摘要
准确计算表贴式永磁电机的磁场分布是进行电机设计和电机优化的关键。本文建立了表贴式永磁电机的子域叠加模型,通过解析法计算了电机的电枢反应磁场的分布,将电机槽子域分为通电槽和非通电槽,求解单槽通电下的泊松方程和拉普拉斯方程得到其电枢反应磁场,再叠加计算出三相电流下的电枢反应磁场。子域叠加模型简化了激励方式,减少了求解变量的数目,降低了求解的难度。以一台12槽表贴式永磁电机为例进行计算,并将解析法结果与有限元分析的结果进行比较,验证了本文提出方法的可行性和正确性。
Accurate calculation of the magnetic field of surface mounted PM machine is the key for designing and optimizing the machine. A subdomain superposition model is proposed to calculate the distribution of armature reaction magnetic field of surface mounted PM machine. In the proposed method,only one slot is excited and distinguished from other slots,so the different excitation method is applied to the Maxwell equations. Then the magnetic field generated by single slot can be calculated,and the total magnetic field of all three-phase current excitation is superposed. Subdomain superposition model facilitates the mode of excitation,reducing the amount of the variables and the difficulty of calculating. Taking a 12 slot surface-mounted permanent magnet machine as an example,the results computed by the analytical method are compared with finite-element method,which prove the feasibility of the method.
出处
《电工电能新技术》
CSCD
北大核心
2017年第1期10-15,共6页
Advanced Technology of Electrical Engineering and Energy
关键词
永磁电机
电枢反应
磁场分析
子域模型
解析法
permanent magnet machine
armature reaction
magnetic field analysis
subdomain model
analytic method
