A new sensorless field-oriented control for Six-Phase Induction Machines

In this paper, a new sensorless vector control technique for six-phase induction machines (SPIM) is presented. The machine has two three phase stator windings spatially shifted by 30 electrical degrees. The classical vector control of SPIM is employed. The proposed sensorless method does not require flux and speed estimators, it uses only difference between stator currents of the mathematical model and motor, then forces them to decay to zero. The proposed method, then forces them to decay to zero. The proposed method, comparing to some traditional techniques, is simpler and does not need high computation time. The simulation results show that the closed-loop system performances are satisfactory using the proposed method.

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