CAJ | 학술논문

含有AlNiCo、FeCrCo等非线性永磁体的电磁机构，在参数设计过程中需要进行上千次的电磁吸力计算，若使用有限元等数值方法，将消耗大量计算时间，而传统等效磁路法的计算精度有限。为了解决这一问题，提出了一种永磁体分布参数模型(distributed parameter calculation model，DPM)，推导其完整的数学模型及校验条件；以某牌号开路状态下条形非线性永磁单体为例，使用基于磁力线划分的建模方法，求解各分段的起始工作点及截面磁通，并对比有限元方法和实验测试数据，验证了该分布参数模型在永磁单体计算中的正确性。对比有限元法与实测结果可知，该模型具有计算速度快、计算精度较高的特点。
함유AlNiCo、FeCrCo등비선성영자체적전자궤구，재삼수설계과정중수요진행상천차적전자흡력계산，약사용유한원등수치방법，장소모대량계산시간，이전통등효자로법적계산정도유한。위료해결저일문제，제출료일충영자체분포삼수모형(distributed parameter calculation model，DPM)，추도기완정적수학모형급교험조건；이모패호개로상태하조형비선성영자단체위례，사용기우자력선화분적건모방법，구해각분단적기시공작점급절면자통，병대비유한원방법화실험측시수거，험증료해분포삼수모형재영자단체계산중적정학성。대비유한원법여실측결과가지，해모형구유계산속도쾌、계산정도교고적특점。
The parameter design of electromagnetic devices which contain nonlinear permanent magnet (NPM) like AlNiCo and FeCrCo, often needs the calculation on magnetic force of thousands of times. It will cost a lot of time when using the finite element method (FEM). And the accuracy is limited when the magnetic equivalent circuit method (MEC) is used. In order to solve the problem, a distributed parameter calculation model (DPM) of NPM bars was established in this paper, and the solution procedure as well as the verification condition of this model was given. By a case study of the single NPM bar, the method of magnetic field lines division was adopted to build the permanent magnet DPM, solve the starting point and section magnetic flux of each subsection, make a comparison between FEM and test data, and verify the accuracy of this magnetic field line based the distributed parameter model in NPM bar calculation. This model proves to be of acceptable calculation accuracy and high calculation speed.