D.C. machine of type having permanent magnets with auxiliary pol

Details D.C. machine of type having permanent magnets with auxiliary pol D.C. machine of type having permanent magnets with auxiliary pol

1990-06-28

1992-02-25

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310198, 310258, 310261, H02K 2304

Patent

active

050916670

ABSTRACT:
A direct current machine is characterized in that each of field poles and an armature are formed to satisfy a condition that an internal peripheral width Wa of each auxiliary pole is equal to or greater than a distal end width Wt of each tooth and equal to or less than twice a distal end width Ws of each slot plus the distal end width of each tooth (Wt.ltoreq.Wa.ltoreq.2Ws+Wt). The D.C. machine also is characterized in that each of the field poles and the armature are formed to satisfy a condition that an inner peripheral width Wm of the permanent magnet is equal to or greater than twice a slot pitch Wp of the armature core and equal to or less than twice the slot pitch Wp plus the distal end width Wt of each tooth (2Wp.ltoreq.Wm.ltoreq.2Wp+Wt).

REFERENCES:
patent: 4469969 (1984-09-01), Tomite
patent: 4823037 (1989-04-01), Abukawa
patent: 4876473 (1989-10-01), Tanaka
patent: 4918830 (1990-09-01), Aso

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