摘要：目前軌道交通車輛普遍采用的低壓直流電源供電制式為110V和24V，其中110V直流電源集成在車載輔助供電系統(tǒng)中，通過(guò)輔助供電系統(tǒng)將接觸網(wǎng)上高壓電變換為滿足軌道交通車輛運(yùn)營(yíng)需求的110V直流電，而24V直流電需采用額外的電能變換模塊來(lái)獲取。針對(duì)軌道交通車輛24V直流電源的設(shè)計(jì)，介紹了一種基于ZVS軟開關(guān)技術(shù)的節(jié)能控制方案，并進(jìn)行了仿真研究，結(jié)果表明遵循該節(jié)能方案的24V直流電源同樣取得了較好的動(dòng)靜態(tài)特性。 敘詞：節(jié)能 24V直流電源 零電壓開關(guān)ZVS 硬開關(guān) 軟開關(guān) Abstract：So far, low-voltage DC power has been widely used in rail transit vehicles, including 110V and 24V. 110V DC power is integrated in the vehicle auxiliary power supply system, through which it contacts high voltage electricity from the grid, transformed into a satisfied kind of 110V DC power. While 24V DC power is got by additional electric energy. As for the design of 24V DC power of rail transit vehicles, an energy-saving control scheme based on ZVS soft switching technology is introduced, a simulation research also being done. The result shows that such a 24 DC power has a good static and dynamic performance as well. Keyword：Energy-saving, 24V DC Power, Zero voltage switch (ZVS), Hard switching, Soft switching