An original two‐step input‐output decoupling approach aimed at the design of a non‐linear controller/or induction machines is described. The resulting scheme is compared to both the non‐linear control by exact linearization and the classical field‐oriented vector control. The performance of the three controllers, which are implemented in discrete time, is evaluated and compared in the framework of a realistically simulated variable speed drive. The proposed approach provides excellent flux‐speed decoupling, and it allows for a straightforward and exact limitation of the machine currents. The latter represents the major advantage to most other non‐linear control schemes, where the inaccessibility of the currents, which prevents their correct limitation, is a mayor drawback.
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