Abstract: An electric turbomachine for use with an internal combustion engine, a turbocharger or a fuel cell e-compressor, said electric turbomachine comprising: a high-speed electrical machine located internally within a housing that is arranged to be rotationally drive a shaft (30) about a rotational axis (R); a compressor that is arranged to compress fluid within a turbo compressor when it is rotationally driven about the rotational axis (R) by the shaft; and a power electronics assembly (190) that is arranged to supply power to the electrical machine; a control assembly (230) that is arranged to control the power supplied by the power electronics assembly to the electrical machine, wherein the power electronics assembly is mounted externally on the housing (50) on a first surface of the housing and the control assembly is mounted externally on the housing on a second surface of the housing.

Abstract: An electric turbomachine for use with an internal combustion engine, turbocharger or a fuel cell e-compressor, said electric turbomachine comprising: a compressor (20) that is arranged to compress fluid within a turbo compressor when it is rotationally driven about a rotational axis (R) by a shaft, said shaft being rotational supported by a drive-end bearing (65) and a non-drive-end bearing (85), and a high-speed electrical machine located within a housing (50) that is arranged to rotationally drive the shaft about the rotational axis (R); said housing comprising a drive-end wall (60) that the shafts extends through to rotationally drive the compressor, a non-drive- end wall (80) at the opposing end of the electric turbomachine to the compressor, and a side wall (55) that extends between the drive-end wall and the non-drive-end wall, and wherein the electric turbomachine comprises a cooling system (330), for receiving a flow of a coolant fluid to cool the electric turbomachine, that is integrated within the h

Abstract: A turbogenerator power electronics system for use with a turbogenerator is described, wherein the turbogenerator power electronics system comprises a plurality of power electronics subsystems connected in parallel, each power electronics subsystem comprising an inverter. In such a way, a modular, reconfigurable power electronics system with increased ability to operate during a fault is provided.

Abstract: A system for recovering exhaust energy from fluid in an exhaust conduit of a reciprocating engine is described. There is an organic rankine cycle having a heat exchanger arranged to evaporate a working fluid of the organic rankine cycle passing through a low temperature side of the heat exchanger, in which the exhaust conduit is arranged in fluid communication with an inlet of a high temperature side of the heat exchanger for heat exchange of the fluid in the exhaust conduit downstream of the reciprocating engine to the working fluid of the organic rankine cycle. Also a turbine is arranged to receive the working fluid evaporation expansion and then a generator driven by the turbine is arranged to convert shaft power into electric power.

Abstract: A turbogenerator power electronics system for use with a turbogenerator is described, wherein the turbogenerator power electronics system comprises a plurality of power electronics subsystems connected in parallel, each power electronics subsystem comprising an inverter. In such a way, a modular, reconfigurable power electronics system with increased ability to operate during a fault is provided.

Abstract: A turbogenerator system for extracting energy from a fluid stream is described. The system comprises a turbogenerator arranged to be driven by the fluid, the turbogenerator comprising a turbogenerator turbine having an inlet for receiving the fluid and an outlet for exhausting the fluid. The turbogenerator further comprises an alternator arranged on an output shaft of the turbogenerator turbine for the conversion of shaft power into electrical power. A control arrangement is provided for controlling operation of the turbogenerator in dependence upon operating conditions for the turbogenerator system.