Half-Cycle Resonance Tracking for Inductively Coupled Wireless Power Transmission System

Xie, Kai; Huang, Anfeng; Chen, Liuhao; Guo, Shizhong; Zhang, Hanlu

doi:10.1109/tpel.2017.2693383

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…resonance between the Lr2 and C2 so as to release energy to the inductor L2 and load. The equivalent circuit equations can be described as equations (1)- (6). Figure 5.…”

Section: Appl Sci 2019 9 X For Peer Review 4 Of 12mentioning

confidence: 99%

“…Wireless power transfer systems have been studied by many researchers due to the system merits (WPT) such as cordless, wireless charging and safety in power transfer [1][2][3][4][5][6]. Wireless power transfer has been applied to many applications including high power applications such as electric vehicle (EV) chargers and low power applications such as mobile power systems, intelligent mobiles, wearable electronic devices and sensors, etc.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Bidirectional Wireless Power Transfer System for Mobile Power Application

Liao

Lin

2019

Applied Sciences

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This paper presents a bidirectional wireless power transfer system for mobile power applications. A novel 2-switch bidirectional wireless power transfer system with dual-side control is proposed for mobile power applications. Although only two switches are adopted, the energy can be transferred from the transmitter side to the receiver side and vice versa. The term bidirectional means that the power-flow is bidirectional and also that the transmitter is also a receiver and the receiver is also a transmitter. The output energy can be easily controlled by the duty ratios of the two switches. Thus, the proposed bidirectional power transfer system uses only one circuit to achieve bidirectional power transfer. Hence, the system cost and volume can be reduced so that the system is small and convenient for mobile power systems, portable and/or wearable electronic devices. A prototype system is constructed and the experimental results verify the validity of the proposed bidirectional wireless power transfer system.

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“…resonance between the Lr2 and C2 so as to release energy to the inductor L2 and load. The equivalent circuit equations can be described as equations (1)- (6). Figure 5.…”

Section: Appl Sci 2019 9 X For Peer Review 4 Of 12mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Bidirectional Wireless Power Transfer System for Mobile Power Application

Liao

Lin

2019

Applied Sciences

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show abstract

“…However, the complex sensor design and shielding were required to eliminate electromagnetic interference and special compensation circuits, the phase delays are corrected in the sensing loop. In addition, a method of self-oscillating frequency tracking was proposed by tracking the damped natural frequency of the resonant circuit [18], and the frequency tracking was achieved within one half oscillation cycle. This proposed method was realized by synchronizing the working frequency with the damped natural frequency, which could eliminate the detuning effects caused by static and transient changes of the system.…”

Section: Introductionmentioning

confidence: 99%

Mixed-Modulation Method for Adjusting Frequency and Voltage in the WPT Systems With Misalignments and Load Variations

Wen¹,

Zou²,

Li³

et al. 2021

PIER B

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The resonant frequency will be changed, and the load voltage will be unstable with misalignments and load variations in wireless power transfer (WPT) systems. In this paper, the expression for solving the resonant frequency is obtained. The calculation result shows that the resonant frequency is changed with the changes of misalignment and load. First, a new control method of frequency tracking with a Fuzzy proportional-integral (PI) compound controller is proposed, which can eliminate the overshoot of resonant frequency and improve the speed of frequency tracking. Second, a mixed-modulation method for adjusting frequency and voltage is further proposed, which is mainly composed of the selection algorithm of the duty cycle, the phase-shifting angle calculation, and the method of frequency tracking based on the Fuzzy PI compound controller. The appropriate duty cycle is obtained by the selection algorithm of the duty cycle to adjust the load voltage. The phase-shifting angles of different duty cycles are obtained by the phase-shifting angle calculation, which play a role in adjusting the resonant frequency by combining the Fuzzy PI compound controller. The proposed method can not only make the system keep a resonant state, but also make the output voltage across the load stable. A WPT system via magnetically coupled resonance is designed. Calculation and simulation results validating the superiority of the proposed method are given.

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Mid-Range Wireless Power Transfer System for Various Types of Multiple Receivers Using Power Customized Resonator

Koo

et al. 2021

IEEE Access

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Half-Cycle Resonance Tracking for Inductively Coupled Wireless Power Transmission System

Cited by 7 publications

References 23 publications

A Novel Bidirectional Wireless Power Transfer System for Mobile Power Application

A Novel Bidirectional Wireless Power Transfer System for Mobile Power Application

Mixed-Modulation Method for Adjusting Frequency and Voltage in the WPT Systems With Misalignments and Load Variations

Mid-Range Wireless Power Transfer System for Various Types of Multiple Receivers Using Power Customized Resonator

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