Patent ID: 8338979
Filing Date: 2012-12-25
Classification: F03D,F05B,H02K,Y02B,Y02E

Abstract:
1. A direct current (DC) generator comprising: an annular armature connectable to rotate with a rotating component of a wind turbine; a stationary annular field winding coaxial to the armature and separated by a gap from the armature, wherein the field winding includes superconducting coil magnets; a non-rotating support for the field winding; a fixed support coupling the non-rotating support for the field winding to a base fixed to an upper region of the wind turbine, wherein the fixed support is connected at one end region to the non-rotating support and is connected at an opposite end region to the base, and wherein the fixed support suspends the field winding over the base; and a commutator assembly configured to transfer DC current generated by the rotating armature to a power conversion system, wherein the commutator assembly comprises: