Magnetic suspension permanent magnet motor wheel rim driving propeller

Abstract

The invention discloses a magnetic suspension permanent magnet motor wheel rim driving propeller, which comprises a shell, a stator assembly and a rotor assembly, and is characterized in that the stator assembly comprises a stator yoke hermetically mounted in an inner cavity of the shell, and a suspension force stator winding and a torque stator winding which are mounted on the stator yoke; the rotor assembly comprises a rotor ring, a permanent magnet fixed to the outer side wall of the rotor ring and blades installed on the inner ring side of the rotor ring, the stator assembly is located outside the rotor assembly, a gap is formed between the stator assembly and the rotor assembly, and an auxiliary mechanical bearing and an axial magnetic suspension bearing are further installed between the rotor assembly and the shell. The number of pole pairs of the suspension force stator winding and the torque stator winding is not equal so as to form magnetic fields with the permanent magnets on the rotor ring. The magnetic suspension permanent magnet motor rim driving propeller is simple and compact in structure, high in propelling efficiency, small in noise vibration and suitable for being applied to a subminiature propelling system of a ship.

Description

technical field [0001] The invention relates to the field of ship propellers, in particular to a rim-driven propeller of a magnetic suspension permanent magnet motor. Background technique [0002] In recent years, with the development of advanced ship technology, various high-performance ships have higher and higher requirements for their propellers. The disadvantages of traditional shaft-driven propellers have gradually become prominent, and they have been unable to better meet the work requirements. For example, the misalignment of the propulsion shafting caused by the deformation of the hull can easily lead to the failure of bearing lubrication, seal damage, severe vibration of the shafting, fracture of the connecting flange bolts, and even the fracture of the crankshaft of the main engine; the propulsion shafting occupies a lot of ship space, Reduced cargo volume. These deficiencies have led to a gradual shift towards more advanced shaftless propulsion systems. [0003...

AI Technical Summary

Problems solved by technology

However, for ultra-small propulsion systems, due to the limitation of the gap space between the stator and rotor, it is difficult for seawater to enter or flow after entering. In addition, the water-lubricated dynamic pressure bearing has a complex structure and many components, which is difficult to install and has limited load-carrying capacity. Development of ultra-small shaftless rim-driven propellers

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