Effects of Ambient Humidity and Temperature on Partial Discharge Characteristics of Conventional and Nanocomposite Enameled Magnet Wires

被引：51

作者：

Kikuchi, Yusuke ^{[1
]}

Murata, Tomohiro ^{[1
]}

Uozumi, Yoshinobu ^{[1
]}

Fukumoto, Naoyuki ^{[1
]}

Nagata, Masayoshi ^{[1
]}

Wakimoto, Yasuo ^{[2
]}

Yoshimitsu, Tetsuo ^{[2
]}

机构：

[1] Univ Hyogo, Grad Sch Engn, Dept Elect Engn & Comp Sci, Himeji, Hyogo 6712280, Japan

[2] Toshiba Mitsubishi Elect Ind Syst Corp, Rotating Machinery Syst Div, Tech Management Grp, Strateg Plannning & Adm Dept, Yokohama, Kanagawa 2300045, Japan

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2008年 / 15卷 / 06期

基金：

日本科学技术振兴机构;

关键词：

Enamel insulated wires; humidity; inverter-fed motors; nanotechnology; partial discharges;

D O I：

10.1109/TDEI.2008.4712665

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Effects of ambient humidity and temperature on partial discharge (PD) characteristics in twisted pairs with conventional and nanocomposite enameled magnet wires have been investigated. Measurements of the PD inception voltage (PDIV) and the apparent PD charge were performed by applying an ac sinusoidal waveform voltage of 60 Hz to the twisted pair. The observed PDIV in this study can be classified into the following three behaviors. First, the PDIV in both wires decreases with increasing relative humidity (RH) at low temperature. Secondly, the PDIV in both wires slightly increases when increasing the RH at high temperature. Thus, there is a certain value of the absolute humidity to determine the lowest PDIV in both cases with the conventional and nanocomposite enameled wires. Thirdly, the PDIV in the conventional enameled wire significantly decreases at the R.H of 95 %, while the decrease rate of that in the nanocomposite enameled wire is relatively small. The observed PD phenomena are discussed in terms of material characterization of the enameled wires such as changes in permittivity due to moisture absorption and wettability under voltage application.

引用

页码：1617 / 1625

页数：9

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