energy source model&cr; fuel cell based vehicles&cr; fuel cell modeling&cr; global optimization&cr; hybrid systems&cr; linear optimization&cr; algorithms&cr; curve fitting&cr; energy management&cr; fuel cells&cr; global optimization&cr; hybrid systems&cr; linear programming&cr; optimization&cr; vehicles&cr; cell-based&cr; energy management strategies&cr; energy source&cr; fuel cell model&cr; hydrogen consumption&cr; linear optimization&cr; operational research&cr; optimization algorithms&cr; hybrid vehicles&cr