초록 ▼

A variable speed rotary electric machine comprises a stator composed of a stator core and first and second stator windings wound on the stator core, and a cage rotor mounted rotatably within the stator and composed of a rotor core and rotor conductor disposed in a squirrel-cage configuration. The fi

A variable speed rotary electric machine comprises a stator composed of a stator core and first and second stator windings wound on the stator core, and a cage rotor mounted rotatably within the stator and composed of a rotor core and rotor conductor disposed in a squirrel-cage configuration. The first stator winding is connected to an AC power supply of a fixed frequency. The second stator winding is connected to a power supply of a variable frequency. The first and second stator windings are so wound as to form, respectively, numbers of poles differing from each other. The rotor conductors of the cage rotor are electromagnetically coupled with the magnetic flux generated by the first and second stator windings, respectively, and so disposed as to form a number of poles which is intermediate between the number of the poles formed by the first stator winding and the number of poles formed by said second stator winding.

대표청구항 ▼

A variable speed rotary electric machine, comprising a stator having first and second stator windings wound on a stator core and a cage rotor mounted rotatably within said stator and including a rotor core and rotor conductors constituting a cage rotor winding, wherein said first stator winding is c

A variable speed rotary electric machine, comprising a stator having first and second stator windings wound on a stator core and a cage rotor mounted rotatably within said stator and including a rotor core and rotor conductors constituting a cage rotor winding, wherein said first stator winding is connected to an AC power supply of a constant frequency while said second stator winding is connected to a power supply of variable frequency, said first and second stator windings being so wound as to form magnetic poles in numbers differing from each other, the rotor conductors of said cage rotor being electromagnetically coupled with magnetic fluxes generated by said first and second stator windings and so disposed as to form magnetic poles whose number is intermediate between the number of magnetic poles formed by said first stator winding and the number of magnetic poles formed by said second stator winding.