Alstom

Converteam Technology Ltd.

Converteam Gmbh

Converteam UK Ltd.

Clive Lewis

Graham LeFlem

David Christopher Brook

Allan David Crane

Joseph Christy Eugene

A power distribution system that can be used in naval ships and submarines includes a first propulsion drive system including a propulsion motor having superconducting (preferably high temperature superconducting (HTS)) rotor windings and a power converter. A first propulsion power generation system supplies power to the first propulsion drive system and includes a generator having superconducting (preferably HTS) rotor windings and a power converter. A first power generation system includes a power source for supplying power to a first service distribution system that includes a dc distribution busbar (optionally implemented using HTS cabling or busbar) for carrying a distribution voltage and a distribution current, and a switchboard that includes protective switchgear with contacts. A power converter is used to connect the power source to the switchboard. The power converters are regulated according to a power source foldback and stabilizing characteristic. An electric load is supplied with power from a zonal power supply unit that forms part of a zonal power distribution sub-system. The electric load and the propulsion motor are regulated according to a load shedding and stabilizing characteristic.

Marine power distribution and propulsion systems

An improved synchronous tubular electrical machine comprises a radially outer member that has a substantially cylindrical inner surface and radially inner member that is substantially cylindrical and is coaxially disposed within the outer member such that it may move reciprocally relative to the outer member in the axial direction. A plurality of axially spaced circumferential armature coils are electrically insulated from one another and are formed as part of one of the outer member and the inner member. A plurality of axially spaced circumferential superconducting coils are formed as part of the other of the outer member and the inner member. During operation of the tubular machine, each superconducting coil is maintained in a superconducting state and an electrical current is supplied to each superconducting coil in such a manner that the current flowing around each coil is in the opposite direction to the current flowing around the coils adjacent to it. Such tubular machines may be significantly more efficient, have higher peak-mean power ratios and be much smaller than current permanent magnet based synchronous tubular electrical machines.

Tubular electrical machines

A stator for a high power density air gap electrical machine comprises an outer annular laminated iron stator core and a stator winding comprising a plurality of coils having linear conductor portions extending substantially parallel to a longitudinal axis of the machine. Support teeth for the coils are fabricated from a non-magnetic material, with each support being interposed between two adjacent ones of the linear conductor portions of the coils. The supports not only supplement the mechanical strength of the winding but also define channels for the flow of coolant to extract heat from the coils.

Cooling of electrical machines

A propulsion unit arranged to propel a waterborne vessel comprises an electric motor arranged to provide propulsion, and a housing arranged to contain the motor. The motor is mounted within the housing on resilient couplings. Such propulsion units are used to propel ships, and the like, and are suspended from beneath the vessel. The resilient couplings reduce the noise emitted by the housing.

Propulsion unit

A propulsion unit arranged to propel a waterborne vessel comprising an electric motor arranged to provide propulsion, and a housing arranged to contain the motor. The motor is mounted within the housing on resilient couplings. Such propulsion units are used to propel ships, and the like, and are suspended from beneath the vessel. The resilient couplings reduce the noise emitted by the housing.

Growing community of inventors

Rugby, United Kingdom

Clive Lewis