Implementation of a Scalar Controlled Induction Motor Drives

This paper presents design and implements a V/F control speed of induction motor. This scheme leads to be able to adjust the speed of the motor by control the frequency and amplitude of the stator voltage, the ratio of stator voltage to frequency should be kept constant, which is known as V/F or scalar control. The PI controller is applied to speed signal model of the inverter and is then downloaded to dSPACE through Simulink. The experimental results are analyzed and compared simulation in testing the 0.22 kW induction motor from no-load condition to rated condition, it´s found that the motor speed to be constant when the load varies, as shown the effectiveness of the proposed control scheme