Modified Bridgeless Landsman Converter Fed EV Battery Charger with Improved Power Factor

• Published in: IOP conference series. Materials Science and Engineering Vol. 1177; no. 1; pp. 12003 - 12014
• Main Authors: Dinesh, M., Bhaskar, K.B.
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.08.2021
• Subjects: Batteries; Battery chargers; Converters; Electric vehicle charging; Flyback converter; Harmonics; Isolation transformer; Landsman Converter; Matlab; Power Factor; Simulation
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/1177/1/012003

Abstract This research work focuses on the design and construction of a novel Battery-powered Electric Vehicle (BpEV) and to enhance the power-factor of the input AC. This is accomplished by substituting the prevalent diode converter with a newer, high-quality Landsman converter that is equipped with power-factor tuning. The Flyback-isolated and PFC converters work together to let the EV battery to switch between constant current and constant voltage modes. The recommended PFC converter is regulated using a single entity to attain consistent DC-link voltage and to boost the power-factor close to unity, with simulation carried out using MATLAB. As per the findings, a minimum of 60V DC output is required for charging the battery and suppressing input harmonics. In comparison to the usual architecture, the suggested scheme could provide increased power quality, very little device stress, less ripple at both input and output, and significantly lower harmonics. To validate the simulation results, a prototype is developed and deployed to charge a 48V EV battery with a rating of 100Ah in order to make it compliant with the IEC 61000-3-2 standard, particularly in the case of high voltage spikes at the input. The charger’s performance has been deemed to be good in all conditions based on matlab simulation results.