Motor magnet arrangement

Claim 1

A magnet arrangement for a permanent magnet-excited electric motor, the magnet arrangement comprising a radial magnet having a radially magnetized magnet surface, said magnet surface having a circumference, the circumference having a pole sequence which alternates over the circumference of the magnet surface, said magnet arrangement comprising three magnet segments each having a plurality of poles which alternate and follow each other in a circumferential direction of the magnet arrangement, each magnet segment having a portion of at least one pole provided thereon such that at least one pole extends over two adjacent magnet segments with a division between adjacent segments such that the division is not centered on a pole, said three magnet segments having equal lengths, said magnet arrangement having at least four poles wherein a first of said magnet segments is occupied by a complete pole and one-third of a following second pole, that the next magnet segment is occupied by two-thirds of the second pole and two-thirds of a third pole and that the third magnet segment is occupied by one-third of the third pole and a complete fourth pole.