| 摘要 |
<p>A circuit arrangement (3) of modular design, in particular for propulsion of a railroad vehicle, having at least two series-connected, power-electronic modules (M1, M2, . . . Mn), which each have a DC isolation point. A first (M1) of these modules is connected to high voltage and a second (M1) is connected to frame or ground potential. The first module (M1) has a first power-electronics assembly (4) which is at high voltage and is connected to a power-electronics assembly (4) (which is at a lower potential) of the second or of a third module (M2). The power-electronics assemblies (4) of each module are arranged in one of several equivalent and dielectric material housings (10), each of which is normally designed in a cuboid shape. The housings (10) are arranged parallel and at a short distance away from one another with regard to their height on a plate (9) which is at frame or ground potential. On its top surface (11), bottom surface (12) and front face (13), each housing (12) has an electrically conductive layer which is connected to frame or ground potential. An electrical connection for a contact (16, 17) of a contact arrangement which produces the series circuit of these two modules (M1, M2) is passed through the mutually facing side surfaces (14, 15) of the dielectric material housings (10) of in each case two of the modules (M1, M2). The devices (4) and the contact arrangement are thus shielded in a dielectric beneficial manner.</p> |
