VARIABLE MAGNETIC FLUX DYNAMO-ELECTRIC MACHINE

摘要

To provide a technology capable of improving magnetic flux characteristics of permanent magnets constituting one magnetic pole, without increasing the cost of manufacture.SOLUTION: A variable magnetic flux dynamo-electric machine has a stator (1) generating a revolving magnetic field, and a rotor (2) placed via an air gap (9) of a prescribed width or the stator (1). The rotor (2) of the variable magnetic flux dynamo-electric machine has a rotor core (12), multiple flux barriers (5) provided in the hoop direction in the rotor core (12), and magnet fitting holes (30) placed between the multiple flux barriers (5) and fitted with permanent magnets (3). In the magnet fitting holes (30), the depth from the outer peripheral surface of the rotor core (12) in the hoop direction center on the outer peripheral side is set shallower than the depth from the outer peripheral surface of the rotor core (12) at the hoop direction end on the outer peripheral side, and multiple permanent magnets (permanent magnet pieces) of different magnetic characteristics are fitted side by side in the hoop direction to constitute one magnetic pole.SELECTED DRAWING: Figure 7