Comparison of Tidal Current Turbine Designs in Several High Speed Locations Around the United States

2015 ◽  
Author(s):  
Mohammed S. Mayeed ◽  
Golam M. Newaz ◽  
Dallin Hall ◽  
Davison Elder
Keyword(s):  
United States ◽  
Power Generation ◽  
Gulf Stream ◽  
Tidal Current ◽  
The United States ◽  
Simulation Software ◽  
Tidal Current Energy ◽  
Tidal Current Turbine ◽  
Current Energy ◽  
Current Turbine

Tidal current energy is regarded as one of the most promising alternative energy resources for its minimal environmental footprint and high-energy density. The device used to harness tidal current energy is the tidal current turbine, which shares similar working principle with wind turbines. The high load factors resulting from the fluid properties and the predictable resource characteristics make marine currents particularly attractive for power generation. There is a paucity of information regarding various key aspects of system design encountered in this relatively new area of research. Not much work has been done to determine the characteristics of turbines running in water for kinetic energy conversion even though relevant work has been carried out on ship’s propellers, wind turbines and on hydro turbines. None of these three well established areas of technology completely overlap with this new field so that gaps remain in the state of knowledge. A tidal current turbine rated at 1–3 m/s in water can result in four times as much energy per year/m2 of rotor swept area as similarly rated power wind turbine. Areas with high marine current flows commonly occur in narrow straits, between islands, and around. There are many sites worldwide with current velocities around 2.5 m/s, such as near the UK, Italy, the Philippines, and Japan. In the United States, the Florida Current and the Gulf Stream are reasonably swift and continuous currents moving close to shore in areas where there is a demand for power. In this study tidal current turbines are designed for several high tidal current areas around USA for a tidal current speed range from 1 m/s to 2.5 m/s. Several locations around USA are considered, e.g. the Gulf Stream; Mississippi River, St. Clair’s river connecting Lake Huron to Lake St. Clair’s; Colorado River within Cataract Canyon etc. Tidal current turbines can be classified as either horizontal or vertical axis turbines. In this study several designs from both the classifications are considered and modeled using SolidWorks. Hydrodynamic analysis is performed using SolidWorks Flow simulation software, and then optimization of the designs is performed based on maximizing the starting rotational torque and ultimate power generation capacity. From flow simulations, forces on the tidal current turbine blades and structures are calculated, and used in subsequent stress analysis using SolidWorks Simulation software to confirm structural integrity. The comparative results from this study will help in the systematic optimization of the tidal current turbine designs at various locations.

Structural Dynamic Analysis of a Tidal Current Turbine Using MBDyn

2018 ◽  
Author(s):  
Jun Leng ◽  
Ye Li
Keyword(s):  
Tidal Current ◽  
Interaction Analysis ◽  
Vertical Axis ◽  
Internal Force ◽  
Mode Shapes ◽  
Structural Dynamic ◽  
Tidal Current Energy ◽  
Integrated Simulation ◽  
Tidal Current Turbine ◽  
Current Turbine

In recent years, tidal current energy has gained wide attention for its abundant resource and environmentally friendly production. This study focuses on analyzing dynamic behavior of a three-bladed vertical axis tidal current turbine. The multibody dynamics code MBDyn is used in the numerical simulation. It performs the integrated simulation and analysis of nonlinear mechanical, aeroelastic, hydraulic and control problems by numerical integration. In this study, tidal current turbine is idealized as an assembly of flexible beams including axis of rotation, arms and blades. We firstly conduct a modal analysis on the tidal current turbine and validate the model with the results obtained by ANSYS. The natural frequencies of blades with different size parameters are compared and the corresponding mode shapes are presented. Next, a parametric study was performed to investigate the effect of internal force on the dynamic response. It is concluded that the proposed method is accurate and efficient for structural analysis of tidal current turbine and this flexible multibody model can be used in the fluid-structure-interaction analysis in the future.

Investigations Into Tidal Current Turbine System Faults and Fault Tolerant Control Strategies

2020 ◽  
Author(s):  
Xuhua Yan ◽  
Rosemary Norman ◽  
Mohammed A. Elgendy
Keyword(s):  
Tidal Current ◽  
Fault Tolerant ◽  
Control Strategies ◽  
Synchronous Generator ◽  
Fault Tolerant Control ◽  
Current Speed ◽  
Tidal Current Energy ◽  
Speed Sensor ◽  
Tidal Current Turbine ◽  
Current Turbine

Abstract In recent years, there has been a growing interest in tidal current energy as it is a potential source for green electricity generation and the most predictable form of ocean renewable energy. Due to the harsh marine environment, the Tidal Current Turbine (TCT) system has to be designed to be robust and to work reliably with high availability to minimize the need for intervention. Thus, fault tolerant control strategies are needed to enable the system to continue operating under some fault conditions, this will reduce the power generation cost and also increase the system robustness. This paper introduces some of the different fault conditions that may occur in TCT systems such as sensor faults, especially tidal current sensors. Potential solutions for these faults are then introduced. The paper then presents a standalone TCT generation system model with perturb and observe (P&O) control; this control aims to solve the tidal current speed sensor fault problem, ensuring that the system operates near the maximum power point (MPP) without the tidal current speed sensor. The control system is simulated using MATLAB/Simulink, for a TCT, utilizing a permanent synchronous generator (PMSG) and a boost converter.

