摘要
采用空间矢量解耦的方法将定子缺相的双三相异步电机在静止坐标系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,得到在旋转同步坐标系d-q子空间中的对称两相电机。再用转子磁场定向矢量控制的方法建立电机的数学模型,讨论为保持定子的圆形旋转磁势而采用定子电流矢量调制的方法,最后进行仿真验证。
The mathematical models of dual three phase induction machine in stationary reference frame were obtained, using the concept of vector space decomposition with loss of one stator winding excitation set. Because the machine is equiv- alent, from the point of view of electromechanical energy conversion, to a two phase machine with asymmetrical d-q wind- ings,it must recur to further equivalent transformation to achieve models in the synchronous reference frame with symmetri- cal d-q windings. Under this condition it was possible to control the machine with field-oriented techniques and realized the stator current vector modulation to keep stator MMF round. These are verified by MATLAB simulation results.
出处
《微特电机》
北大核心
2009年第10期14-17,共4页
Small & Special Electrical Machines
关键词
双三相异步电动机
不对称运行
空间矢量解耦
数学模型
矢量调制
dual three phase induction machine
asymmetrical operation
vector space decomposition
mathematical model
vector modulation
