ABSTRACT
This paper presents initial findings from the application of Variation Mode and Effect Analysis (VMEA) to two tidal energy devices, in the context of the MONITOR (Multi-Model Investigation of Tidal Energy Converter Reliability) project. VMEA is an engineering tool used to identify and understand sources of variation or uncertainty, which could affect reliability of a device or component. Understanding and controlling sources of variation can allow identification of methods to reduce their impact and improve reliability. In this work we consider uncertainties affecting loading on the blades of tidal turbines. Results from tank scale testing of two different turbines are used to investigate the sensitivity of blade loading to a range of uncertainties, including inflow velocity, turbulence intensity, operating speed, and blade geometry. Initial learnings from the application of VMEA to tidal devices are discussed.
