POWER CONVERTER AND RAILWAY VEHICLE

• Main Authors: FUJIWARA NOBUTO, TSUKINARI YUKI
• Format: Patent
• Language: English; Japanese
• Published: 21.05.2020
• Subjects: LOCOMOTIVES; MOTOR RAILCARS; PERFORMING OPERATIONS; RAILWAYS; TRANSPORTING

To provide a power converter capable of securing desired cooling performance and strength while supplying traveling wind to a circulation path between a plurality of fins effectively.SOLUTION: The power converter includes a semiconductor element, a heat receiving block, a plurality of fins, and a wind receiving member. The semiconductor element can output power for driving a vehicle. The heat receiving block is mounted with the semiconductor element. The plurality of fins are provided on the heat receiving block and arranged with a predetermined gap in a direction orthogonal to an assumed traveling direction of the vehicle. The wind receiving member includes a pair of base parts respectively joined to a lower surface of both ends of the plurality of fins in the assumed traveling direction and a pair of flange parts extending below the plurality of fins from each of the pair of base parts to receive the traveling wind of the vehicle.SELECTED DRAWING: Figure 2 【課題】走行風を効果的に複数のフィン間の流通路に供給し、所望の冷却性能及び強度を確保できる電力変換装置を提供すること。【解決手段】電力変換装置は、半導体素子と、受熱ブロックと、複数のフィンと、受風部材と、を備える。半導体素子は、車両を駆動する電力を出力可能である。受熱ブロックは、前記半導体素子が搭載される。複数のフィンは、前記受熱ブロックに設けられ、前記車両の走行想定方向に直交する方向に所定の隙間を有して配置される。受風部材は、前記複数のフィンの前記走行想定方向で両端の下面にそれぞれ接合された一対の基部、及び、前記一対の基部のそれぞれから前記複数のフィンの下方に延びる、前記車両の走行風を受ける一対の鍔部を含む。【選択図】 図２