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In this paper, a 25-kW Wireless Power Transfer (WPT) system is considered for in-motion charging of an electric bus. The goal of this research is to derive a control strategy for the primary side of a wireless Electric Vehicle (EV) charger, with the objective to achieve fast dynamics and full control over the primary coil current and the amount of transferred power. To this aim, a dual-loop controller...
This paper presents a design procedure of high-frequency loosely inductive coupled wireless power transfer (LIC-WPT) system based on class- dc-dc converter, taking into account the power loss reduction of inverter, coupling part, and rectifier simultaneously. Analytical expressions including the dc-to-dc efficiency of the WPT system are derived and the efficiency deterioration mechanism...
Electric vehicles (EVs) are very useful but suffer from limited range and long battery charge time. Using wireless power transfer (WPT) allows these issues to be solved. In WPT, the control of the power converters is very important in order to achieve high efficiency and be able to extract the desired power from the source at any time. Until now, it was possible to perform either power control or...
This paper presents a design method and results of prototyping for the wireless power transfer (WPT) link used in intraocular implantable devices. In this kind of applications, the coil size is constrained strictly, which makes it hard to find an efficient configuration by only changing the coil geometry. Therefore, in our design, we took frequency into account as another design dimension to expand...
The authors have proposed a new capacitive power transfer (CPT) system using one-pulse switching active capacitor (OPSAC). The proposed system improves transfer power without LC resonance so that it is robust against parameter change. The one of advantages of OPSAC is easy realization of cascade connection in order to enhance transfer power. In the past, CPT system with five-stage OPSAC was successfully...
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