TY - GEN
T1 - Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems
AU - Yang, Yun
AU - Tan, Siew Chong
AU - Ron Hui, Shu Yuen
N1 - Publisher Copyright:
© 2019 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/9
Y1 - 2019/9
N2 - A conventional Qi-compliant wireless power transfer (WPT) system comprises an amplitude-shift keying (ASK) modulator and a DC regulator at the receiver side. The ASK modulator sends power demand signals back to the transmitter by means of backscatter to adjust the input power, such that the DC regulator has sufficient headroom to maintain well-regulated output voltage. Alternatively, in this paper, a communication-free control scheme is proposed for Qicompliant WPT systems without a DC regulator. The output voltage is controlled by the ASK modulator without any communication between the transmitter and the receiver. Therefore, the switched transistor bridge of the transmitter can be controlled to track the maximum energy efficiency (MEE) of the WPT system. The proposed control scheme is simple and intuitive, which can be easily implemented in low-price digital controllers.
AB - A conventional Qi-compliant wireless power transfer (WPT) system comprises an amplitude-shift keying (ASK) modulator and a DC regulator at the receiver side. The ASK modulator sends power demand signals back to the transmitter by means of backscatter to adjust the input power, such that the DC regulator has sufficient headroom to maintain well-regulated output voltage. Alternatively, in this paper, a communication-free control scheme is proposed for Qicompliant WPT systems without a DC regulator. The output voltage is controlled by the ASK modulator without any communication between the transmitter and the receiver. Therefore, the switched transistor bridge of the transmitter can be controlled to track the maximum energy efficiency (MEE) of the WPT system. The proposed control scheme is simple and intuitive, which can be easily implemented in low-price digital controllers.
KW - Amplitude-shift keying (ASK) modulator
KW - Communication-free
KW - DC regulator
KW - Maximum energy efficiency (MEE)
KW - Qi-compliant wireless power transfer (WPT) system
UR - http://www.scopus.com/inward/record.url?scp=85076737324&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2019.8912496
DO - 10.1109/ECCE.2019.8912496
M3 - Conference article published in proceeding or book
AN - SCOPUS:85076737324
T3 - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
SP - 4955
EP - 4960
BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Y2 - 29 September 2019 through 3 October 2019
ER -
