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Wind turbine generator winding failure

What Do Wind Generator Failures Really Look Like?

The findings in this research attributed 32% of those generator failures to bearing failures; 19.6% to stator wedges; 17% to rotor faults, (including connections); and 11% to stator-winding shorts. (Editor''s Note: Led by Shermco''s Kevin Alewine, this study was published by the American Wind Energy Association [AWEA] in 2016.)

Magnetic wedge failures in wind turbine generators

Reviewed in this paper will be several wind turbine generator applications where this is a common failure mode, some possible weaknesses in the design of the coil/slot configurations and some possible solutions to avoid a repeat failure after repair. A review of electrical winding failures in wind turbine generators. K. Alewine William Chen

Wind Turbine Generator Maintenance: What to Expect and Why

Including current production and the many new projects under way, U.S. wind energy peak capacity should pass 75,000 MW nameplate capacity by the end of 2015, according to the American Wind Energy

Preventive Maintenance and Fault Detection for

Shipurkar U, Ma K, Polinder H, Blaabjerg F, Ferreira JA. A review of failure mechanisms in wind turbine generator systems. In: 17th European Conference on Power Electronics and Applications (EPE''15 ECCE

Electrical & mechanical diagnostic indicators of wind turbine

Wind turbine generator failure modes analysis and occurrence. Proc. Windpower, Dallas, Texas (May 2010) [13] K. Alewine, W. Chen. A review of electrical winding failures in wind turbine generators. Proc. IEEE Electrical Insulation Conference (EIC), Annapolis, MD, USA (June 2011), pp. 392-397. Crossref View in Scopus [14] J. Carroll, A

Why wind generators die young and how to make them work

WMEP states that 0.15 failures/turbine/year, with an average of six days per failure have been found to rise significantly as the wind turbine ages. Data published by Alewine and Chen[5] says that the cause of failure in generators is assumed evenly split between bearing and winding-insulation failures.

Methods to improve wind turbine generator bearing temperature imbalance

A wind turbine generator reliability study is performed and explained in this paper. The study was performed due to the findings by Shipurkar et al. (2015), Alewine et al. (2012), and Liu et al. (2018) that bearing failure to be the main cause of generator failure. Another main reason for performing this research is the recent finding of the new IEEE Standard 841

Wind turbine generator failure analysis and fault diagnosis: A

According to a survey funded by Allianz Insurance, for medium and high voltage motors, stator winding failures accounted for 66 % $%$ of the total number of failures ; the IEEE working group published data on generator failures in 1979, showing that stator windings Winding insulation problems account for 40 % $%$ of shutdown faults ; the survey by the Commission

Wind turbine generator failure analysis and fault diagnosis: A

The large scale deployment of modern wind turbines and the yearly increase of installed capacity have drawn attention to their operation and maintenance issues. The development of highly

Overview of major faults in wind turbine components

According to the data, the percentage of structural failures is considerably lower than blade failures. The maximum number of wind turbine blade failures occurred in 2013, while the minimum number

Comparative Analysis of Bearing Current in Wind

Bearing current problems frequently appear in wind turbine systems, which cause wind turbines the break down and result in very large losses. This paper investigates and compares bearing current problems in

Wind Turbine Generator Reliability Analysis To Reduce Operations

Wind turbine generator failures are one of the primary reasons for increased operations and maintenance (O&M) costs and generation asset downtime. Generator issues continue to

Wind turbine generator failure analysis and fault diagnosis: A

Fan or heater failures accounted for 7.9 % $%$, while winding failures accounted for 7.1 % $%$. 4.2 % $%$ of failures with generator temperature abnormalities were attributed to other causes [12, 13]. With the enhancement of wind power generator capacity, the scale of the generator gradually increases, while the sealing protection of the

Methods to improve wind turbine generator bearing

Alewine K, Chen W (2012) A review of electrical winding failures in wind turbine generators. IEEE Electrical Insulation Magazine 28(4): 8–13. Crossref. Google Scholar. Asefi M, Nazarzadeh J (2018) A fast transient model for bearing fault analysis in induction machine drives. IEEE Sensors Journal 19(5): 1897–1904.

