Transmitter-Side Control of Both the CC and CV Modes for the Wireless EV Charging System With the Weak Communication

Liu, Fang; Chen, Kainan; Zhao, Zhengming; Li, Kai; Yuan, Liqiang

doi:10.1109/jestpe.2017.2759581

Cited by 67 publications

(36 citation statements)

References 35 publications

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“…Fang Liu [3]The proposed wireless power transmission for electric vehicle is reliable and cost effective. The transmitter generates constant voltage as well as the constant current addressed as CV and CC,a the charging mode and the transition between the two modes may be enhanced.…”

Section: Literature Surveymentioning

confidence: 99%

Wireless Power Transfer and Vehicle Theft Detection using Block Chaining

2019

IJRTE

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An Electric Vehicle (EV) uses one or more traction motors or electric motors for propulsion. Nowadays the Electric Vehicle charging process is grim. An Electric Vehicle employs the concept of getting charged every time the vehicle is done travelling till a certain distance. The abate cost, alluring userfriendly method to maintain and its environment friendly nature makes the EV populous among many people. Yet, there pertains an issue to charge the vehicle as there are not many charging stations installed at every place. In this paper, we provide, block chain based vehicle charging system with reliable transaction. The vehicle has an inbuilt RFID tag, that is read by the RFID reader in the charging station. The RFID Number is transmitted to the server. The block chain technology is used in the server. If the vehicle goes missing the owner can report the theft to the server if the ID is matched the report is sent to the owner by Short Message Service(SMS) and the charging process will not be initiated. If the ID is not matched then the EV charging starts automatically.

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Section: Literature Surveymentioning

confidence: 99%

Wireless Power Transfer and Vehicle Theft Detection using Block Chaining

2019

IJRTE

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“…Affected by key factors such as high cost and limited driving distance, EV has not been effectively promoted [1]. Charging technology is one of the key technologies of electric vehicle systems, which is of great significance to solve the limited driving distance challenge [2][3][4][5][6]. EV charging based on inductive wireless power transfer (IWPT) technology has evolved into a new era, and it is considered as robust, efficient (about 85-92%), and also reliable in harsh environments [7].…”

Section: Introductionmentioning

confidence: 99%

Dc Transformer Compensation for Efficiency Improvement of Electric Vehicles Wireless Charging Systems

He¹,

Liu²,

Liu³

et al. 2019

PIER C

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A wireless charging system for electric vehicles has two parts which are located inside and outside the vehicle respectively, and energy is transmitted from the outside part to inside part through a loosely coupled transformer. The energy transmission efficiency is directly related to the power conversion efficiency of the entire wireless charging system. This paper aims to improve the transmission efficiency of the DC transformer of the wireless charging system through studying compensation design method of DC transformer. A dual-tap rectifier is applied at the secondary side of the transformer, and a capacitor is connected in series on the primary side. Two capacitors are connected in series on the secondary side. By quantitative analysis on DC transformer efficiency, the relationship among efficiency, switching frequency, and compensation parameter is obtained. The compensated DC transformer realizes soft switch and further improves transformer efficiency. Finally, simulation and experiment on the wireless charging system with magnetic induction are conducted to verify the improved transformer design. The simulated and experimental results show that the average compensated DC transformer efficiency has been improved by 1.248%. Thus the designed DC transformer can effectively improve the energy transmission efficiency, and reduce voltage stress of the power device.

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“…Ref. [14] presents an estimation method that prevents errors of weak communication with the capacity to control both variables. Alternatively, Ref.…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of a Control Algorithm for a SAE J2954-Compliant Wireless Charger to Guarantee the Operational Electrical Constraints

2018

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Wireless power transfer is foreseen as a suitable technology to provide charge without cables to electric vehicles. This technology is mainly supported by two coupled coils, whose mutual inductance is sensitive to their relative positions. Variations on this coefficient greatly impact the electrical magnitudes of the wireless charger. The aim of this paper is the design and validation of a control algorithm for an Society of Automotive Engineers (SAE) J2954-compliant wireless charger to guarantee some operational and electrical constraints. These constraints are designed to prevent some components from being damaged by excessive voltage or current. This paper also presents the details for the design and implementation of the bidirectional charger topology in which the proposed controller is incorporated. The controller is installed on the primary and on the secondary side, given that wireless communication is necessary with the other side. The input data of the controller helps it decide about the phase shift required to apply in the DC/AC converter. The experimental results demonstrate how the system regulates the output voltage of the DC/AC converter so that some electrical magnitudes do not exceed predefined thresholds. The regulation, which has been tested when coil misalignments occur, is proven to be effective.

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Transmitter-Side Control of Both the CC and CV Modes for the Wireless EV Charging System With the Weak Communication

Cited by 67 publications

References 35 publications

Wireless Power Transfer and Vehicle Theft Detection using Block Chaining

Wireless Power Transfer and Vehicle Theft Detection using Block Chaining

Dc Transformer Compensation for Efficiency Improvement of Electric Vehicles Wireless Charging Systems

Design and Validation of a Control Algorithm for a SAE J2954-Compliant Wireless Charger to Guarantee the Operational Electrical Constraints

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