Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems

Yun Yang; Siew Chong Tan; Shu Yuen Ron Hui

doi:10.1109/ECCE.2019.8912496

Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems

Yun Yang, Siew Chong Tan, Shu Yuen Ron Hui

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

15 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4955-4960
Number of pages	6
ISBN (Electronic)	9781728103952
DOIs	https://doi.org/10.1109/ECCE.2019.8912496
Publication status	Published - Sept 2019
Event	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019

Publication series

Name	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/Territory	United States
City	Baltimore
Period	29/09/19 → 3/10/19

Keywords

Amplitude-shift keying (ASK) modulator
Communication-free
DC regulator
Maximum energy efficiency (MEE)
Qi-compliant wireless power transfer (WPT) system

ASJC Scopus subject areas

Mechanical Engineering
Control and Optimization
Energy Engineering and Power Technology
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1109/ECCE.2019.8912496

Cite this

Yang, Y., Tan, S. C., & Ron Hui, S. Y. (2019). Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 4955-4960). Article 8912496 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912496

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abstract = "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.",

keywords = "Amplitude-shift keying (ASK) modulator, Communication-free, DC regulator, Maximum energy efficiency (MEE), Qi-compliant wireless power transfer (WPT) system",

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doi = "10.1109/ECCE.2019.8912496",

language = "English",

series = "2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019",

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Yang, Y, Tan, SC & Ron Hui, SY 2019, Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8912496, 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019, Institute of Electrical and Electronics Engineers Inc., pp. 4955-4960, 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, Baltimore, United States, 29/09/19. https://doi.org/10.1109/ECCE.2019.8912496

Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems. / Yang, Yun; Tan, Siew Chong; Ron Hui, Shu Yuen.
2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 4955-4960 8912496 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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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.

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Communication-Free Control Scheme for Qi-Compliant Wireless Power Transfer Systems

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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