Effects of Humidity and Pre-discharges on Partial Discharge Inception Voltage under Repetitive Impulse Voltages

Kikuchi, Yusuke; Fukuda, Yuki; Nagata, Masayoshi; Ikegami, Tomomi; Sakurai, Takayuki; Yoshimitsu, Tetsuo

doi:10.1541/ieejfms.135.168

Cited by 4 publications

(2 citation statements)

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“…On the other hand, surface potential is supposed to be affected by charge accumulation due to predischarge and discharge in PDIV measurement, and by change in surface conductivity at high humidity . Thus, in this study, we focused on changes in coating surface potential due to charge accumulation and in coating surface conductivity under high humidity as the factors of PDIV variance and transient fluctuation.…”

Section: Discussion On Factors Of Pdiv Fluctuationmentioning

confidence: 99%

“…Therefore, charge accumulation might also depend on how voltage application was stopped. This influence, however, would be small because applied voltage was gradually reduced (at 20 V/s) after PD occurrence . Besides, surface potential was measured before each of 5 PDIV measurements, but variance in surface potential was small (≤1 V).…”

Section: Discussion On Factors Of Pdiv Fluctuationmentioning

confidence: 99%

See 1 more Smart Citation

Reduction Method of Fluctuation in Partial Discharge Inception Voltage for Inverter‐Fed Rectangular Wire Motors

Wakimoto

Kojima

Hayakawa

2016

Electrical Engineering Japan

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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.

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Section: Discussion On Factors Of Pdiv Fluctuationmentioning

confidence: 99%

Section: Discussion On Factors Of Pdiv Fluctuationmentioning

confidence: 99%