초록 ▼

A squirrel-cage induction motor having a sectional stator comprising a first stator fixedly held on a frame, and a second stator circumferentially movably supported on the frame beside the first stator. The second stator is displaced relative to the first stator through a gear mechanism by a control

A squirrel-cage induction motor having a sectional stator comprising a first stator fixedly held on a frame, and a second stator circumferentially movably supported on the frame beside the first stator. The second stator is displaced relative to the first stator through a gear mechanism by a control motor through an angle meeting operating conditions of the squirrel-cage motor required by the load. Thus, the squirrel-cage induction motor has satisfactory response characteristics, and the second stator can manually be turned in case the component of the mechanism for driving the second stator, for example, the control motor, malfunctions.

대표청구항 ▼

A squirrel-cage induction motor comprising; a frame; a squirrel-cage rotor rotatably supported on the frame; a first stator disposed around the squirrel-cage rotor within the frame and fixedly held on the frame; and a second stator having the same number of poles and slots as the first stator circum

A squirrel-cage induction motor comprising; a frame; a squirrel-cage rotor rotatably supported on the frame; a first stator disposed around the squirrel-cage rotor within the frame and fixedly held on the frame; and a second stator having the same number of poles and slots as the first stator circumferentially movably within an angular range corresponding to one pole pitch of magnetic pole disposed around the squirrel-cage rotor within the frame beside the first stator with respect to the axial direction, stator being interlocked with a control motor through a gear mechanism including a segmental worm gear provided fixedly on the circumference of said second stator, and a worm meshing with the segmental worm gear is fixed to the output shaft of said control motor, and a control unit determines the direction and amount of angular displacement of the second stator on the basis of operating conditions required by the load and controls said control motor so as to turn the second stator accordingly.