Harvesting Weak Ocean Current Energy for Resident Unmanned Underwater Vehicles

Lyu, Feng; Cai, Tianhao; Huang, Longxiang

doi:10.23919/oceans44145.2021.9705760

Cited by 3 publications

(6 citation statements)

References 6 publications

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“…Requires the use of a separable acoustic modem for its full functioning 45 [93] A turbine uses weak ocean currents at sea bed to harvest energy for an AUV 2.8 W Energy is harvested even from weak ocean currents Energy cannot be harvested beyond a certain limit from the weak ocean currents…”

Section: F Energy Harvesting From Turbinesmentioning

confidence: 99%

“…An electronic circuit is designed to govern the operation and energy generating capabilities of the turbine, which consists of a micro-controller, a real time clock and electronic components involved in power generation and communication with the sensors and other related devices. Energy is harvested by turbines from weak ocean currents for powering the AUV at ocean floor [93]. The turbines convert the kinetic energy of ocean into rotating mechanical energy that is further passed to a permanent magnet generator for conversion into electrical energy.…”

Section: -100 Mwmentioning

confidence: 99%

“…Energy harvesting by turbines[91]-[93], ultrasonic radiations[94]-[95], hybrid sources[96]-[101]and parameters optimization[102]-[105]. Unspecified value is x.…”

mentioning

confidence: 99%

“…Citation information: DOI 10.1109/ACCESS.2022.3230600 (Cont). Energy harvesting using turbines[91]-[93], ultrasonic waves[94]-[95], hybrid sources[96]-[101] and parameters optimization[102]-[105]. The x is unspecifie…”

mentioning

confidence: 99%

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Energy Harvesting in Underwater Acoustic Wireless Sensor Networks: Design, Taxonomy, Applications, Challenges and Future Directions

et al. 2022

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In underwater acoustic wireless sensor networks (UAWSNs), energy harvesting either enhances the lifetime of a network by increasing the battery power of sensor nodes or ensures battery-less operation of nodes. This, in effect, results in sustainable and reliable operation of the network deployed for various underwater applications. This work provides a survey of the energy harvesting techniques for UAWSNs. Our work is unique than the existing work on underwater energy harvesting in that it includes state-of-the art techniques designed in the last decade. It analyzes every harvesting scheme in terms of its main idea, merits, demerits and the extent of the harvested power (energy). The description of the merits results in selection of the suitable scheme for the suitable underwater applications. The demerits of the addressed schemes provide an insight to their future enhancement and improvement. Moreover, the harvested techniques are classified into various categories depending upon the involved energy harvesting mechanism and compared based on the maximum and minimum amount of harvested power, which helps in selection of the suitable category keeping in view the power budget of an underwater network before deployment. The challenges in energy harvesting and in UAWSNs are described to provide an insight to them and to address them for further enhancement in the harvested extent. Finally, research directions are specified for future investigation.

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Section: F Energy Harvesting From Turbinesmentioning

confidence: 99%

Section: -100 Mwmentioning

confidence: 99%

“…Energy harvesting by turbines[91]-[93], ultrasonic radiations[94]-[95], hybrid sources[96]-[101]and parameters optimization[102]-[105]. Unspecified value is x.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Energy Harvesting in Underwater Acoustic Wireless Sensor Networks: Design, Taxonomy, Applications, Challenges and Future Directions

et al. 2022

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“…The application conception of the proposed wireless charging platform is illustrated in Figure 1. The AUV charging platform is supplied with external power sources, for example, ocean energy harvesters or subsea stations of seafloor observatories [28]. The transmitter and circuits in the AUV charging platform convert electrical energy into magnetic fields, and the receivers in AUVs transform the energy in magnetic fields to electricity, which is used to charge the AUV batteries.…”

Section: Introductionmentioning

confidence: 99%

A universal wireless charging platform with novel bulged‐structure transmitter design for multiple heterogeneous autonomous underwater vehicles (AUVs)

Lyu

Cai

Huang

2023

IET Power Electronics

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Autonomous underwater vehicles (AUVs) are important mobile equipment for ocean observation. Subsea docking stations are used to charge AUV batteries to increase their cruise duration. Here, a universal wireless charging platform with a novel transmitter is developed to address the issues of poor compatibility existing in conventional docking stations. In order to guarantee a sufficient charging area and reduce copper losses, the proposed transmitter is designed to have a bulged‐structure surrounding coil and a centre coil in coaxial. Moreover, the parameters of the transmitter that impact the magnetic flux density are analysed and optimized by non‐linear programming by Quadratic Lagrangian (NLPQL) algorithm to achieve a field with desirable intensity and uniformity. The characteristics of the circuits under single‐load and double‐load conditions have been tested in air and tank experiments. The results verify that the proposed platform achieves both the universality and misalignment tolerance requirements.

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Design of a Highly Compatible Underwater Wireless Power Transfer Station for Seafloor Observation Equipment

Cai

Lyu

Wang

et al. 2023

JMSE

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Conventional cabled seafloor observatories (CSOs) power in-situ instruments via wet-mated or dry-mated direct electrical contact (DEC) connectors to achieve long-term and real-time observation. However, the DEC connectors have high risks of water leakage and short circuits in power feeding, especially under high water pressure. This paper proposes a highly compatible underwater station based on inductive wireless power transfer (IPT) technology to address the above reliability issue. A novel energy transmitter with runway-structure coils is applied to the proposed underwater station to cover a sufficient power feeding area so that various in-situ equipment can be powered with desirable misalignment tolerance. The magnetic field distribution is analyzed by both derivation and finite element analysis (FEA) methods, and the principal parameters of the transmitter are further optimized and compared with both the mixed-integer sequential quadratic programming (MISQP) algorithm and the evolutionary algorithm (EA) for better performance. The same results show a reliable optimization process. The WPT circuit characteristics are also investigated to power different loads and improve the power transmission efficiency. The output power decreases, and the transmission efficiency rises and then decreases as the load increases. In addition, receivers with higher mutual inductance have better transmission performance. A prototype of the underwater station has been tested both in air and in water, and the experimental results have proven it can power multiple seafloor observation instruments stably and achieve compatibility requirements. The maximum output power of the station prototype for testing is 100 W, and the maximum overall transmission efficiency is 61%.

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Harvesting Weak Ocean Current Energy for Resident Unmanned Underwater Vehicles

Cited by 3 publications

References 6 publications

Energy Harvesting in Underwater Acoustic Wireless Sensor Networks: Design, Taxonomy, Applications, Challenges and Future Directions

Energy Harvesting in Underwater Acoustic Wireless Sensor Networks: Design, Taxonomy, Applications, Challenges and Future Directions

A universal wireless charging platform with novel bulged‐structure transmitter design for multiple heterogeneous autonomous underwater vehicles (AUVs)

Design of a Highly Compatible Underwater Wireless Power Transfer Station for Seafloor Observation Equipment

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