A Review on Tidal Power & Its Scope in Indian Peninsular Area

2016 ◽  
Vol 8 (02) ◽  
pp. 97-102
Author(s):  
Anand Prakash Yadav ◽  
Kundan Kumar ◽  
Priyank Srivastava
Keyword(s):  
Power Generation ◽  
Tidal Current ◽  
Energy Development ◽  
Coastal Areas ◽  
Tidal Power ◽  
Tidal Current Energy ◽  
The World ◽  
Tidal Power Generation ◽  
Near Future ◽  
Current Energy

Now days and in the coming years, increased attention is being given to the tidal current energy development all over the world. This article is about tidal power generation. It describes tidal power and the various methods of utilizing tidal power to generate electricity. The paper focuses on the potential of this method of generating the electricity and why this could be a common way of producing electricity in the near future. It also focuses on the scope of tidal power in coastal areas of India and their comparisons.

scholarly journals Development and Research Status of Tidal Current Power Generation Systems in China

2021 ◽  
Vol 9 (11) ◽  
pp. 1286
Author(s):  
Hao Chen ◽  
Qi Li ◽  
Mohamed Benbouzid ◽  
Jingang Han ◽  
Nadia Aït-Ahmed
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wind Energy ◽  
Tidal Current ◽  
Good Prospect ◽  
Tidal Current Energy ◽  
Marine Renewable Energy ◽  
Power Generation Technology ◽  
Power Generation Systems ◽  
Current Energy

Considering the depletion of oil, coal, gas and other fossil energy, and the increasingly serious environmental pollution, all countries in the world are developing clean and renewable energy, such as wind energy, water energy, solar energy, etc., to alleviate the current energy crisis. Tidal current energy belongs to the marine renewable energy. It is clean, pollution-free, and abundant, with a good prospect of development due to its similarity with wind energy. This paper firstly analyses the reserves and distribution of tidal current energy in China. Then the early exploration of Tidal Current Power Generation System (TCPGS) in China is briefly introduced. Subsequently, it gives the details of the devices and experimental platforms of TCPGS that were researched and developed by various universities, research institutes and enterprises in China. The information mainly includes: the size and the capacity of the system, the support structure, turbine type, the selection of generator, and some river and offshore test information, etc. Finally, it discusses the similarities and differences between China and other countries in tidal current power generation technology, and summaries the current development status and gives the prospect of the TCPGS technology in China.

scholarly journals Tidal Current Energy for Indian Coastal Lines – A State Art of Review

2020 ◽  
Vol 1716 ◽  
pp. 012008
Author(s):  
P Vyshnavi ◽  
Nithya Venkatesan ◽  
A. Samad ◽  
E.J. Avital
Keyword(s):  
Tidal Current ◽  
Tidal Current Energy ◽  
Current Energy

scholarly journals An FTC Design via Multiple SOGIs with Suppression of Harmonic Disturbances for Five-Phase PMSG-Based Tidal Current Applications

2021 ◽  
Vol 9 (6) ◽  
pp. 574
Author(s):  
Zhuo Liu ◽  
Tianhao Tang ◽  
Azeddine Houari ◽  
Mohamed Machmoum ◽  
Mohamed Fouad Benkhoris
Keyword(s):  
Fault Tolerance ◽  
Energy Conversion ◽  
Tidal Current ◽  
Fault Tolerant ◽  
Tidal Current Energy ◽  
Electromagnetic Forces ◽  
Model Free ◽  
Energy Conversion Systems ◽  
Power Scale ◽  
Current Energy

This paper firstly adopts a fault accommodation structure, a five-phase permanent magnet synchronous generator (PMSG) with trapezoidal back-electromagnetic forces, in order to enhance the fault tolerance of tidal current energy conversion systems. Meanwhile, a fault-tolerant control (FTC) method is proposed using multiple second-order generalized integrators (multiple SOGIs) to further improve the systematic fault tolerance. Then, additional harmonic disturbances from phase current or back-electromagnetic forces in original and Park’s frames are characterized under a single-phase open condition. Relying on a classical field-oriented vector control scheme, fault-tolerant composite controllers are then reconfigured using multiple SOGIs by compensating q-axis control commands. Finally, a real power-scale simulation setup with a gearless back-to-back tidal current energy conversion chain and a small power-scale laboratory prototype in machine side are established to comprehensively validate feasibility and fault tolerance of the proposed method. Simulation results show that the proposed method is able to suppress the main harmonic disturbances and maintain a satisfactory fault tolerance when third harmonic flux varies. Experimental results reveal that the proposed model-free fault-tolerant design is simple to implement, which contributes to better fault-tolerant behaviors, higher power quality and lower copper losses. The main advantage of the multiple SOGIs lies in convenient online implementation and efficient multi-harmonic extractions, without considering system’s model parameters. The proposed FTC design provides a model-free fault-tolerant solution to the energy harvested process of actual tidal current energy conversion systems under different working conditions.

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