To provide a power converter for a railway car capable of reducing the trouble of a manufacturing process and maintenance caused by applying a waterproof structure while securing heat radiation performance.SOLUTION: In a power converter 30 (power converter for a railway car), a cooling unit 32 includes a first cooling portion 32a having a first heat dissipating fin portion 51, closing an opening portion 31c in a state of ensuring watertightness, and arranged so as to be in contact with a semiconductor element 18 via the opening portion 31c and a second cooling portion 32b having a second heat dissipating fin portion 52 and provided so as to face an outer surface 31b on the side where the opening portion 31c of a semiconductor device 21 is not provided adjacent to the side where the first cooling portion 32a is provided.SELECTED DRAWING: Figure 4
【課題】放熱性能を確保しながら、防水構造を施すことに起因した、製造工程およびメンテナンス時の手間を減らすことが可能な鉄道車両用電力変換装置を提供する。【解決手段】この電力変換装置30(鉄道車両用電力変換装置)では、冷却部32を、第1放熱フィン部51を有し、開口部31cを水密性を確保した状態で塞ぐとともに、開口部31cを介して半導体素子18が接触するように配置された第1冷却部32aと、第2放熱フィン部52を有し、第1冷却部32aが設けられた側と隣接する半導体装置21の開口部31cが設けられていない側の外表面31bに対向するように設けられた第2冷却部32bとを含むように構成する。【選択図】図4
POWER CONVERTER FOR RAILWAY CAR
鉄道車両用電力変換装置
2019-02-21
Patent
Electronic Resource
Japanese
IPC: | H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B61C Lokomotiven , LOCOMOTIVES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H05K PRINTED CIRCUITS , Gedruckte Schaltungen |