Optimum Design of Decoupled Concentric Coils for Operation in Double-Receiver Wireless Power Transfer Systems

Pratik, Ujjwal; Varghese, Benny J.; Azad, Ahmed; Pantic, Zeljko

doi:10.1109/jestpe.2018.2871150

Cited by 51 publications

(15 citation statements)

References 35 publications

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“…However, in most of the existing WPT systems, usually, only one load is powered via the magnetic or electric field [6][7][8][9]. Recently, more and more publications investigated the WPT system with multiple loads [10][11][12][13][14][15][16][17][18]. In [10], a WPT system with two receivers (Rxs) was designed, where the two receiving coils are decoupled by adjusting the winding direction of turns.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, more and more publications investigated the WPT system with multiple loads [10][11][12][13][14][15][16][17][18]. In [10], a WPT system with two receivers (Rxs) was designed, where the two receiving coils are decoupled by adjusting the winding direction of turns. However, it is difficult to add more receiving coils in such a structure, which limits the number of loads.…”

Section: Introductionmentioning

confidence: 99%

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Repeater coil‐based wireless power transfer system powering multiple gate drivers of series‐connected IGBTs

Cheng¹,

Wang

Zhou

et al. 2020

IET Power Electronics

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It is challenging to power a large number of gate drivers of the series-connected insulated gate bipolar transistors (IGBTs) in a high-voltage application because multiple isolated power supplies are needed. In this study, a novel wireless power transfer (WPT) system using repeater coils is designed to solve this problem. Every two repeater coils form a repeater unit, which transfers power to one load. With multiple repeater units in the system, multiple loads can obtain power simultaneously. To eliminate undesirable magnetic couplings between these coils, bipolar coils are used and the two bipolar coils in the same repeater unit are placed perpendicularly. It is derived that constant voltage can be obtained for all the loads, which is especially suitable for powering the IGBT's gate driver. Moreover, the variation of one load power will not affect others. The receiving circuit is designed to transform the received power to the DC voltage compatible with the driving circuits. An experimental setup with six loads has been constructed to validate the proposed WPT system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Repeater coil‐based wireless power transfer system powering multiple gate drivers of series‐connected IGBTs

Cheng¹,

Wang

Zhou

et al. 2020

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…Wireless power transfer (WPT) has been recently in the spotlight of various battery charging applications, transferring power from a few watts, such as in biomedical implants [1], cell phones [2] and other consumer electronics [3] applications, to tens of kilowatts, such as in automotive [4]− [6] and robotics [7]. Regarding the Electric Vehicles (EVs), wireless charging offers a more convenient, safe and user-friendly charging process, with lower maintenance costs due to the absence of moving mechanical parts [6].…”

Section: Introductionmentioning

confidence: 99%

Transmitter Side Control of a Wireless EV Charger Employing IoT

et al. 2020

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“…Then propose a method to eliminate cross-coupling effect between the RXs in a dual-RX WPT system. Compared with other eliminating cross-coupling techniques, such as reactance compensation [20,21], buck-ing coil [22] and multiple resonance frequencies [23,24], the use of bipolar coils can reduce the complexity of the design of the system, and the mutual inductance between the RXs is independent of the distance.…”

Section: Introductionmentioning

confidence: 99%

A coaxial dual-receiver wireless power transfer system with bipolar coils to eliminate cross-coupling and achieve a controllable power distribution

Zhuo

Luo

Zhang

et al. 2020

IEICE Electron. Express

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This paper proposes a dual-receiver wireless power transfer system that uses bipolar coils as a transmitter and receivers. Compared with a traditional dual-receiver system with unipolar coils, the proposed system can effectively and conveniently eliminate cross-coupling between the receivers, and another significant feature of the system is the ease of changing the received power of the two receiver loads by changing the relative angle of the bipolar coils. The mutual inductance of the bipolar coils is modelled by Newman's formula. Then a system design method to eliminate the influence of cross-coupling and realize controllable power allocation is proposed.

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Optimum Design of Decoupled Concentric Coils for Operation in Double-Receiver Wireless Power Transfer Systems

Cited by 51 publications

References 35 publications

Repeater coil‐based wireless power transfer system powering multiple gate drivers of series‐connected IGBTs

Repeater coil‐based wireless power transfer system powering multiple gate drivers of series‐connected IGBTs

Transmitter Side Control of a Wireless EV Charger Employing IoT

A coaxial dual-receiver wireless power transfer system with bipolar coils to eliminate cross-coupling and achieve a controllable power distribution

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