Radial magnetic field double-stator vernier motor

Abstract

The invention discloses a radial magnetic field double-stator vernier motor which comprises a ring-shaped rotor (2) and two cylindrical stators (1 and 4). Multiple permanent magnets are arranged on the periphery of a ring body of the rotor at uniform intervals, multiple grooves are reserved on the peripheral wall of a cylinder body of each stator, each groove is used for accommodating a winding, and a projection between each two adjacent grooves forms a stator tooth. The radial magnetic field double-stator vernier motor is characterized in that the two stators (1 and 4) are different in diameter and are in coaxial inner-outer sleeving arrangement, the grooves on the two stators are identical in number, the rotor (2) is coaxially sleeved between the two stators (1 and 4), and distance between each stator tooth of the inner stator (4) and the corresponding stator tooth of the outer stator (1) is half of a groove spacing angle peripherally. Under the circumstance that the motor is similar to a traditional vernier motor in torque density, power factor is improved greatly and can reach above 0.8.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a vernier motor, which is suitable for such as wind power generation, ship driving and the like. Background technique [0002] As a very important part of renewable energy, wind energy has been highly valued by countries all over the world including China. In the past few years, the installed capacity of wind power has increased by a large proportion for many consecutive years. Especially in China, wind power has become an important renewable energy industry. Among them, the wind turbine is one of the most critical components in the wind power generation system. Its design technology and production process have become the technological commanding heights of the competition among countries all over the world. Especially the direct drive wind turbine has low speed, large volume and heavy weight. , wind turbines with high power density can greatly reduce the weight and cost of win...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to propose a radial magnetic field double-stator vernier motor, through the arrangement of the rotor and the two stators and setting the relative positional relationship between the stator teeth and the rotor pole pieces, thereby improving the power factor and power density of the vernier motor and solving the problem There is a problem of low operational reliability caused by low power factor of the vernier motor

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