中南大学学报（自然科学版）2025，Vol.56Issue(2)：536-544,9.DOI:10.11817/j.issn.1672-7207.2025.02.011
新型多端口盘式永磁电机气隙漏磁及空载气隙磁密
Air gap leakage and open circuit air gap flux density of new multiport disk permanent magnet motor
摘要
Abstract
A new type of multi-port disk permanent magnet motor(MDPMM)was proposed to address the problem of a single output port of the traditional motor.Firstly,the structure and working principle of the motor were introduced.Secondly,to address the problem that the circumferential end of the annular arc stator of the motor makes its leakage and magnetic field distribution more complicated,the flux distribution coefficient was introduced,an equivalent magnetic network model for the region affected by the end of the annular arc stator was established,the equivalent reluctance of each was calculated,and the expression of leakage coefficient of the region was analyzed.Finally,considering the current density equivalence of permanent magnets,the analytical model of the arc stator and the corresponding disk rotor area was established,the analytical equation of the air gap magnetic field in this area was deduced by using the equivalent magnetization intensity method,and the influence of the stator rack and slot structure on the air gap magnetic field was calculated by using the Schwarz-Christoffel(SC)transformation.The results show that the motor can realize the multi-degree-of-freedom power output of double-disk rotor and planetary wheel rotor at the same time.For the two types of magnetic circuits affected and unaffected by the annular stator end section,the calculated values of the air gap magnetic leakage coefficients are 1.263 and 1.167,and the finite element simulation values are 1.375 and 1.222,respectively.The relative errors of the calculated values and simulation values are 8.15％and 4.50％,respectively.The average air gap magnetic density of the two magnetic circuits is 0.481 and 0.492,and the finite element simulation values are 0.497 and 0.503,respectively.The relative errors of the calculated and simulated values are 3.22％and 2.19％,respectively.The results are able to satisfy the requirements for the accuracy of engineering calculations.关键词
多端口盘式电机/磁通分布系数/等效磁网络/漏磁系数/等效磁化Key words
multi-port disk motor/flux distribution coefficient/equivalent magnetic network/flux leakage coefficient/equivalent magnetization method分类
信息技术与安全科学引用本文复制引用
樊溢国,刘欣..新型多端口盘式永磁电机气隙漏磁及空载气隙磁密[J].中南大学学报（自然科学版）,2025,56(2):536-544,9.基金项目
国家自然科学基金资助项目(51875408)(Project(51875408)supported by the National Natural Science Foundation of China) （51875408）
