摘要
采用空间矢量解耦的方法建立了缺相双三相异步电动机在静止坐标系下的数学模型。由于在与机电能量转换相关的d-q子空间中等效为一个不对称的两相电机,借助于进一步的等效转换,得到在同步坐标系中d-q子空间对应的电机对称两相模型。这为实现转子磁场定向矢量控制奠定了基础;并能准确控制双三相异步电动机在缺相时的动态特性。
The mathematical models of dual three phase induction motor in stationary reference frame were obtained, using the concept of vector space decomposition with loss of one stator winding excitation set. Because the motor was equivalent, from the point of view of electromechanical energy conversion, to a two phase motor with asymmetrical d -q windings, it must recur to further equivalent transformation to achieve mathematical models in the synchronous reference frame with symmetrical d -q windings. Under this condition it is possible to control the machine with field-oriented techniques and realize the dynamic properties precise control with unbalanced structure.
出处
《微电机》
北大核心
2009年第3期9-13,共5页
Micromotors
关键词
三相异步电动机
空间矢量解耦
数学模型
转子磁链定向控制
Three phase induction motor
Vector space decomposition
Mathematical model
Rotor flux-oriented control
