VALVE-TYPE MOTOR Russian patent published in 2002 - IPC

FIELD: electrical engineering; variable- and constant-speed electric drives. SUBSTANCE: valve-type motor that may be found useful for tools and devices requiring both low- and high-power motors has rotor with working permanent magnets, stator with windings and poles, rotor position sensors whose magnetic system is provided with cylindrical shell, and set of magnetic cores and auxiliary magnets functionally coupled with rotor; auxiliary magnets are made in the form of ring segments which are spaced apart and disposed so that polarity of magnetization among them is varying. Novelty is that at least one of stator poles has bevel angle calculated from equation where α_b is bevel angle; δ_c is air gap calculation factor; k is air gap coefficient of proportionality; b_s is pole width. EFFECT: enhanced reliability, enlarged functional capabilities. 2 cl, 3 dwg