This paper presents a direct predictive control scheme without current sensor for induction motor drives. The control scheme includes a double-loop system with a speed loop controller adopting proportional-integral algorithm and a current loop controller adopting direct predictive control algorithm. The future values of stator currents are predicted by motor model. Then, the voltage vector which minimizes a designed cost function is selected and applied to the inverter. This scheme can reduce the cost by replacing the actual sampled current by current sensor with the predicted current. A simulation study is performed in order to verify the feasibility and the performance with external disturbances of the proposed method. Furthermore, the scheme is successfully implemented on the experimental platform.
Current sensorless direct predictive control for induction motor drives
01.08.2017
1500020 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch