End windings are the exposed coil extensions at the ends of generator stator slots that connect coils to form complete electrical circuits.
End windings refer to the portions of stator winding coils that extend beyond the laminated iron core slots at both ends of a generator stator. These non-active sections provide necessary electrical connections between individual coils to form complete phase windings while allowing mechanical support and insulation. They are critical for electromagnetic performance, heat dissipation, and structural integrity in rotating electrical machines.
诱因 → 失效模式 → 工程缓解
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End windings experience high electromagnetic forces, thermal cycling, and vibration without the structural support of the iron core, making them susceptible to insulation degradation, mechanical fatigue, and partial discharge.
Large generators use direct hydrogen cooling (for hydrogen-cooled machines) or indirect water cooling through hollow conductors, combined with strategic baffling to direct coolant flow across winding surfaces.
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