Title :
Design of a 2.5kW 400V→M2V high-efficiency DC/DC converter using a novel synchronous rectification control for electric vehicles
Author :
Chen Duan ; Wei Guo ; Bai, Kevin Hua ; Zhong Nie ; Mengyang Zhang ; Householder, Fred ; Krozek, Dennis
Author_Institution :
Dept. of Electr. & Comput. Eng., Kettering Univ., Flint, MI, USA
Abstract :
This paper proposes the design and development of a 2.5kW 400V→12V high-efficiency DC/DC converter with a wide input voltage range (450V~220VDC) and output voltage range (16V~6VDC). The designed DC/DC converter will be used in the electric vehicle as an electric alternator. An LLC half bridge topology is adopted as the primary side of the isolated DC/DC converter. For the secondary side, a novel rectification control strategy is developed to turn on/off the rectifier MOSFETs by actively tracking the exact triggering moments. A 2.5kW prototype to charge the on-board 12V battery was built to experimentally verify the theoretical analysis. The overall system efficiency was ~92% and the maximum is 93.2%.
Keywords :
DC-DC power convertors; alternators; battery powered vehicles; power MOSFET; rectification; LLC half bridge topology; electric alternator; electric vehicles; high-efficiency DC-DC converter design; on-board battery; power 2.5 kW; rectifier MOSFET; synchronous rectification control strategy; triggering moment tracking; voltage 400 V to 12 V; Batteries; DC-DC power converters; Delay effects; Delays; MOSFET; Pulse width modulation; Rectifiers;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6646824
