Abstract:
A novel single-stage 3-level asymmetric dual active bridge series resonant converter (3LADABSRC) is proposed to achieve high efficiency, high power density, and high performance for EV battery charging applications. Hardware design and validation are performed on an 18 kW module which can be used as a building block for a higher-power extreme-fast charger. Hardware results show that the proposed converter maintains high efficiency over a wide range of input and output voltage variations. Current sharing between multiple parallel devices on the secondary active bridge is solved by using multiple windings on the same magnetic core. The proposed modulation strategy achieves complete zero voltage turn-on for rated operating conditions and partial zero voltage switching at other operating points mentioned in Table II. An efficiency of 96.3% is achieved for maximum output power of 18 kW, while a peak efficiency of 97.1% is achieved for ac-dc operation.
See publication:
https://ieeexplore.ieee.org/abstract/document/10131542This publication pertains to:
Charging StationsPublication Authors:
- Shubhangi Gurudiwan
- Rees Hatch
- Mahmoud Mansour
- Hongjie Wang
- Regan Zane