2016
DOI: 10.5515/jkiees.2016.16.2.112
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Alternative Expressions for Mutual Inductance and Coupling Coefficient Applied in Wireless Power Transfer

Abstract: Alternative analytic expressions for the mutual inductance (Lm) and coupling coefficient (k) between circular loops are presented using more familiar and convenient expressions that represent the property of reciprocity clearly. In particular, the coupling coefficients are expressed in terms of structural dimensions normalized to a geometric mean of radii of two loops. Based on the presented expressions, various aspects of the mutual inductances and coupling coefficients, including the regions of positive, zer… Show more

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Cited by 12 publications
(20 citation statements)
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References 8 publications
(17 reference statements)
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“…In Fig. 1, k is the coupling coefficient [10,11]. A positive k means the same magnetic flux direction crossing the Tx and Rx loops.…”
Section: Optimization Of a Miso System For Maximum Efficiencymentioning
confidence: 99%
See 2 more Smart Citations
“…In Fig. 1, k is the coupling coefficient [10,11]. A positive k means the same magnetic flux direction crossing the Tx and Rx loops.…”
Section: Optimization Of a Miso System For Maximum Efficiencymentioning
confidence: 99%
“…A circle is located above the Tx loop where k is zero or very small. Based on the equivalent circuit analysis in [11], efficiency (η) can be expressed as…”
Section: Optimization Of a Miso System For Maximum Efficiencymentioning
confidence: 99%
See 1 more Smart Citation
“…To reduce the input imaginary power and increase the power transfer efficiency, effective compensation topologies have been introduced and analyzed in [9]. In addition, many researchers have made significant contributions in different areas, such as with a high-efficiency power source [10,11], analysis and modeling of coupling systems, [12][13][14], and optimal load [15,16].…”
Section: Introductionmentioning
confidence: 99%
“…In indirect-fed MR-WPT systems, the Tx part consists of the source loop and the Tx coil, while the Rx part consists of the load loop and the Rx coil. Most user experiences indicate that in practical applications, it is difficult to use strongly-coupled magnetic resonance wireless charging system [2,3]. This is mainly because of the large volume of the Rx part and the spatial restrictions of the Tx and Rx coils.…”
Section: Introductionmentioning
confidence: 99%