| 摘要 |
PURPOSE:To control speed and flux stably even if q-axis flux component is not brought to 0 due to unclear induction motor coefficient or disturbance, by configuring a speed/flux controller into a non-linear multi-variable system. CONSTITUTION:Coefficient units 10, 11, 12, 13, 14, 15, 16 are provided with values of K1, K2, K3 and M. The value M represents the mutual inductance between a stator winding and a rotor winding. d-axis current command I'1d, q-axis current command I'1q and angular frequency command omegaS are outputted respectively from a d-axis root value subtractor 21, a q-axis adder 23 and the coefficient unit 16. The outputs I'1d and I'1q from a speed/flux control section are controlled non-linearly with the product of flux and speed is being fed back. |
