Water-tree characteristics in low-density PE under simulated inverter voltages

H. Suzuki*, S. Mukai, Y. Ohki, Y. Nakamichi, K. Ajiki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Water tree characteristics have been investigated for low-density polyethylene by applying power-frequency ac voltages with high-frequency components, which are simulated output voltages of a pulse-width-modulation inverter. If we compare the water-tree length among single-frequency voltages, the water tree grows faster if the frequency is higher. However, if we superpose a power-frequency voltage on the high-frequency voltage, tree growth is suppressed. The tree length becomes shorter if the superposed power-frequency voltage is higher. This surprising result is explainable by considering that the zero-crossing of the applied voltage plays an important role in tree propagation.

Original languageEnglish
Pages (from-to)256-260
Number of pages5
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Issue number2
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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