Abstract: A generator controller for controlling a permanent magnet generator where each phase of the generator is connectable to a DC link via electrically controllable switches, the controller characterized by a data processor adapted to receive a measurement of generator current output and a demand current, and to form a current error between the demanded value and the measured generator current; derive a target voltage as a function of the current error; and form control signals for the electrically controllable switches as a function of the target voltage.

Abstract: A generator is configured to generate electrical power from a natural fluid flow, such as wind. The generator has interacting devices for interacting with the fluid flow to generate relative rotation between a first mechanical member (301) and a coaxial second mechanical member (303). The first mechanical member has a plurality of permanent magnets (301) attached thereto so as to define a plurality of magnetic poles. The magnetic poles generate a radial magnetic field that also extends towards the coaxial second member (303). The second member includes a plurality of radially extending teeth (304) that define open slots (305) therebetween. A respective pre-formed coil (306) is located over each alternate tooth such that a single coil winding occupies each of said slots and said coil windings generate an electromotive force during the relative rotation.

Abstract: A generator controller for controlling a permanent magnet generator where each phase of the generator is connectable to a DC link via electrically controllable switches, the controller characterised by a data processor adapted to receive a measurement of generator current output and a demand current, and to form a current error between the demanded value and the measured generator current; derive a target voltage as a function of the current error; and form control signals for the electrically controllable switches as a function of the target voltage.