力矩电机的弱磁控制策略  

Flux-weakening Control Strategy for Torque Motors

作　　者：王玉凯[1] 曾理湛[1] 李小清[1] 王俊[1] 金建新[1] 

机构地区：[1]华中科技大学,武汉430074

出　　处：《微电机》2012年第7期40-44,共5页Micromotors

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB724205);国家高技术研究发展计划(863计划)资助项目(2007AA04Z251)

摘　　要：介绍了力矩电机直接传动在起重机提升机构中的应用,针对提升机构的快速下放控制,分析了力矩电机弱磁调速控制原理以及影响其运行范围的主要因素,考虑dq轴电流环限幅参数的影响,提出了一种基于改进电流环的电压外环弱磁控制策略。结合空间矢量脉宽调制(SVPWM)过调制算法,进一步扩大了弱磁调速运行范围。最后利用STM32微控制器实现了力矩电机弱磁调速控制系统,并通过实验验证其有效性。This paper introduced the application of direct-drive low-speed torque motors in cranes.To achieve the rapid down control of cranes,the principle of flux-weakening control of torque motors and its main influencing factors were analyzed.Considering the effects of the amplitude limit parameters in dq axis current loop,the voltage-loop flux-weakening control scheme based on the improved current-loop was proposed.Then,the operating region of flux-weakening speed control for the torque motors was further extended with the overmodulation algorithm of SVPWM.The proposed flux-weakening speed-control system of the torque motors was realized by STM32 microcontroller,and it was verified with experiments.

关 键 词：力矩电机 弱磁控制 电流环 过调制算法 

分 类 号：TM359.6[电气工程—电机]