A brush holder system includes a stationary support member having at least one groove, and a fork electrical connector. A brush retainment member is configured to be releasably affixed to the stationary support member. The brush retainment member has at least one rail configured to slide along the at least one groove. The brush retainment member has a knife electrical connector configured to mate with the fork electrical connector. A radio frequency identification device (RFID) tag is mounted on the brush retainment member, and the RFID tag is configured to monitor brush wear and communicate brush wear status to a monitoring system. The stationary support member is configured for electrical connection to a collector mount and the brush retainment member is configured to retain at least one brush.

A brush holder system includes a stationary support member having at least one groove, and a fork electrical connector. A brush retainment member is configured to be releasably affixed to the stationary support member. The brush retainment member has at least one rail configured to slide along the at least one groove. The brush retainment member has a knife electrical connector configured to mate with the fork electrical connector. A radio frequency identification device (RFID) tag is mounted on the brush retainment member, and the RFID tag is configured to monitor brush wear and communicate brush wear status to a monitoring system. The stationary support member is configured for electrical connection to a collector mount and the brush retainment member is configured to retain at least one brush.

An example brush holder assembly for positioning a conductive carbon brush in contact with a conductive surface of an electrical device is disclosed. In some aspects, the example brush holder assembly includes a brush holder including a backbone extending therefrom and a removable handle. Further, the removeable handle includes a frame releasably engaged with the backbone and a grip secured to the frame. In some aspects, the brush holder assembly includes a removable catch arm removably coupled to an upper beam and a lower beam of the brush holder assembly. Removal of the catch arm allows the upper beam to be disassembled from the lower beam.

Provided is a brush arrangement of a wind turbine lightning protection system, realized to provide a current path from a hub to a canopy of the wind turbine, which brush arrangement includes a brush holder arranged to hold a brush in electrical contact with a contact surface at the exterior of the canopy, which contact surface is electrically connected to the hub; a bracket arranged to electrically connect the brush with a mounting plate; characterized by an access opening in the front wall of the canopy, which access opening is dimensioned to accommodate the bracket and brush holder; and a mounting arrangement for securing the mounting plate to the canopy front wall over the access opening, from within the canopy interior. A wind turbine including a lightning protection system with at least one such brush arrangement is also provided.

Provided is a brush arrangement of a wind turbine lightning protection system, realized to provide a current path from a hub to a canopy of the wind turbine, which brush arrangement includes a brush holder arranged to hold a brush in electrical contact with a contact surface at the exterior of the canopy, which contact surface is electrically connected to the hub; a bracket arranged to electrically connect the brush with a mounting plate; characterized by an access opening in the front wall of the canopy, which access opening is dimensioned to accommodate the bracket and brush holder; and a mounting arrangement for securing the mounting plate to the canopy front wall over the access opening, from within the canopy interior. A wind turbine including a lightning protection system with at least one such brush arrangement is also provided.

A turbogenerator includes a stator core defining a first end and a second end, a plurality of stator bars disposed within the stator core, each stator bar including a coolant flow path, and a parallel ring having a first segment and a second segment separate from the first segment. The parallel ring is coupled to the first end of the stator core and is arranged to electrically connect the plurality of stator bars and to fluidly connect the coolant flow paths of the plurality of stator bars. A tang includes a main chamber, a first coolant opening, a second coolant opening, and a distribution channel that fluidly interconnects the main chamber, the first coolant opening, and the second coolant opening. A first lead tube has a first lead end connected to the first coolant opening and a second lead end connected to the first segment, and a second lead tube separate from the first lead tube has a first lead end connected to the second coolant opening and a second lead end connected to the second segment. The plurality of stator bars, the parallel ring, the tang, the first lead tube, and the second lead tube cooperate to define a portion of a circuit and a portion of a cooling path.

The disclosure relates to a slip ring assembly, which has a slip ring body and at least one slip ring arranged on the slip ring body and a contact module having contact elements. The contact elements contact a slideway of the slip ring. A cleaning device is provided for cleaning the slideway. According to the disclosure, the cleaning device has a cleaning brush having a brush filling contacting the slideway.

The disclosure relates to a slip ring assembly, which has a slip ring body and at least one slip ring arranged on the slip ring body and a contact module having contact elements. The contact elements contact a slideway of the slip ring. A cleaning device is provided for cleaning the slideway. According to the disclosure, the cleaning device has a cleaning brush having a brush filling contacting the slideway.

A shunt extends from a brush received by a brush box of a brush holder. The first end of the shunt can be connected to the brush, and the second end of the shunt can connect to the brush holder. A lever connects to a back plate of the brush holder, and the lever may reversibly and selectively rotate between a first position and a second position; the lever can have a distal portion, and the second position of the lever secures a portion of the shunt between the distal portion of the lever and another component of the brush holder. The secured portion of the shunt can restrict downward movement of the brush in the brush box, while a spring pushes downward on the brush in the brush in the brush box, to thereby fixedly position the brush in the brush box.

A shunt extends from a brush received by a brush box of a brush holder. The first end of the shunt can be connected to the brush, and the second end of the shunt can connect to the brush holder. A lever connects to a back plate of the brush holder, and the lever may reversibly and selectively rotate between a first position and a second position; the lever can have a distal portion, and the second position of the lever secures a portion of the shunt between the distal portion of the lever and another component of the brush holder. The secured portion of the shunt can restrict downward movement of the brush in the brush box, while a spring pushes downward on the brush in the brush in the brush box, to thereby fixedly position the brush in the brush box.