Abstract
Most simultaneous wireless information and power transmission (SWIPT) systems currently operate at a single frequency, where the power and information transmission affect the resonance state of each other. This paper proposes a structure using dual-frequency programmed harmonics modulation (DFPHM). The primary-side inverter outputs a dual-frequency (DF) wave containing the power transmission and information transmission frequencies, while the DF wave is coupled to the secondary side through a common inductive link. After the power and information are transmitted to the secondary side, they are demodulated in different branches. Wave trappers are designed on each branch to reduce the interference of information transmission on power transmission. There is no tight coupling transformer in the system to inject information, so the system order is not high. Experiments verified that the proposed structure based on DFPHM is effective.
Highlights
In recent years, simultaneous wireless information and power transmission (SWIPT) systems have become an emerging research area [1,2]
This paper proposes a SWIPT structure without a tight coupling receiver by using dual-frequency programmed harmonics modulation (DFPHM)
There is only one inverter on the primary side; the two frequencies of power and information transmission are simultaneously transmitted to the secondary side via a common inductive link
Summary
Simultaneous wireless information and power transmission (SWIPT) systems have become an emerging research area [1,2]. The SWIPT system exchanges information such as the primary and secondary voltage, power, and temperature while transmitting power [10] It feedbacks the battery state of wireless charging systems through the reverse transmission of information [11]. In the approach proposed in this paper, there is only one inverter on the primary side, which outputs a PWM voltage wave with two frequencies at the same time, and simultaneously transmits two frequencies to the secondary via a common inductive link. This paper proposes a SWIPT structure without a tight coupling receiver by using DFPHM In this structure, there is only one inverter on the primary side; the two frequencies of power and information transmission are simultaneously transmitted to the secondary side via a common inductive link.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
