Implementation of Burp Pulse Charging in Inductive Power Transfer Systems with LCC-Series Compensating Topology for Electric Vehicle Charger Application

In recent years, inductive Wireless Power Transfer (WPT) chargers have become popular because of their advantages such as high safety, user convenience and easier access to onboard vehicle charger. However, in the conventional wireless chargers there are still contained problems such as long charging time and reduced lithium-ion battery life cycle. In this paper with implementation of Burp Pulse Charging method in the wireless power transfer system, improvement in battery charging efficiency, charging time and battery state of health are achieved. These benefits are due to the presence of rest periods in the Burp charge profile in comparison to traditional Constant Current (CC) and Constant Voltage (CV) methods. Also with the proposed soft start and stop algorithms, transient response of resonant converter in Burp pulse charging improves. The simulation results confirm the possibility of implementing Burp pulse charging in WPT system in the absence of a wireless communication link.