Analysis, Design, and Implementation of Accurate ZVS Angle Control for EV Battery Charging in Wireless High-Power Transfer

Jiang, Yongbin; Wang, Laili; Wang, Yue; Liu, Junwen; Li, Xiang; Ning, Gaidi

doi:10.1109/tie.2018.2795523

Cited by 144 publications

(38 citation statements)

References 30 publications

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“…where m[•] is the operator that returns the imaginary part of its argument. By (6) and (7), relation (17) is rewritten in the following polynomial form:…”

Section: Tsr Methodsmentioning

confidence: 99%

“…By (4), (6) and 7, the phase relations between i T and v s,1 at very high and very low supply angular frequency are…”

Section: Phase Regulatormentioning

confidence: 99%

“…Inductive power transfer (IPT) is a viable technology that allows getting rid of any grid connection while charging the battery of a mobile equipment, including electric vehicles (EVs) [1,2]. Specifically, commercial IPT systems (IPTSs) that transfer few kW for the charge of parked EVs are available on the market [3,4], while prototypal IPTSs of tens of kW have been recently assembled [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Frequency Tuning in Inductive Power Transfer Systems

Bertoluzzo

Buja

2020

Electronics

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Inductive power transfer systems (IPTSs) systems are equipped with compensation networks that resonate at the supply frequency with the inductance of the transmitting and receiving coils to both maximize the power transfer efficiency and reduce the IPTS power sizing. If the network and coil parameters differ from the designed values, the resonance frequencies deviate from the supply frequency, thus reducing the IPTS efficiency. To cope with this issue, two methods of tuning the IPTS supply frequency are presented and discussed. One method is aimed at making resonant the impedance seen by the IPTS power supply, the other one at making resonant the impedance of the receiving stage. The paper closes by implementing the first method in an experimental setup and by testing its tuning capabilities on a prototypal IPTS used for charging the battery of an electric vehicle.

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“…where m[•] is the operator that returns the imaginary part of its argument. By (6) and (7), relation (17) is rewritten in the following polynomial form:…”

Section: Tsr Methodsmentioning

confidence: 99%

“…By (4), (6) and 7, the phase relations between i T and v s,1 at very high and very low supply angular frequency are…”

Section: Phase Regulatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency Tuning in Inductive Power Transfer Systems

Bertoluzzo

Buja

2020

Electronics

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“…In the past decade, scholars have carried out many studies on theoretical analyses and practical applications of MCR-WPT which has gradually become the most efficient technology for medium-short distance wireless energy transmission. It is widely applied in electric vehicles [2], consumer electronic products [3], implantable medical instruments [4], and other lower power fields.…”

Section: Introductionmentioning

confidence: 99%

Frequency Splitting and Transmission Characteristics of MCR-WPT System Considering Non-Linearities of Compensation Capacitors

Liu

Wang

et al. 2020

Electronics

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The frequency splitting phenomenon and transmission characteristics have been research hotspots in the field of magnetically coupled resonance wireless power transfer (MCR-WPT). In this paper, non-linear dynamics theory was innovatively introduced into the research, and non-linear coupled transmission dynamics modelling of the MCR-WPT system was established considering the non-linearities of the compensation capacitor. The mechanism of the frequency splitting phenomenon of the MCR-WPT system was revealed through systematic mathematical analyses based on the modelling. The analysis results showed that the system usually has dual natural frequencies which are low resonance frequency and high resonance frequency. Based on non-linear dynamics theory, the transmission characteristics of the system with different non-linear parameters were discussed comprehensively in relation to the modelling. The results of the numerical simulations and theoretical analyses showed that non-linear parameters can cause the jumping phenomena with the output responses, and the output responses in the vicinities of the lower resonance frequencies were extremely sensitive to changes in the coupling coefficient. According to analyses of the linear and non-linear systems, the energy transmissions performed in the vicinity of the high resonance frequency had a wider working frequency band and a better transmission stability under non-linear conditions.

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“…On this basis, a switching control method was proposed to switch the work mode of the system when the EV enters the charging area, which is beneficial for improving the system power capacity, without increasing the voltage and current stress. In the literature [12], Jiang et al proposed a control strategy with a zero voltage switching angle (ZVSA) loop to realize the constant current (CC) charging for the battery, and to achieve the zero voltage switching (ZVS) operation of the primary inverter. In the literature [13], a highly efficient nonlinear parity-time (PT)-symmetric model for wireless power transfer (WPT) was proposed.…”

Section: Introductionmentioning

confidence: 99%

Research on an EV Dynamic Wireless Charging Control Method Adapting to Speed Change

Tan

Zhao

Ju³

et al. 2019

Energies

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In order to solve the problem of the electric vehicle (EV) charging amount fluctuation caused by the variation of driving speed during dynamic wireless charging, this paper proposes an EV dynamic wireless charging control method adapting to speed change. Firstly, a dynamic wireless charging model based on a long-track transmitting coil is established, and the expression of the charging power of each load under multi-load situation is obtained. Secondly, the influence of the EV charging number and maximum driving speed on the range of system parameters is studied. Subsequently, the method for determining the load resistance value according to the driving speed under a multi-EV charging condition is further discussed. Afterwards, a charging power control method adapting to the speed variation by load adjustment is proposed. By adjusting the equivalent load of the variable-speed charging EV, its speed variation range can reach 20~60 km/h, while the remaining EVs’ charging power fluctuation range can be kept within 10%~15%. Finally, the experimental prototype is built to verify the above-mentioned control method.

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Analysis, Design, and Implementation of Accurate ZVS Angle Control for EV Battery Charging in Wireless High-Power Transfer

Cited by 144 publications

References 30 publications

Frequency Tuning in Inductive Power Transfer Systems

Frequency Tuning in Inductive Power Transfer Systems

Frequency Splitting and Transmission Characteristics of MCR-WPT System Considering Non-Linearities of Compensation Capacitors

Research on an EV Dynamic Wireless Charging Control Method Adapting to Speed Change

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