摘要
三相异步电动机转差率 s 改变时,稳态向量图上 I_2′端点的轨迹为一圆,分析该圆可以得到变频调速各种方案在稳态时的机电磁关系。
A circle diagram is deduced for the variating frequency speed control system of the induction motor.It is applicable to the steady analysis of all kinds of VF speed control systems,such as Variate Frequency Variate Velo- city Vector Control (VVVF),Slip Frequency Control,Keeping Gap Magne- tic Flux Constant or Rotor Magnetic Flux Constant,etc.
关键词
异步电动机
变频调速
圆图
Circle Diagram
Variate Frequency Variate Velocity Vector Control (VVVF)
Mechanical Characteristics
