Bidirectional Communication in the Inductive WPT System with Injected Information Transmission

Dou, Zhifeng; He, Shuaibiao; Wu, Jie; Jin, Nan; Li, Yuegong; Ma, Dongtang

doi:10.1109/icems.2019.8921797

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…There are three main approaches to achieving signal transmission by shared channel method: carrier modulation, changing the reflected impedance and changing the compensation capacitance [11][12][13][14]. Signal transmission is coupled into the IWPT system through the utilization of four tightly-coupled transformers in [15]. A high-frequency carrier is superimposed on the low-frequency power transmission to realize carrier modulation signal and power synchronous transmission.…”

Section: Introductionmentioning

confidence: 99%

Synchronous power and signal transmission method for inductive wireless power transmission system by modifying compensation capacitance

Dou

et al. 2023

Preprint

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To synchronize the power forward transmission and signal reverse transmission of inductive wireless power transmission (IWPT) system, a signal reverse transmission method by modifying the compensation capacitance is proposed. Firstly, an equivalent circuit of signal reverse transmission circuit was established for the four basic compensation topologies of IWPT system, the relationship between the secondary-side compensation capacitance and the primary-side input impedance was analyzed. The analysis results indicate that the variable-capacitance method is more suitable for topology structures where the secondary coil and compensation capacitor are connected in series. Then, a variable-capacitance modulation method by detecting the phase angle of the input impedance of the primary side for series-series (SS) systems was proposed, and its impact on power transmission was analyzed. To improve the readability of the data at the receiving side, a data frame structure was designed. This structure is easy to identify the starting bit of the data, making it unnecessary for the signal demodulation at the receiving side to start working before the signal modulation at the sending side. Finally, the effectiveness of the method was verified by simulation and experiment. The results show that this method can successfully modulate and demodulate signals when the load and mutual inductance change. The data readability is improved, and the method has little impact on power transmission.

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Section: Introductionmentioning

confidence: 99%

Synchronous power and signal transmission method for inductive wireless power transmission system by modifying compensation capacitance

Dou

et al. 2023

Preprint

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“…Another implementation of extra physical channel is multiple inductive links with multiple carriers [12]- [16]. In these methods, power and data are transferred via independent physical channels, where the power carrier is delivered through one inductive link and the data carrier is transmitted via another.…”

Section: Introductionmentioning

confidence: 99%

A GaN-Based Wireless Power and Information Transmission Method Using Dual-Frequency Programmed Harmonic Modulation

Jin

et al. 2020

IEEE Access

Self Cite

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Information transmission is often required in power transfer to implement control. In this paper, a Dual-Frequency Programmed Harmonic Modulation (DFPHM) method is proposed to transfer two frequencies carrying power and information with the single converter via a common inductive coil. The proposed method reduces the number of injection tightly coupled transformers used to transmit information, thereby simplifying the system structure and improving reliability. The performances of power and information transmission, and the method of information modulation and demodulation, as well as the principles of the control, are analyzed in detail. Then a simulation model is set up to verify the feasibility of the method. In addition, an experiment platform is established to verify that the single converter can transfer the power and information simultaneously via a common inductive coil without using tightly coupled transformers. INDEX TERMS Dual-frequency, full bridge, iteration algorithm, programmed harmonic modulation, wireless power and information transfer.

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A Comparati`ve Study of Resonant Frequency Calculation Based on Leakage-Inductance and Self-Inductance for CET System

Atraqchi

Ameen

Younis

2021

2021 12th International Renewable Energy Congress (IREC)

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Bidirectional Communication in the Inductive WPT System with Injected Information Transmission

Cited by 4 publications

References 7 publications

Synchronous power and signal transmission method for inductive wireless power transmission system by modifying compensation capacitance

Synchronous power and signal transmission method for inductive wireless power transmission system by modifying compensation capacitance

A GaN-Based Wireless Power and Information Transmission Method Using Dual-Frequency Programmed Harmonic Modulation

A Comparati`ve Study of Resonant Frequency Calculation Based on Leakage-Inductance and Self-Inductance for CET System

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