Ipm rotating electric machine

Details Ipm rotating electric machine Ipm rotating electric machine

H - Electricity

02

K

H02K 21/16 (2006.01) H02K 1/14 (2006.01) H02K 1/22 (2006.01) H02K 29/00 (2006.01)

Patent

CA 2555124

A technique enabling permanent magnets constituting the field of an IPM rotating electric machine to be embedded in a rotor core in a shallower depth. The IPM rotating electric machine includes a stator and a rotor. The rotor has a rotor core and permanent magnets forming the field. The rotor core has a side face facing the stator, and the permanent magnets are shallowly embedded in the rotor core such that the distance between its magnetic pole face and the side face of the rotor is reduced. Furthermore, two adjacent permanent magnets are positively separated to satisfy the relation of 0.3<(Lq-Ld)/Ld, where Lq is the q-axis inductance and Ld is the d-axis inductance of the rotor.

Technique permettant d~encastrer des aimants permanents constituant le champ d~une machine électrique rotative à aimants permanents internes dans un noyau de rotor à une profondeur moins importante. La machine électrique rotative à aimants permanents internes comporte un stator et un rotor. Le rotor possède un noyau de rotor et des aimants permanents formant le champ. Le noyau de rotor présente une face latérale tournée vers le stator, et les aimants permanents sont encastrés à faible profondeur dans le noyau de rotor de façon à réduire la distance entre son pôle magnétique et la face latérale du rotor. De plus, deux aimants permanents adjacents sont positivement séparés pour obéir à la relation 0,3<(L¿q?-L¿d?)/L¿d?, où L¿q? est l~inductance sur l~axe q et L¿d? est l~inductance sur l~axe d du rotor.

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