A review of electrical winding failures in wind turbine generators

Understanding the types of failures and how often they might occur in a fleet of turbines is instrumental to developing a proper maintenance procedure and testing regimen. By reviewing

Reliability evaluation of permanent magnet synchronous generator

At a certain wind speed, the failure rate of the wind power plant is calculated by summation the failure rates of the composed components in that speed and given in Figure 17. The output power of the understudied wind turbine during 2017 by considering the wind speed data of Manjil region is determined and presented in Figure 18. For adequacy

A review of electrical winding failures in wind turbine generators

A quantitative review of the failure modes of over 1200 wind turbine generators repaired or replaced since 2005 has uncovered that fewer that half of the failures were electrical in nature and most of those were due to mechanical failures of the insulation support structure. In this paper, we will discuss briefly the overall failures and, in more depth, the nature of the

Active power optimisation for wind farms under generator

Inter-turn short-circuit fault of the stator winding is one of the most common faults of asynchronous generators and often found in doubly-fed wind turbines. The study contributes to reduce the maintenance costs of wind farms and improve the operational capability of the wind turbine under fault conditions. The failure rate of offshore

Wind Turbine Failures Review and Trends | Journal of Control

This article presents a standardized analysis of failures in wind turbines concerning the main technologies classified in the literature, as well as identifies critical components and trends for the most modern wind farm facilities, which seek greater efficiency, robustness and reliability to mitigate failures and reduce wind turbine downtime. Through the

Most common reasons for wind turbine failures

Wind turbines are exposed to the elements and the persistent onslaught of mother nature 24/7, 365 days a year. A range of studies over the years links climatic conditions to internal and external wind turbine failure, both in direct-drive and geared-drive wind turbines to

Preventive Maintenance and Fault Detection for Wind Turbine Generators

Fault diagnosis and preventive maintenance techniques for wind turbine generators are still at an early stage compared to matured strategies used for generators in conventional power plants.

A review of electrical winding failures in wind turbine generators

Abstract: A quantitative review of the failure modes of over 1200 wind turbine generators repaired or replaced since 2005 has uncovered that fewer that half of the failures were electrical in

Wind turbine generator failure analysis and fault

In this article, a comprehensive and up-to-date review of wind turbine generators failure analysis and fault diagnosis are presented. First, the electrical and mechanical failures of various WTG components, including

Wind turbine generator failure analysis and fault diagnosis: A

ment of highly reliable and low-maintenance wind turbines is an urgent demand in order to achieve the low-carbon goals, and the arrival of fault diagnosis provides assurance for its satisfactory operation and maintenance. Numerous statistical studies have pointed out that generator failures are a main cause of wind turbine system downtime.

Internal electrical fault detection techniques in DFIG-based wind

Recent surveys of wind power plants have reported several failures including internal generator (stator and rotor), electrical system, control system, drive train, sensors, gear box, mechanical brake, hydraulics, yaw system, structure, hub and blades/pitch faults [].Generally, the main faults of electrical machines (DFIG) can broadly be classified as stator winding faults,

Analysis of Wind Turbine Equipment Failure and Intelligent

Power generation from wind farms is growing rapidly around the world. In the past decade, wind energy has played an important role in contributing to sustainable development. However, wind turbines are extremely susceptible to component damage under complex environments and over long-term operational cycles, which directly affects their

Rotor winding failure diagnosis in Wind Turbine Based on DFIG

A novel stator current-based failure diagnostic technique for the rotor winding inter-turn short-circuit fault in Doubly Fed Induction Generators(DFIG) is performed in this paper. The object of the online fault diagnosis is to enhance the condition monitoring, performance and reduce the downtime and maintenance costs of the wind turbine.

Fault Detection and Condition Monitoring of PMSGs in Offshore Wind Turbines

The generator is a reliable component of a wind turbine, but its failure causes long downtimes and high economic losses, which serves as motivation for developing CM methods. From a sample of more than 1200 wind turbine generators, most winding insulation failures were attributed to mechanical failure of the support structure.

Wind Turbine Generator Systems Failures

The reliability of wind turbines has improved over time. However, turbines still see failure rates of more than one failure per turbine per year [1]. The drivetrain of the turbine is a major contributor to failure rates with the power electronic converter, the generator and the gearbox account for about 0.2, 0.1 and 0.1 failures per

Exploring the Causes of Power-Converter Failure in Wind Turbines

Power converters are among the most frequently failing components of wind turbines. Despite their massive economic impact, the actual causes and mechanisms underlying these failures have remained in the dark for many years. In view of this situation, a large consortium of three research institutes and 16 companies, including wind-turbine and

Wind turbine generator winding failure [PDF]

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