Design of LCC-P Constant Current Topology Parameters for AUV Wireless Power Transfer

Abstract

The wireless power transmission (WPT) of an autonomous underwater vehicle (AUV) tends to have non-negligible eddy current loss with increasing frequency or coil current due to the conductivity of seawater. In this paper, the inductor-capacitor-capacitor and parallel (LCC-P) topology and the magnetic coupler with an H-shaped receiver structure are chosen to achieve a compact system on the receiving side. The conditions for constant current output of the LCC-P topology are analyzed based on the cascaded circuit analysis method. The traditional parameter design method does not consider the influence of eddy current loss on the system circuit model, by introducing the equivalent eddy current loss resistance at both the transmitting side and receiving side, a modified circuit model of the WPT system in the seawater condition was obtained. Afterward, a nonlinear programming model with the optimal efficiency of the constant current mode as the objective function is established, and the genetic algorithm is used to obtain the optimal system parameters. An underwater AUV-WPT prototype was built and the finite element simulation and experimental results verified the theoretical analysis.

Wireless Power Transmission System for Powering Rotating Parts of Automatic Machineries

“…Some authors support their conclusions using finite element analysis as reported, for example, in [21]. The literature reports numerous works [22,23] dealing with the same issue, but the emphasis is on WPT systems' driving and regulation [24][25][26][27].…”

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

“…Generally, four main topologies are used, which, regarding compensating capacitors in the primary and secondary, are series-series (S-S), seriesparallel (S-P), parallel-parallel (P-P) and parallel-series (P-S). More complex topolo-gies based on LCC resonant converters such as LCC-S [141,142], LCC-P [143,144], LCC-LCC [145][146][147] or multi-resonance circuits [147,148] have also been tested in the literature. Using non-resonant (N) IWPT is also possible for low distance and low power transfer with similar efficiency [149].…”

“…Their coils could transfer 3 kW of power. In [144], the authors presented an 802.3 W resonant IWPT system with an arc-shaped transmitter and I-shaped receiver (Figure 8d). Xia et al [218] designed an IWPT device with a coaxial Tx and an arc-shaped Rx that could achieve a stable output power of 575 W. Finally, in [172], they built an arc-shaped transmitter with a pendulum-shaped receiver, transferring up to 3.03 kW when aligned.…”

Mutual Inductance and Load Identification of LCC-S IPT System Considering Equivalent Inductance of Rectifier Load

“…Taking ( 9) into (10) and separating the real part and imaginary part of Z r , (11) can be obtained.…”

“…Compared with the traditional charging method, this technology is safe, reliable, flexible and convenient, and has strong adaptability [1][2][3][4][5][6]. As a new type of power supply, it is widely used in electric vehicle charging [7], electronic products charging [8], biomedical [9] and underwater vehicle fields [10], as well as other fields. In addition, with the continuous development of the IPT system, its application scenarios are also being further explored and expanded.…”