Device for supplying a three-phase insular network from a single-phase railway network via a railway converter

摘要

For a device for supplying a three-phase network from a single-phase railway network via a railway converter which consists of a single-phase synchronous machine, an asynchronous machine which is supplied in a duplicated manner, a direct converter and a three-phase shaft generator with an excitation device, and is used for energy exchange between the single-phase network and the three-phase network and, in the event of failure of the three-phase network, is intended to supply said network with electrical power from the railway network, the object exists for the case of failure of the supplying single-phase network of supplying the three-phase insular network which is still serviceable from the railway network until the defect has been remedied. This is achieved in that a converter with a DC output (8) is provided which is supplied from the single-phase network and whose output terminals (+, -) are connected to the rotor winding of the asynchronous machine (1) via a first switch (S91) and a second switch (S92), and which is used to excite this asynchronous machine (1), this asynchronous machine (1) being driven by the single-phase synchronous machine (2). <IMAGE>