A generator air gap baffle train assembly includes linearly aligned baffle segments, linearly aligned wedge blocks, and a tensioning rod. Each baffle segment includes a radially outer portion having an outer surface to interface with the axial slot and a side surface angled with respect to the outer surface and an axially aligned first thru bore and a radially inner portion which projects into an air gap. A pair of wedge blocks are positioned on opposing sides of the radially outer portion, each wedge block including a side surface that interfaces with the side surface of the radially outer portion so that the interfacing surfaces are in abutting contact and an outer surface that interfaces with the axial slot and a second thru bore axially aligned with the first thru bore of each baffle segment. The tensioning rod is enclosed by a non-conducting hollow tube spanning between adjacent baffle segments.

An electric machine includes a rotor surrounded by a stator. An external jacket surrounds the stator and extends between front and rear end parts, thereby delimiting an inner region which accommodates the rotor, and an outer region radially surrounding the inner region. The inner and outer regions communicate with one another via recesses to enable air to flow out of the inner region and into the outer region and from there to flow back into the inner region. Front and rear closing elements are attached to the front and rear end parts on their side facing away from the external jacket, thereby enclosing a front cavity and a rear cavity. Axial tubes are fastened in the front and rear end parts such that the axial tubes extend from the front end part across the outer region to the rear end part and open in the front and rear cavities.

An electric machine includes a rotor surrounded by a stator. An external jacket surrounds the stator and extends between front and rear end parts, thereby delimiting an inner region which accommodates the rotor, and an outer region radially surrounding the inner region. The inner and outer regions communicate with one another via recesses to enable air to flow out of the inner region and into the outer region and from there to flow back into the inner region. Front and rear closing elements are attached to the front and rear end parts on their side facing away from the external jacket, thereby enclosing a front cavity and a rear cavity. Axial tubes are fastened in the front and rear end parts such that the axial tubes extend from the front end part across the outer region to the rear end part and open in the front and rear cavities.

There are provided: a rotor including a rotating shaft and a rotor core; a stator including a stator core and stator windings; bearings; a casing fixed to the stator core and connected to the bearings, which houses the rotor and the stator; and an electrostatic shield connected to the casing. The electrostatic shield has a plurality of opening holes by which a space in which the stator is disposed is communicated with a space in which the rotor is disposed.

A wind turbine includes a dynamoelectric machine including a liquid-cooled stator and a rotor interacting with one another. The stator includes a magnetically conductive body and a winding system which is embedded in slots of the magnetically conductive body and which includes a main insulation arranged between a conductor of the winding system and a slot wall and including at least one recess provided in a cooling-channel impression of the main insulation to form at least one axial cooling channel extending between the main insulation and the slot wall, so that the at least one cooling channel borders the slot wall without insulation in direct contact with the slot wall. The winding system includes end windings which are also liquid-cooled. A can separates the stator and the rotor from one another and enables different cooling media for the stator and the rotor.

A generator (10) comprising a series of spaced annular stators (15) sandwiched between a series of rotors (11), the rotors (11) each being separated by annular collars (16), the annular collars (16) defining a central cavity; at least one cooling gas source for supplying gas to the central cavity; vents (23,24,25,26,27,28,31,32,33,34,35) through the annular collars (16) for providing a means of egress for the cooling gas (20) from the central cavity radially outwards over the rotors (11) and the annular stators (15).

A generator (10) comprising a series of spaced annular stators (15) sandwiched between a series of rotors (11), the rotors (11) each being separated by annular collars (16), the annular collars (16) defining a central cavity; at least one cooling gas source for supplying gas to the central cavity; vents (23,24,25,26,27,28,31,32,33,34,35) through the annular collars (16) for providing a means of egress for the cooling gas (20) from the central cavity radially outwards over the rotors (11) and the annular stators (15).

There is provided an apparatus comprising a torque motor comprising a spring, armature, flapper assembly (“SAFA”), a body, wherein the spring, armature, flapper assembly is mounted onto the body, and a cap enclosing the spring, armature, flapper assembly. One or more cooling passages are provided within the body and are configured to receive cooling air and direct the cooling air onto the spring, armature, flapper assembly of the torque motor.

A generator air gap baffle train assembly includes linearly aligned baffle segments, linearly aligned wedge blocks, and a tensioning rod. Each baffle segment includes a radially outer portion having an outer surface to interface with the axial slot and a side surface angled with respect to the outer surface and an axially aligned first thru bore and a radially inner portion which projects into an air gap. A pair of wedge blocks are positioned on opposing sides of the radially outer portion, each wedge block including a side surface that interfaces with the side surface of the radially outer portion so that the interfacing surfaces are in abutting contact and an outer surface that interfaces with the axial slot and a second thru bore axially aligned with the first thru bore of each baffle segment. The tensioning rod is enclosed by a non-conducting hollow tube spanning between adjacent baffle segments.

A generator air gap baffle train assembly includes linearly aligned baffle segments, linearly aligned wedge blocks, and a tensioning rod. Each baffle segment includes a radially outer portion having an outer surface to interface with the axial slot and a side surface angled with respect to the outer surface and an axially aligned first thru bore and a radially inner portion which projects into an air gap. A pair of wedge blocks are positioned on opposing sides of the radially outer portion, each wedge block including a side surface that interfaces with the side surface of the radially outer portion so that the interfacing surfaces are in abutting contact and an outer surface that interfaces with the axial slot and a second thru bore axially aligned with the first thru bore of each baffle segment. The tensioning rod is enclosed by a non-conducting hollow tube spanning between adjacent baffle segments.