High-power-density high-efficiency high-reliability magnetic claw motor

Abstract

The invention provides a high-power-density high-efficiency high-reliability magnetic claw motor. The motor is formed by a plurality of magnetic claw motor modules. Two adjacent magnetic claw motor modules deviate a specific angle in the axial direction at the stator side or the rotor side. Each magnetic claw motor module is a single-stator single-rotor structure, and comprises one rotor magneticcore, a plurality of stator magnetic cores, a plurality of special-shaped permanent magnets and armature windings, wherein the plurality of stator magnetic cores, the plurality of special-shaped permanent magnets and the armature windings form a stator; and the plurality of stator magnetic cores and the plurality of special-shaped permanent magnets are in cross arrangement to form a complete circle structure in the circumferential direction. Each stator magnetic core is internally provided with one armature winding; the armature windings adopt a global ring winding structure; the armature windings are wholly in a circle shape; and the number of the stator magnetic cores is equal to that of the special-shaped permanent magnets. The stator magnetic core is in a claw-pole structure. The special-shaped permanent magnets carry out magnetizing in the circumferential direction of the motor, and the adjacent special-shaped permanent magnets are opposite in magnetizing direction. The motor is high in power density, high in efficiency and high in reliability.

Description

technical field [0001] The invention relates to the technical field of transverse magnetic flux permanent magnet motors, in particular to a magnetic claw motor with high power density, high efficiency and high reliability. Background technique [0002] Transverse flux permanent magnet motor is a new type of motor in recent years. Compared with axial flux motor and radial flux motor, when the axial length and radial length are relatively large, it has higher power density. The claw-pole motor is a special case of the transverse flux motor. Compared with the traditional flux-switching motor, it makes better use of the three-dimensional magnetic field in space. The performance of the claw-pole motor is better when suitable magnetic materials are selected. [0003] However, the structure of the claw-pole motor is not perfect at present, and there are still the following shortcomings: For example, the document CN200910135921 is a typical claw-pole alternator. The stator and arma...

AI Technical Summary

Problems solved by technology

However, due to the use of electric excitation windings and claw pole magnetic cores made of cast iron, and because the claw pole structure is more complicated, it cannot be made of silicon steel sheets, so its efficiency is low

Document CN201410625300 discloses a special claw pole motor rotor structure that reduces iron loss. The rotor structure includes at least one set of claw poles. A powdered iron core block is fixed on the outer surface of the claw poles to reduce iron loss. Grooves are made on the surface, and powdered iron core blocks are embedded in the grooves. The eddy current loss of the claw pole motor can be reduced by using iron powder materials. By using permanent magnets to generate excitation flux, the efficiency of the claw pole motor can be effectively improved. However, its power factor is low, which will increase the capacity of the inverter

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