초록 ▼

A modular permanent-magnet electric motor assembly having a predetermined maximum power output for a submersible pump assembly, a stator having a plurality of electric coils adapted to be energized to create a magnetic field, and a rotor assembly disposed about a rotor shaft. The rotor assembly comp

A modular permanent-magnet electric motor assembly having a predetermined maximum power output for a submersible pump assembly, a stator having a plurality of electric coils adapted to be energized to create a magnetic field, and a rotor assembly disposed about a rotor shaft. The rotor assembly comprises a predetermined number of rotor modules sufficient to achieve the predetermined power output and a pair of bearing carriers separated by the rotor modules. Each rotor module comprises a rotor core and a plurality of magnets disposed about or otherwise associated with the rotor core. The magnetic field between the coils and the magnets causes rotation of the rotor modules, the rotor assembly, and, thus, the rotor shaft. The rotor assembly desirably also includes a protective sheath to prevent fluid from entering the rotor assembly and contacting the rotors. The predetermined number of rotor modules are installed on the shaft during the process of manufacturing the motor.

대표청구항 ▼

[ We claim:] [1.] A modular permanent-magnet electric motor assembly producing a predetermined maximum power output, for a submersible pump assembly having a shaft adapted to be rotatably driven by the motor assembly, the motor assembly comprising:a stator having a plurality of coils adapted to be e

[ We claim:] [1.] A modular permanent-magnet electric motor assembly producing a predetermined maximum power output, for a submersible pump assembly having a shaft adapted to be rotatably driven by the motor assembly, the motor assembly comprising:a stator having a plurality of coils adapted to be energized to create a magnetic field;a predetermined number of rotor modules sufficient to achieve the predetermined maximum power output for the motor assembly, each rotor module comprising a module core disposed about the shaft and a plurality of magnets associated with the module core; anda pair of bearing carriers disposed about the shaft and separated by the rotor modules.