A Self-Adaptive Wireless Power Transfer System to Cancel the Reactance

Shi, Lixin; Alou, P.; Oliver, J. A.; Rodrı́guez, Juan Carlos; Delgado, Alberto; Cobos, J.A.

doi:10.1109/tie.2020.3044817

Cited by 21 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the inductive behavior of a FET bridge-based variable reactor results in hard switching, which increases the switching loss [20]. To avoid hard switching, a higher value C 2 is required such that the variable reactor always behaves capacitive and achieves soft switching, as discussed in [25].…”

Section: E Evaluation Of Various Capacitance Errorsmentioning

confidence: 99%

“…To overcome these limitations, pulse-width modulation controlled switched capacitors [16]- [19] and field-effect transistor (FET) bridge-based variable reactors [20]- [25] can be used as they do not require mechanical components, can handle high power, and can be miniaturized. Among them, the FET bridge-based variable reactor is characterized by its ease of control at the transmitter side; current and volt-age phases must not be measured for control.…”

Section: Introductionmentioning

confidence: 99%

“…In [23], a receiver-side FET bridge-based variable reactor was used to compensate for the detuning of the resonant frequency owing to natural tolerance and cross-coupling among multiple receivers. In [25], the 6.78-MHz operation of a FET bridge-based variable reactor in a receiver was demonstrated.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Communication-Less Receiver-Side Resonant Frequency Tuning for Magnetically Coupled Wireless Power Transfer Systems

et al. 2023

View full text Add to dashboard Cite

Compensating for deviations in the resonant frequency is crucial in magnetic resonance coupling wireless power transfer (WPT) systems. Thus, this study proposes a communication-less receiverside resonant frequency-tuning scheme that compensates for the reactance in the receiver without communicating with the transmitter. The proposed scheme comprises an inductor-capacitor-capacitor compensation topology at the transmitter and a half-bridge circuit at the receiver, whose operating phase is set to be orthogonal to the receiver current. Resonant frequency tuning can be achieved by adjusting the DC voltage applied to the half-bridge circuit to maximize the power received at the load. The reactance compensation ability of the proposed scheme is analyzed through experiments on a 200 kHz WPT system. When the secondary capacitance deviated from -20% to +20%, the efficiency degradation was maintained within 6.7% with the proposed scheme, whereas the efficiency degraded by up to 33.3% without compensation.

show abstract

Section: E Evaluation Of Various Capacitance Errorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Communication-Less Receiver-Side Resonant Frequency Tuning for Magnetically Coupled Wireless Power Transfer Systems

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Various control methods have been proposed at home and abroad to improve the performance of the control system, such as adaptive control [5], robust control [6], sliding mode control [7,8], fuzzy control [9], etc. Among them, in terms of response speed and dynamic performance that meet the system requirements, sliding mode control is easy to implement and easy to design.…”

Section: Introductionmentioning

confidence: 99%

An Anti-Interference Control Method for an AGV-WPT System Based on UIO-SMC

Hou

Huang

2021

WEVJ

View full text Add to dashboard Cite

During the wireless charging of an automated guided vehicle (AGV), the output voltage is unstable due to changes in parameters such as coil mutual inductance and load resistance caused by external interferences and internal mismatches of the system. In this paper, an integral sliding mode control method based on an unknown input observer (UIO) containing predictive equations is designed to build an inductor–capacitor–capacitor-series (LCC-S) topology model for wireless power transfer (WPT). The observer designed by this method can perceive changes in the secondary resistance parameter and the mutual inductance of the primary and secondary coils. The design with the prediction equation speeds up the convergence of the observer to the true value. The observer’s compensation of the control system avoids the occurrence of integral oversaturation. The experimental results show that, based on the UIO-SMC system output, voltage can be accurately controlled to meet the requirement for a given voltage. The effect of suppressing disturbance is better than with SMC and PI control. When the system parameter changes, it has better voltage anti-interference performance and stronger ripple suppression.

show abstract

“…A novel method using an auxiliary self-adaptive reactance circuit to tune the RX side is proposed as one of the contributions of this research work [89], and [99]. The self-adaptive reactance circuit (Figure 3.1) is named as synchronous series compensator (SSC), which can present capacitive or inductive behavior and automatically compensate the reactance of the series circuit when mismatching happens.…”

Section: The Proposed Reactance Cancelling Techniquementioning

confidence: 99%

Advanced Wireless Power Transfer Technologies : Reactance Cancelling and Inverse Coupled Current Doubler Rectifier

Shi¹

View full text Add to dashboard Cite

Mazaheri and so on. I am grateful to have shared this important phase of my life with you in Madrid. To all the laughters, beers, dinners, Wednesday movies and seminars.Finally, I would like to dedicate this thesis to my parents, Tongxi Shi and Xianhua Wei. Your never-ending love and unconditional support have always given me one more reason for being a better version of myself. In every step forward of my life, I have owed them a great debt of thanks that cannot be expressed in any words. Also, I would like to thank my two elder sisters for taking care of our parents while I am staying far away from home, which helps me stay focused on this thesis.

show abstract

A Self-Adaptive Wireless Power Transfer System to Cancel the Reactance

Cited by 21 publications

References 29 publications

Communication-Less Receiver-Side Resonant Frequency Tuning for Magnetically Coupled Wireless Power Transfer Systems

Communication-Less Receiver-Side Resonant Frequency Tuning for Magnetically Coupled Wireless Power Transfer Systems

An Anti-Interference Control Method for an AGV-WPT System Based on UIO-SMC

Advanced Wireless Power Transfer Technologies : Reactance Cancelling and Inverse Coupled Current Doubler Rectifier

Contact Info

Product

Resources

About