Portable acquisition and identification tool for induction machine diagnosis

• Published in: IEE conference publication pp. 515 - 520
• Main Authors: Teodorescu, R, Tataru, A.M, Lungeanu, F, Iov, F, Dumitriu, T
• Format: Conference Proceeding
• Language: English
• Published: London IEE 1998
• Subjects: Applied sciences; Asynchronous machines; Computerised instrumentation; Current measurement; Data acquisition equipment and techniques; Data acquisition systems; Electrical engineering. Electrical power engineering; Electrical machines; Exact sciences and technology; Power engineering computing; Regulation and control; Testing. Reliability. Quality control; Velocity, acceleration and rotation measurement; Voltage measurement; automatic test software; fault diagnosis; PCMCIA acquisition board; microcomputer applications; preventive maintenance; currents acquisition; induction machine; phase resistance increase; parameter estimation; data acquisition; speed acquisition; magnetic circuit ageing; triphase abc frame; automatic test equipment; database software processor; 486 notebook; machine fault diagnosis; signal conditioning module; asynchronous machines; parameters identification method; turn-to-turn short-circuits; machine theory; portable instrumentation; machine testing; voltages acquisition; squirrel-cage bar rupture; electrical faults detection; electric current measurement; velocity measurement; unbalanced supply voltages; voltage measurement; ABC Inventory; Induction machine; Parameter; d q Frame; Identification; Experimental study; Hybrid mode; Fault diagnostic
• ISBN: 0852967047; 9780852967041
• ISSN: 0537-9989
• DOI: 10.1049/cp:19980580

A new parameters identification method for induction machine electrical faults detection is presented in this paper. Typical evolving faults like: phase resistance increase caused by poor contacts; turn-to-turn short-circuits; unbalanced supply voltages; magnetic circuit ageing; and squirrel-cage bar rupture, are taken into consideration. A triphase abc frame it was taken into consideration for real phase parameters identification. In order to provide the electrical parameters, an identification technique based on currents, voltages and speed acquisition during transients (e.g. starting-up) has been developed on a portable acquisition and post-processing system. The proposed equipment includes a 486 notebook with PCMCIA acquisition board, current clampmeters, voltages probes and signal conditioning module and can be applied to any drive without interfering with operating conditions. Also, a database software processor was developed for storing and comparison against the reference set of each new parameter set identification, enabling a time evolution behaviour evaluation. The system can be successfully applied to both periodical preventive maintenance and the electrical parameters verification of repaired induction machines.