| 摘要 |
<P>PROBLEM TO BE SOLVED: To drive an auxiliary machine even when the power of a stringing is stopped, and to suppress energizing inrush currents of a main transformer from the stringing. Ž<P>SOLUTION: In a railroad vehicle system, the power is supplied from an electrical storage device 17 to secondary windings 12a, 12b via electrical power converters 14a, 14b so that the primary side of the main transformer 6 has the stringing voltage/phase, and the main transformer 6 is inversely excited by using the secondary windings 12a, 12b. By connecting the main transformer 6 in which the voltage of the same phase and the same level as those of the stringing voltage is applied to the primary side to a stringing 1, the energizing inrush currents of the main transformer 6 is suppressed. When the power of the stringing is failed, an auxiliary machine 8 is driven by the power of the electrical storage device 17. The power of the electrical storage device 17 is accumulated by the regenerative energy of driving motors 7a, 7b. A power supply control device 10 changes the power supply of the electrical storage device 17 for the inverse excitation of the main transformer 6 or the power supply for driving the auxiliary machine 8. The power supply control device 10 determines whether the power failure from the stringing is caused by a changing section or by the power failure of a power transformation station. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž |
