Effect of Jump Voltage and Rise Time on the Temperature and Electric Field Distribution Along the Stress Grading System of An Inverter-fed Motor

This paper first built an inverter circuit which can change the number of cascaded units to obtain different multi-level voltage waveforms, such as 7-level, 9-level, etc. Secondly, a 2D axisymmetric model of the stress grading system of an 18kV inverter-fed motor was established, whose stress grading system includes the conductive slot coating and stress grading coating, named low resistance (LR) ...