Professor Christopher Crabtree's Outputs (7)

Impacts of Reliability on Operational Performance and Cost of Energy Evaluation of Multimegawatt, Far-offshore Wind Turbines (2019)
Presentation / Conference Contribution
Dao, C. D., Kazemtabrizi, B., & Crabtree, C. J. (2019, December). Impacts of Reliability on Operational Performance and Cost of Energy Evaluation of Multimegawatt, Far-offshore Wind Turbines. Presented at ASME 38th International Conference on Ocean, Offshore & Arctic Engineering (OMAE) 2019, Glasgow, UK

Wind energy is growing at a fast pace around the world. According to a report published by WindEurope, 55% of total power capacity installations in the EU came from wind in 2017. In this context, offshore wind plays a decisive role, with countries su... Read More about Impacts of Reliability on Operational Performance and Cost of Energy Evaluation of Multimegawatt, Far-offshore Wind Turbines.

Validation of a non-contact technique for torque measurements in wind turbines using an enhanced transient FSV approach (2019)
Journal Article
Zhang, G., Zappalá, D., Crabtree, C., Donaghy-Spargo, C., Hogg, S., & Duffy, A. (2020). Validation of a non-contact technique for torque measurements in wind turbines using an enhanced transient FSV approach. Measurement, 151, Article 107261. https://doi.org/10.1016/j.measurement.2019.107261

In-service turbine monitoring is essential for maximizing the wind energy contribution to the global energy budget. Measurement of turbine shaft torque under transient wind conditions is fundamental to develop reliable condition monitoring techniques... Read More about Validation of a non-contact technique for torque measurements in wind turbines using an enhanced transient FSV approach.

Modelling the Effects of Reliability and Maintenance on Levelised Cost of Wind Energy (2019)
Presentation / Conference Contribution
Dao, C. D., Kazemtabrizi, B., & Crabtree, C. J. (2019, December). Modelling the Effects of Reliability and Maintenance on Levelised Cost of Wind Energy. Presented at ASME Turbo Expo 2019, Phoenix, AZ, USA

Levelised cost of energy is an important measure to evaluate the success of a wind energy project. It includes all the capital and operational expenditures of a wind turbine over its lifetime based on the expected power generated. In the literature,... Read More about Modelling the Effects of Reliability and Maintenance on Levelised Cost of Wind Energy.

Wind Turbine Reliability Data Review and Impacts on Levelised Cost of Energy (2019)
Journal Article
Dao, C. D., Kazemtabrizi, B., & Crabtree, C. J. (2019). Wind Turbine Reliability Data Review and Impacts on Levelised Cost of Energy. Wind Energy, 22(12), 1848-1871. https://doi.org/10.1002/we.2404

Reliability is critical to the design, operation, maintenance, and performance assessment and improvement of wind turbines (WTs). This paper systematically reviews publicly available reliability data for both onshore and offshore WTs and investigates... Read More about Wind Turbine Reliability Data Review and Impacts on Levelised Cost of Energy.

Star Type Wireless Sensor Network for Future Distributed Structural Health Monitoring Applications (2019)
Journal Article
Meech, J., Crabtree, C., & Rácz, Z. (2019). Star Type Wireless Sensor Network for Future Distributed Structural Health Monitoring Applications. Inventions, 4(1), Article 6. https://doi.org/10.3390/inventions4010006

A star type wireless sensor network based on nine-axis micro-electromechanical inertial motion sensors with the potential to include up to 254 sensor nodes is presented, and an investigation into the mechanical and structural effects of bell ringing... Read More about Star Type Wireless Sensor Network for Future Distributed Structural Health Monitoring Applications.

Power Converter Junction Temperature Measurement using Infra-red Sensors (2019)
Journal Article
Smith, C., Zappalá, D., Crabtree, C., Lapiedra, J., & Mulholland, B. (2019). Power Converter Junction Temperature Measurement using Infra-red Sensors. Journal of Engineering, 2019(17), 4452-4456. https://doi.org/10.1049/joe.2018.8098

Studies demonstrate that the power converter has one of the highest failure rates in a wind turbine, with a key failure driver being the power module junction temperature ( T j ). This paper details an experimental setup for simplified emulation of w... Read More about Power Converter Junction Temperature Measurement using Infra-red Sensors.

Reliability and Economic Evaluation of High Voltage Direct Current interconnectors for large-scale renewable energy integration and transmission (2019)
Presentation / Conference Contribution
Thompson, A., Kazemtabrizi, B., Crabtree, C., Dao, C., Dinmohamdi, F., & Flynn, D. (2019, February). Reliability and Economic Evaluation of High Voltage Direct Current interconnectors for large-scale renewable energy integration and transmission. Presented at 15th IET International conference on AC and DC Power Transmission, Coventry, UK

This paper outlines a methodology for assessing the reliability and cost of operating multi-terminal High-Voltage Direct Current (HVDC) transmission interconnectors with a comparison being drawn on the benefits of using modular multilevel converters... Read More about Reliability and Economic Evaluation of High Voltage Direct Current interconnectors for large-scale renewable energy integration and transmission.