CAJ | 학술논문

为了更加准确地计算永磁直线电机矩形开槽情况下的气隙磁场分布，提出了一种改进的许克变换解析计算方法。首先，采用等效磁化电流法，建立永磁直线电机初级铁芯无槽情况下的气隙磁场模型；其次，根据永磁直线电机的结构尺寸，并考虑初级铁芯矩形开槽的影响，对传统的许克变换方法加以改进；然后，利用改进的许克变换方法，解析计算矩形开槽永磁直线电机的气隙磁场分布。理论分析和真实的数据计算结果表明，与传统的许克变换方法相比，所提出的方法更接近于有限元软件的计算结果。最后，根据改进的许克变换解析计算方法，对电机气隙磁场分布进行优化设计，试制了一台短次级圆筒型永磁直线发电机。
위료경가준학지계산영자직선전궤구형개조정황하적기극자장분포，제출료일충개진적허극변환해석계산방법。수선，채용등효자화전류법，건립영자직선전궤초급철심무조정황하적기극자장모형；기차，근거영자직선전궤적결구척촌，병고필초급철심구형개조적영향，대전통적허극변환방법가이개진；연후，이용개진적허극변환방법，해석계산구형개조영자직선전궤적기극자장분포。이론분석화진실적수거계산결과표명，여전통적허극변환방법상비，소제출적방법경접근우유한원연건적계산결과。최후，근거개진적허극변환해석계산방법，대전궤기극자장분포진행우화설계，시제료일태단차급원통형영자직선발전궤。
An improved analytical calculation method based on Schwarz-Christoffel mapping is pro-posed to calculate the accurate air gap magnetic field distribution of rectangular shape permanent magnet linear machine.First,an air gap magnetic field model without considering slot effect is built by the equivalent magnetizing current method.Secondly,the traditional Schwarz-Christoffel map-ping is improved by considering the structure size and rectangular slot effect of permanent magnet linear machine.Then,the air gap magnetic field distribution of rectangular slot permanent magnet linear machine is calculated by the improved Schwarz-Christoffel mapping.The detailed theory anal-ysis and calculation results show that,compared with the traditional Schwarz-Christoffel mapping, the proposed method is more consistent with finite element analysis.Finally,a short secondary tubu-lar permanent magnet linear generator is constructed by using the improved Schwarz-Christoffel map-ping .