For example, fuel cells called Proton Exchange Membrane Fuel Cells (PEMFC) are used in automotive applications because they provide fast start-up, high power density, low operating temperature, and silent operation, ,,. Among other renewable energy sources, the fuel cell is one of the attractive options because it offers higher efficiency than other energy alternatives,. To resolve these problems, renewable energy sources are being heavily investigated by energy researchers. The growing number of vehicles in use around the world is causing a number of problems, including global warming, abnormal weather, and the rapid depletion of fossil fuels, ,. As a consequence, the trajectory of system pressure line 1 was found to be more effective for energy saving. The control adjustment also needs to optimize the parasitic power. When the ram air compensation is considered, the cooling system operating trajectory and parasitic power can be accurately predicted. Three driving conditions considering ram air compensation were investigated to evaluate the cooling system operating trajectory. Three driving cycles were applied to investigate the responses of the cooling system under driving conditions. A dynamic vehicle model was integrated with the fuel cell system model. In this study, cooling system responses considering ram air compensation were investigated to evaluate the control strategy, and control gain was addressed to optimize the control strategy. The ram air that enters the vehicle frontal area is also critically important while the vehicle is operating. In general, the cooling system is composed of a radiator, a reservoir, a water pump, a bypass valve, and a radiator fan. The cooling system is one of the major factors used to ensure the performance of the fuel cell vehicle system.
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