A study on the control of output current to respond to the load changes of the wireless power transfer

Author

Jun-Ho Lee ; Byung-Song Lee ; Seung-Hwan Lee ; Kyung-Pyo Yi

Author_Institution

Korea Railroad Res. Inst., Uiwang, South Korea

fYear

2015

fDate

14-17 June 2015

Firstpage

1

Lastpage

4

Abstract

In this paper, the control of the inverter output current for the wireless power transfer system that responds to the load changes is presented. The wireless power transfer system is composed of the high frequency inverter for power conversion, power cable on the ground, and on-board pick-up to produce the power by electro motive force that reacts to the magnetic field of the power cable on the ground. It is necessary that high frequency should be employed for the inverter to achieve high transfer efficiency between power cable on the ground and on-board pick-up. Also, the inverter should control its output current actively in order to respond to the load changes of the system. It is possible to implement the active control of the output current by sensing the input current of the inverter that changes according to the load changes of the system.

Keywords

electric current control; inductive power transmission; invertors; magnetic fields; power cables; electro motive force; high frequency inverter; inverter output current control; power cable magnetic field; power conversion; wireless power transfer; Charging stations; Fluctuations; Inverters; Monitoring; Sensors; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Conference and Expo (ITEC), 2015 IEEE

Conference_Location

Dearborn, MI

Type

conf

DOI

10.1109/ITEC.2015.7165753

Filename

7165753