Cause and analysis of stator and rotor failures in three-phase squirrel-cage induction motors

Bonnett, A.H.; Soukup, G.C.

doi:10.1109/28.148460

Cited by 535 publications

(227 citation statements)

References 6 publications

Supporting

Mentioning

196

Contrasting

Unclassified

Order By: Relevance

“…The main cause of winding faults is the degradation of the insulation [1]. Although the ageing process and the surface contamination are causes of degradation, the vibration is the major cause of premature degradation.…”

Section: On-line Stator Winding Fault Diagnosismentioning

confidence: 99%

On-line stator winding fault diagnosis in induction generators for renewable generation

Albizu

Tapia

Sáenz

et al. 2004

Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)

View full text Add to dashboard Cite

Abstract-Renewable generation systems are increasing its presence in electrical power systems. For this reason, it is more important than ever to count with reliable and secure generation systems. In this way, the use of on-line diagnostic techniques in the maintenance schemes can be useful. This paper is about on-line condition monitoring in induction generators for small hydro stations and wind farms. In particular, stator winding fault diagnosis is analyzed. Currently, there are diagnostic techniques that are used in induction motors, but they could be used in generators as well. This paper analyzes the induction generator characteristics and describes the appropriate diagnostic techniques. These techniques depend on the machine voltage. As most of the induction generators are low voltage machines, the diagnosis of stator winding faults will be based on the detection of inter-turn short circuits. Most of the inter-turn short circuit diagnostic techniques are noninvasive as they are based on voltage and line current monitoring.I. INTRODUCTION Renewable energy generation, particularly energy from wind, water, solar power and biomass is a central object of current energy policies. Renewable energy has an important role to play in reducing CO 2 emissions. It also helps to improve the security of energy supply by reducing the dependence on imported energy sources. Renewable energy sources are expected to be economically competitive with conventional energy sources in the medium to long term.Several types of electrical power generation sources are emerging with different degrees of development and future prospective but currently, wind generation is increasing its presence in an amazing way, due to several characteristics: the production has zero fuel cost, it is environmentally clean and the total energy production can be quite important. Hence, wind energy has turned out to be one of the most important and promising sources of renewable energy. The installed wind power increase expectations for the next few years are high. This energy source will represent a significant proportion of total installed power in the power system. Small hydro is a proven technology, which has now reached maturity. Ideal for electrification of remote sites, it also serves as a complement to national electrical production in the case of strong demand and consumption.Both wind and hydro systems convert renewable energy into mechanical energy first and into electrical energy afterwards. The electric generators can be either asynchronous or synchronous.

show abstract

Section: On-line Stator Winding Fault Diagnosismentioning

confidence: 99%

On-line stator winding fault diagnosis in induction generators for renewable generation

Albizu

Tapia

Sáenz

et al. 2004

Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521)

View full text Add to dashboard Cite

show abstract

“…In fact, stator insulation faults are the most expensive failures in electrical rotating machinery. 4) Independently of the cause of failure, and even if it begins with an interturn short-circuit, final result is always a phase to phase or phase to ground insulation fault that produces the machine stop [4,5]. Fault currents generated during the insulation fault have a negative influence on the power system since they produce heating, voltage sags, electrodynamic stresses, etc.…”

Section: )mentioning

confidence: 99%

Fault detection in the manufacturing process of form-wound coils by means of dissipation factor and hipotesis

Melero¹,

Cabanas²,

Rojas³

et al. 2009

REPQJ

View full text Add to dashboard Cite

Abstract.The resin rich process is quite commonly used in rewinding tasks of medium voltage rotating electric machines. This process involves the application of mica paper tapes, impregnated with epoxy resin, to the coils to be manufactured. These pre-impregnated tapes are then consolidated by confining coils in molds while applying heat and pressure. During the manufacturing processes defects may appear in the wrapping of the insulating tape. These defects can be caused by bad quality of the tape, irregularities and incorrect control of pressure or temperature during the pressing and curing process and errors during the manual wrapping process. As it will be analysed in this paper, these defects might not be detected by the usual electric tests applied in the quality control processes. As a consequence, the coil´s useful life, and its resistance to the different stresses applied to the machine during operation, would be reduced. Then, this paper presents a preliminary study carried out on form-wound coils with mica-epoxy insulation. Measurements obtained from electric tests, as dissipation factor or hipot tests, reveals that they are not able to detect some defects in the coil insulation.

show abstract

“…Various causes of stator and rotor failures have been presented and discussed in detail. A specific methodology is proposed to facilitate an accurate analysis of these failures [3]. An approach, based on the computer-aided monitoring of the motor current Park's Vector representation is presented in [4].…”

Section: Indexmentioning

confidence: 99%

A Novel Approach for Detection of Shorted Turns Fault in Machine Using Combination of Flux and Instantaneous Power Signal

Ahmed

b²,

Khan³

et al. 2011

IJCEE

View full text Add to dashboard Cite

Cause and analysis of stator and rotor failures in three-phase squirrel-cage induction motors

Cited by 535 publications

References 6 publications

On-line stator winding fault diagnosis in induction generators for renewable generation

On-line stator winding fault diagnosis in induction generators for renewable generation

Fault detection in the manufacturing process of form-wound coils by means of dissipation factor and hipotesis

A Novel Approach for Detection of Shorted Turns Fault in Machine Using Combination of Flux and Instantaneous Power Signal

Contact Info

Product

Resources

About