Abstract：This paper proposes a double compound manifold sliding mode observer (SMO) used to update the rotor resistance of induction motor online, with the aim to improve the performance of the indirect field oriented vector control. The observer is implemented in the stationary reference frame, though it is analyzed and designed in the rotor field oriented synchronous reference frame. By this means, the essence of the compound manifold is feasible to be revealed clearly, the shortcoming of the single compound manifold SMO is feasible to be exposed, the new double compound manifold SMO is feasible to be derived out naturally, and all of these finally contribute to the theory for the compound manifold SMO. Through simulation and experimental results, the analysis is validated, and the convergence, accuracy, parameter robustness, and dynamic performance of the designed double compound manifold SMO are demonstrated.
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2018, Vol. 33 
