Patent ID: 8643234

Claim:
An electrical rotating machine comprising: a rotor having a field winding; a stator having a stator winding, arranged so as to surround the rotor; a bracket fixed to a load side end of the stator; and a heat sink which is disposed inside the bracket, and has mounted on an anti-load side thereof a field circuit unit and power circuit units for controlling the field winding and the stator winding, respectively, and has cooling fins disposed on a load side thereof, wherein the bracket is arranged so as to surround an anti-load side and a lateral side of the field circuit unit and the power circuit units, and a whole of the field circuit unit and the power circuit units is surrounded by the bracket and the heat sink, wherein wiring members for connecting the stator winding and the power circuit units, a slip ring, and a brush holder are arranged between the load side of the heat sink and the stator, wherein cooling fans are arranged at an anti-load side end of the rotor to form cooling air paths for cooling the heat sink, the wiring members, the slip ring, and the brush holder, and wherein the cooling air path for the field circuit unit is created with the wiring members and the brush holder.