Efficiency optimization in low inertia wells turbine-oscillating water column devices

Salvador Ceballos; Judy Rea; Iraide Lopez; Josep Pou; Eider Robles; Dara L. Osullivan

doi:10.1109/TEC.2013.2265172

Efficiency optimization in low inertia wells turbine-oscillating water column devices

Salvador Ceballos, Judy Rea, Iraide Lopez, Josep Pou, Eider Robles, Dara L. Osullivan

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

The Wells turbine is a bidirectional air turbine which operates efficiently over a restricted range of air flow. The optimization of its efficiency requires control of rotational velocity in order to maintain the ratio between airflow and tip speed within the high efficiency range. This paper introduces two generator control strategies that optimize the power take-off efficiency for low inertia turbine systems in which instantaneous control of the turbine air flow to tip speed ratio is a realistic goal. The first control strategy requires measurement of turbine rotational speed and air chamber pressure, and the second strategy removes the requirement for air pressure measurement. The implementation issues associated with this level of control are examined and the simulation results are validated in an experimental test rig.

Original language	English
Article number	6544582
Pages (from-to)	553-564
Number of pages	12
Journal	IEEE Transactions on Energy Conversion
Volume	28
Issue number	3
DOIs	https://doi.org/10.1109/TEC.2013.2265172
Publication status	Published - 2013

Keywords

AC generators
energy conversion
power conversion
power electronics
power generation

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10.1109/TEC.2013.2265172

Cite this

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abstract = "The Wells turbine is a bidirectional air turbine which operates efficiently over a restricted range of air flow. The optimization of its efficiency requires control of rotational velocity in order to maintain the ratio between airflow and tip speed within the high efficiency range. This paper introduces two generator control strategies that optimize the power take-off efficiency for low inertia turbine systems in which instantaneous control of the turbine air flow to tip speed ratio is a realistic goal. The first control strategy requires measurement of turbine rotational speed and air chamber pressure, and the second strategy removes the requirement for air pressure measurement. The implementation issues associated with this level of control are examined and the simulation results are validated in an experimental test rig.",

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AU - Robles, Eider

AU - Osullivan, Dara L.

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AB - The Wells turbine is a bidirectional air turbine which operates efficiently over a restricted range of air flow. The optimization of its efficiency requires control of rotational velocity in order to maintain the ratio between airflow and tip speed within the high efficiency range. This paper introduces two generator control strategies that optimize the power take-off efficiency for low inertia turbine systems in which instantaneous control of the turbine air flow to tip speed ratio is a realistic goal. The first control strategy requires measurement of turbine rotational speed and air chamber pressure, and the second strategy removes the requirement for air pressure measurement. The implementation issues associated with this level of control are examined and the simulation results are validated in an experimental test rig.

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Efficiency optimization in low inertia wells turbine-oscillating water column devices

Abstract

Keywords

UN SDGs

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