Current Signature Analysis as Diagnosis Media for Incipient Fault Detection

Abstract

This paper focuses on the experimental investigation for incipient fault detection and fault detection methods existing in the literature, using Wound Rotor Induction Machine (WRIM). Three main experiments (one for stator phase unbalance, one for rotor phase unbalance and one for turn-to-turn faults) have been performed to study the electrical behavior of the WRIM. The article aims to provide further documentation for an advanced condition monitoring system, in order to avoid undesirable operating conditions and to detect and diagnose incipient electrical faults. A description of the measurement system and experimental investigation are presented and stator and rotor currents spectrum of the WRIM are analyzed.

Keywords

• back-to-back converter
• current signature analysis
• fault detection methods
• incipient faults