内置式永磁同步电机弱磁调速控制  

Speed Control of Flux Weakening on Interior Permanent Magnet Synchronous Motors

作　　者：白玉成[1,2] 唐小琦[2] 吴功平[1] 

机构地区：[1]武汉大学动力与机械学院,武汉430072 [2]华中科技大学机械学院国家数控工程技术研究中心,武汉430074

出　　处：《电工技术学报》2011年第9期54-59,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50875099);国家973计划(2005CB724101)资助项目

摘　　要：在对内置式永磁同步电机数学模型深入研究基础上,提出了一种最优弱磁路径控制策略,该控制策略是基于由直轴电流Id和交轴电流Iq所构成的状态空间,以最大电流曲线、最大磁链曲线和最小磁链转矩比曲线为边界而提出的一种最优弱磁路径。该控制策略以实现在电机任何转速下输出力矩范围最大化和电机电枢电流最小化为目标,指出了电机在各种转速下的力矩控制方法,充分挖掘电机的自身潜能,有效保证高速高精型数控机床的加工运行。仿真和实验研究表明,该控制策略可以大大提高电机的调速范围,同时保证转矩有良好的可控性。A kind of control strategy of optimal flux weakening path is put forward based on depth research on mathematical model of interior permanent magnet synchronous motors（IPMSM）.This control strategy is carried out based on the state space of direct axis current（Id） and quadrate axis current（Iq） and boundary curve such as the maximum current curve,the maximum flux curve and the minimum rate of flux and torque.This control strategy aims at the maximum torque range and the minimum wingding current at any motor running speed.The torque control method at any running speed is also put forward to development the motor potential,which would ensure high-speed and high-precision machine.The simulation experiment and prototype experiment are carried out.The experiment result shows that the control strategy can extend IPMSM speed range,and ensure the controllability of torque.

关 键 词：内置式 永磁同步电机 弱磁 调速 控制 

分 类 号：TM351[电气工程—电机]