Dual-Frequency Modulation to Achieve Power Independent Regulation for Dual-Load Underwater Wireless Power Connector

Pang, Shui; Xu, Jian; Li, Hongyu; Ma, Qingfeng; Li, Xingfei

doi:10.1109/jestpe.2022.3225178

Cited by 14 publications

(3 citation statements)

References 35 publications

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“…A number of innovative control approaches have been presented in the literature. Maximum efficiency tracking (MET) control methods are some of the most popular options [29,174,227,239,240], while other papers have proposed different solutions [241][242][243]. MET control methods focus on finding the variation in the coupling coefficient due to misalignment and adjust the frequency or voltage of one of the sides to maintain an optimal underwater IWPT efficiency.…”

Section: Dual Data and Power Transfer And Innovative Control Systemsmentioning

confidence: 99%

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Martínez de Alegría,

Rozas Holgado,

Ibarra

et al. 2024

Energies

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Unmanned underwater vehicles (UUVs) are key technologies to conduct preventive inspection and maintenance tasks in offshore renewable energy plants. Making such vehicles autonomous would lead to benefits such as improved availability, cost reduction and carbon emission minimization. However, some technological aspects, including the powering of these devices, remain with a long way to go. In this context, underwater wireless power transfer (UWPT) solutions have potential to overcome UUV powering drawbacks. Considering the relevance of this topic for offshore renewable plants, this work aims to provide a comprehensive summary of the state of the art regarding UPWT technologies. A technology intelligence study is conducted by means of a bibliographical survey. Regarding underwater wireless power transfer, the main methods are reviewed, and it is concluded that inductive wireless power transfer (IWPT) technologies have the most potential. These inductive systems are described, and their challenges in underwater environments are presented. A review of the underwater IWPT experiments and applications is conducted, and innovative solutions are listed. Achieving efficient and reliable UWPT technologies is not trivial, but significant progress is identified. Generally, the latest solutions exhibit efficiencies between 88% and 93% in laboratory settings, with power ratings reaching up to 1–3 kW. Based on the assessment, a power transfer within the range of 1 kW appears to be feasible and may be sufficient to operate small UUVs. However, work-class UUVs require at least a tenfold power increase. Thus, although UPWT has advanced significantly, further research is required to industrially establish these technologies.

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Section: Dual Data and Power Transfer And Innovative Control Systemsmentioning

confidence: 99%

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Martínez de Alegría,

Rozas Holgado,

Ibarra

et al. 2024

Energies

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“…The TMS320F28335 DSP has a high-speed processing capability of 150 MHz, up to six enhanced pulse width modulator (EPWM) modules, and an easy-to-implement PWM output control program. Therefore, the TMS320F28335 is suitable for generating high-frequency inverter drive signals [32]. The compensation capacitors C ex1 and C ex2 are set to 1 nF, while the compensation inductors L 1 and L 2 are set to 240 µH.…”

Section: Experimental Validationmentioning

confidence: 99%

A Novel Coupler of Capacitive Power Transfer for Enhancing Underwater Power Transfer Characteristics

Zhang,

Lian

2023

Electronics

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Compared to inductive power transfer (IPT) technology, capacitive power transfer (CPT) technology offers unique advantages such as being cost-effective, lightweight, and free from eddy-current losses, making it more suitable for underwater power transfer. Unlike air, water can conduct electricity and the electric conductivity of different kinds of waters varies with different ion concentrations, which would greatly affect the equivalent model of the underwater couplers. To address this issue, multiple types of underwater coupler working in different kinds of water are compared and analyzed. The influence of the electrical conductivity of water on the capacitive coupler is comprehensively analyzed, and the novel capacitive coupler and its equivalent model are proposed to improve power transfer efficiency. To verify the theoretical analysis, the double-sided LC-compensated CPT circuit is built and tap water is used in the experiment. The experimental results are consistent with the theoretical analysis. In addition, the experimental results also validate the superiority of the proposed capacitive coupler compared to existing research.

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“…Due to these advantages, ICPDT systems are widely used in electric vehicles, underwater AUVs, etc. [6][7][8][9][10][11]. Compared with traditional ICPDT systems, moored buoy ICPDT systems have the following characteristics: First, moored buoy ICPDT systems are applied for the power supply and data transmission of water buoys and underwater sensors.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Inductively Coupled Power and Data Transmission for Buoy Systems

Cui

Pang

et al. 2023

Energies

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Moored buoys are important components of stereo platforms for ocean observation, which are crucial in underwater exploration. In complex marine environments, power supply and data transmission between moored buoys and underwater sensors are difficult. To solve these problems, an inductively coupled power and data transfer (ICPDT) scheme based on LCCL-S-LC hybrid compensation is proposed. The power transmission was analyzed by establishing an LCCL-S-LC compensation buoy ICPDT system model. The system efficiency and output power were analyzed when the load changed, and the optimal load resistor for maximum system efficiency was determined. A modulation and demodulation circuit used for data transmission was introduced, the compensation topology parameters of each loop of the buoy ICPDT system were deduced, and the crosstalk between power and data was analyzed and reduced. An ICPDT system prototype was built to verify the system’s feasibility and effectiveness when it was powered by 24 V. The LCCL-S-LC topology reduced the interference between data and power transmission. When the measured output power of the system was 61.5 W, the power transmission efficiency was 78.1%, and the data receiving end could achieve correct demodulation when the transmission rate was 100 kb/s.

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Dual-Frequency Modulation to Achieve Power Independent Regulation for Dual-Load Underwater Wireless Power Connector

Cited by 14 publications

References 35 publications

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

Wireless Power Transfer for Unmanned Underwater Vehicles: Technologies, Challenges and Applications

A Novel Coupler of Capacitive Power Transfer for Enhancing Underwater Power Transfer Characteristics

Design and Implementation of Inductively Coupled Power and Data Transmission for Buoy Systems

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