Performance Comparison of the One-Element Resonant EV Wireless Battery Chargers

This study proposes a reconfigurable wireless charging topology, which achieves load-independent constant current (CC) and constant voltage (CV) output without any communication link between transmitting and receiving coils. The proposed topology is suitable for CC-CV modes of battery charging. Inductor (L), capacitor (C) and inductor (L) connected as T type (LCL) compensation with an auxiliary capacitor on the transmitting side and series (S) compensation on the receiving side (LCL-S) is used to achieve load-independent CC and CV output. Reconfiguration has been achieved using single AC switch on transmitting side. Control has been implemented with the information on transmitting side. Load-independent CC and CV output operations have been analysed analytically. The merits of the proposed topology are fixed-frequency operation, simplified control scheme for load-independent CC-CV operation without any communication link. Feasibility of the proposed topology is verified by the experimental prototype with a CC output of 12 A and CV output of 56 V.

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“…From (15), it can be observed that V¯S is independent of load. The inverter output current (I¯i nv ) is given by…”

Section: Analytical Study Of Lcl-s Compensation Topology For CV Outputmentioning

confidence: 99%

“…For reducing the complexity of the control technique in achieving CC or CV output, load-independent compensation topologies are proposed in the literatures [14][15][16]. Different types of compensation networks are examined and resonant conditions for CC or CV output are outlined in [17].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Ravikiran

Keshri

2020

IET Electric Power Applications

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“…The capacitive charging method is a technique of transferring the energy through two barriers plate that close contact to one another. Figure 2 below shows the structure of a capacitive power transfer that consists of inverter, primary side, capacitive coupler, secondary side, rectifier and load [26,27]. The dc voltage from the source converted into alternating current (AC) voltage using high frequency inverter.…”

Section: Electrostatic Inductionmentioning

confidence: 99%

Application of inductive coupling for wireless power transfer

Alhamrouni¹,

Iskandar²,

Salem

et al. 2020

IJPEDS

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Considering the massive development that took place in the past two decades, wireless power transfer has yet to show the applicability to be used due to several factors. This work focuses on determining the main parameters like, mutual inductance, and coupling coefﬁcient for a pair of helical coils for wireless power transfer applications. These parameters are important in designing and analyzing a wireless power transfer system based on the phenomenon of inductive/ resonant inductive coupling. Here presents a simple approach based on fundamental laws of physics for determining the coupled coil parameters for single layered helical coils. The results conducted by computer simulation which is MATLAB. Furthermore, this analysis is used to study the effect of change in coil diameter, mutual inductance coefficient and change in distance between coils on parameters like self and mutual inductance of coupled coils which is of great importance in Wireless Power Transfer applications. The research yielded promising results to show that wireless power transfer has huge possibility to solve many existing industrial problems.

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“…The growing interest in the electrification of the automotive industry is spurring the development of new efficient electric and electronic components, such as electric vehicle drives [1,2], wireless charging systems [3][4][5], and converters [6]. In electric vehicle drives, spindle and many industrial applications, the flux-weakening (FW) operations are almost always required.…”

Section: Introductionmentioning

confidence: 99%

Electro-Magnetic and Structural Analysis of Six-Pole Hybrid-Excited Permanent Magnet Motors

2021

Self Cite

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Potentials and limits of the Hybrid-Excitation Permanent-Magnet (HEPM) synchronous machine are dealt with in this paper. A six-pole machine is taken into consideration, and both parallel and series configurations are analysed and compared. Taking advantage of the rotor excitation coils, the permanent magnet (PM) rotor flux can be adjusted according to the operating speed to improve its performance parameters. The electro-magnetic force is analysed in its first harmonic and in the complete shape. Moreover, a comparison between analytical and numerical formulation has been done for the rotor current control. In particular, the speed range is extended, and electro-mechanical torque and power are increased, as well as the efficiency. It will be shown that the rotor flux reduction by using the excitation winding yields an improvement of the motor performance. The main advantage will be obtained during the flux-weakening operations. In this paper, different rotor topologies will be analysed to highlight the advantages and drawbacks of each of them, and how it is possible to achieve higher speed with higher torque and without high saliency ratio. A magnetic network will be introduced to explain the different contribution of the excitation winding to the rotor flux. Furthermore, a comparison of the amount of the volume of PM, copper and iron in internal permanent magnet (IPM) motor and HEPM motor will be analysed. Actually, an analysis of the harmonic content in the electro-motive force even varying the excitation current and a mechanical stress analysis of each machine will be shown. Finally, it will be verified that the excitation losses represent a minimum component of the total losses.

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Performance Comparison of the One-Element Resonant EV Wireless Battery Chargers

Cited by 23 publications

References 24 publications

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Application of inductive coupling for wireless power transfer

Electro-Magnetic and Structural Analysis of Six-Pole Hybrid-Excited Permanent Magnet Motors

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