A high-power-density,small-diameter submersible permanent magnet synchronous machine with a rated power of 60 kW,a shell diameter of 89 mm,and a core length of 5 200 mm has been designed.To address the issue of the submersible permanent magnet synchronous machine generating a considerable amount of heat,which is difficult to dissipate in an underground environment with high temperatures,an electromagnetic simulation model has been established using Maxwell.This has enabled the copper loss and iron core loss of the winding to be obtained.In consideration of mechanical and stray losses.These are employed as heat sources for temperature field calculations.A three-dimensional temperature field simulation model was constructed based on the principles of heat transfer theory.The influences of varying air gap length,air gap motor oil flow rate,ambient temperature,and production casing size on the temperature field distribution and temperature rise of the motor underrated working conditions were simulated.The model provides technical support for the manufacture and application of small-diameter submersible permanent magnet synchronous machine.
关键词
小井眼井/小直径/潜油永磁同步电机/损耗分析/温度场分析
Key words
small borehole oil well/small diameter/submersible permanent magnet synchronous machine/loss analysis/temperature field analysis
维普
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