An Adaptive Control Strategy for Underwater Wireless Charging System Output Power with an Arc-Shaped Magnetic Core Structure

Xia, Tao; Zhang, Xiaoliang; Zhu, Zhiying; Yu, Haitao; Li, Hang

doi:10.3390/jmse11020294

Cited by 4 publications

(6 citation statements)

References 23 publications

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“…These adjustments are generally achieved by acting on the input or output converters. Some papers have also developed optimized IWPT models to improve their control [138,[244][245][246][247]. In [244], a small-signal phasor model was presented, and a control-tooutput transfer function was developed, with the output voltage as the regulated variable.…”

Section: Dual Data and Power Transfer And Innovative Control Systemsmentioning

confidence: 99%

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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%

“…Other papers such as [138,246] have very recently presented some mathematical models for underwater IWPT optimization by applying more complex algorithms. In [247], they applied a particle swarm algorithm to adaptively control the output power.…”

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 first resonant frequency of the system is 100 kHz. According to Equation (8), the relationship between the excitation inductor L m and the system current can be established. As shown in Figure 6a, when the resonant current is less than 5 A, the critical value of the excitation inductor L m is 384 µH.…”

Section: Circuit Design For Underwater Power Conversion Connector Systemmentioning

confidence: 99%

“…There are different power supply methods, including salvage power replacement and wet plug charging [6], which have the disadvantages of costly, laborious, and complicated maintenance. The underwater wireless power transfer (UWPT) technology has been proposed for charging small, submerged devices, such as AUVs [7,8]. The inductive wireless power transfer (IPT) system's operation is examined in [9] from the standpoint of the distribution of electromagnetic fields.…”

Section: Introductionmentioning

confidence: 99%

Underwater Power Conversion and Junction Technology for Underwater Wireless Power Transfer Stations

Yang,

Chen,

Zhang

et al. 2024

JMSE

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Underwater wireless power transfer (UWPT) systems are appropriate for battery charging of compact, submerged devices without a complicated and expensive sealing structure or human contact because the power source and load are not physically connected. For the shore-based power supply situation, the underwater power conversion and junction technology should be required to drop down shore-based voltage to the target voltage for the underwater energy supply of the UWPT system. This paper proposes a lightweight, high efficiency and power density underwater power conversion connector system for the UWPT system, in which the LLC resonant converter is constructed with SiC transistors. The full load range zero-voltage switching (ZVS) and load adaptive characteristics have been achieved. The optimized RC level shift driver is adopted to highly reduce the switching loss of SiC transistors. Shore-based voltage of 1000 V was converted to the target voltage of 375 V for the UWPT system. The highest measured efficiency is over 98% at a load power level of 1500 W underwater conditions.

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“…It has been widely employed in electric vehicles [8,9], medical equipment, portable electronic devices, aerospace applications, and ocean-related applications. Underwater applications mainly involve the charging of underwater autonomous vehicles [10,11] and the powering of marine observation equipment [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Results and Analysis of Midrange Underwater Asymmetric Wireless Power Transfer

Chen,

Niu,

Yang

et al. 2024

JMSE

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The eddy current loss caused by the conductivity of seawater results in a relatively low transfer efficiency of underwater wireless power transfer (WPT). And the transfer distance of the current WPT system is relatively short. Considering that most of the wireless power transfer devices in practical applications are asymmetric, few studies have explored the transfer characteristics of asymmetric midrange WPT in seawater. In this study, it is experimentally found that the load voltage and transfer efficiency of an asymmetric midrange WPT system with reduced primary balancing resistance in seawater are nearly twice as high as those of a symmetric one at a 50 cm transfer distance and a 410 kHz operation frequency with a 44.4 Ω load resistance. A new circuit model of the underwater WPT system with complex impedance and complex mutual inductance is then presented, and the load voltages predicted by the model are consistent highly with the experimental values; the model is then utilized for the explanation of the experimental observations. Changing the load resistance also improves the transfer efficiency of the system; however, the eddy current loss results in a relatively low transfer efficiency of 30.9% at an optimal load resistance of 90 Ω. The asymmetric midrange underwater WPT system can be applied in scenarios where the transfer distance is prioritized.

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An Adaptive Control Strategy for Underwater Wireless Charging System Output Power with an Arc-Shaped Magnetic Core Structure

Cited by 4 publications

References 23 publications

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

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

Underwater Power Conversion and Junction Technology for Underwater Wireless Power Transfer Stations

Experimental Results and Analysis of Midrange Underwater Asymmetric Wireless Power Transfer

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