Title :
Dielectric breakdown of low-density polyethylene under simulated inverter voltages
Author :
Suzuki, Hidenori ; Mukai, Shigeo ; Ohki, Yoshimichi ; Nakamichi, Yoshinobu ; Ajiki, Kohji
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Waseda Univ., Tokyo, Japan
fDate :
4/1/1997 12:00:00 AM
Abstract :
Breakdown characteristics have been investigated for low-density polyethylene immersed in silicone oil by applying power-frequency ac voltages with high-frequency components, which are simulated output voltages of a pulse-width-modulation inverter. It was found that the breakdown voltage decreases as the high-frequency component increases. However, the number of zero-crossings of the applied voltage, which is very influential in water-tree growth, does not seem to play an important role in the dielectric breakdown process
Keywords :
PWM invertors; electric breakdown; polyethylene insulation; trees (electrical); dielectric breakdown; high-frequency component; low-density polyethylene; power-frequency AC voltage; pulse-width-modulation inverter; silicone oil; simulated output voltage; water-tree growth; zero-crossing; Breakdown voltage; Computational modeling; Computer simulation; Dielectric breakdown; Dielectrics and electrical insulation; Magnetic levitation; Polyethylene; Power transformer insulation; Pulse width modulation converters; Pulse width modulation inverters;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
