Maximum Efficiency Tracking for Dynamic WPT System Based on Optimal Input Voltage Matching

He, Haojie; Wang, Songcen; Liu, Youwei; Jiang, Cheng; Wu, Xiaokang; Wei, Bin; Jiang, Bingwei

doi:10.1109/access.2020.3041769

Cited by 22 publications

(9 citation statements)

References 25 publications

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“…The magnetic flux Φ p of the transmitter pad can be divided into the primary leakage magnetic flux Φ p,leakage and the mutual magnetic flux Φ m combined with the receiver pad as given in (20). The magnetic flux Φ s of the receiver pad can be divided into the secondary leakage magnetic flux Φ s,leakage and the mutual magnetic flux Φ m combined with the transmitter pad as given in (21). Both Φ p,leakage and Φ s,leakage can be derived using the number of turns, the current of each coil, and the leakage inductance through the transformer model as given in (22) and (23), respectively [11].…”

Section: Loss Analysis Of Lctmentioning

confidence: 99%

“…This is because the LCC compensation topology on the primary side has the character that the current of the primary coil is not affected by load and mutual inductance. It is more stable and secure than other topologies when there is a large misalignment between primary and secondary coils [21]. Because of these advantages, DS-LCC and LCC-S compensation topologies are widely adopted among high-order compensation topologies for IPT converters [22,23].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Kim

2021

Energies

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Compensation topologies of the inductive power transfer (IPT) converter for electric vehicles (EVs) have been researched in previous works. However, a methodology for designing a compensation topology based on the efficiency of the IPT converter has been barely discussed. This paper proposes an optimal design methodology for compensation parameters to achieve optimal efficiency of the IPT converter with LCC-S. The optimal output voltage is derived using the losses analysis of the IPT converter, and the IPT converter is designed for the optimal output voltage to achieve the optimal efficiency. Furthermore, the battery management (BM) converter on the receiving side is designed based on the output voltage of the IPT converter, the fluctuation range of the coupling coefficient, and the battery charging voltage. The validity of the proposed IPT converter design methodology is verified by designing different compensation parameters and BM converters. The power rating of the three design cases is 3.3 kW with the same magnetic pads satisfying the SAE J2954 WPT 1 class.

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Section: Loss Analysis Of Lctmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Kim

2021

Energies

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“…When the WPT system is used for charging batteries, it is needed to control the output voltage or current [16]. There are four types of technology to realize the CC/CV output of WPT system [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Firstly, an additional DC/DC converter is used behind the secondary side rectifier to achieve CC/CV output [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A MCR‐WPT system based on LCL‐S/P hybrid compensation network with CC/CV and maximum power optimization suiting for battery charging

Li,

Gong,

Liu

et al. 2024

IET Power Electronics

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A novel magnetic coupling resonance wireless power transfer (MCR‐WPT) system, which has constant‐current (CC) and constant‐voltage (CV) output characteristics suiting for batteries charging, is proposed in this paper. The hybrid compensation topology is adopted; in detail, the LCL‐P circuit topology is used in the CC mode, while the LCL‐S topology is used in the CV mode. Since the switchable components are only located at the receiving side of WPT, the switching can be controlled by the receiving side based on the batteries’ state without data communication between transmitting side and receiving side. Furthermore, an adjustable frequency tuning method which is based on proportion integration (PI) closed‐loop controlled by the transmitting side is applied to maximize the current of the transmitting coil. This method also can solve the frequency splitting problem, improving the stability and power of the system while the distance of the two sides changes. The performance of the proposed WPT system is verified by simulation and experiments. The experiment results show that the load current variation is less than 3% in the CC mode and the load voltage changes less than 5% in the CV mode, as the load resister changes from 5 to 20 Ω.

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“…Today, Wireless Power Transfer (WPT) technology is used in many applications, from low-power charged toothbrushes to high-powered electric vehicles, such as home electronics, biomedical devices, and portable smart devices [1]- [5]. The most basic benefit that WPT systems provide to the user is that they can save the products from cable clutter and use them in a mobile way.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of inductive power transfer to small household appliances that can operate on induction heating cooktops: wireless electric kettle

Sezer

Altıntaş

2022

Preprint

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In this study, the adaptation of the small household electric kettle to the inductive wireless power transfer system, which will allow it to be used as a load in induction heating cooktops, is presented. In the wireless power transfer system, a transmitter coil is used in the characteristics of the coil used in domestic induction cookers. In order to successfully transfer power, the receiving side is placed on the bottom of the existing corded electric kettle. The magnetic system model consisting of aligned transmitter and receiver coils is created in the Maxwell program. In the created model, the analysis is carried out depending on the air gap and frequency, which are the variables that affect the wireless power transfer. The coil model created to examine the dynamic behavior of the system is used in the simulation of the electronic circuit. The prototype of the system is established in the laboratory and tested under different output power values. Experimental results confirm the magnetic model and simulation results. As a result, wireless power transfer is realized without loss on performance in the electric kettle. System efficiency is greater than 90% specified in the standard and the harmonic currents drawn from the mains are lower than the values determined by the standard. Moreover, the results obtained confirm the usability of the proposal on induction hobs.

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Maximum Efficiency Tracking for Dynamic WPT System Based on Optimal Input Voltage Matching

Cited by 22 publications

References 25 publications

Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

A MCR‐WPT system based on LCL‐S/P hybrid compensation network with CC/CV and maximum power optimization suiting for battery charging

Adaptation of inductive power transfer to small household appliances that can operate on induction heating cooktops: wireless electric kettle

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