Title :
Bi-directional multi-level converter with DC link switches for charging and discharging battery
Author :
Sang-hyup Han ; Heung-Geun Kim ; Honnyong Cha ; Tae-Won Chun ; Eui-Cheol Nho
Author_Institution :
Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
This paper proposes a 3 kW single-phase bi-directional multi-level converter (MLC) for charging/discharging an electric vehicle. The proposed topology is based on an H-bridge structure with four switches connected to DC-link. Based on a POD (phase opposition disposition) modulation method, a PWM method which requires only one carrier signal is used. The switching sequence to balance the capacitor voltage is also considered. Operating principle of the proposed converter is verified through simulation and experiment.
Keywords :
PWM power convertors; battery powered vehicles; DC link switches; H-bridge structure; POD modulation method; PWM method; battery charging-discharging; capacitor voltage; carrier signal; electric vehicle; phase opposition disposition; power 3 kW; single-phase MLC; single-phase bidirectional multilevel converter; switching sequence; Pulse width modulation; Switches;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0953-0
DOI :
10.1109/VPPC.2012.6422552
