Operation and maintenance modelling for multi rotor systems: bottlenecks in operations

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)
18 Downloads (Pure)


As the installed capacity of individual turbines increases, so do costs associated with manufacture and maintenance. One proposed solution to this problem is the Multi-Rotor System (MRS) which utilises many small rotors to yield the same energy capture as a single large turbine. The operational advantage of the MRS is the built in redundancy between rotors on the same structure. However, despite this advantage, an increase in number of components is likely to result in an increase in transfers. This work examines the balance between additional crew and vessel requirements for such a structure against the expected savings in downtime due to redundancy and small rotor power rating. Three scenarios are analysed to determine the distribution of the failures which contribute to downtime. The study aims to find the optimal vessel fleet which limits downtime without drastically increasing direct operational expenditure (OpEx). As site size increases, the impact of global failures, which shut down the whole asset, is lessened. However, there is a significant increase in the number of vessels required to reduce downtime to <10% of the total OpEx. While a large fleet can offer significant downtime savings, there are practical limitations and challenges which must be acknowledged.

Original languageEnglish
Article number042059
Number of pages10
JournalJournal of Physics: Conference Series
Issue number4
Publication statusPublished - 1 May 2022
EventThe Science of Making Torque from Wind - TU Delft, Delft, Netherlands
Duration: 1 Jun 20223 Jun 2022
Conference number: 9th


  • operation
  • maintenance
  • multi rotor systems
  • bottlenecks
  • operations
  • multi-rotor system (MRS)
  • operational expenditure (OpEx)


Dive into the research topics of 'Operation and maintenance modelling for multi rotor systems: bottlenecks in operations'. Together they form a unique fingerprint.

Cite this