| 摘要 |
In a torque control system of an induction motor having m phase stator windings and P poles there are provided a torque instructor and a phase n voltage Vns generator responsive to a torque instruction given by the torque instructor to calculate the phase n voltage according to the following equation. <IMAGE> +TR <IMAGE> where <IMAGE> m: number of phases, n: 1, 2, . . . , m, P: number of poles, Io: constant exciting current (ampere), rs, rr, lr and lm: constants inherent to the induction motor, theta : rotor rotational angle (radian) of the induction motor, and I2: instructed rotor current (ampere) proportional to an instructed torque. |
