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A Redundancy Optimization Model Applied to Offshore Wind Turbine Power Converters

Mahmood Shafiee (Institutionen för matematiska vetenskaper, matematik) ; Michael Patriksson (Institutionen för matematiska vetenskaper, matematik) ; Ann-Brith Strömberg (Institutionen för matematiska vetenskaper, matematik) ; Lina Bertling (Institutionen för energi och miljö, Elteknik)
PowerTech (POWERTECH), 2013 IEEE Grenoble p. 8article no 6652427). (2013)
[Konferensbidrag, refereegranskat]

Unexpected failures, high operation and maintenance (O&M) cost, and low accessibility are critical issues for offshore wind farms. According to existing statistics, power converters are among the most critical components in offshore wind turbines, and suffer from a high failure rate. One efficient way to improve the reliability and availability of the converter system is by adding at least one independent redundant converter, which ensures that the system would still operate in case of a converter failure. However, the redundant converters will increase the system’s cost, volume, and weight. In this paper, we propose a cost-rate minimization model aiming to simultaneously determine the optimal allocation of redundant converters and the optimal number of the converters that are allowed to fail before sending a maintenance crew to the offshore platform. The optimal solution under system-level constraints is derived, and the conditions required to make using redundant converter system beneficial are discussed. Finally, the proposed model has been tested on data collected from an offshore wind farm database and the results are compared with a conventional wind turbine converter system.

Nyckelord: Offshore wind turbine, Power converter, Reliability, Redundancy optimization, Maintenance



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Denna post skapades 2013-08-16. Senast ändrad 2016-11-30.
CPL Pubid: 181725

 

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Institutioner (Chalmers)

Institutionen för matematiska vetenskaper, matematik (2005-2016)
Institutionen för energi och miljö, Elteknik

Ämnesområden

Energi
Hållbar utveckling
Optimeringslära, systemteori
Elektroteknik och elektronik
Tillförlitlighets- och kvalitetsteknik

Chalmers infrastruktur