Title :
Power Distribution Strategy of Fuel Cell Vehicle System with Hybrid Energy Storage Elements Using Triple Half Bridge (THB) Bidirectional DC-DC converter
Author :
Li, Hui ; Liu, Danwei
Author_Institution :
Florida State Univ., Tallahassee
Abstract :
A triple-half-bridge (THB) multiple-input bidirectional dc-dc converter was proposed recently to interface battery and ultracapacitor. This paper presents a power distribution control to coordinate the power partitioning among fuel cell, battery, and ultracapacitor when this THB converter is applied to the fuel cell vehicle system. A particular goal is to obtain both a peaking load control and state of charge control of battery and ultracapacitor. In order to analyze and verify the control strategy in the fuel cell system, some essential subsystem models were developed including small signal model of THB bidirectional dc-dc converter, simplified dynamic model of fuel cell, battery and ultracapacitor. The simulation results confirmed that the load leveling and state of charge control are effectively implemented. A 6 kW prototype was built in the laboratory and preliminary experimental results were obtained.
Keywords :
DC-DC power convertors; bridge circuits; fuel cell vehicles; power distribution control; supercapacitors; fuel cell vehicles; hybrid energy storage; load leveling; power 6 kW; power distribution control; power partitioning; triple half bridge bidirectional DC-DC converter; ultracapacitors; Batteries; Bridges; Control systems; DC-DC power converters; Energy storage; Fuel cell vehicles; Fuel cells; Load flow control; Power distribution; Supercapacitors;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.101
