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

Zhuo, Kang; Luo, Bin; Zhang, Yanling; Zuo, Yuefei; Liu, Shengbin

doi:10.1587/elex.16.20190693

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…This technology has now emerged as an essential application in diverse fields such as autonomous underwater vehicles (AUVs), unmanned aerial vehicles (UAVs), and electric vehicles (EVs) [1,2,3,4,5]. Current research efforts on WPT systems have mainly centered on studies of converter topologies [6,7], compensation topologies [8,9], coupling mechanisms [4,10,11], and control strategies [12,13]. Among these areas of inquiry, the investigation of converter topologies represents a significant facet of WPT technological advancement.…”

Section: Introductionmentioning

confidence: 99%

A double half-bridge series-matrix converter with symmetric modulation for single-stage wireless power transmission without polarity detection

Zhang,

Hong,

Jiang

et al. 2024

IEICE Electron. Express

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Wireless power transfer requires multilevel energy conversion for energy transfer, resulting in a bulky system. This paper proposes a direct AC-AC converter topology denoted as double half-bridge series-matrix converter and introduces a symmetric modulation method that eliminates the need for input voltage polarity detection. The converter circumvents DC conversion and operates at a unit power factor without the assistance of power factor correction. A 1kw prototype was constructed and the same control strategy was adopted, without considering the polarity or magnitude of the input voltage, verifying the accuracy and reliability of the proposed topology. The transmission efficiency was achieved at 91.43%.

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Section: Introductionmentioning

confidence: 99%

A double half-bridge series-matrix converter with symmetric modulation for single-stage wireless power transmission without polarity detection

Zhang,

Hong,

Jiang

et al. 2024

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

Dual receiver series topology for bipolar segmented DWPT system

Zou,

Xu,

et al. 2024

AIP Advances

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For a segmented dynamic wireless power transfer (DWPT) system, when electric vehicles (EVs) move over two adjacent transmitting coils, the received power fluctuates greatly and has some loss. Arming at this problem, this paper proposes a dual receiver segmented DWPT topology to reduce the received power fluctuation of the receiving coil passing through the rail junction during the moving process of the EV. Through magnetic field analysis in this paper, tuning the current phase difference between two adjacent transmitting coils to 180° can enhance the magnetic field. In this paper, a dual receiver series topology (DRST) is designed to pick up power, which consists of four fully controlled components and four diodes. According to EVs’ real-time position, the segment DWPT system has three working modes and six working states under the control of DRST. Finally, experiments are carried out. Compared to the single-receiving-coil system, DRST is effective in improving the average output power from 2.007 to 5.657 W and significantly reducing the power fluctuation.

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Performance enhancement of wireless battery charger by a two-phase parallel inductive power transfer topology

Chen

Lai

Juan

et al. 2023

IEICE Electron. Express

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In this study, a wireless battery charger based on a two-phase parallel inductive power transfer (IPT) topology is developed. The charging power is shared by the two-phase parallel IPT circuits to improve efficiency. The power transferring distance can also be increased by adding the coils of the second phase. A hybrid resonant compensation of LCC-LCC/LCC-S is adopted to provide stable current or voltage output for charging the battery pack. The wireless closedloop controller is implemented via RF communication. The coils of two-phase IPT circuits share the same magnetic field space to avoid increasing system volume. Decoupling capacitors are added to the RXs to eliminate the cross-coupling effect. The proposed two-phase parallel IPT-based wireless battery charger and a single-phase IPT-based charger are both constructed. The rated output voltage and current are 86.4V and 6A for charging a common 72V/36Ah battery pack. Compared with the single-phase topology, the topology of a two-phase parallel can extend the air gap distance for providing the same output power. The efficiency is also increased by about 3% in CC mode and 2% in CV mode.

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

Cited by 3 publications

References 30 publications

A double half-bridge series-matrix converter with symmetric modulation for single-stage wireless power transmission without polarity detection

A double half-bridge series-matrix converter with symmetric modulation for single-stage wireless power transmission without polarity detection

Dual receiver series topology for bipolar segmented DWPT system

Performance enhancement of wireless battery charger by a two-phase parallel inductive power transfer topology

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