Power converter circuit arrangement for generators with dynamically variable power output

摘要

A power converter circuit for wind power devices which feed into a high-voltage grid consisting of a power converter circuit arrangement to transform the variable frequency and variable voltage alternating current generated in the AC voltage generator into DC. The DC is chopped to again produce AC but with a fixed frequency and voltage. The power converter consists of a cascaded serial arrangement of several power converter cells. The power converter cells are made dynamically active or inactive by the master control unit, depending on the power being generated by the AC voltage generator. Each phase of each power converter cell supplies a primary winding of an output transformer.