A separator (10 60 65 100) is disclosed for electrically separating groups of end windings (52) in the stator of a rotating electrical machine. The separator is arranged to provide circumferential air channels (24 74 85) through the windings. This can allow air flow to be delivered to inside the windings thereby coo...

A baffle 30 is disclosed for directing cooling air in a rotating electrical machine comprising a stator core and end windings extending out of the stator core. The baffle comprises a first surface 33 arranged to direct air flow 44, 45 along an end face of the stator core 16, and a second surface 35 arranged to direc...

An adaptor is disclosed for connecting a generator to a prime mover. The adaptor (30) comprises a first flange member (32) for connection to the prime mover a second flange member (34) for connection to the generator and a plurality of angled cross members (36 38) between the first and second flange members. By prov...

Excitation control circuitry for a synchronous generator is disclosed. The synchronous generator is of a type comprising a main machine (2) and an exciter (6) for exciting the main machine. The excitation control circuitry comprises an automatic voltage regulator (10) for controlling power flow from the main machine...

A rotor (10) for a rotating electrical machine is disclosed. The rotor comprises a plurality of salient poles (12) and rotor windings (22, 24) wound on the salient poles. A cooling vent (26) is provided through the rotor windings, the cooling vent extending through the rotor windings in an axial direction and a radi...

A stator for a rotating electrical machine is disclosed, the stator comprising a plurality of stator slots 22 each of which accommodates a plurality of coils 40 of stator windings 18. Radial air gaps 46 are present between the coils of adjacent stator slots as the coils extend out of the stator slots. Insulating mea...

A deflector is disclosed for deflecting air flow in a rotating electrical machine comprising a stator (8), stator windings (10) and a housing (12). The deflector comprises a sheet of material folded to form a deflecting portion (42) and a connecting portion (44). The deflecting portion (42) is arranged to deflect ai...

A stator for a rotating electrical machine is disclosed, the stator comprising a stator core (16) comprising stator slots and a plurality of stator coils. The stator coils comprise side windings (17) located in the stator slots, end windings (18) which extend out of the stator slots, and end leads (28) for connectin...

A stator for a rotating electrical machine is disclosed, the stator comprising a stack of stator laminations (20) forming a stator core (48; 60; 74; 80; 82). A lamination (20) comprises a plurality of cooling fins (28) arranged in at least one group of at least two fins. The cooling fins in a group are connected by ...

A coupling disc (40) is disclosed for coupling a rotating electrical machine to a prime mover. The disc comprises an inner region (42) for connection to a rotating component of the electrical machine and an outer region (46) for connection to a rotating component of the prime mover the inner region and the outer reg...

An excitation system (15) is disclosed for providing excitation to a main rotating electrical machine (2). The excitation system comprises an exciter (50) and an auxiliary generator (52). The exciter and the auxiliary generator have separate stator cores (14, 18) and share a common rotor core (16). The common rotor ...

A component for connection between a generator and a prime mover in a power generation system is disclosed. The component may be an adaptor (20, 50, 110) or a bracket (80, 90), and may be arranged to house a fan. The component comprises a rear member (24), a front member (22), and a plurality of cross members (26) w...

A fan for a rotating electrical machine is disclosed. The fan (14) comprises a plurality of fan blades (16) and a flow separator (24) for separating a first airflow entering the fan from a radially outwards part of the machine and second airflow entering the fan from a radially inwards part of the machine. The flo...

An adaptor for connecting a rotating electrical machine to a prime mover is disclosed. The adaptor comprises a first part (52) arranged to surround a fan, and a second part (54) arranged to provide access to a rotating component for connecting the rotating electrical machine to the prime mover. The first part provid...