A Multi-Inverter High-Power Wireless Power Transfer System With Wide ZVS Operation Range

Liu, Xin; Gao, Fei; Zhang, Yiming; Zhang, Yun; Wang, Tianfeng; Rogers, Dan

doi:10.1109/tpel.2022.3195866

Cited by 17 publications

(5 citation statements)

References 27 publications

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“…In Liu et al, 82 an active and reactive power decoupling algorithm based on the mutual relation function is proposed, which improves the accuracy of the detection of the circulating currents and simplifies the design cost of the control circuit. The multiple inverter system is also applied in microgrids, such as in the article, 19 where the SPHFRIs are used in parallel on the input side of the power supply system, which reduces the voltage stress of the converter and thus reduces the cost of the conversion and improves the output power of the circuit. With the use of electric vehicles, the efficient energy transfer and wireless power transfer characteristics of SPHFRIs make them more widely used.…”

Section: State Of the Art And Future Trendsmentioning

confidence: 99%

“…[11][12][13][14][15] Therefore, the research on SPHFRI has received more and more attention from both academia and industry, and it has been promoted to be used in a variety of applications, as shown in Figure 4. In WPT systems, [16][17][18][19][20] SPHFRI provides highfrequency power, which makes the mutual inductance coil size smaller and the power transmission distance longer. The fast dynamic response of SPHFRI makes it possible to power up the electro-optical communication devices and ultra-high-speed microprocessors where the loads change frequently and irregularly.…”

Section: Introductionmentioning

confidence: 99%

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Review on single‐phase high‐frequency resonant inverters for current sharing in multiple inverter system

Pengyu,

Junfeng,

Mingze

et al. 2023

Circuit Theory & Apps

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SummarySingle‐phase high‐frequency resonant inverters (SPHFRIs) with high power density, fast dynamic response, and high energy conversion efficiency have been widely studied and used in academia and industry. With the development of the modularization concept, the operation of multiple inverter modules is desirable because it can remove the limitations of cost, heat dissipation, and component volume in single inverter operation. However, a critical challenge in multiple inverter systems is that the both the phase and magnitude of the output voltage of each inverter module must be controllable to eliminate circulating currents between inverter modules. Great efforts have been made to solve this problem from three aspects: topology, modulation, and control strategy. In this paper, modulation strategies and topologies of different inverters are presented and reviewed to provide guidance to researchers working in this field. Firstly, multiple inverter system based on the SPHFRI is described and its advantages and disadvantages are analyzed. An important issue in the study of multiple inverter systems is presented, that is, the suppression of circulating current. Secondly, the circulating currents in a multiple inverter system are analyzed and derived from two aspects: (1) magnitude and phase angle and (2) active and reactive currents. Thirdly, the inverters used in the multiple inverter system are introduced, and their operating principles, advantages, and disadvantages are reviewed. A key comparison of several inverters is presented for the benefit of the readers. Fourth, through PI closed‐loop simulation, the performance of different multiple inverter systems for suppressing the circulating current is compared in two situations: (1) with magnitude discrepancy only and (2) with both magnitude and phase discrepancy. Finally, the advantages and disadvantages of each inverter are summarized, and the state of the art and future trends are presented.

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Section: State Of the Art And Future Trendsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review on single‐phase high‐frequency resonant inverters for current sharing in multiple inverter system

Pengyu,

Junfeng,

Mingze

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Therefore, it is necessary to study the problem of low-voltage and high-power demand for fast charging of EVs. In order to improve the transmission power of an IPT system, many scholars have made contributions in related fields and proposed circuit structures such as multi-inverter parallel [10], multi-transmit channel parallel [11], multi-inverter multi-rectifier [12], and so on. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [10], a multi-inverter parallel structure based on a resonant inductor integrated transformer is proposed, which effectively improves the transmission power on the transmitting side. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Influence Analysis of Voltage Imbalance in Input-Series, Output-Parallel (ISOP) Multichannel IPT System

Wang,

Sun,

Liang

et al. 2024

Electronics

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In order to solve the demand for efficient and stable low-voltage, high-power energy transmission capacity of electric vehicle (EV) fast charging, an ISOP-IPT system based on inductor-capacitor-capacitor series (LCC-S) compensation network is proposed. Firstly, the influence of compensation parameter inconsistency on the system is analyzed. On this basis, considering the resistance of coupler coils, the overall transmission efficiency of the system is analyzed. It is found that the voltage imbalance of the system will affect the working state of inverters, and then affect the stability of the system. The system transmission efficiency increases with the increase in mutual inductance. Moreover, the voltage imbalance caused by the inconsistency of compensation parameters and mutual inductance will reduce the transmission efficiency of the system. Finally, it is concluded that in the parameter design of the ISOP-IPT system, mutual inductance should be improved on the basis of ensuring the input voltage equalization of each channel so as to improve the transmission efficiency and working stability of the system. The experimental platform of a two-channel ISOP-IPT system is built and the maximum efficiency is 94.03%, which verifies the correctness of theoretical analysis.

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“…Various control methods have been implemented for automatic vehicle charging applications, where the input and output voltage, resistance characteristics of the primary loop, and the reactive power generated by the primary coil have been regulated, and so on, to improve the system's robustness and ensure the transfer performance against Rx misalignments, time-varying loads, or components fluctuation, and so on. [13][14][15] However, the control mechanisms that have been suggested include communication between the primary side and the secondary side, which reduces the flexibility of wireless charging for automatic vehicles.…”

Section: Introductionmentioning

confidence: 99%

An input‐parallel output‐series wireless power transfer scheme for automatic vehicle modular and misalignment‐tolerant charging

Zhang

Xiao

Wan

et al. 2023

Circuit Theory & Apps

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SummaryFor ameliorating the energy pick‐up capability of wireless charging during the movement of automatic vehicles, this paper proposes an input‐parallel output‐series wireless power transfer (WPT) scheme with modular extension and misalignment tolerance. Dual inductor‐capacitor‐capacitor (LCC) and series capacitor compensated WPT channels are included in this scheme. Input ports at the transmitter (Tx) side are in parallel, which shares an identical voltage source, and output ports at the receiver (Rx) side are in series for modular expansion of output capacity. Asymmetrical coupling coils based on the magnetic field distribution optimization of Tx coils are employed in this design for the tolerance performance under Rx misalignments. An output voltage control method at the Tx side is implemented to regulate the output voltage of each channel without communication. The phase and amplitude of each channel's output are actively consistent through the control, thereby improving the WPT efficiency and avoiding channel damage due to excessive output. Finally, a scaled‐down WPT prototype is established, and the performance of the proposed scheme is verified by experimental results.

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A Multi-Inverter High-Power Wireless Power Transfer System With Wide ZVS Operation Range

Cited by 17 publications

References 27 publications

Review on single‐phase high‐frequency resonant inverters for current sharing in multiple inverter system

Review on single‐phase high‐frequency resonant inverters for current sharing in multiple inverter system

Influence Analysis of Voltage Imbalance in Input-Series, Output-Parallel (ISOP) Multichannel IPT System

An input‐parallel output‐series wireless power transfer scheme for automatic vehicle modular and misalignment‐tolerant charging

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