MULTILEVEL CONVERTER AND METHOD FOR COMPENSATING ACTIVE AND REACTIVE POWER IN A HIGH VOLTAGE NETWORK

摘要

A multilevel converter (10-13, 20-23, 30-33) having chain link topology of cells in serial connection (10-13, 20-23, 30-33), wherein a plurality of the cells (10-12, 20-22, 30-32) comprises a capacitor unit (5) and is adapted for providing reactive power, the multilevel converter is characterised in that it also comprises a least one converter cell in the chain per phase comprising a battery unit for providing active power. A method for compensating active and reactive power using a multilevel converter and an arrangement including three multilevel converters are also provided.