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首页> 外文期刊>IEEE Transactions on Energy Conversion >Extra high speed modified Lundell alternator parameters and open/short-circuit characteristics from global 3-D-FE magnetic field solutions
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Extra high speed modified Lundell alternator parameters and open/short-circuit characteristics from global 3-D-FE magnetic field solutions

机译：全局3-D-FE磁场解决方案提供的超高速修改的Lundell交流发电机参数和开路/短路特性

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摘要

A combined magnetic vector potential, magnetic scalar potential method of computation of 3-D magnetic fields by finite elements is used for global 3-D field analysis and machine performance computations under open-circuit and short-circuit conditions for an example 14.3 kVA modified Lundell alternator, whose magnetic field is of an intrinsic 3-D nature. The computed voltages and currents under these machine test conditions were verified and found to be in very good agreement with corresponding test data. Results of the use of this modeling and computation method in the study of a design alteration example, in which the stator stack length of the example alternator is stretched in order to increase voltage and volt-ampere rating, are given. These results demonstrate the inadequacy of conventional 2-D based design concepts and the need for this type of 3-D magnetic field modeling in the design and investigation of such machines.
机译：使用有限元计算3-D磁场的组合磁矢量势，磁标量势方法进行全局3-D场分析和开路和短路条件下的机器性能计算，例如14.3 kVA修改的Lundell交流发电机，其磁场具有固有的3D性质。验证了在这些机器测试条件下计算出的电压和电流，并与相应的测试数据非常吻合。给出了在设计变更示例的研究中使用该建模和计算方法的结果，在该设计变更示例中，示例交流发电机的定子堆长度被拉伸以增加电压和伏安额定值。这些结果证明了传统的基于2D的设计概念的不足，以及在此类机器的设计和研究中对此类3D磁场建模的需求。

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