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Ye Li - IEEE Xplore Author Profile

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In this article, we describe numerical simulations of an innovative design of close-packed contra-rotating vertical-axis turbines (VATs), which enable assessment of power performance, vorticity distribution, and wake deficit. The design comprises a large diameter rotor without traditional supporting arms, stable in pitch and roll. Close-packing reduces leakage between rotors and yields a high bloc...Show More
With the development of very large floating structures (VLFSs), a hexagon enclosed platform (HEP), which consists of six trapezoidal modules with a hinged connection, is recently proposed. Preliminary studies have shown its good performance for multipurpose ocean exploration applications, but the traditional rigid connector might not satisfy the requirements. To further enhance the design and perf...Show More
With the increase of anthropogenic oceanic activities, a great number of innovative marine vehicles have been proposed and developed in the past few decades. Among these new vehicles, the amphibious marine vehicle is considered one of the most unique as it operates in air and water. This unique mode of operation necessitates simultaneous and coupled analyses of the aerodynamic and hydrodynamic per...Show More
The inverted pendulum is a fast-moving, highly nonlinear and unstable system with multiple variables and non-minimum phase that requires effective stabilization controllers. Therefore, studies into inverted pendulum systems theoretically and practically have great significance. The Euler-Lagrange Equation is used to calculate the mathematical model for a five-link inverted pendulum system. Linear ...Show More
A novel method to suppress the force ripple of switched reluctance linear motors (SRLMs) based on predictive-fuzzy control is proposed in this article. Generally, the force ripple mainly occurs in the commutation area, resulting from the dropping force of the outgoing phase that cannot match the rising force of the incoming phase. The force distribution function (FDF) is a suitable method for cont...Show More
Ocean wave energy has been regarded as a promising and sustainable power source for offshore power system. In order to handle the uncertainty and fluctuation of the wave power, the power system is generally designed to be highly dependent on short-time energy storage facilities such as battery packs. This means the cost of energy storage facility tends to dramatically increase when a large wave fa...Show More
Switched reluctance linear motors (SRLMs) has been applied more and more in the industrial field due to its simple structure, low cost, large starting force and small starting current. However, due to the double salient structure of SRLM and its work in the nonlinear region, the force ripple and noise problems are the main factors restricting the development of SRLMs. The force ripple usually appe...Show More
This paper focuses on the dynamic modeling, controller design, and simulation verification of a new cable-driven underwater vehicle model system, which is proposed for future application on a tension leg platform. Compared with conventional underwater vehicles, the proposed cable-driven underwater vehicle model system has a unique structure and subjects to not only unknown underwater disturbances ...Show More
This paper focuses on the modeling, diving controller design, and experiment of a special cable-driven underwater parallel platform with eight-cable coupling drive structure. Kinematic and dynamic models of the platform are established utilizing a simplified approach, and the hydraulic driven control model is derived based on joint-space method. To improve the diving control precision and system r...Show More
Wedge water entry problem is investigated and induced free surface flow problem is studied through Smoothed Particle Hydrodynamics (SPH) method. Firstly, the SPH model is introduced briefly, including numerical approximation, the discretized governing equations, boundary treatment and time stepping algorithm. Then the SPH method is validated by experimental results for further investigations. Afte...Show More
The first and a crucial step in development of tidal current power is to make a comprehensive assessment at potential sites. In order to obtain the features of tidal current and properly site tidal current energy converter, the Regional Ocean Modeling System (ROMS) was employed to simulate tidal current in this region. Favorable comparison with the previous research indicates that this model has e...Show More
The leakage of pipeline would cause serious problems, especially when the pipe conveying petroleum or other toxic substance. For the ocean mining system, the complex environment would increase the risk of the fracture. Once the leakage occurs, the vibration of the pipe would aggravate spill situation and even result in crack of the pipe. To prevent the detriment of the leaking, the dynamic perform...Show More
The effect of stanchion and reverse flow on turbine power performance is studied based on Computational Fluid Dynamics (CFD). The turbine in this paper is developed by National Ocean Technology Center (NOTC), the experiment study has been carried out in year 2014. The simulation model is validated based on experimental results. The CFD model can simulate the marine current conditions up to an acce...Show More