Three‐phase bi‐directional wireless EV charging system with high tolerance to pad misalignment

Song, Yuan; Madawala, Udaya K.; Thrimawithana, Duleepa J.; Vilathgamuwa, D.M.

doi:10.1049/iet-pel.2018.6279

Cited by 20 publications

(10 citation statements)

References 25 publications

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“…Using the first harmonic approximation (FHA) and under the assumption of 100% efficiency, initial system parameters can be defined as in Table I. An initial selection should be made for the percentage (Ψ) of the resonator current to the Tx current as in (5).…”

Section: Design Methodologymentioning

confidence: 99%

Fault Tolerant Modular Inductive Power Transfer System Design Using Resonator Coil

Polat¹

2021

Preprint

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<div>In this paper, a design for an inductive power transfer system with a series-series topology with an intermediate resonator is discussed. The proposed method is an improved method that is derived from a conventional IPT system design. While it is applicable for a wide range of different operations, a contactless slip ring design is the main system under investigation. The idea behind adding a resonator coil is to achieve fault tolerance where the system can operate under various open-circuited fault conditions. The proposed system is a two transmitter and four receiver with an intermediate resonator system where the Rx modules are connected parallel to a common DC-bus. </div><div>The system is found to be fault-tolerant to Rx side open circuit faults. For normal operation at rated power, 90.6\% efficiency was achieved.</div>

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Section: Design Methodologymentioning

confidence: 99%

Fault Tolerant Modular Inductive Power Transfer System Design Using Resonator Coil

Polat¹

2021

Preprint

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“…Other features associated with three phase rotating magnetic field based WPT system is reduced filters and ferrites mass [16], In literature [99], researchers increased charging zone by using three phase couplers. In [177]and [178], developed misalignment tolerant three phase system for dynamic charging and bi directional charging is developed. poly phase system offers same features of three phase system as number of phases increases complexity increases.…”

Section: A Single Phase Systemmentioning

confidence: 99%

“…Advanced power electronic converters, proposed to improve power transfer between coils in influence of misalignment [178]. Also, on mechanical structures designed to reduce the misalignment [249,250].…”

Section: Misalignmentmentioning

confidence: 99%

Inductive Wireless Power Transfer Charging for Electric Vehicles–A Review

Bharatiraja²,

2021

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Considering a future scenario in which a driverless Electric Vehicle (EV) needs an automatic charging system without human intervention. In this regard, there is a requirement for a fully automatable, fast, safe, cost-effective, and reliable charging infrastructure that provides a profitable business model and fast adoption in the electrified transportation systems. These qualities can be comprehended through wireless charging systems. Wireless Power Transfer (WPT) is a futuristic technology with the advantage of flexibility, convenience, safety, and the capability of becoming fully automated. In WPT methods resonant inductive wireless charging has to gain more attention compared to other wireless power transfer methods due to high efficiency and easy maintenance. This literature presents a review of the status of Resonant Inductive Wireless Power Transfer Charging technology also highlighting the present status and its future of the wireless EV market. First, the paper delivers a brief history throw lights on wireless charging methods, highlighting the pros and cons. Then, the paper aids a comparative review of different type's inductive pads, rails, and compensations technologies done so far. The static and dynamic charging techniques and their characteristics are also illustrated. The role and importance of power electronics and converter types used in various applications are discussed. The batteries and their management systems as well as various problems involved in WPT are also addressed. Different trades like cyber security economic effects, health and safety, foreign object detection, and the effect and impact on the distribution grid are explored. Prospects and challenges involved in wireless charging systems are also highlighting in this work. We believe that this work could help further the research and development of WPT systems..

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“…It is possible to find the required cross-coupling (M s ) by using (11) and (12) or (13) and (14). In these equations, θ and M s are unknown parameters.…”

Section: A Effect Of Receiver Cross-couplingmentioning

confidence: 99%

Balancing of Common DC-Bus Parallel Connected Modular Inductive Power Transfer Systems

AYAZ¹

2021

Preprint

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The aim of this paper is to design a modular, fault tolerant multi transmitter(Tx) -multi receiver(Rx) parallel connected common DC bus inductive power transfer(IPT) system to replace slip rings in wind turbines or brushless exciters. In parallel connected common DC bus systems, current unbalance is a major issue which results in thermal stresses and over current or voltages. In this paper, two different new current balancing methods are proposed: Cross-coupled Rx modules and intentional miss-tuning of Rx side resonant frequency. These methods are investigated both analytically and experimentally for a single Tx and two Rx system for a 500 W prototype. The proposed methods are tested independently, and then the combined current balancing method is also investigated. For the same missalignment case cross-coupled/de-tuned has a 55.8% current balancing improvement compared to de-coupled/fullytuned topology.

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Three‐phase bi‐directional wireless EV charging system with high tolerance to pad misalignment

Cited by 20 publications

References 25 publications

Fault Tolerant Modular Inductive Power Transfer System Design Using Resonator Coil

Fault Tolerant Modular Inductive Power Transfer System Design Using Resonator Coil

Inductive Wireless Power Transfer Charging for Electric Vehicles–A Review

Balancing of Common DC-Bus Parallel Connected Modular Inductive Power Transfer Systems

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