PWMインバータ駆動ブラシレスDCモータの軸電圧とベアリンググリスとの関係について

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2013/10/01

タイトル(英語): Relationship between Shaft Voltage and Bearing Grease in Brushless DC Motor Driven by PWM Inverter

著者名: 礒村　宜典（パナソニック（株）），前谷　達男（パナソニック（株）），渡辺　彰彦（パナソニック（株）），小宮山　宏（ミネベア（株）），森本　茂雄（大阪府立大学），山本　吉朗（鹿児島大学）

著者名(英語): Yoshinori Isomura (Panasonic Corporation), Tatsuo Maetani (Panasonic Corporation), Akihiko Watanabe (Panasonic Corporation), Hiroshi Komiyama (MINEBEA CO., LTD.), Shigeo Morimoto (Osaka Prefecture University), Kichiro Yamamoto (Kagoshima University)

キーワード: 軸電圧，ベアリンググリス，絶縁破壊電圧　　shaft voltage，bearing grease，dielectric breakdown voltage

要約(英語): This paper describes the relationship between the shaft voltage and the bearing grease in a brushless DC motor driven by a PWM inverter. The motor has an insulated rotor to reduce the shaft voltage. At first, we establish a method that determines the bearing capacitance by using the proposed bridge-type equivalent circuit and calculates the shaft voltage from the equivalent circuit. Next, we establish a method calculating the dielectric breakdown voltage of a bearing from the oil film thickness of the bearing grease. Finally, we compare the calculated dielectric breakdown voltage with the shaft voltage of the motor. In addition, we confirm the validity of the insulated rotor in the motor by clarifying the fact that in the motor the shaft voltage is less than or equal to the dielectric breakdown voltage of the bearing grease over the practical operating speed range.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.133 No.10 （2013）

本誌掲載ページ: 954-960 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/133/10/133_954/_article/-char/ja/