Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine

Cavagnaro, Robert J.; Neely, Jason C.; Fay, Franois-Xavier; Mendia, Joseba Lopez; Rea, Judith A.

doi:10.1109/TSTE.2015.2492943

Title: Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine

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Abstract

The use of controllable motor-generator sets to emulate the dynamics of a hydrokinetic turbine is evaluated as an alternative to field testing a prototype. The emulator control dynamic equations are presented, methods for scaling turbine parameters are examined, and experimental results are presented from three electromechanical emulation machines (EEMs) programmed to emulate the same vertical-axis fixed-pitch turbine. Although hardware platforms and control implementations varied, results show that each EEM is successful in emulating the turbine model, thus demonstrating the general feasibility of the approach. However, performance of motor control under torque command, current command or speed command differed. In one of the EEMs evaluated, the power take off controller tracks the maximum power-point of the turbine in response to turbulence. Utilizing realistic inflow conditions and control laws, the emulator dynamic speed response is shown to agree well at low frequencies with numerical simulation but to deviate at high frequencies.

Authors:

Cavagnaro, Robert J. ^[1]; Neely, Jason C. ^[2]; Fay, Franois-Xavier ^[3]; Mendia, Joseba Lopez ^[3]; Rea, Judith A. ^[4]

Univ. of Washington, Seattle, WA (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Tecnalia, Bilbao (Spain)
Univ. College Cork (Ireland)

Publication Date:: Sun Nov 06 00:00:00 EDT 2016

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1339266

Report Number(s):: SAND-2014-18195J
Journal ID: ISSN 1949-3029; 537822

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Sustainable Energy

Additional Journal Information:: Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 1949-3029

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 13 HYDRO ENERGY; Energy conversion; Hydrokinetic generator; Motor drives; Renewable energy; Turbine power take-off

Citation Formats


                    Cavagnaro, Robert J., Neely, Jason C., Fay, Franois-Xavier, Mendia, Joseba Lopez, and Rea, Judith A. Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine.  United States: N. p., 2016. 
Web.  doi:10.1109/TSTE.2015.2492943.

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                    Cavagnaro, Robert J., Neely, Jason C., Fay, Franois-Xavier, Mendia, Joseba Lopez, & Rea, Judith A. Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine.  United States.  https://doi.org/10.1109/TSTE.2015.2492943

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                    Cavagnaro, Robert J., Neely, Jason C., Fay, Franois-Xavier, Mendia, Joseba Lopez, and Rea, Judith A. Sun .  
"Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine".  United States.  https://doi.org/10.1109/TSTE.2015.2492943.  https://www.osti.gov/servlets/purl/1339266.

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@article{osti_1339266,

  title        = {Evaluation of Electromechanical Systems Dynamically Emulating a Candidate Hydrokinetic Turbine},

  author       = {Cavagnaro, Robert J. and Neely, Jason C. and Fay, Franois-Xavier and Mendia, Joseba Lopez and Rea, Judith A.},

  abstractNote = {The use of controllable motor-generator sets to emulate the dynamics of a hydrokinetic turbine is evaluated as an alternative to field testing a prototype. The emulator control dynamic equations are presented, methods for scaling turbine parameters are examined, and experimental results are presented from three electromechanical emulation machines (EEMs) programmed to emulate the same vertical-axis fixed-pitch turbine. Although hardware platforms and control implementations varied, results show that each EEM is successful in emulating the turbine model, thus demonstrating the general feasibility of the approach. However, performance of motor control under torque command, current command or speed command differed. In one of the EEMs evaluated, the power take off controller tracks the maximum power-point of the turbine in response to turbulence. Utilizing realistic inflow conditions and control laws, the emulator dynamic speed response is shown to agree well at low frequencies with numerical simulation but to deviate at high frequencies.},

  doi          = {10.1109/TSTE.2015.2492943},

  journal      = {IEEE Transactions on Sustainable Energy},

  number       = 1,

  volume       = 7,

  place        = {United States},

  year         = {Sun Nov 06 00:00:00 EDT 2016},

  month        = {Sun Nov 06 00:00:00 EDT 2016}

}

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