A modular electrical system

An electrical system comprises modules (101, 102) and a frame structure (103) for mechanically supporting the modules successively in an arrival direction of cooling air. Each module comprises a cooling element (106, 107) in heat conductive relation with one or more electrical components. The frame structure mechanically supports the modules so that the cooling elements are substantially in the same attitude and successively in the arrival direction of the cooling air. The cooling elements are shaped so that, when the modules are mechanically supported by the frame structure, the cooling elements conduct cooling air in a direction deviating from the arrival direction of the cooling air. Furthermore, at least a part of a flank (108) of the heat transfer portion of each cooling element is oblique with respect to the arrival direction of the cooling air. Thus, each of the cooling elements receives a fresh portion of the cooling air. 种电气系统，包括：模块(101，102)以及用于在冷却空气的到达方向上相继地机械支撑模块的框架结构(103)。每个模块包括与个或多个电气部件处于热传导关系的冷却