A Flower Pollination Method Based Global Maximum Power Point Tracking Strategy for Point-Absorbing Type Wave Energy Converters

Zhao, Aqiang; Wu, Weimin; Sun, Zuoyao; Zhu, Lixun; Lu, Kaiyuan; Chung, Henry Shu-Hung; Blaabjerg, Frede

doi:10.3390/en12071343

Cited by 16 publications

(15 citation statements)

References 39 publications

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“…This is due to the fact that it causes the power generation device to vibrate too fast and easily causes energy shock and waste. Furthermore, it poses difficult challenges to the working performance of the related supporting power generation system [24][25][26]. After complete examination of the effects of wave conditions of different periods on the hydrodynamic performance of the power generation device, a specific wave period of T = 1.5 s is selected, in this section, to analyse the motion response and power generation of the device under different wave height parameters.…”

Section: Effect Of Period Time On the Hydrodynamic Performance Of The...mentioning

confidence: 99%

Design of a new oscillating-buoy type wave energy converter and numerical study on its hydrodynamic performance

Li¹,

Hong²,

Zhang³

2023

brod

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In this study, with respect to wave energy generation technology, a new scheme is proposed for oscillating-buoy type wave energy conversion. A three-dimensional model of a power generation device is established based on SolidWorks, and a three-dimensional viscous numerical pool is setup using STAR-CCM+ to facilitate the simulation analysis of the device. The hydrodynamic performance and energy capture characteristics of the device were examined using theoretical analysis and numerical simulations. The regularities of parameters, such as motion response, force, and output power of the device, were analysed under four wave environments with different time periods (T) and wave heights (H). The analysis and conclusions can be utilised as a reference for studying the hydrodynamic performance of wave power generation devices.

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Section: Effect Of Period Time On the Hydrodynamic Performance Of The...mentioning

confidence: 99%

Design of a new oscillating-buoy type wave energy converter and numerical study on its hydrodynamic performance

Li¹,

Hong²,

Zhang³

2023

brod

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“…where ω and ω are the maximum and minimum values of the inertia weight coefficient. In the traditional PSO algorithm, the value range of ω is [0.9, 1.2] [7], and the iterative effect is the best. After several groups of experiments, the values are ω ＝0.9, ω ＝0.35.…”

Section: Maximum Power Tracking Analysismentioning

confidence: 99%

Maximum power tracking of wave power generation system based on improved particle swarm optimization

Gao

2023

J. Phys.: Conf. Ser.

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In a wave power generation system, traditional particle swarm optimization (PSO) is prone to premature convergence and local optimal solution when it is used to control the maximum power tracking. Therefore, an improved PSO is proposed, and simulated annealing adaptive particle swarm optimization (SAAPSO) is constructed. The algorithm controls the inertia weight coefficient factor by hyperbolic tangent function and makes the nonlinear adaptive change. Using a linear change strategy to control social learning factors and self-learning factors, a simulated annealing operation is introduced, and a temperature is set according to the initial state of the population. The population is guided to compare the fitness value with the random number in the Metropolis criterion and temperature, and whether a new solution is generated is judged, to improve the problem that the algorithm falls into a locally optimal solution. The simulation results show that the algorithm can effectively prevent the wave power generation system from falling into the local maximum power point, and the maximum wave energy capture ability is significantly improved.

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“…In addition, the peak-to-average power ratio should be limited in a reasonable range during extracting the maximum average power of wave energy, since it directly affects the cost of electromechanical systems [30]. As shown in Fig.…”

Section: B Regular Wave Simulationmentioning

confidence: 99%

A Novel Piecewise Velocity Control Method Using Passivity-Based Controller for Wave Energy Conversion

Huang

Yang

2020

IEEE Access

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By studying the working principle of a maximum power point tracking (MPPT) method called active phase control (APC), we found that not only was the phase difference between the wave excitation force and the velocity reduced, but also the magnitude of the velocity increased. For the direct-drive wave energy converter with a permanent magnet linear generator (PMLG), the velocity of the PMLG in the no-load state is larger than that in any power generation states. According to this characteristic, a novel piecewise velocity control (PVC) method and its trajectory planning scheme for a sealed-buoy wave energy converter (SBWEC) are proposed to obtain the maximum power extraction condition. Considering the irregularity of ocean waves and that the proposed method needs to frequently change the operating state of the PMLG, a passivity-based controller (PBC) is designed. With energy modification and damping injection, rapid convergence and asymptotic stability of the system are guaranteed, so that the proposed MPPT method can be perfectly implemented. The comparative simulation results for regular and irregular waves demonstrate that it is an effective and promising power control method. INDEX TERMS Sealed-buoy wave energy converter, permanent magnet linear generator, piecewise velocity control method, trajectory planning scheme, passivity-based controller.

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A Flower Pollination Method Based Global Maximum Power Point Tracking Strategy for Point-Absorbing Type Wave Energy Converters

Cited by 16 publications

References 39 publications

Design of a new oscillating-buoy type wave energy converter and numerical study on its hydrodynamic performance

Design of a new oscillating-buoy type wave energy converter and numerical study on its hydrodynamic performance

Maximum power tracking of wave power generation system based on improved particle swarm optimization

A Novel Piecewise Velocity Control Method Using Passivity-Based Controller for Wave Energy Conversion

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