机械压力机伺服直驱式新型永磁电动机的设计与应用研究

Design and applied research on novel permanent magnet motors for servo direct driving mechanical press

为了研究用于机械压力机的伺服直驱式新型永磁电动机,对压力机传动机构的合理方式进行了探讨,从而确定对伺服直驱电机的性能要求。对各类新型永磁电动机分别进行介绍,确定适合于压力机伺服驱动的拓扑结构,并制作样机和电机性能测试平台以验证直驱电机的性能特性。研制了通用型伺服驱动器,对电机各相绕组电流进行独立控制,使磁阻转矩得到合理利用,同时提高了弱磁升速能力。讨论了压力机减速制动过程中能量储存的方式,并研制了外转子开关磁通永磁电机和飞轮一体式储能系统,使伺服压力机更好地展现了节能减排方面的优势。

In order to research the novel permanent magnet motors used for direct driving servo mechanical press, the appropriate transmission mechanisms of mechanical press were discussed, so that the performance requirements of servo driving motor were determined. Various permanent magnet motor were introduced respectively, the topology structures adapted to mechanical press servo driving were designed, and then motor prototype and performance testing platform were fabricated to verify the performance characteristics of direct driving mechanical press. General purpose servo driver was developed to independently control the current of each phase, which led to make use of reluctance torque and improve capability of field - weakening. Energy storage methods during braking process were discussed, and the integrated energy storage system combining flux switching motor and flywheel was designed, which could improve the superiority of me- chanical press on energy conservation.