Vehicle-mounted composite power supply reliability evaluation method based on Markov chain and fault tree
A composite power supply and fault tree technology, applied in resources, electrical digital data processing, instruments, etc., can solve the problem that the reliability of vehicle composite power supply is difficult to accurately evaluate, and achieve the effect of avoiding trial and error
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] figure 1 It is a schematic diagram of the structure of four different topological structures HESS (hybrid power supply). figure 1 (a) is a cascade structure HESS with supercapacitors in the middle. Compared with the multi-input power converter structure HESS, since the first bidirectional DC / DC power converter 3 is located between the battery 1 and the supercapacitor 2 in this structure, the state of charge (State of charge, SOC) can be controlled individually. In addition, the voltage variation of the supercapacitor 2 depends on the variation of its state of charge, and the second bidirectional DC / DC power converter 4 needs to regulate and stabilize the DC bus voltage. figure 1 (b) is a cascade structure HESS with the battery in the middle. The supercapacitor 2 is connected to the storage battery 1 through the first bidirectional DC / DC power...
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