Implementation of a dSPACE-based digital state feedback controller for a speed control of wound rotor induction motor

This paper presents the performances of a linear control technique implemented on a state feedback to control speed of wound rotor induction motor using dSPACE along with the Matlab/Simulink tool. This scheme leads to be able to adjust the speed of the motor by control the firing angle of the twelve pulse line commutated converter. The converter operating as an inverter and then passed through the wye-wye and delta-wye transformer circuit in order to reduce harmonics of line current waveforms. The digital state feedback controller is applied to speed signal model of the slip energy recovery system and is then downloaded to dSPACE through Simulink. The experimental results are analyzed and compared simulation in testing the 0.22 kW wound rotor 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