| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric rolling stock driver which suppresses vibration propagated to an inverter element by attenuating three-dimensional vibration generated during run of a train.SOLUTION: In the electric rolling stock driver in which an inverter 32 and a motor 11 are integrated, an inner box 26 for accommodating a power conversion module constituting an inverter is arranged within an outer box 29. High load resistance and durability are realized by providing a vibrationproof member 28 made of a metallic wire rope between the inner box 26 and the outer box 29. It is possible to attenuate three-dimensional vibration by arranging the vibrationproof members between facing planes, such as rear faces 29a, bottom faces 29b and flanks 29c. As a result, it is possible to lower the product fatigue of a semiconductor element 22 or a terminal part of a capacitor 21 by extending its maintenance cycle for replacement of the vibrationproof member 28, etc. |
