This article deals with the design and practical evaluation of a wireless charging system for e-scooters. As wireless charging undertakes popularity, initially, the state of the art within application area is realized. Consequently, due to variability of the configuration of the whole system, several alternatives are discussed considering the utilization of the power converter stages. High attention is given to the construction of the coupling elements and calculation of the main circuit components of the considered power converters. The experimental part of the paper is supported by the measurements of key properties, i.e., the operational characteristics of the whole converter system together with coupling coils. Here, the efficiency characteristics, together with the output power characteristics in dependency on the mutual distance between the transmitting and receiving coils, are evaluated. Received results represent an adequate design approach and practical use of the proposed Wireless Power Transfer (WPT) e-scooter charging configuration.
Current tendencies in the field of charging systems are continuously attracted by the phenomenon of the wireless power charging. It is worth to say that within past decade, significant attention was spent on the research and development of various configurations of the transmitters, receivers, compensation networks and alternative solutions for the power circuits on the primary and/or secondary side of the system. In this paper the proposal for the performance optimization of the wireless power transfer (WPT) system is given. The solution is based on the alternative configuration of the secondary side rectifier. It is represented by diode rectifier with current doubler. Comparing to the bridge rectifier, two diodes are replaced by the inductors. Initially, a system analysis was performed to investigate electrical behavior and to find the most optimal conditions referred to terms of efficiency performance at nominal power. Due to this requirement the rectifier inductors must be designed according to meet this condition. The experimental verification was realized as well, while the proposed solution was compared to other common alternatives of the secondary side rectification. The load sensitivity analysis in terms of efficiency performance was realized as well, to observe system behavior for wide operation range. From the results is seen, that proposed alternative of the secondary side rectification of WPT system gives promising results in terms of high operating efficiency.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.