Abstract: A method and device for determining the linear response of an electrical multi-port component has an “estimation procedure” in which an estimated admittance matrix is determined by applying voltages to the ports of the component and measuring the response of the component. The estimation procedure can e.g. consist of a conventional measurement of the admittance matrix. The method further has a “measurement procedure” in which several voltage patterns are applied to the port. The voltage patterns correspond to the eigenvectors of the estimated admittance matrix. For each applied voltage pattern, the response of the component is measured. This allows to measure the linear response of the component accurately even if the eigenvalues of the admittance matrix differ by several orders of magnitude.

Abstract: A method and device for determining the linear response of an electrical multi-port component has an “estimation procedure” in which an estimated admittance matrix is determined by applying voltages to the ports of the component and measuring the response of the component. The estimation procedure can e.g. consist of a conventional measurement of the admittance matrix. The method further has a “measurement procedure” in which several voltage patterns are applied to the port. The voltage patterns correspond to the eigenvectors of the estimated admittance matrix. For each applied voltage pattern, the response of the component is measured. This allows to measure the linear response of the component accurately even if the .eigenvalues of the admittance matrix differ by several orders of magnitude.

Abstract: A dielectric material housing for accommodating an assembly such as a high voltage, power-electronics assembly. The housing is, for example, in a cuboid shape and has a U-shaped wall section which extends from its top surface via its front surface to its bottom surface, to whose outer surface ground potential can be applied, and to whose inner surface high voltage can be applied. An opening for an electrical connection of the assembly is provided in sections of the housing wall which forms the two side surfaces of the housing.

Abstract: 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.

Abstract: The module (M.sub.1, M.sub.2, . . ) has a first power-electronics assembly (4) which is at high voltage, a second power-electronics assembly (6) which is at a lower potential, and a transformer (5) which couples the two assemblies (4, 6) forming a DC isolation point. The first assembly (4) and electrical connections (26, 27) of the transformer (5) which are connected to it are arranged in a dielectric material housing (10) which is normally designed in a cuboid shape. The dielectric material housing (10) in each case has an electrically conductive layer, which is connected to frame or ground potential, on its top surface (11) and bottom surface (12) as well as on its front face (13) which is closed at the front. An electrical connection of the first power-electronics assembly (4) is passed through each of the two side surfaces (14, 15) of the module.