Cross coupling effects of poly-phase bi-directional inductive power transfer systems used for EV charging

Song, Yuan; Madawala, Udaya K.; J, Thrimawithana Duleepa; Hu, Aiguo Patrick

doi:10.1109/ifeec.2015.7361560

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…Some works have already been conducted in the directions of three-phase coupler pads using single-phase windings [7,17,18]. However, the issue of phase-to-phase cross-coupling turned out to be a problem in the power transferred because of the leaking of flux [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

100 kW Three-Phase Wireless Charger for EV: Experimental Validation Adopting Opposition Method

Colussi

Ganga

et al. 2021

Energies

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This paper presents the experimental validation, using the opposition method, of a high-power three-phase Wireless-Power-Transfer (WPT) system for automotive applications. The system under test consists of three coils with circular sector shape overlapped to minimize the mutual cross-coupling, a three-phase inverter at primary side and a three-phase rectifier at receiver side. In fact thanks to the delta configuration used to connect the coils of the electromagnetic structure, a three-phase Silicon Carbide (SiC) inverter is driving the transmitter side. The resonance tank capacitors are placed outside of the delta configuration reducing in this way their voltage sizing. This WPT system is used as a 100 kW–85 kHz ultrafast battery charger for light delivery vehicle directly supplied by the power grid of tramways. The adopted test-bench for the WPT charger consists of adding circulating boost converter to the system under test to perform the opposition method technique. The experimental results prove the effectiveness of the proposed structure together with the validation of fully exploited simulation analysis. This is demonstrated by transferring 100 kW with more than 94% DC-to-DC efficiency over 50 mm air gap in aligned conditions. Furthermore, testing of Zero-Current and Zero-Voltage commutations are performed to test the performance of SiC technology employed.

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Section: Introductionmentioning

confidence: 99%

100 kW Three-Phase Wireless Charger for EV: Experimental Validation Adopting Opposition Method

Colussi

Ganga

et al. 2021

Energies

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“…FIGURE13. Estimated AC-DC efficiency of 2 × 2 IPT system in Fig.9over load variations in comparison with theoretical upper-bound.…”

mentioning

confidence: 98%

Compensation of Cross-Coupling in MIMO Inductive Power Transfer Systems

Vo,

Sakamaki,

Duong

et al. 2024

IEEE Access

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This paper proposes a design principle for reactance compensation circuit for multipleinput multiple-output (MIMO) inductive power transfer (IPT) where the primary side employs a coil array to send power to a receiving coil array located at the secondary side. Delivering wireless power over multiple streams, MIMO topology is an effective approach to relax strict burdens on system components in high-power IPT applications. An important requirement in MIMO topology is a method to mitigate cross-coupling inside the coil arrays so that load-independent constant-current and constant-voltage can be realized in the same fashion as conventional single-input single-output IPT. Based on transfer matrix analysis, this paper proposes a design principle indicating that passive compensation circuit should implement the negative of the cross-coupling's reactance matrix to cancel it in the reactance domain. The proposed design is independent of the transmission distance, applicable to MIMO IPT systems at arbitrary scale and does not require the coil arrays to employ any decoupling structure. Full-wave electromagnetic simulations with 3 × 2 MIMO and experiments with 2 × 2 MIMO are provided to verify effectiveness and feasibility of the proposed scheme.

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A comprehensive overview of inductive pad in electric vehicles stationary charging

et al. 2020

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Cross coupling effects of poly-phase bi-directional inductive power transfer systems used for EV charging

Cited by 11 publications

References 25 publications

100 kW Three-Phase Wireless Charger for EV: Experimental Validation Adopting Opposition Method

100 kW Three-Phase Wireless Charger for EV: Experimental Validation Adopting Opposition Method

Compensation of Cross-Coupling in MIMO Inductive Power Transfer Systems

A comprehensive overview of inductive pad in electric vehicles stationary charging

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