永磁同步电动机转子优化设计与研究  

Optimal Design and Research on Rotor Structure of PMSM

作　　者：张涵[1] 谢宝昌[1] 丁烜明 应红亮 

机构地区：[1]上海交通大学,上海200240 [2]上海电驱动股份有限公司,上海200240

出　　处：《微特电机》2015年第1期25-27,34,共4页Small & Special Electrical Machines

摘　　要：对内置式永磁同步电动机转子结构进行优化设计,目的是在电势常数受约束的条件下,使得单位电流下的峰值转矩最大。为减少有限元计算工作量,首先求得特定转子位置电枢绕组的直轴与交轴电感,以及空载磁链参数,随后根据dq系统数学模型求得给定电流时的最大转矩和对应的电流相位角,随后在该电流相位角附近用瞬态有限元方法精确计算电机的最大转矩。总结了永磁转矩分量和磁阻转矩分量随转子设计参数的变化规律,最终的优化方案使峰值电流减少了3%。The rotor structure of an interior permanent magnet synchronous motor was optimized to maximize torque-to- current ratio under the constraint of a limited electric potential. In order to reduce the amount of finite element computation, d-axis inductance, q-axis inductance and no-load flux linkage of particular rotor positions were first obtained, then dq mathematical model was used to calculate the maximum torque and the corresponding current angle under given current. The accurate maximum torque was finally calculated near the obtained current angle by using transient finite element meth- od. The law of how permanent magnetic torque and reluctant torque change with design parameters of rotor was also summa- rized. The final optimized design reduced the peak current by 3%.

关 键 词：磁钢优化 电感计算 转矩计算 有限元分析 

分 类 号：TM351[电气工程—电机] TM341