Evaluation of electromechanical systems dynamically emulating a candidate hydrokinetic turbine
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2016-01-01
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Abstract
Implications of conducting hardware-in-the-loop testing of a specific hydrokinetic turbine on controllable motor-generator sets or electromechanical emulation machines (EEMs) are explored. The emulator control dynamic equations are presented, methods for scaling turbine parameters are developed and evaluated, and experimental results are presented from three 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 at different power levels, thus demonstrating the general feasibility of the approach. However, performance of motor control under torque command, current command, or speed command differed. In a demonstration of the intended use of an EEM for evaluating a hydrokinetic turbine implementation, a power takeoff 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.
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Publisher Copyright: © 2015 IEEE.
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Emulation , Energy conversion , Hardware-in-the-loop , Hydrokinetic generator , Motor drives , Renewable energy , Turbine power takeoff , hardware-in-the-loop , hydrokinetic generator , renewable energy , turbine power takeoff , motor drives , energy conversion , Renewable Energy, Sustainability and the Environment , SDG 7 - Affordable and Clean Energy , Funding Info , Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Postdoctoral Research Awards under the EERE Water Power Program, _x000D_ Sandia National Laboratories, _x000D_ U.S. Department of Energy's National Nuclear Security Administration, _x000D_ European Union , Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Postdoctoral Research Awards under the EERE Water Power Program, _x000D_ Sandia National Laboratories, _x000D_ U.S. Department of Energy's National Nuclear Security Administration, _x000D_ European Union
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Cavagnaro , R J , Neely , J C , Faÿ , F X , Mendia , J L & Rea , J A 2016 , ' Evaluation of electromechanical systems dynamically emulating a candidate hydrokinetic turbine ' , IEEE Transactions on Sustainable Energy , vol. 7 , no. 1 , 7321812 , pp. 390-399 . https://doi.org/10.1109/TSTE.2015.2492943