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This paper investigates receive power control for multiuser inductive power transfer (IPT) systems with a single-frequency coil array. The primary task is to optimize the transmit coil currents to minimize the total input power, subject to the minimum receive powers required by individual users. Due to the complicated coupling mechanism among all transmit coils and user pickups, the optimization problem is a non-convex quadratically constrained quadratic program (QCQP), which is analytically intractable. This paper solves the problem by applying the semidefinite relaxation (SDR) technique and evaluates the performance by full-wave electromagnetic simulations. Our results show that a single-frequency coil array is capable of power control for various multiuser scenarios, assuming that the number of transmit coils is greater than or equal to the number of users and the transmission conditions for individual users are uncorrelated.

- Publication
- IEICE TRANSACTIONS on Communications Vol.E101-B No.10 pp.2222-2229

- Publication Date
- 2018/10/01

- Publicized
- 2018/04/05

- Online ISSN
- 1745-1345

- DOI
- 10.1587/transcom.2017EBP3387

- Type of Manuscript
- PAPER

- Category
- Antennas and Propagation

Quang-Thang DUONG

Nara Institute of Science and Technology

Minoru OKADA

Nara Institute of Science and Technology

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Quang-Thang DUONG, Minoru OKADA, "Receive Power Control in Multiuser Inductive Power Transfer System Using Single-Frequency Coil Array" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 10, pp. 2222-2229, October 2018, doi: 10.1587/transcom.2017EBP3387.

Abstract: This paper investigates receive power control for multiuser inductive power transfer (IPT) systems with a single-frequency coil array. The primary task is to optimize the transmit coil currents to minimize the total input power, subject to the minimum receive powers required by individual users. Due to the complicated coupling mechanism among all transmit coils and user pickups, the optimization problem is a non-convex quadratically constrained quadratic program (QCQP), which is analytically intractable. This paper solves the problem by applying the semidefinite relaxation (SDR) technique and evaluates the performance by full-wave electromagnetic simulations. Our results show that a single-frequency coil array is capable of power control for various multiuser scenarios, assuming that the number of transmit coils is greater than or equal to the number of users and the transmission conditions for individual users are uncorrelated.

URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3387/_p

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@ARTICLE{e101-b_10_2222,

author={Quang-Thang DUONG, Minoru OKADA, },

journal={IEICE TRANSACTIONS on Communications},

title={Receive Power Control in Multiuser Inductive Power Transfer System Using Single-Frequency Coil Array},

year={2018},

volume={E101-B},

number={10},

pages={2222-2229},

abstract={This paper investigates receive power control for multiuser inductive power transfer (IPT) systems with a single-frequency coil array. The primary task is to optimize the transmit coil currents to minimize the total input power, subject to the minimum receive powers required by individual users. Due to the complicated coupling mechanism among all transmit coils and user pickups, the optimization problem is a non-convex quadratically constrained quadratic program (QCQP), which is analytically intractable. This paper solves the problem by applying the semidefinite relaxation (SDR) technique and evaluates the performance by full-wave electromagnetic simulations. Our results show that a single-frequency coil array is capable of power control for various multiuser scenarios, assuming that the number of transmit coils is greater than or equal to the number of users and the transmission conditions for individual users are uncorrelated.},

keywords={},

doi={10.1587/transcom.2017EBP3387},

ISSN={1745-1345},

month={October},}

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TY - JOUR

TI - Receive Power Control in Multiuser Inductive Power Transfer System Using Single-Frequency Coil Array

T2 - IEICE TRANSACTIONS on Communications

SP - 2222

EP - 2229

AU - Quang-Thang DUONG

AU - Minoru OKADA

PY - 2018

DO - 10.1587/transcom.2017EBP3387

JO - IEICE TRANSACTIONS on Communications

SN - 1745-1345

VL - E101-B

IS - 10

JA - IEICE TRANSACTIONS on Communications

Y1 - October 2018

AB - This paper investigates receive power control for multiuser inductive power transfer (IPT) systems with a single-frequency coil array. The primary task is to optimize the transmit coil currents to minimize the total input power, subject to the minimum receive powers required by individual users. Due to the complicated coupling mechanism among all transmit coils and user pickups, the optimization problem is a non-convex quadratically constrained quadratic program (QCQP), which is analytically intractable. This paper solves the problem by applying the semidefinite relaxation (SDR) technique and evaluates the performance by full-wave electromagnetic simulations. Our results show that a single-frequency coil array is capable of power control for various multiuser scenarios, assuming that the number of transmit coils is greater than or equal to the number of users and the transmission conditions for individual users are uncorrelated.

ER -