Ac permanent magnet synchronous electrical machine

H - Electricity – 02 – K

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H02K 21/14 (2006.01)

Patent

CA 2737357

An AC permanent magnet synchronous electrical machine includes a stator (1) and a rotor (2). An air gap (7) is provided between the outer circumference of the rotor (2) and the inner wall of the stator (1). The minimum air gap length of the air gap (7) is g min, and a mechanical rotating angle of a position with the minimum air gap length is zero degree. The number of the pole pairs of the electrical machine is p. an air gap length of a position with an electrical degree of p.cndot..theta. is g(p.cndot..theta.). g(p.cndot..theta.) of a position within a certain electrical degree range is inversely proportional to a cosine function of the electrical degree.

L'invention concerne une machine électrique synchrone à courant alternatif à aimant permanent, comprenant un stator (1) et un rotor (2). Un entrefer (7) est ménagé entre la circonférence extérieure du rotor (2) et la paroi intérieure du stator (1). La longueur minimale d'entrefer de l'entrefer (7) est notée gmin, et un angle de rotation mécanique d'une position avec la longueur minimale d'entrefer est nul. Le nombre de paires de pôles de la machine électrique est noté p. Une longueur d'entrefer d'une position avec un degré électrique de p·? est notée g(p·?). g(p·?) d'une position dans une plage de degrés électriques est inversement proportionnelle à une fonction cosinus du degré électrique.

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