新型数控转台双转子永磁环形力矩电机设计

Design of Novel Dual-rotor Permanent Magnet Ring Torque Motor for NC Rotary Table

为提高电机转矩密度,研究了一种直接驱动式新型数控转台双转子永磁环形力矩电机,以适应数控机床作业空间有限的要求。定子绕组采用串联背绕的绕线方式。采用近极槽数的特殊集中分数槽绕组解决了电机多极数,低转速情况下电机极、槽配合的矛盾。通过有限元分析方法对电机性能进行分析计算,电机保持较高的绕组系数,验证了电机具有较高的转矩密度,说明了所述设计方法的合理性和有效性。

In order to enhance motor torque density to meet the requirements of NC machine tools limited operating space, a novel dual-rotor permanent magnet ring torque motor for NC rotary table is researched. The two sets of stator coils are in series back-to-back wound. On conditioning that the motor has high pole number and low speed, the contradiction of slots and pole combination is improved by concentrated fractional slot winding. The rationality and validity of design methods is validated by finite element simulation. The winding coefficient is high. The simulation results show that novel dual-rotor permanent magnet ring torque motor for NC rotary table has higher torque density than common motor.