Detection of Stator Interturn Short-Circuit Faults in Inverter-Fed Induction Motors by Online Common-Mode Impedance Monitoring

The article proposes a proprietary approach to the diagnosis of induction motors allowing increasing the reliability of electric vehicles. This approach makes it possible to detect damage in the form of an inter-turn short-circuit at an early stage of its occurrence. The authors of the article describe an effective diagnostic method using the extraction of diagnostic signal features using an Enhanced Empirical Wavelet Transform and an algorithm based on the method of Ensemble Bagged Trees. The article describes in detail the methodology of the carried out research, presents the method of extracting features from the diagnostic signal and describes the conclusions resulting from the research. Phase current waveforms obtained from a real object as well as simulation results based on the field-circuit model of an induction motor were used as a diagnostic signal in the research. In order to determine the accuracy of the damage classification, simple metrics such as accuracy, sensitivity, selectivity, precision as well as complex metrics weight F1 and macro F1 were used.

Download Full-text

Model Predictive Controller Utilized as an Observer for Inter-Turn Short Circuit Detection in Induction Motors

IEEE Transactions on Energy Conversion ◽

10.1109/tec.2020.3048071 ◽

2020 ◽

pp. 1-1

Author(s):

Ilker Sahin ◽

Ozan Keysan

Keyword(s):

Induction Motors ◽

Short Circuit ◽

Model Predictive Controller ◽

Predictive Controller

Download Full-text

Unbalanced Three-Phase Induction Motors Starting and Arc Welding Machines Short-Circuit Modeling

IEEE Latin America Transactions ◽

10.1109/tla.2012.6418128 ◽

2012 ◽

Vol 10 (6) ◽

pp. 2241-2248

Author(s):

Marcel Chuma Cerbantes ◽

Waldemar Pereira Mathias ◽

Jose Roberto Sanches Mantovani

Keyword(s):

Arc Welding ◽

Induction Motors ◽

Short Circuit ◽

Circuit Modeling ◽

Three Phase

Download Full-text

Complex Electronic Protection for Low-voltage Three-phase Induction Motors

WSEAS TRANSACTIONS ON ELECTRONICS ◽

10.37394/232017.2020.11.2 ◽

2020 ◽

Vol 11 ◽

pp. 11-17

Author(s):

Gabriel Nicolae Popa ◽

Corina Maria Diniș

Keyword(s):

Induction Motors ◽

Low Voltage ◽

Short Circuit ◽

Electronic Devices ◽

General Purpose ◽

Two Phase ◽

Dc Voltage ◽

Electric Drives ◽

Normal Limits ◽

Three Phase

Low-voltage three-phase induction motors are most often used in industrial electric drives. Electric motors must be protected by electric and/or electronic devices against: short-circuit, overloads, asymmetrical currents, two-phase voltage operation, under-voltage, and over-temperature. To design the electronic protection currents, voltages and temperature must be measured to determine whether they fall within normal limits. The electronic protection was design into low capacity PLC. The paper presents the designs and analysis of complex electronic protection for general purpose low-voltage three-phase induction motors. The electronic protection has Hall transducers and conversion electronic devices for AC currents to DC voltages, AC voltages to DC voltage, temperature to DC voltage, a low capacity PLC, switches, motor’s power contactors, and signalling lamps has been developed. Experiments with complex electronic protection, for different faults are presented. The proposed protection has the advantages of incorporating all usual protections future for the low-voltage three-phase induction motors.

Download Full-text