Energy Analysis Between Wire-Connected and Wireless Battery Charger Systems for Electric Bike

• Published in: IEACon 2023 - 2023 IEEE Industrial Electronics and Applications Conference
• Main Author: Baharom R.; Muhamad S.M.; Wan Abdul Munim W.N.; Radzi M.A.M.; Hashim N.; Hakimi Wan Bunyamin W.M.; Zolkiffly M.Z.; Ahmad A.S.; Shaffee S.N.A.
• Format: Conference paper
• Language: English
• Published: Institute of Electrical and Electronics Engineers Inc. 2023
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182922766&doi=10.1109%2fIEACon57683.2023.10370579&partnerID=40&md5=35d880fbd73e30f3cc77f5c0d393ded5

The wireless power transfer definitely holds promise for the future of energy delivery. This technology, if developed, could drastically reduce energy costs, enabling energy to be delivered faster and more efficiently than ever before. With wireless power transfer, the energy can be sent to any location, with no wires or cables needed. Furthermore, it eliminates the need for bulky wires and expensive installations, making it an attractive option for many applications. Nevertheless, there are a few main issues with wireless power transfer technology. The first is that it is not as efficient as traditional power transfer methods, such as wires. The second is that it is difficult to transfer power over large distances. The third is that it is not always possible to charge devices wirelessly. These facts limits the practical implementation and negatively affected the interest in wireless power transfer technology. Therefore, this paper presents an energy analysis between wire-connected and wireless battery charger systems for electric bike (E-Bike). To perform energy analysis, two main equipments are used; a YOKOGAWA WT333E Digital Power Meter and a Fluke 435 Series II Power Quality and Energy Analyzer. The comparison of performance between wire-connected and wireless charging systems is based on the E- Bike battery charging period from 41.28 V (0%) to 54.95 V (100%) and the total energy consumption. The wire-connected battery charger used battery charging systems that come with the e-bike provided by the manufacturer (Model: CHR-48V/LI, STonBike). Meanwhile, the designed wireless battery charger is based on the output characteristics (voltage and current) of the wire-connected battery charger, focusing on improving the input power factor to meet the requirement of the MS IEC 60038 standard. It features low power losses resulting in high power density. The distorted supply current waveform due to the non-linear load is compensated through a proper switching algorithm of Active Power Filter (APF). It possesses low harmonic contents with a low Total Harmonics Distortion (THD) level, thus, improving the high-power factor. The results of the input voltage and current profiles are presented including the energy profile of both wire-connected and wireless battery charger systems to verify the energy analysis. This paper shows that with the right control and algorithm, wireless power transmission can function well and be a viable alternative to wired power supplies, particularly for rotating or mobile applications. © 2023 IEEE.