Detecting Rotor Asymmetries with Variable Speed Drive at Standstill

JORDI, BURRIEL-VALENCIA and JUAN, PEREZ-CRUZ and MANUEL, PINEDA-SANCHEZ and MARTIN, V. RIERA-GUASP and RUBEN, PUCHE-PANADERO (2016) Detecting Rotor Asymmetries with Variable Speed Drive at Standstill. In: Fourth International Conference on Advances in Mechanical and Automation Engineering - MAE 2016, 18-19 August 2016, Rome, Italy.

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The diagnosis of Induction Motors (IMs) is crucial to avoid unexpected economic losses due to their failures. To reduce the cost associated to its maintenance, a recent trend is the integration of diagnostic procedures in the electronic equipment that control the motor, such as variable speed drives (VSD)s. This paper presents a new methodology to detect rotor asymmetries and unbalanced contact resistances in IMs fed from VSDs, at standstill. The proposed approach is a non-invasive technique, can be executed on-line, and is not expensive because this method does not need extra hardware or additional sensors. Besides, the results of the proposed diagnostic method are presented in a very graphical and easy to understand way, alike to a dartboard, which makes it easily understandable by non-qualified personal maintenance. The proposed methodology is validated experimentally with a commercial induction motor with different rotors, both healthy and faulty.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Induction machines, fault diagnosis, condition monitoring, motor current signature analysis, digital signal processor (DSP), field programmable gate array (FPGA), broken rotor bar
Depositing User: Mr. John Steve
Date Deposited: 22 Mar 2019 08:16
Last Modified: 22 Mar 2019 08:16

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