Wireless power transfer (WPT) is the preferred charging method for electric vehicles (EVs) powered by battery and supercapacitor. In this paper, a novel WPT system with constant current capability sightseeing car supercapacitor storage designed. First, an optimized magnetic coupler using ferrite cores shielding structure proposed to ensure stable high efficiency. Compared traditional planar shape core coupler, requires lesser material without degrading performance of system. Second, model...

This paper proposes a new control technique, which only employs the primary-side controller and load identification approach to adjust charging voltage/current for series-series (SS) series-parallel (SP) compensated wireless power transfer (WPT) systems. The advantages are that dual-side communication real-time current/voltage adjustment is avoided as well it suitable different modes, e.g., constant voltage (CV) current (CC) defined by battery profile. approach, utilizes reflected impedance...

Accurate and reliable mathematical modeling is essential for the optimal control performance analysis of polymer electrolyte membrane fuel cell (PEMFC) systems, which are mainly implemented based on accurate parameter estimation. In this paper, a multi-strategy tuna swarm optimization (MS-TSO) proposed to estimate parameters PEMFC voltage models compare them with other optimizers such as differential evolution, whale approach, salp algorithm, particle optimization, Harris hawk slime mould...

Proton exchange membrane fuel cells have attracted widespread attention due to their cleanliness and high energy density, but the performance degradation during operation greatly limits commercialization. Therefore, reliable prediction of cell is great significance. The recovery phenomenon reversible voltage loss that occurs has posed difficulties for model training prediction. Moreover, models may easily erroneously learn combined trends in degradation. To address this issue, paper employs...

To prevent magnetic flux leakage to the maximal extent, increase coupling coefficient of high-power inductive power transfer (IPT) system, and reduce electromagnetic radiation in water medium, a novel underwater loosely coupled transformer (LCT) based on semiclosed core structure is proposed this paper. Power loss devised LCT investigated comparatively three media including air, freshwater, seawater. It shown that winding are basically identical. However, additional eddy current (AEC)...

Charging current and efficiency of a wireless power transfer system depend on the equivalent load resistance supercapacitor load, which varies during charging. To achieve constant (CC) charging maximized under variable loads, control method that employs primary-side phase shift H-bridge inverter secondary-side semiactive rectifier are proposed. The proposed not only achieves CC charging, but also ensures no reactive impedance seen into rectifier. Furthermore, maximum tracking is based...

In this article, a design method of the double-D (DD) coil aiming at high misalignment tolerance is proposed, and electromagnetic field (EMF) shielding system considered. Inspired by DD recommended in standard J2954 published Society Automotive Engineers, novel structures transmitting (Tx) receiving (Rx) are designed, respectively. First, introduced as reference. Second, for Tx coil, parameters, such length, width, coverage, investigated detail. For Rx structure overlapped edge optimized....

The battery internal temperature estimation is important for the thermal safety in applications, because hard to measure directly. In this work, an online method based on a simplified model using Kalman filter proposed. As improvement, influences of entropy change and overpotential heat generation are analyzed quantitatively. parameters identified through current pulse test. charge/discharge experiments under different rates carried out same verify results. surface temperatures measured with...

In this paper, a novel magnetic coupler of wireless power transfer system for the solar wing driving spacecraft is designed. Compared with traditional slip-ring supply, proposed characterized by non-contact, high efficiency, wear free, safety, and reliability. Particularly, it can be applied to rotating condition. To realize light weight small volume receiver, has been optimized from both compensation topology coil configuration. First, series-none employed eliminate bulky secondary-side...

Wireless power transfer (WPT) systems have attracted much attention because of their safety, convenience, and environmental friendliness. For wireless supercapacitor charging, the system efficiency charging current are highly dependent on load that varies over a wide range. In this article, simultaneous maximum (MSE) tracking constant (CC) control scheme for is proposed. CC double-sided LCC topology chosen due to its characteristic providing load-independent output current. Furthermore,...

A novel magnetic coupling mechanism with steady output and low cost is proposed in this paper. It composed of n-type power supply rail dual-phase coil receiver. The conventional I-type has advantages narrow width, large lateral tolerance, electromagnetic field (EMF) radiation which are suitable for dynamic wireless charging. double-D used as the receiver also seen a single-phase However, induced voltage sinusoidal variation fluctuation zero point along driving direction. to solve issue...

The underwater wireless power transfer (UWPT) technology provides a feasible way to solve the problems of traditional supply method autonomous vehicle (AUV). magnetic coupler is most essential component in system. Its configuration determines its applicable scenarios, and parameter design optimization will directly affect system's overall output efficiency. In this article, an arc-shaped proposed, which suitable for AUV's curved shell. Especially, proposed novel utilizes Fe-based...

This article proposes an asymmetric magnetic coupler using the horizontal field to realize conformal and lightweight unmanned aerial vehicle (UAV) side pickup mechanism solve problems of rotation misalignment offset UAVs. The novel structure uses multiple groups series circular coils as transmitting coil construct a uniform near harness field. solenoid covered with flexible material is used receiver, which attached UAV landing gear. A 200-W prototype produced validate proposed structure....

Transcription is the first step in gene expression, and it at which most of regulation expression occurs. Although sequenced prokaryotic genomes provide a wealth information, transcriptional regulatory networks are still poorly understood using available genomic largely because accurate prediction promoters difficult. To improve promoter recognition performance, novel variable-window Z-curve method developed to extract general features promoters. The used for further classification by...

Wireless charging for electric vehicles has been investigated in recent years. One of the critical issues research is to improve weak interoperability between two popular pads—rectangular pad (RCP) and double-D (DDP). This article intends model under misalignment it by adjusting pads' relative position. First, variation with analyzed flux model. Full output power high transmission efficiency can be achieved when pads are misaligned a certain distance. Second, optimal obtained calculation...

In this article, a uniform magnetic field coil with shield is presented and designed to cancel the geomagnetic surrounding noises. First, an analytical model of developed, based on Biot–Savart law traditional images method. Second, in order improve accuracy, influence noninfinite thickness produced by considered using multireflection theory, improved obtained. The verified three-dimensional finite-element method, its accuracy significantly compared previous analysis model. Then,...

The double-sided inductor capacitor topology has been proposed in some national standards for wireless charging systems. However, misalignment between the transmitting and receiving coils usually leads to detuning weak coupling, resulting low output power inefficiency. To improve under this article proposes a control method based on variable (VLC). First, it is deduced that zero phase angle input full can be achieved by VLC regulation certain misalignment. Second, using an EE-shaped core...

To guarantee safety and durability, the battery is generally required to charge with constant current (CC) first then shift voltage (CV). For traditional topology, CC CV outputs can only be achieved a fixed coupling coefficient, parameters of system need redesigned when coefficient changed. solve problem, novel transmitter-side series receiver-side capacitor–inductor–capacitor–capacitor (S-CLCC) compensation topology under zero phase angle (ZPA) conditions proposed, in which mode converted...