Abstract:
Exemplary embodiments are directed to a converter system having a phase voltage source, n partial converter systems, wherein n≧1 and, when n=1, the partial converter system is connected to the phase voltage source at a connection point and, when n>1, the partial converter systems are connected to the phase voltage source at the connection point. Furthermore, a power switch is connected in series between the phase voltage source and the connection point. An interruption element is connected in series between the phase voltage source, the power switch, and the connection point to rapidly switch off a fault current via a partial converter system. Furthermore, a power electronic system including m converter systems is specified, wherein m>1.
Abstract:
An exemplary medium voltage system includes a multilevel converter connected to a grid connection. The multilevel converter is configured for converting a first multiphase current provided at the grid connection into a second current. The system includes a common mode filter, which, for each phase of the first current, includes a phase filter connected to the respective phase. Each phase filter is connected to a common filter star point which is connected to ground, includes an inductance and a capacitance connected in series, and includes a resistance connected in series with the capacitance such that the inductance and the resistor are connected in parallel. The common mode filter includes an impedance between the common filter star point and the ground.