ROTARY ELECTRIC MACHINE

PROBLEM TO BE SOLVED: To provide a highly efficient variable speed inverter drive rotary electric machine with high reliability, which electrostatically shields a high frequency electric field generated from a stator winding of the rotary electric machine driven by an inverter, and prevents electric...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OHATA KOJI, KONNO TAKEO, ABE KEISUKE, SUZUKI NORINAGA
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a highly efficient variable speed inverter drive rotary electric machine with high reliability, which electrostatically shields a high frequency electric field generated from a stator winding of the rotary electric machine driven by an inverter, and prevents electric corrosion of a bearing of a rotor.SOLUTION: Insulating layers 8 to 10 are installed in a whole inner peripheral face of a stator, which faces a rotor, in a stator core 2 where a stator winding 7 is buried and in a coil end portion. Conductive layers 11 to 13 extending in an axial direction and the insulating layers (air layers, for example) are alternately arranged in a circumferential direction to make a striped shape so that conductive portions and insulating portions are alternately formed in a direction vertical to a flow of magnetic flux of the stator core on surfaces of the insulating layers. The conductive layers are connected to the core 2 at an axial direction end of the core 2, where the stator winding 7 is stored.