LIGHT ELECTRIC-VEHICLES based IMPROVED POWER QUALITY TRANSFERMERLESS SINGLE-STAGE BRIDGELESS CONVERTER BASED CHARGER

Abstract

This article presents a bridgeless switched inductor Cuk (BSIC) converter based charger that offers light electric vehicles (LEVs) an affordable, small-sized charging option with improved supply-side performance. In order to charge the batteries of LEVs like e-rickshaws, e-bikes, and e-cycles at low voltages (24–72 V), the chargers of these vehicles often include an extra converter. The charger's single-stage step-down dc voltage gain is enhanced by the switched inductor arrangement, which also increases the charger's dependability at these low voltages. It is interesting to note that running the charger in discontinuous current mode state significantly lowers both the cost of the sensors and the size of the magnetic components. Furthermore, the charger's cost, size, and efficiency are all further enhanced by the high-gain transformerless design. A laboratory prototype charger with an 850 W rated and nominal supply voltage parameters of 220 V and 50 Hz is used to evaluate the charger's efficacy. Under various operating settings, the charger's steady state and dynamic behaviours are examined. In order to guarantee the charger starts softly, the charger's behaviours during the startup of the charging process are also examined. To demonstrate the benefits of the proposed charger arrangement over the current one, a brief comparison between it and existing LEV chargers is provided.