Advances in inductively coupled power transfer technology for rail transit

Wireless power transfer devices are becoming more relevant and widespread. Therefore, an article is devoted to a review, analysis and comparison of compensation topologies for an inductive power transfer. A new classification of topologies is developed. A lot of attention is paid to the problems of the physical fundamentals of compensation work, standards, safety, and five main topology requirements. It is determined, that topologies with the series primary compensating are the most effective in the IPT for charging devices among the four classical schemes. The series-parallel solution is recommended in case of the low output voltage, minimum size of a secondary side coil is achievable. The series-series solution does not depend on the magnetic coupling coefficient and the load on the resonance frequency. For the convenience of displaying and understanding the information, the comparison results are listed in the tables, graphs and dependencies. The main suitable topologies for a certain application are defined. The given conclusions provide a ''one-stop'' information source and a selection guide on the application of compensation topologies both in terms of devices and in terms of power level that is the main value of this paper. During literature analysis and recent trends in the market for wireless power transmission devices, the main possible further ways of developing topologies are underlined. First of all, it concerns increasing the frequency of resonance of compensation topologies, the use of multilevel / multi-pulse / multicoils structures, the study of existing high-frequency semiconductors and the development of the semiconductor and magnetic materials.

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“…Speaking about a high power, it can be EVs, buses, trains [136]. The supply system of Maglev train is developed in [130].…”

Section: A Application Of Compensation Topologiesmentioning

confidence: 99%

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

et al. 2019

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“…An AC/DC stage in the secondary side performs the final conversion stage and feeds the battery/load. The most adopted solution for coil excitation is to use a power electronics converter to generate a voltage square wave on the primary coil [8]. Although capacitors may be used for compensation, some authors propose more complex matching networks to improve transmission gain over wider coupling range [9].…”

Section: System Overview a Power Transfermentioning

confidence: 99%

Simultaneous Wireless Information and GaN-Based Power Transfer Exploiting a Dual Frequency Band

Placzek

Hoeher

Prasobhu

et al. 2018

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

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A simultaneous wireless information and power transfer system employing separated frequency bands for energy and data, dubbed dual-band SWIPT, is investigated. Elementary circuit elements are optimized numerically. An experimental testbed based on a gallium nitride (GaN) full-bridge converter demonstrates data rates in excess of 450 kbps employing onoff keying in conjunction with a simple diode detector for data recovery.

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“…The contactless power supply system adopts a medium voltage DC power supply, which overcomes the problems of traditional AC contact power supply mode, such as pantograph catenary coupling, negative sequence, over the neutral phase, mainline galloping of the contact line, etc. It is an important development direction of green, energysaving, safe, and efficient intelligent traction power supply technology in the future [1]- [2].…”

Section: Introductionmentioning

confidence: 99%

Research on Energy Distribution of Regenerative Braking in Station for Contactless Traction Power Supply System Based on Bidirectional Energy Interaction ICPT System

Zhao

Wang

et al. 2020

IEEE Access

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The regenerative braking energy of high-speed railway accounts for about 10% of traction energy consumption, which will be higher under special conditions. The regenerative braking energy feedback of the contactless traction power supply system needs to be realized by dynamic bidirectional inductively coupled power transfer (ICPT). A novel regenerative braking energy distribution method for the contactless traction power supply system based on dynamic bidirectional energy ICPT (DBEI-ICPT) technology is proposed. Then, the mathematical model of the dynamic bidirectional ICPT technology is established; and the variation of transmission power is analyzed; Theoretical analysis of the system energy distribution and its feedback methods. The relationship between the energy flow and the train running state during braking is carried out. After that, an improved train braking curve and control method based on the ICPT technology is proposed, which can satisfy the requirements of the regenerative braking process before the train enters the station by controlling three phase shift angles of the ICPT technology. The control strategy with feedforward control is introduced into the energy storage system to suppress the bus voltage fluctuation. Besides, a nonlinear disturbance observer (NDO) is introduced to solve the shortcomings of the traditional feedforward control methods that require remote measurement. Finally, the effectiveness of the proposed power supply system as well the control strategy is verified by simulation. Results show that the current feedforward bus voltage regulation control is more suitable for this system for its shorter sampling time and stability.

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Advances in inductively coupled power transfer technology for rail transit

Cited by 33 publications

References 58 publications

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

Compensation Topologies in IPT Systems: Standards, Requirements, Classification, Analysis, Comparison and Application

Simultaneous Wireless Information and GaN-Based Power Transfer Exploiting a Dual Frequency Band

Research on Energy Distribution of Regenerative Braking in Station for Contactless Traction Power Supply System Based on Bidirectional Energy Interaction ICPT System

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