Free Positioning Wireless Charging System Based on Tilted Long-Track Transmitting Coil Array

Zhang, Yiming; Wu, Yuanchao; Pan, Wenbin; Wang, Hui; Shen, Zhenjiang; Li, Xin; Mao, Xingkui; Li, Zhongqi

doi:10.1109/tcsii.2022.3177617

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…Once ia is obtained by (25), it is inserted in the first of (23) to compute vac,Re; then, ia and vac,Re are used in the first of (16) to work out a in the form ).…”

Section: Phase Adjusting Property Of Pivtmentioning

confidence: 99%

“…Instead, if a is equal to 0 a particular case of mode A happens. This mode is denoted as D and its analysis is readily performed recognizing that (16) changes into (14), which in turn comes from (11) and (12). Then the PIVT functioning is described by (11), ( 12) and (28), like in mode C but with the additional condition of having a=0.…”

Section: Phase Adjusting Property Of Pivtmentioning

confidence: 99%

“…A solution to reduce the complexity of the infrastructure is presented in [15], where a PWM technique for a three legs inverter with two outputs is presented. The same scheme that uses three legs to supply two coils is generalized in [16] for the supply of multiple transmitting coils.…”

Section: Introductionmentioning

confidence: 99%

“…Considering that the surface vehicle standard J2954 issued by SAE [17] fixes to 85 kHz the nominal supply frequency fs of the wireless charging station, the PWM technique proposed in [15] is not viable to control the amplitude of the high frequency inverter (HFI) output voltage. Instead, in WPT systems, the phase shift technique (PST) is commonly used [18], [19], even if some authors propose to supply the transmitting coils with a square-wave voltage [16].…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Experimentation of a Novel Modulation Technique for a Dual-Output WPT Inverter

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Buja

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2023

IEEE Trans. Ind. Electron.

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Dynamic wireless power transfer systems require to supply many transmitting coils arranged along a track, thus entailing the use of a large number of inverters or of complex devices that switch the power to the proper coils. This paper proposes a technique that allows to use a single inverter based on a three leg H-bridge to supply two coils with voltages having different and independently adjustable amplitudes. Moreover, the presented technique has the inherent ability of reducing the phase difference between the two output currents when the supplied loads are partially reactive, thus enhancing the power transfer capability of the inverter when both the transmitting coils are temporary coupled with the same pickup. After presenting the technique, the paper analyzes in details the functioning of the dual-output inverter in different load conditions, recognizes the boundaries of four different modes of operation, and gives some introductory hints about the control of the output voltages. The theoretical findings are validated by the results of experimental tests performed on a prototypal setup.

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“…Once ia is obtained by (25), it is inserted in the first of (23) to compute vac,Re; then, ia and vac,Re are used in the first of (16) to work out a in the form ).…”

Section: Phase Adjusting Property Of Pivtmentioning

confidence: 99%