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http://hdl.handle.net/10397/91143
Title: | An improved and integrated design of segmented dynamic wireless power transfer for electric vehicles | Authors: | Wang, HS Cheng, KWE |
Issue Date: | Apr-2021 | Source: | Energies, 1 Apr. 2021, v. 14, no. 7, 1975 | Abstract: | This paper describes improvements in a segmented dynamic wireless power transfer (DWPT) system for electric vehicles (EVs), and aims to offer a stable charging method for high-power applications. An integrated design is presented, including the modified switching sequence, the size of segmented transmitters, and parallel inverter technology for high-power applications. Three consecutive transmitters mounted on the rail track are energized according to the position of the pickups. This three-consecutive-transmitter group is comprised of a Q-shaped coil, a DD-shaped coil, and a Q-shaped coil again (QDDQ). QDDQ is used as an elementary energized group to optimize the number of energized transmitters and mitigate the output voltage variation. The entire DWPT system is designed with finite element analysis (FEA) and studied with circuit topologies. Overall, an experimental prototype for dynamic charging is built to verify the overall performance, which shows a great agreement with the theoretical analysis. In this prototype, there are five transmitters and one receiver. All dimensions are 500 mm x 500 mm. The proposed system has been validated to realize 500 V constant output voltage with approximately 85% dc-dc efficiency from the 100 omega to 200 omega load conditions. A 2.5 kW maximum output power occurs at the 100 omega load condition. | Keywords: | Electric vehicles (EVs) Dynamic wireless power transfer (DWPT) Switching sequence Inductive power transfer (IPT) Constant voltage (CV) output |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Energies | EISSN: | 1996-1073 | DOI: | 10.3390/en14071975 | Rights: | © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Wang, H.; Cheng, K.W.E. An Improved and Integrated Design of Segmented Dynamic Wireless Power Transfer for Electric Vehicles. Energies 2021, 14, 1975 is available at https://doi.org/10.3390/en14071975 |
Appears in Collections: | Journal/Magazine Article |
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Wang_Improved_Integrated_design.pdf | 8.22 MB | Adobe PDF | View/Open |
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