Marine tidal energy extraction faces multi-fold challenges during design, installation, operation and grid-connection. The control of turbine speed with tidal variation is vital to get a steady power output from the turbines during the operation phase throughout the year. This paper deals with the development and implementation of a control strategy for a horizontal axis turbine using the Blade Element Momentum (BEM) approach as the hydrodynamic model and generator (DFIG) control. A control efficiency of 71% is achieved between the system's overall and the hydrodynamic power of a small scale turbine. It is also shown that the generator speed can be well maintained to operate in a super-synchronous mode. © 2016 IEEE.

Abdus Samad

Department of Ocean Engineering

Singha O

Samad A

Avital E.J.

Nithya Venkatesan

Aerospace engineering

Asynchronous generators

Boundary element method

FLUID DYNAMICS

Hydrodynamics

HYDROELECTRIC GENERATORS

Tidal power

Turbines

VECTOR CONTROL (ELECTRIC MACHINERY)

BLADE-ELEMENT MOMENTUMS

CONTROL EFFICIENCY

Control strategies

CONTROLLER IMPLEMENTATION

DFIG

Hydrodynamic model

SUPER-SYNCHRONOUS

TIDAL TURBINES

Turbomachine blades

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Modeling and controller implementation of tidal turbine for Indian remote islands

Proceedings of 2016 7th International Conference on Mechanical and Aerospace Engineering, ICMAE 2016

The hydrodynamic performance of a dual-rotor horizontal axis marine turbine (HAMCT) is investigated for the power gain in operating the rear rotor without blade-pitch control. This kind of turbine can be advantageous for a rectilinear tidal current of reversing directions, where each rotor blade is optimally fixed-pitched towards its upstream velocity. The blade element momentum (BEM) method is coupled with the Park wake model. A generic three-blade turbine is shown to gain up to 20% in the coefficient of power CP as relative to the front rotor CP when operating the rear rotor at the same tip speed ratio (TSR) as the front one, gaining overall CP up to 0.55. Analytic model is derived to backup the estimate of power gain. Plots for turbine performance variation with TSR and profile hydrodynamic efficiency are given, and analysed for lab and small-medium size turbines.

Fulltext

International Journal of Engineering & Technology

Hydrodynamic Assessment of a Dual-Rotor Horizontal Axis Marine Current Turbine

Renewable Energy

Numerical simulation of a marine current turbine in free surface flow

Effects of structure flexibility on horizontal axis wind turbine performances

An experimental investigation simulating flow effects in first generation marine current energy converter arrays

Wind Energy Handbook

Volume 4: Ocean Engineering; Ocean Renewable Energy; Ocean Space Utilization, Parts A and B

Development of a Hydrodynamic Optimization Tool for Stall-Regulated Hydrokinetic Turbine Rotors

Journal	Data powered by TypesetProceedings of 2016 7th International Conference on Mechanical and Aerospace Engineering, ICMAE 2016
Publisher	Data powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
Open Access	No