Energy strategies device selection

Downstream of the converter, a DC bus connects this device in electric parallel with the battery pack to supply the electric drive. Voltage and current sensors are installed on batteries and upstream-downstream the DC-DC converter, as shown in Fig. 6.2, to monitor the electric energy flows between the different components of the propulsion system. The DC-DC converter allows the stack output power to be varied according to the selected control strategy. Furthermore, some security switches are adopted, in order to instantaneously disconnect the electric load from battery pack and/or stack. An I/O laboratory board is used for data acquisition and setting of the electrical parameter affecting the DC-DC converter behavior. 

We recently studied if it is possible to device a selection strategy based on the relative stability of the intermediate of a reaction [24]. It is known that in the palladium-catalyzed allylic substitution, the rate-determining step is the attack of the nucleophile on the n-allyl-palladium species. The transition state of this step is believed to be late when carbon nucleophiles are used. In this scenario, an inverse correlation of the energy of the intermediate and the reaction rate is expected, as the transition state is more product-like (see Figure 4.10). Based on this hypothesis, the selection of catalyst among a dynamic mixture of palladium complexes was studied. 

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