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Reduction Method of Fluctuation in Partial Discharge Inception Voltage for Inverter‐Fed Rectangular Wire Motors
Author(s) -
WAKIMOTO TORU,
KOJIMA HIROKI,
HAYAKAWA NAOKI
Publication year - 2017
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22908
Subject(s) - humidity , materials science , partial discharge , voltage , electromagnetic coil , inverter , electrical engineering , mechanics , acoustics , engineering , physics , meteorology
SUMMARY We investigated the decisive factors that affect partial discharge inception voltage (PDIV) fluctuation between the coil wires under a sinusoidal voltage by using a rectangular wire motor. As a result, we found that PDIV under low humidity fluctuates by the surface charge, and PDIV under high humidity varies transitionally with the surface conductivity activated by predischarge. From these analyses, we proposed the measurement method of PDIV with a low fluctuation and transition for the rectangular wire motors, which will be optimized by environmental humidity, predischarge condition, and measuring frequency.