| Abstract |
Generally, a speed servo system of vector-controlled induction motor has a limitation of motor voltage
and motor current. When the speed servo system has a large torque reference, the output of its PI
controller is often saturated. In this case, the conventional servo system stops the integral calculation of
its PI controller. However, this system often has a large overshoot and/or an oscillated response caused
by both a windup phenomenon and phase error on vector control condition. This paper proposes a new
anti-windup control method for the speed servo system of vector-controlled induction motor. The proposed
method compensates the phase error on vector control condition, and always keeps the vector
control condition. The experimental results show that the proposed system well regulates a motor speed
and a motor secondary magnetic flux for a large torque reference without a windup phenomenon. |
