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Motor fault detection using a Rogowski sensor without an integrator
Poncelas, O; Rosero García, Javier Alveiro; Cusido Roura, Jordi; Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. MCIA - Centre MCIA Innovation Electronics
This paper presents a new approach for the current acquisition system in motor fault detection applications. This paper includes the study, design, and implementation of a Rogowski coil current sensor without the integrator circuit that is typically used. The circuit includes an autotuning block able to adjust to different motor speeds. Equalizing the amplitudes of the fundamental and fault harmonics leads to higher precision current measurements. The resulting compact sensor is used as a current probe for fault detection in induction motors through motor current signal analysis. The use of a Rogowski coil without an integrator allows a better discrimination of the fault harmonics around the third and fifth main harmonics. Finally, the adaptive conditioning circuit is tested over an induction machine drive. Results are presented, and quantitative comparisons are carried out.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria mecànica::Motors
Motor current signal analysis
Motor dirve
info:eu-repo/semantics/publishedVersion
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