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The motor speed of an induction machine can be accurately estimated by utilizing speed-dependent harmonics in the stator current. This paper presents a PLL-based approach to identify one of these harmonics and reduce bandwidth-limiting filtering operations. Experimental results show the ability for tracking dynamic speed transitions.
An important alteration of the equivalent loads profile has been observed in the electrical energy distribution systems, for the last years. Such fact is due to the significant increment of the electronic processors of electric energy that, in general, behave as nonlinear loads, generating harmonic distortions in the currents and voltages along the electric network. The effects of these nonlinear...
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