bearing currents; motor terminal overvoltages mitigation; motor terminal voltages; motor windings; reliability; transient peak voltage reduction; AC motors; Insulated gate bipolar transistors; Optical reflection; Power cable insulation; Power cables; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching frequency; Voltage;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/2943.532149
