一种电磁式发动机电磁机构设计与分析

为解决电磁式发动机电磁机构的设计问题,提出一种采用有限元法与磁路法相结合的目标设计法。根据电磁机构的结构特点,推导出磁导、磁漏、磁阻、总磁通、磁势等参数间的关系表达式,确定出电磁线圈及铁芯尺寸的计算模型。利用三维有限元方法,分析电磁线圈通电时,电磁机构内的衔铁与铁芯在分离和接触两种状态下,磁场强度及电磁能分布情况。设计实验对电磁机构力学性能进行测试,结果表明该电磁机构设计合理,磁场强度及磁能分布均匀,且具有极高的导磁的能力。

Electromagnetic Mechanism Design and Analysis of Electromagnetic Engine

In order to solve the design problem of the electromagnetic mechanism of the electromagnetic engine, a method for the design of electromagnetic mechanism is proposed by means of finite element method and magnetic circuit method. According to the structure characteristics of the electromagnetic mechanism, the relation expressions of magnetic conductivity, magnetic leakage, magnetic resistance, total flux, magnetic potential and other parameters are deduced, and the calculation model of electromagnetic coil and core size is determined. Using three dimensional finite element method, the analysis of the electromagnetic coil current, electromagnetic agencies within the armature contact with iron core in the separation and two kinds of state, magnetic field intensity and distribution of electromagnetic energy. The mechanical properties of the electromagnetic mechanism were tested by the design experiment, and the results showed that the electromagnetic mechanism was reasonable in design, the magnetic field intensity and magnetic energy distribution were uniform, and the magnetic field was highly conductive.