Patent ID: 7095141

Claim:
A linear traveling field synchronous AC electric motor with a primary side ( 1 ) comprising concentrated windings ( 2 ); a series of toothed-modules ( 4 ) each wound with a coil ( 2 ), whereas each toothed-module ( 4 ) can comprise a single or a plurality of teeth ( 9 ), the coil of each successive toothed-module ( 4 ) being connected in the correct electrical phase sequence to a corresponding phase ( 11 ) of the motor electric supply ( 5 ), whereby each toothed-module ( 4 ) shows a contrarily winded winding and a contrarily applied current compared to its neighboring toothed-module ( 4 ), and the number of toothed-modules ( 4 ) is exactly equal to twice the number of motor phases ( 5 ), characterized in that a secondary side ( 16 ) arrangement is comprised of a plurality of magnets ( 14 ) which produce a magnetizing field that has no component of a fundamental phase current frequency and that interacts with an air-gap-flux produced by at least one harmonic of the fundamental current phase frequency applied to the primary side ( 1 ), said harmonic being thereby used as the base frequency for driving the motor.