Title :
Online Detection of High-Resistance Connections in Multiphase Induction Machines
Author :
Mengoni, Michele ; Zarri, Luca ; Tani, Angelo ; Gritli, Yasser ; Serra, Giovanni ; Filippetti, Fiorenzo ; Casadei, Domenico
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng. “G. Marconi”, Univ. of Bologna, Bologna, Italy
Abstract :
High-resistance connections in electrical machines cause unbalances in the stator resistances, reduce the efficiency, and increase the fire hazard. In this paper, the problem of detection of high-resistance connections is investigated for multiphase induction machines with an odd number of phases. The main contribution of this paper is a control scheme that can determine the stator resistance unbalance of all phases, under transient and steady-state operating conditions. The theoretical analysis and the feasibility of the control scheme are confirmed by experimental tests.
Keywords :
condition monitoring; fault diagnosis; induction motor drives; machine control; stators; variable speed drives; condition monitoring; efficiency reduction; electrical machines; fault detection; fault diagnosis; high-resistance connection online detection; increase fire hazard; induction motors; multiphase induction machines; stator resistance unbalance; steady-state operating conditions; transient operating conditions; variable-speed drives; Induction motors; Resistance; Rotors; Stator windings; Vectors; Condition monitoring; fault detection; fault diagnosis; induction motors; variable-speed drives;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2357439
