Coupler Loss Analysis of Magnetically Coupled Resonant Wireless Power Transfer System

Li, Da; Wu, Xusheng; Gao, Wei; Luo, Di; Gao, Jianxin

doi:10.30941/cestems.2023.00010

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Here the high-frequency full bridge inverter [21] circuit is used. To improve the maximum power transferred to the coil compensation is needed for both sides such as S-S, S-P, P-P, and P-S [22]- [24]. While using the compensation both sides reactive powers observed components are neutralized and transferred only to the active power also the transmitter and receiver voltage and current are in phase as zero power angle (ZPA) [25].…”

Section: Operation Principle Of S-s Resonant Converter With a Battery...mentioning

confidence: 99%

Investigation of 1.5 kW secondary side power controlled method in a inductive wireless power transfer system

Bhavsingh,

Gotluru,

Bhukya

et al. 2024

IJPEDS

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The contemporary and utilitarianism of the existing consumer world is advancing towards the better world technical benefits in the electrical world such as wired phase to wireless phase utilizing its volatile features. This paper addresses the battery performance in constant current (CC), constant voltage (CV) through inductive wireless power transfer (IWPT) systems. To analyze this workable mode, the researcher has proposed the series-series (S-S) compensation topology which is load independent current output. While charging the battery through wireless, the coil resistance is found to be affected by the battery's current and power. To figure out a practical solution, the researcher has introduced novel closed loop bi-directional switches with duty cycle control. The existing theoretical and simulated results have been analyzed with 1.5 kW, 120 mm air-gap and 85 kHz frequency. In this connection, the researcher has self-developed a prototype to better understand the theoretical perceptions of the proposed WPT system.

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Section: Operation Principle Of S-s Resonant Converter With a Battery...mentioning

confidence: 99%

Investigation of 1.5 kW secondary side power controlled method in a inductive wireless power transfer system

Bhavsingh,

Gotluru,

Bhukya

et al. 2024

IJPEDS

View full text Add to dashboard Cite

show abstract

“…But in the literature, as time passes several compensation topologies have developed to achieve near zero input reactive power. A capacitor is added on both sides of the WPT system in different combinations such as series-series (S-S), series-parallel (S-P), parallel-parallel (P-P), and parallel-series (P-S) in that S-S, S-P [12]- [14] are voltage-fed compensators. P-P and P-S are current-fed compensators.…”

Section: Introductionmentioning

confidence: 99%

A receiver-side power control method for series-series magnetic topology in inductive contactless electric vehicles battery charger application

Bhavsingh,

Babu,

Mangu

et al. 2023

IJAAS

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Wireless power transfer (WPT) can be used to charge the battery conveniently and efficiently. In this paper, the investigation of high-efficiency S/S resonant magnetic topology in inductive wireless battery charging of electric vehicles (EVs) is analyzed, designed, and controlled. To regulate the output power efficiently rather than controlling the supply voltage, novel bidirectional switches are introduced to control the output power by using the duty cycle control method. The output power of the secondary side is derived and discussed based on the fundamental harmonic approximation (FHA) approach. A 1.5 kW, 120 mm distance, and 85 kHz resonance frequency are verified in MATLAB/Simulink.

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Misalignment tolerance improvement of loosely coupled transformer with ferromagnetic materials via genetic algorithm

Wang,

et al. 2024

Electrical Materials and Applications

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In wireless power transfer (WPT) systems, misalignment between the primary and secondary coils can decrease the transmission efficiency of the loosely coupled transformer (LCT). Adding ferromagnetic materials or a relay coil is an effective solution for efficiency and misalignment tolerance improvement if extra eddy current loss and hysteresis loss on the ferromagnetic materials or the conduction loss caused by the relay coil is well controlled. The effect of ferrite cores on the transmission efficiency of two‐coil and three‐coil LCTs is analysed from the perspective of loss. By finite element analysis, the dimension of ferrite cores is optimised via the genetic algorithm to improve the efficiency and misalignment tolerance of the LCT. Optimal ferrite core dimension is also verified in a 1‐kW WPT prototype, and experimental results show that, after optimisation, transmission efficiency of the two‐coil LCT can be improved by 2.681% and 8.930% under alignment and the 200‐mm misalignment, and with the proposed control strategy, transmission efficiency of the LCT is always above 94.925% under various misalignment conditions.

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Coupler Loss Analysis of Magnetically Coupled Resonant Wireless Power Transfer System

Cited by 4 publications

References 15 publications

Investigation of 1.5 kW secondary side power controlled method in a inductive wireless power transfer system

Investigation of 1.5 kW secondary side power controlled method in a inductive wireless power transfer system

A receiver-side power control method for series-series magnetic topology in inductive contactless electric vehicles battery charger application

Misalignment tolerance improvement of loosely coupled transformer with ferromagnetic materials via genetic algorithm

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