An axial flux machine is provided with an integrated clutch assembly which is housed within the bore of an annulus shaped stator of the machine. First and second rotors located either side of the stator are attached to the clutch basket of the clutch assembly and rotate in unison relative to the stator. A machine ho...

A semiconductor arrangement and an inverter incorporating the semiconductor arrangement, in particular to an inverter for use with traction power units e.g. for on and off road vehicles and stationary power inversion, are described. In the arrangement, semiconductor devices are thermally and electrically coupled to ...

A cooling arrangement, for cooling power devices such as semiconductor power devices, comprises a housing having sidewalls around the periphery of a baseplate, and a capping plate opposing the baseplate. The housing forms a cavity through which cooling fluid may flow between an inlet and an outlet disposed in the ho...

We describe a method and controller for controlling an axial flux machine in which an alternating current supplied to the plurality of coils injects a compensation current to reduce a mechanical resonant component of the rotor. The compensation current is a modulated current component added to at least one of the Qu...