Effects of rotor bar and end-rings faults over the signals of a position estimation strategy for induction motors

G. BOSSIO; C. DE ANGELO; J. SOLSONA; G. GARCÍA; M. I. VALLA

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS

IEEE

Año: 2005 vol. 41 p. 1005 - 1012

0093-9994

The effect of rotor faults, such as broken bars andend-rings, over the signals of a position estimation strategy for inductionmotor drives is analyzed using a multiple coupled circuitmodel. The objective of this analysis is to establish the possibilityof using the estimation strategy signals for fault diagnosis in variable-speed electric drives. This strategy is based on the effect producedby inductance variation on the zero-sequence voltage, whenexciting the motor with a predefined inverter switching pattern.Experimental results illustrate the feasibility of the proposal.