철도차량 내 직류전원 다중공급 및 부하분담에 대한 수치적 해석

Railway vehicle is composed of a trainset comprised with a number of cars and several auxiliary power supply (hereafter APS), located independently within the trainset, feeds auxiliary power, sharing the loads of the trainset. AC system of auxiliary power is operated in separate system due to phase difference between AC outputs of APS, while, DC system is operated in parallel structure, which has common potential of the reference, and joined into DC bus. Because this kind of parallel structural DC power supply has unbalancing bias incurred by the potential difference between DC outputs, mentioned DC system’s bus could not be simplified only as a node. For actual multiple parallel structural DC power source, in case that their output potentials are mutually different, what kinds of factor affect the load sharing and the numerically predicting and approaching methodology on these factors will be handled in this paper.