The invention discloses a fuel
cell vehicle energy-saving driving method and
system based on convex optimization. The method comprises the steps that
hydrogen consumption of a fuel
cell vehicle running at a
constant speed at different speeds is obtained, and a static
hydrogen consumption diagram is drawn; acquiring traffic information of a driving
route of the fuel
cell vehicle; according to the static
hydrogen consumption diagram and the traffic information, determining an optimal
green light window for driving of the fuel cell vehicle, and determining a search area of an optimal driving path according to the optimal
green light window; taking the minimum total demand power of the fuel cell vehicle as an optimization target, establishing a convex
programming model in combination with the search area, and determining an optimal driving path and an optimal vehicle speed track of the fuel cell vehicle according to the convex
programming model; and determining the output power of each power source of the fuel cell vehicle by adopting an
energy management method based on an alternating direction
multiplier method according to the optimal vehicle speed track. According to the method, vehicle speed planning of multiple
signal lamps can be rapidly completed, and the energy-saving effect is good.