Smartmotor As

Kongsberg Maritime Cm As

Sigurd Övrebö

Alexey Matveev

Richard Lund

Roy Nilsen

Stig Ove Stornes

Jörg Höyland

The invention relates to an electrical machine for submerged applications and an energy conversion system for conversion of mechanical energy of unidirectional or reciprocating linear or rotational motion into electric energy and vice versa. The electric energy may be in the form of DC or AC current and voltage. The system is totally submerged in pure or salt water. The enabling element of the invention is multi-pole permanent magnet synchronous machine with separately encapsulated stator and rotor, integrated with mechanical system and power electronics.

Electrical machine for submerged application and energy conversion system

Complete drive system, called motor-drive unit, for use in remote locations with limited radial space like downhole, narrow tunnels, pipelines and other applications with similar conditions. Given the spatial limitations the unit must have elongated shape. It includes a number of motors connected mechanically in series and a lower number of inverters, driving groups of the motors so that load is equally distributed along axis of the unit. Motors within each group can be electrically connected in series or in parallel. The motor-drive unit is supposed to be fed by DC voltage via a cable with length up to several km; therefore, it includes a buck converter for stabilization of voltage inside the unit and a power-line communication module to be controllable from the surface.

System for driving elongated electric machines

Growing community of inventors

Levanger, Norway

Sigurd Övrebö