Ryan G. Coe
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View article: Frequency array and wave phase realizations for wave energy converter control optimization
Frequency array and wave phase realizations for wave energy converter control optimization Open
Vital to the progression of the wave energy industry is wave energy converter optimization which often relies on frequency-domain evaluations, utilized for efficiency as compared to time-domain. Despite being an integral factor in the resu…
View article: Powering the Woods Hole X-Spar Buoy with Ocean Wave Energy—A Control Co-Design Feasibility Study
Powering the Woods Hole X-Spar Buoy with Ocean Wave Energy—A Control Co-Design Feasibility Study Open
Despite its success in measuring air–sea exchange, the Woods Hole Oceanographic Institution’s (WHOI) X-Spar Buoy faces operational limitations due to energy constraints, motivating the integration of an energy harvesting apparatus to impro…
View article: Benchmark of numerical modeling approaches on the systematic performance evaluation of wave energy converters
Benchmark of numerical modeling approaches on the systematic performance evaluation of wave energy converters Open
Different numerical modeling methods have been developed and applied to evaluate a variety of performance indicators of wave energy converters (WECs), including the power performance, structural loads, levelized cost of energy, etc. Based …
View article: Powering the Woods Hole X-Spar Buoy with Ocean Wave Energy - A Control Co-Design Feasibility Study
Powering the Woods Hole X-Spar Buoy with Ocean Wave Energy - A Control Co-Design Feasibility Study Open
Despite its success in measuring air-sea exchange, the Woods Hole Oceanographic Institution’s (WHOI) X-Spar Buoy faces operational limitations due to energy constraints, motivating the integration of an energy harvesting apparatus to impro…
View article: A Portable Wave Tank and Wave Energy Converter for Engineering Dissemination and Outreach
A Portable Wave Tank and Wave Energy Converter for Engineering Dissemination and Outreach Open
Wave energy converters are a nascent energy generation technology that harnesses the power in ocean waves. To assist in communicating both fundamental and complex concepts of wave energy, a small-scale portable wave tank and wave energy co…
View article: Real-Time Sea State Estimation for Wave Energy Converter Control via Machine Learning
Real-Time Sea State Estimation for Wave Energy Converter Control via Machine Learning Open
Wave energy converters (WECs) harness the untapped power of ocean waves to generate renewable energy, offering a promising solution to sustainable energy. An optimal WEC control strategy is essential to maximize power capture that dynamica…
View article: Tubular wave power device
Tubular wave power device Open
A tubular wave energy converter configured to remain afloat near the surface of a wave field and trap a water column oscillating asymmetrically to the wave field in which the converter is located. Water column oscillations create a pressur…
View article: Analysis on Evaluations of Monterey Bay Aquarium Research Institute’s Wave Energy Converter’s Field Data Using WEC-Sim and Gazebo: A Simulation Tool Comparison
Analysis on Evaluations of Monterey Bay Aquarium Research Institute’s Wave Energy Converter’s Field Data Using WEC-Sim and Gazebo: A Simulation Tool Comparison Open
Although many studies have validated wave energy converter (WEC) numerical models against scaled prototype experimental data, there remains a notable lack of validation using data from full-scale deployed WECs. This paper compares two nume…
View article: Bench testing of an early prototype pitch resonator WEC
Bench testing of an early prototype pitch resonator WEC Open
This report describes a series of tests performed on a "pitch resonator'" concept for a wave energy converter. The overall testing campaign goals centered on risk reduction for the pitch resonator wave energy converter concept and model va…
View article: Theory, Analysis, and Testing of an Angular Resonator for Wave Energy Generation
Theory, Analysis, and Testing of an Angular Resonator for Wave Energy Generation Open
This article describes the theory, analysis, and initial bench-top testing of a minimally invasive, rotational resonator designed to produce small amounts of electrical energy for use in oceanic observation buoys. This work details the sys…
View article: Wave Energy Converter Power Take-Off Modeling and Validation From Experimental Bench Tests
Wave Energy Converter Power Take-Off Modeling and Validation From Experimental Bench Tests Open
This article describes the implementation of a new numerical model of the power take-off system installed in the Monterey Bay Aquarium Research Institute wave energy converter, a device developed to provide power to various oceanic researc…
View article: MASK4 Test Report
MASK4 Test Report Open
Wave energy converters (WECs) are designed to produce useful work from ocean waves. This useful work can take the form of electrical power or even pressurized water for, e.g., desalination. This report details the findings from a wave tank…
View article: Bench Testing Data and Report for an Early Prototype Pitch Resonator WEC
Bench Testing Data and Report for an Early Prototype Pitch Resonator WEC Open
This dataset encompasses data and documentation from bench tests conducted on an early prototype of a "pitch resonator" wave energy converter (WEC). The testing aimed to validate numerical models and reduce risks associated with the pitch …
View article: Self-tuning wave energy converter (WEC) controller for changing sea states
Self-tuning wave energy converter (WEC) controller for changing sea states Open
Systems and methods for a WEC controller that uses a self-tuning proportional-integral control law prescribing motor torques to maximize electrical power generation and automatically tune the controller to maximize power absorption. In an …
View article: Pioneer WEC concept design report
Pioneer WEC concept design report Open
The “Pioneer WEC” project is targeted at developing a wave energy generator for the Coastal Surface Mooring (CSM) system within the Ocean Observatories Initiative (OOI) Pioneer Array. The CSM utilizes solar photovoltaic and wind generation…
View article: Maximizing Wave Energy Converter Power Extraction by Utilizing a Variable Negative Stiffness Magnetic Spring
Maximizing Wave Energy Converter Power Extraction by Utilizing a Variable Negative Stiffness Magnetic Spring Open
Complex conjugate impedance matching is a key concept for wave energy converter design. Matching the impedance of the power take-off (PTO) system to the complex conjugate of the wave energy converter's (WEC) impedance ensures efficient tra…
View article: Control Co-Design of Power Take-Off Systems for Wave Energy Converters Using WecOptTool
Control Co-Design of Power Take-Off Systems for Wave Energy Converters Using WecOptTool Open
Improved power take-off (PTO) controller design for wave energy converters is considered a critical component for reducing the cost of energy production. However, the device and control design process often remains sequential, with the spa…
View article: Hardware-in-the-loop testing of a hydraulic wave energy power take-off system
Hardware-in-the-loop testing of a hydraulic wave energy power take-off system Open
This report describes testing conducted related to the development of a “hydrostatic power takeoff” (HPTO) system for a wave energy converter. Tests were conducted with an experimental electric motor rig to provide preliminary results and …
View article: Pseudo-spectral method to control three-degree-of-freedom wave energy converters
Pseudo-spectral method to control three-degree-of-freedom wave energy converters Open
The invention provides optimal control of a three-degree-of-freedom wave energy converter using a pseudo-spectral control method. The three modes are the heave, pitch and surge. A dynamic model is characterized by a coupling between the pi…
View article: Useful Power Maximization for Wave Energy Converters
Useful Power Maximization for Wave Energy Converters Open
Wave energy converters (WECs) have enormous potential in providing clean renewable energy with high levels of predictability [...]