A high performance svm-dtc scheme for induction machine as integrated starter generator in hybrid electric vehicles

The control of induction machine as integrated starter generator forms an interesting academic and practical solution for future 42VPowerNet in hybrid electric vehicles. In this paper, an alternative control method is proposed for induction machine, which enjoys the advantages of stator vector control and direct torque control and avoids some implementation difficulties of either of the two control methods. To obtain a fixed switching frequency and low torque ripple, the proportional-integral controllers and space vector modulation technique are used. Furthermore, by controlling the machine’s torque, the required DC-bus voltage can be regulated within the 42V PowerNet specifications.

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