矢量控制异步电机等效电路及其参数变化因素分析

The Analysis of Equivalent Circuit and Parameters Variations of Vector Control in Induction Motor

从异步电机T型等效电路的数学模型导出通用等效电路以及矢量控制用的不对称T型等效电路．指出等效电路中的励磁电流与矢量控制系统中的励磁电流是两种完全不同概念的物理量，但它们在数值上有一定的联系，同时分析了电机参数变化的因素．

The paper deduces a gencral equivalenl circuit and an unsymmetrical T style equivalent circuit used in vector control from the nlodel of T style equivalent circuit of induction motor. It points out that the exciting current in equivalent circuit and the exciting current controlled by vectors are totally different concepts of physical amounts , but there cxists a kind of connection between their numerical values. It also analyses the elements effecting variations in parameters of the motor.