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On-board and Off-board Charging Systems

D08.9 - Optimized DC/DC Converters for Pulsed Charging of Electric Vehicles Batteries Adopting Active Ripple Energy Concepts

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
Pulsed Charging (PC) has recently gained attention as a promising alternative to conventional charging methods due to its potential benefits for battery lifetime extension. PC requires unconventional features for the battery charger, which have never been addressed in past literature, and represent the novel contribution of this paper. The DC/DC converter of the charger must be in fact designed to manage the required current pulses, where the instantaneous output power is much higher than the average one due to the pulse operations. Correspondingly, its input power should be as constant as possible, to avoid any pulsation to be fed back into the grid and impact regulations. Bulky storage capacitor at the input side of the converter might be adopted to manage the instantaneous power imbalance. An Active Ripple Energy Compensator (AREC) is proposed instead, connected directly at the converter output, i.e., across the battery. The charging architecture is capable of managing a wide output voltage range (200 ~ 920 V) to support various battery technologies, and efficiently implementing PC strategies for battery lifetime extension.