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Adaptive control method for an induction motor with improved characteristics during regenerating mode

In this paper, the use of an adaptive control method for an induction motor is described. Using the conventional adaptive control method, it is possible to stably estimate the inverse time constants (both primary and secondary) during the powering mode. However, it becomes unstable during the regenerating mode. To solve this problem, there is a method that changes the adaptive control gain in the regenerating mode to make the control stable. This paper proposes an adaptive control method that can stably estimate the inverse time constant without affecting the driving mode. The principle of the proposed method is explained and the simulation results are shown.