Halbach型空芯直线电动机绕组磁动势及牵引力计算

摘要

从电流产生的磁场出发,推导了三相绕组产生磁动势在空芯直线电动机中的分布,并对基波磁动势进行了具体分析,得到其行波表达式.又采用解析法对Halbach型直线电动机的牵引力进行了研究,得到牵引力计算简单有效的解析公式,并用ANSYS对解析公式进行了验证,证明了解析法的准确性.%The expression of the magnetic motive force(MMF) excited by the three-phase windings in the hollow-core linear motors was introduced based on the MMF produced by current in the space. The fundamental MMF and the expression of its traveling wave was obtained. The analytical method was used to analyze the traction of Halbach hollow-core linear motor,and a simple expression to express the traction was obtained. The accuracy of the expression was verified by ANSYS.