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In this paper, an inductively coupled multiphase resonant converter is presented for wireless electric vehicle charging applications. As an alternative to the traditional frequency and phase shift control methods, a hybrid phase-frequency control strategy is implemented to improve the system efficiency. A theoretical analysis of the proposed system is carried out considering a wide battery state-of-charging...
In this study, a multi-level type multi-phase resonant converter is presented for high power wireless EV charging applications. As an alternative to the traditional frequency and phase shift control methods, a hybrid phase-frequency control strategy is implemented to improve the system efficiency. In order to confirm the proposed converter and control technique, a laboratory prototype wireless EV...
This paper presents a new constant resistance control technique for a cascaded buck and boost converter, which is suitable for wireless energy transfer pickup systems in variable load applications such as battery or ultra-capacitor charging. In order to achieve high efficiency, an impedance matching network is commonly used in the contactless energy transfer systems especially for low coupling coefficient...
In this study, a CLL resonant converter with different control strategies; frequency, dc-link, and phase shift control are compared and a hybrid control is proposed to increase the efficiency of the system for Electric Vehicle (EV) battery charger applications. The comparison analysis is examined considering the battery charging control algorithms constant current (CC) and constant voltage (CV) with...
In this paper, FPGA based Digital Phase Locked Loop (D-PLL) control technique is applied to the CLL resonant converter for Electric Vehicle (EV) battery charger applications. In order to improve charging efficiency, switching losses must be reduced to have a maximum energy transfer among the variable converter components. Also, fast and secure battery charging requires controlling voltage and current...
In this paper, LLC resonant converter simulation with dual closed loop control is demonstrated for Electric Vehicles (EVs) battery charger. To improve efficiency and fast charging conditions, switching losses must be diminished to have a maximum energy transfer among the variable converter components. The presented dual closed loop control technique is implemented under soft-switching conditions with...
In this paper, LLC resonant converter simulation with Phase Locked Loop (PLL) control technique is demonstrated for Electric Vehicles (EVs) battery charger. In order to have an efficient energy transfer among variable converter components, special control techniques of the converter must be considered to diminish switching losses. The presented LLC resonant converter is controlled under soft-switching...
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