A Power and Data Decoupled Transmission Method for Wireless Power Transfer Systems via a Shared Inductive Link

Wireless Power Transfer (WPT) technology is gaining global popularity. However, in some applications, data transmission is also required to monitor the load states. This paper presents an alternative wireless power and data transmission method via the shared inductive link. With the method, the syst...

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Bibliographic Details
Published inEnergies (Basel) Vol. 11; no. 8; p. 2161
Main Authors Li, Xiaofei, Wang, Haichao, Dai, Xin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2018
Subjects
Controllability
Data transfer (computers)
Data transmission
Electric potential
Hysteresis
hysteresis control
Miniaturization
Signal to noise ratio
signal to noise ratio (SNR)
Voltage
wireless power transfer
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Summary:Wireless Power Transfer (WPT) technology is gaining global popularity. However, in some applications, data transmission is also required to monitor the load states. This paper presents an alternative wireless power and data transmission method via the shared inductive link. With the method, the system presents three characteristics: (1) controllability and stability of the output voltage; (2) miniaturization in volume of the system; (3) decoupled transmission of power and data. The output voltage control is realized by a non-inductive hysteresis control method. In particular, data is transferred when the power transmission is blocked (i.e., the hysteresis switch is off). The interference between power and data transmission is very small. The signal to noise ratio (SNR) performance which is relevant to the interference from power transfer to data transfer and data transfer capacity, is studied and optimized. Both simulation and experimental results have verified the proposed method.
ISSN:1996-1073
1996-1073
DOI:10.3390/en11082161