Multiphase brushless AC electric machine

Details Multiphase brushless AC electric machine Multiphase brushless AC electric machine

1994-12-02

1998-05-19

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310180, 310216, 310254, 310261, H02K 2112

Patent

active

057539910

ABSTRACT:
The multiphase brushless AC electric machine comprises a stator frame having a surface provided with parallel slots and projections disposed alternately, each of the openings being substantially as wide as the widest width of the corresponding slot; and a rotor frame having a surface provided with permanent magnet means having respective surface sections facing the slots and projections. All of the surface sections of the magnet means produce a magnetic flux density having a component average amplitude B.sub.r (.theta.) perpendicular to the corresponding surface of the stator, which is substantially defined by the following equation:

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