02461nam a2200229Ia 4500003001000000005001700010040000900027245005800036490005400094520173400148650001001882650001201892650001401904650002401918700002001942700001701962700001901979700002301998700001302021856015602034008004102190MX-MdCICY20260521091227.0  cCICY10aDesign of control systems for portable PEM fuel cells0 vJournal of Power Sources, 169(1), p.194-197, 20073 aThe current evolution in the design of fuel cell systems, together with the considerable development of integrated control techniques in microprocessor systems allows the development of portable fuel cell applications in which optimized control of the fuel cells performance is possible. Control, in the strict sense, implies a thorough knowledge of both the static and dynamic behaviour of the system comprising the stack, manifold and the compressor that enables oxygen supply. The objective of this control, far from being simply to maintain the stack free from oxygen and hydrogen shortages, is to achieve the necessary values of these gases, minimizing compressor consumption, which is the cause of the greatest inefficiency of fuel cells. This objective is essential when fuel cell systems are involved in situations where the net power of the stack is reduced and any unnecessary consumption lowers the total power available to the user. The design of an efficient control system requires the following steps: (1)modeling of the stack, compressor and other pneumatic elements involved in the system. (2)Calculation of the control equations and simulation of the entire system (including control). (3)Emulation of the stack and other pneumatic elements and simulation utilizing the designed control system. (4)Physical realization of the control system and testing within the fuel cell system. The design of a control system for fuel cell systems is introduced to manage PEMFC stacks. The control system will guarantee the correct performance of the stack around its optimal operation poin, in which the net power is maximized. This means that both, the air flow and the stack temperature are controlled to a correct value.14aPEMFC14aCONTROL14aFUEL CELL14aOXYGEN EXCESS RATIO12aVega-Leal, A.P.12aPalomo, F.R.12aBarragán, F.12aCovadonga García12aBrey, J.40uhttps://drive.google.com/file/d/17L4l2G8IES7cssLWas7uWoy3xdfdp5h_/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d