摘  要：盘式电机的磁场是一个复杂的三维磁场，采用传统二维磁场有限元法来计算盘式电机定子绕组涡流损耗结果相差很大；若采用三维磁场有限元法来计算则会浪费大量时间，介于这两点，该文提出一种参数化建模的分环法，即把三维磁场的盘式电机转化为多环的二维磁场直线电机，理论上可把盘式电机分割为无数个沿着径向叠加的直线电机，即可节约计算时间，又能提高计算精度，随后所设计的11 kW无铁芯定子绕组无刷直流永磁盘式电机样机实验结果也证明了理论计算和工程设计的准确性、可行性和计算过程的快速性，为后续进行电机进一步优化设计奠定了基础。
关键词：无铁芯盘式电机；涡流损耗 ； 参数化建模； 分环法

Abstract: Because of the complexity of 3D magnetic field in disc motor, it’s not accurate for us to compute the eddy current loss of the windings in stator by means of the FEA method computing 2D magnetic field in conventional motor. Though can be solved by 3D FEA method, it will consume vast time, especially at the beginning of design. Taking the disadvantage into account, the paper presented a new parametric model on basis of quasi-3D computation method to the calculation and analysis of eddy current loss. Theoretically speaking, disc motor can be translated into arbitrary multislice linear motors, in which magnetic fields can approximately be 2D. It can save lots of time and improve the precision. Then an 11kW BLDC permanent magnet disc machine with coreless stator was designed in terms of the new method, and the experiment results proved the accuracy and reliability in this new method. It shortens the design cycle and paves the way for optimal design of disc motor.
Key words: disc machine with coreless stator; eddy current loss; parametric model; quasi-3D computation