Patent ID: 9209679
Filing Date: 2015-12-08
Classification: H02M,Y02B

Abstract:
1. A hybrid converter apparatus configured for coupling to an AC power system on an AC side and to a DC power system on a DC side, said hybrid converter apparatus comprising: a line-commutating current source converter referred to as a first converter and comprising a plurality of line-commutated bidirectional voltage-blocking switches coupled between first AC-side and DC-side connections and configured for transferring electrical power between the AC and DC power systems, based on converting AC voltage to DC voltage or vice versa; a self-commutating current source converter, referred to as a second converter and comprising a plurality of self-commutated bidirectional voltage-blocking switches coupled at least to the AC power system through second AC-side connections; and a control circuit configured to control commutation of the second converter to compensate for at least one of reactive power consumption and harmonics generation by the first converter on the AC side.