Abstract
Pure Electric vehicle power supply system includes two types: single power supply system and hybrid power supply system. Control scheme of EV's hybrid power supply system is especially important since it determines system performances and life of every power supply and further impacts on EV's whole performances. As a key technology of electric vehicles (EV), researches of electric power system have been widely drawn attention. Electric vehicle has a wide variety of hybrid power supply structures to respond to different needs, corresponds to different control schemes. The paper carries out research of instantaneous power to complex power structure: Fuel Cell (FC) + Battery (B) + Ultra Capacitor (UC) and propose a power management solution strategy. Finally, a series of experiments have been carried on to prove correctness and reliability of the control scheme. Due to little calculation cost, the scheme has a very strong practical value.
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