Expandable N-Legged Converter for Dynamic Wireless Power Transfer

Farajizadeh, Farzad; Vilathgamuwa, D.M.; Jayathurathnage, Prasad; Ledwich, Gerard

doi:10.1109/epepemc.2018.8521754

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…An N number of charging pads requires 4N switches and 2N legs in an H-bridge inverter. The new N-legged converter [8] was suggested to reduce the volume and weight. The modified converter and modulation method increases the power transfer capability and improves the efficiency of the system.…”

Section: N-legged Convertermentioning

confidence: 99%

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A Five Leg Converter with Multi-Transmitter for an In-Motion Charging System

Yuvaraja

Narayanamoorthi

2022

J. Phys.: Conf. Ser.

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A dynamic wireless power transfer (DWPT) extends the driving range of an Electric Vehicle (EV). The dependency of the bulk volume energy storage device can be reduced by electrified highways. The effective concern on the design of charging pads will improve the power transferring profile and the constant charging. The life cycle of the batteries will be increased by DWPT technology. There are several issues related to the coil design in the DWPT system including sensitive misalignment tolerance, volume to weight ratio of the couplers, and electromagnetic exposure limits. The SAE J2954 guides the designer by their developed standards on the DWPT charging system. The power transfer capability of the charging pads maintained maximum level during misalignment conditions by compensation network. The charging couplers positioned on the roadside has driven by an expandable multiple leg converter. The five-leg converter is proposed in this paper to energize the four charging couplers and the single receiver is used to charge the battery.

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Section: N-legged Convertermentioning

confidence: 99%

“…The converter requires N+1 legs and 2*(N+1) switches to energize the N number of charging pads. The designed system [8] contains four legs and three pads. Additionally, the charging pads are closely spaced.…”

Section: N-legged Convertermentioning

confidence: 99%

A Five Leg Converter with Multi-Transmitter for an In-Motion Charging System

Yuvaraja

Narayanamoorthi

2022

J. Phys.: Conf. Ser.

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“…One of the main goals of this paper is to form a uniform trans coupling profile in a segmented DWPT system as it can give rise to a uniform transferred power [23]. This is not achievable unless the transmitters are placed near to each other, which will in turn increase the cross coupling between them.…”

Section: Trans Coupling and Magnetic Coordinationmentioning

confidence: 99%

“…This can be achieved with a reduced number of power electronic switches in the driving system and a less volume of copper and ferrite in the magnetic system compared to the conventional systems. A brief comparison of the proposed converter with the conventional DDQ system is presented in [23]. In this paper, a more in-depth study is done on the effect of cross couplings amongst the transmitters, and transition between different modes of operation.…”

Section: Introductionmentioning

confidence: 99%

Expandable N-Legged Converter to Drive Closely Spaced Multitransmitter Wireless Power Transfer Systems for Dynamic Charging

Farajizadeh

Vilathgamuwa

Jovanović

et al. 2020

IEEE Trans. Power Electron.

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Expandable and flexible wireless power transfer (WPT) systems have been in demand in numerous industry applications, especially for dynamic chargers in electric vehicles. Those systems, however, brings about certain technical issues such as modulation technique and topology of the transmitter-side, and transferred power profile of the transmitters. In this paper, a new converter topology to drive closely spaced segmented Dynamic Wireless Power Transfer (DWPT) systems is proposed. The proposed converter can be expanded to cater for different number of transmitters, and it can provide a uniform transferred power profile throughout the path of transmitter coils, known as track. Furthermore, this study focuses on analyzing the operation of the converter and the effect of closely spaced transmitters over its operation. To show the effectiveness of the proposed topology and its modulation technique, the converter is simulated and experimentally tested using a laboratory prototype. The results are compared and analyzed, and their close agreement shows the validity of the proposed technique.

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“…In this paper, a four-legged converter (4LC) is chosen to drive the WPT system, as shown in Fig. 3 [10]. The required modulation technique and resultant phasors of the output voltage are shown in Fig.…”

Section: Refined Lcc Compensatormentioning

confidence: 99%

Soft Switching in Closely Spaced Multi-Transmitter Wireless Power Transfer Systems

Farajizadeh

Vilathgamuwa

Jayathurathnage

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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This paper presents a novel idea to enhance the switching of power electronic converters used for driving closely spaced multi-transmitter (MT) wireless power transfer (WPT) systems. Cross coupling amongst the transmitters is an undesirable phenomenon for power electronic converters as they induce an spurious voltage in the adjacent coils. Therefore, with the use of coupled inductors (CPIs) a new method to mitigate the effects of cross couplings is proposed. To study the effect of CPIs on soft switching, an MTWPT system consisting of three transmitters and one receiver is used as a case study. The system is mathematically analysed, numerically simulated, and experimentally tested, and the results validate the efficacy of the proposed approach.

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Expandable N-Legged Converter for Dynamic Wireless Power Transfer

Cited by 6 publications

References 17 publications

A Five Leg Converter with Multi-Transmitter for an In-Motion Charging System

A Five Leg Converter with Multi-Transmitter for an In-Motion Charging System

Expandable N-Legged Converter to Drive Closely Spaced Multitransmitter Wireless Power Transfer Systems for Dynamic Charging

Soft Switching in Closely Spaced Multi-Transmitter Wireless Power Transfer Systems

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