Permanent magnet type electrical rotating machine

Details Permanent magnet type electrical rotating machine Permanent magnet type electrical rotating machine

H - Electricity

02

K

H02K 21/12 (2006.01) H02K 1/16 (2006.01) H02K 1/20 (2006.01) H02K 1/27 (2006.01) H02K 21/14 (2006.01) H02K 29/12 (2006.01)

Patent

CA 2259794

The present invention makes the slots of stator core 2A of stator 1A rectangular enclosed slots 4A in which triangular projecting parts 3a are formed on the inner periphery side of this stator core 2A. It cools stator core 2A by passing cooling gas through projecting parts 3a. It also causes the magnetic flux that reaches stator core 2A from permanent magnets 6 by passing through retaining ring 8 and air gap 9 to pass the inner periphery sides of projecting parts 3a of stator core 2A. By this means, it prevents oscillation of magnetic flux density in the peripheral direction, reduces the eddy currents in retaining ring 8 which accompany this oscillation, and prevents temperature rise.

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