A method of assembling an axial flux machine is disclosed. The method comprises a supplying a clutch mechanism; attaching a first rotor to an outer surface of the clutch basket; applying a spacer to the surface of first rotor comprising the permanent magnets; arranging a stator co-axially with the clutch and adjacen...

A stator having a plurality of stator bars disposed circumferentially at intervals around an axis is provided. Each of the stator bars has a set of windings wound therearound for generating a magnetic field generally parallel to the axis. A plurality of radially outwardly disposed electrical interconnects for connec...

The present invention relates to a semiconductor cooling arrangement for cooling semiconductor devices, such as power semiconductors. The semiconductor cooling arrangement comprises one or more semiconductor assemblies located in a chamber within a housing. The housing comprises inlet and outlet ports for receiving ...

We describe a power converter cooling arrangement in which a base has a top plate of a thermally conductive material, and a bottom plate and side walls define a chamber. An inlet and outlet are in fluid communication with the chamber, and the chamber is flooded with a cooling fluid that flows between the inlet and o...

A semiconductor cooling arrangement. The semiconductor cooling arrangement comprises one or more semiconductor assemblies, a housing, and one or more baffles. Each semiconductor assembly comprises a heatsink, a semiconductor die, an encapsulant, and electrical connections. The semiconductor die is bonded to the heat...

A method of manufacturing permanent magnets for an axial flux permanent magnet machine. The axial flux permanent magnet machine comprises a stator with a set of coils disposed circumferentially at intervals about a machine axis, and a rotor bearing a set of permanent magnets disposed circumferentially at intervals a...

A rotor (10) for a rotary electric machine is described, the rotor (10) comprising a support disc (14) having opposing first and second faces, a support member (20), and a plurality of permanent magnets (22) mounted to and retained by the support member, wherein the support member is secured to the first face of the...

A method of manufacturing a rotor of an axial flux permanent magnet machine, the machine having a stator comprising a set of coils wound on respective stator bars and disposed circumferentially at intervals about an axis of the machine, and a rotor comprising a rotor body bearing a set of permanent magnets on a laye...

We describe a converter for generating a multi-phase output voltage that uses a three-level converter having Upper pairs of switches (Upper and Mid-Lower) and Lower pairs of switches (Lower and Mid-Upper) arranged between positive and negative DC input voltages and an Intermediate DC voltage. A controller controls t...