Patent ID: 7414331
Filing Date: 2008-08-19
Classification: H02M

Abstract:
1. A power system for supplying power to a load, the power system comprising: a converter system comprising a first converter and a second converter; wherein the converter system is configured for operating in a first mode and a second mode; wherein the first converter and the second converter are configured to be coupled in series during the first mode, and in parallel when operating in the second mode; and a transformer having a primary winding comprising a normal winding and a fault winding, and wherein the normal winding is coupled to the first converter and the second converter during the first mode, and wherein the normal winding and the fault winding are coupled to the first converter and the second converter during the second mode; and a sensing circuit coupled to the transformer and configured to sense an electrical parameter of the transformer; wherein the electrical parameter comprises a voltage across the fault winding of the transformer or a current across a secondary winding of the transformer.