摘要
根据机电能量转换原理和坐标变换理论,证明通过相坐标系到两相正交坐标系的变换异步电动机实现了变压器电动势和运动电动势作用的解耦;转子磁场定向不仅实现了电磁转矩和磁链的解耦,而且实现了转子变压器电动势和运动电动势的解耦;转矩控制可以通过控制转子运动电动势来实现;异步电动机变频调速可以归结为对转子运动电动势的控制。并进一步提出基于运动电动势控制的转子磁场定向控制系统,仿真结果证明该方法的动态性能与传统的矢量控制相同,为异步电动机的速度控制提供了一条有效途径。
According to the principle of electromechanical energy conversion and reference frame transformation theory, the function of transformer electromotive force （TEMF） and motional electromotive force （MEMF） is decoupled by transformation from phase reference frame to two-phase orthogonal reference frame. Rotor field-oriented decouples not only flux linkage and torque but also TEMF and MEMF in rotor. The control of torque and the variable-frequency induction motor drive can be achieved by control of MEMF in rotor. Furthermore, the rotor field-oriented control based on control of MEMF in rotor was proposed. The results of simulation show the proposed control method has the same dynamic performance as classical vector control. This provides an effective method for speed control of induction motors.
出处
《电工技术学报》
EI
CSCD
北大核心
2006年第11期15-20,共6页
Transactions of China Electrotechnical Society
基金
华北电力大学博士教师科研基金资助项目
关键词
异步电动机
机电能量转换
坐标变换
运动电动势
磁场定向
矢量控制
Induction motor, electromechanical energy conversion, reference frame transformation, motional electromotive force（MEMF）, field-oriented, vector control
