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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Measurement and Evaluation of Partial Discharge Inception Voltage for Enameled Rectangular Wires under AC Voltage

http://hdl.handle.net/2237/26256
f118426c-5fec-4ac9-ae7a-cc8fc7099e9d
名前 / ファイル ライセンス アクション
IEEE-TDEI-2015-proofread.pdf IEEE-TDEI-2015-proofread.pdf (410.7 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-05-09
タイトル
タイトル Measurement and Evaluation of Partial Discharge Inception Voltage for Enameled Rectangular Wires under AC Voltage
著者 Wakimoto, Toru

× Wakimoto, Toru

WEKO 71390

Wakimoto, Toru

Search repository
Kojima, Hiroki

× Kojima, Hiroki

WEKO 71391

Kojima, Hiroki

Search repository
Hayakawa, Naoki

× Hayakawa, Naoki

WEKO 71392

Hayakawa, Naoki

Search repository
権利
権利情報 “© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”
キーワード
主題Scheme Other
主題 Partial discharges
キーワード
主題Scheme Other
主題 environmental factors
キーワード
主題Scheme Other
主題 enamel insulated wires
キーワード
主題Scheme Other
主題 motors
キーワード
主題Scheme Other
主題 insulation testing
抄録
内容記述 Recently, the market for EVs (Electric vehicles) and HEVs (Hybrid electric vehicles) has been expanding. In these vehicles, rectangular wires have started to be used for the traction motor coil to increase the motor performance. As a result, the insulation techniques become important because the applied voltage between the wires is increasing due to a change in the motor structure and the increase in the driving voltage. In order to safeguard the motor insulation, partial discharge (PD) between coil wires must be controlled, and to do this, the coil wires should be coated with an insulator of a suitable thickness. For this purpose, the PD measurement technique is important in design and inspection on the manufacturing lines. However, the PD measurement between wires is unstable, and is especially affected by the measurement method and environmental factors. In this paper, we clarify the factors as well as the mechanism affecting the PD inception voltage (PDIV) between enameled rectangular wires under AC voltage. The effects of the ambient humidity, the pre-discharge conditions and the measuring frequency on the PDIV were analyzed. As a result, it was confirmed that when there was pre-discharge in a high humidity environment, the PDIV displayed fluctuating characteristics in which it momentarily decreased and then increased. We observed the discharges and analyzed the electric field distribution. The results showed that in high humidity environment, pre-discharge causes moisture contained in the air to adhere to the coating surfaces, resulting in an increase in the surface conductivity, which influences the electric field strength in the air gap between coil wires. These analyses indicated that the PDIV can be measured stably and reliably at high frequencies in a high humidity environment.
内容記述タイプ Abstract
出版者
出版者 IEEE
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 1070-9878
書誌情報 IEEE Transactions on Dielectrics and Electrical Insulation

巻 23, 号 6, p. 3566-3574, 発行日 2016-12
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1109/TDEI.2016.005645
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26256
識別子タイプ HDL
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