Voltage fluctuation is one of the important types of power quality aspects originated from heavy fluctuating loads. This phenomenon can influence the behavior of induction motors, produce excessive vibration and increase the ohmic losses. In this paper a simplified model to evaluate the electrical characteristics of three phase induction motors under voltage fluctuation conditions will be prese...

The die cast rotor bars in production squirrel cage induction motors (SCIMs) are easily subjected to porosity or other defects production, which considerably affects the motors’ reliability and efficiency operation. Planar flux sensing coils have been investigated for defect detection of SCIM rotor. However, these types sensors cannot accurately evaluate severity broken bar. This article develo...

This paper presents an online trained Fuzzy logic system based on FPGA to fault detection of broken rotor bar for squirrel cage induction motor. Fuzzy logic approach may help to diagnose induction motor faults in remote site and transmit fault diagnosis (via GSM\GPRS cellular network technology) to maintenance office or a programmed cell phone. The motor current signal is analyzed through the F...

The development of electronic power components has allowed the increase induction machine performance. Indeed, monitoring squirrel cage motors driven through rectifiers and inverters been a major concern. This paper presents new method to diagnose combination inverter-machine faults. technic considers an auxiliary winding which is small coil inserted between two stator phases. It based on Lissa...

The object of this paper is the study of the noise produced by inverter-fed three-phase induction motors with squirrel-cage rotor. A wireless sensor network based measurement system is proposed, which gives the possibility of measuring the sound pressure virtually simultaneously in multiple points around the motor. In the case of inverter fed motors, the phenomena that lead to the production of...