Design and Implementation of a Converter Circuit for Multiple Output EV Battery Charger

The property of low carbon emissions and high energy efficiency has made the Electric vehicles (EVs) recently popular in the market. However, the limited availability of charging infrastructure remains a significant barrier to their widespread adoption. To address this issue, it is crucial to develop efficient and affordable EV chargers that can accommodate a large range of battery voltages. The idea proposed here implements a converter circuit for an EV battery charger. One promising solution is a multi-voltage charger circuit that employs a non-inverting DC-DC converter known as the SEPIC (Single-Ended Primary Inductor converter) converter. This converter can either step up or step down the input voltage to provide the required output voltage, enabling the charging of batteries with different voltages, including 24V, 36V, and 48V. A key advantage of the multi-voltage charger circuit is its versatility in charging batteries with different voltages. However, the design of a multi-voltage charger circuit must consider several factors, including the voltage range, maximum charging current, and control circuitry required for proper operation. To ensure the safety and reliability of the charging process, appropriate control measures, such as voltage regulation and current limiting, must be implemented. Overall, a multi-voltage charger circuit utilizing a SEPIC converter offers a promising solution to improve the accessibility and convenience of EV charging infrastructure, potentially accelerating the adoption of EVs and reducing carbon emissions.