Permanently excited synchronous motor with the suppression of with the improvement of the torque ripple

摘要

With a permanently excited synchronous motor with grooves (5) stand (2) and provided with a permanent magnet (20 – 29), the magnetic poles (30) form a rotor (31) is provided.a) first suppressing means in the form of a pole coverage (x), which, in relation to one pole pitch (τ_p) the permanent magnets (20 – 29) is less than one,b) second suppressing means in the form of a first staggering of the permanent magnets (20 – 29) of a pole (30) with a first scale angle (α_St1), andc) third suppressing means in the form of a second staggering of the permanent magnets (20 – 29) of a pole (30) with a second scale angle (α_St2), so that there is a double staggering,are provided.d) of the first scale angle α_St1 a value in accordance with: , with i any arbitrary natural number greater than zero, with k is a the ordinal number of a harmonic to be suppressed in the torque of the synchronous machine and is designated with p is a number of pole pairs.