Current rectification circuit for voltage source inverters with separate energy stores replaces phase blocks with energy storing capacitors

摘要

A current rectification circuit comprising single- or multi-phase voltage source inverters has switchable energy stores comprising unipolar capacitors which can take up energy during overvoltage conditions and prevent short circuits and other uncontrolled energy emission. A current rectification circuit comprising single- or multi-phase voltage source converters has phase blocks replaced by connection-compatible tripolar units comprising switchable internal energy stores in the form of unipolar capacitors so that energy is taken up during overvoltage conditions and uncontrolled energy emissions, especially short circuits, are prevented and a given capacitance between the P and N terminals and the energy content of the substitute units can be established. An Independent claim is also included for a process for controlling the circuit above.