This paper presents a new partial power converter (PPC) for the DC-DC stage of electric vehicle (EV) fast charging stations. The proposed converter handles only a fraction of the total power delivered from the grid to the battery, increasing the overall system efficiency and power density, while potentially reducing the cost of the charger. The proposed topology is based on a switched capacitor between the AC terminals of an H-bridge converter, and does not require high frequency isolation transformers to provide a controllable voltage source between the DC-link and the battery. The proposed concept can be implemented using interleaved power cells, which can improve the power quality, reduce inductor size, and enable scalability for higher power rating chargers. The operating principle, partial operation analysis, control scheme, and simulation results are presented to validate the proposed concept.
|Title of host publication||2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|State||Published - 3 Dec 2018|
|Event||10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States|
Duration: 23 Sep 2018 → 27 Sep 2018
|Name||2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Conference||10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Period||23/09/18 → 27/09/18|
Bibliographical noteFunding Information:
VII. ACKNOWLEDGMENTS The authors acknowledge the support provided by FONDE-CYT 11170774, by AC3E (CONICYT/Basal/FB0008), by SERC Chile (CONICYT/FONDAP/15110019). and by CON-ICYT/REDES/170213.
© 2018 IEEE.
- Electric Vehicles
- Fast Charging
- Partial Power Processing