Analysis of Mutual Inductance Between Multi-Single Coupled Coils at Square Structure Using FEM

Nayak, P. Srinivasa Rao; Peddanna, Gundugallu; Kamalapathi, Kuditi; Naick, B. Krishna

doi:10.1109/icecie47765.2019.8974759

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…IPT coil configurations such as circular [22], square [23], and double D [24] have been widely used to achieve high coupling efficiency between coils, thereby maximizing power transfer efficiency and minimizing losses. Among these configurations, the circular flat spiral coil configuration has gained popularity in IPT studies because of its high-power transfer performance [25].…”

Section: Related Studies a Coil And Core Structure In Inductive Power...mentioning

confidence: 99%

Wireless Power Transfer Systems With Composite Cores for Magnetic Field Shielding With Electric Vehicles

Duan,

Lan,

Kodera

et al. 2023

IEEE Access

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The transmitting and receiving coils used in wireless power transfer (WPT) systems in electric vehicles (EVs) have a larger air gap (∼300 mm) and higher transmission power (kW) than those in typical WPT systems used in electrical appliances. However, this could weaken the magnetic field, reduce transfer efficiency, and lead to a public concern regarding potential adverse health effects related to electromagnetic field (EMF) exposure. Therefore, the assessment of compliance with product safety standards, based on international exposure guidelines such as the International Commission on Non-Ionizing Radiation Protection (ICNIRP), is crucial. This study uses the finite element method to analyze a commonly used core-less and core-based WPT system using a composite core material in EVs and scalar potential finite difference method for assessment of human protection. Based on the computational results, two core structures using different types of intermediate insert blocks were analyzed to reduce external magnetic fields and mitigate the human EMF exposure. The WPT system with a core structure improved the transfer efficiency by 34% for a 300 mm air gap over the core-less system. Moreover, this effectively reduced magnetic field leakage by 91.6% and induced electric field by 98.3%, resulting in the reduction of induced electric field in anatomical human body model. The results demonstrated that a WPT system with a composite core can simultaneously improve the transfer efficiency and protect humans from EMF exposure.

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Section: Related Studies a Coil And Core Structure In Inductive Power...mentioning

confidence: 99%

Wireless Power Transfer Systems With Composite Cores for Magnetic Field Shielding With Electric Vehicles

Duan,

Lan,

Kodera

et al. 2023

IEEE Access

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“…The diversity of coil geometries contributes to the founding of many types of couplers. Among the coupler designs are the CSC [40,[42][43][44][45], SC [36,39,46], RC [47][48][49] and DDC coils [17,23,50]. Over the years, some innovative coupler geometry designs have been proposed, for instance, bipolar coil (BC) [51,52] and double-D quadrature coil (DDQC) [28].…”

Section: Related Workmentioning

confidence: 99%

“…In [46], the researchers have tried analyzing multi-single SC that enables the EV battery to charge from one SC to another SC which is along the track either with ferrite or directly air as their core. As expected, the power efficiency of the system increases when the coupled coils are made up of ferrite-cored rather than air-cored.…”

Section: Square and Rectangular Coilsmentioning

confidence: 99%

A brief review: basic coil designs for inductive power transfer

Nanda

Yusoff

Toha

et al. 2020

IJEECS

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The inductive power transfer (IPT) has contributed to the fast growth of the electric vehicle (EV) market. The technology to recharge the EV battery has attracted the attention of many researchers and car manufacturers in developing green transportation. In IPT charging system, the coil design is indispensable in enhancing the EV battery charging process performance. This paper starts by describing the two charging techniques; static charging and dynamic charging before further presents the IPT system descriptions. Afterwards, this paper describes a brief review of coil designs which discusses the critical factors that affect the power transmission efficiency (PTE) including their basic designs, design concepts and features merits. The discussions on the basic coil designs for IPT are of the circular spiral coil (CSC), square coil (SC), rectangular coil (RC), and double-D coil (DDC). Furthermore, the significant advantages and limitations of each research on different geometries are analyzed and discussed in this paper. Finally, this paper evaluates some essential aspects that influence the coil geometry designs in practical.

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Analysis of Mutual Inductance Between Multi-Single Coupled Coils at Square Structure Using FEM

Cited by 2 publications

References 12 publications

Wireless Power Transfer Systems With Composite Cores for Magnetic Field Shielding With Electric Vehicles

Wireless Power Transfer Systems With Composite Cores for Magnetic Field Shielding With Electric Vehicles

A brief review: basic coil designs for inductive power transfer

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