Improved Power Quality On-Board Charging Solution for Light Electric Vehicles
Bhim Singh, Jitendra Gupta
Abstract
In this work, an onboard charger employing an interleaved canonical switching cell (CSC) active power factor correction (PFC) converter and an isolated Cuk converter, is presented for light electric vehicles (LEVs) charging application. The presented configuration ensures enhanced power quality charging of vehicles having wide battery voltage from 28 V to 72 V. In the PFC stage, the reduced size of the magnetic components and minimum switching losses ensure an efficient, cost effective, and compact charging solution. Additionally, the cost and complexities associated with the control implementation are minimized by considering fewer control variables and associated sensing circuits. At the back end, the isolated Cuk converter ensures a ripple free charging current and wide output voltage capability, without employing complex control. The overall performance is analyzed for the wide battery voltage range under various operating conditions. The presented charger configuration establishes an enhanced charging method for LEVs from a power quality perspective.