Permanent magnet motor applicable to high overload running

Abstract

The invention discloses a permanent magnet motor applicable to high overload running, belongs to the technical field of motors, and aims at providing a permanent magnet motor which is simple structure and has high overload capacity to overcome the defects in the prior art. Therefore, the requirements on a high overload permanent magnet motor system in special fields are met. A machine case is in an annular structure; a stator core is also in the annular structure; the stator core is fixedly arranged on the inner circumferential surface of the machine case; a plurality of stator teeth are arranged on the inner circumferential surface of the stator core; various stator teeth, in the same phase, of the stator core are unequal in width; a winding winds each stator tooth of the stator core; 2p permanent magnets are tightly arranged into a cylindrical form and are arranged in the stator core; the 2p permanent magnets which are tightly arranged into the cylindrical form and the stator core are coaxially arranged; a gap is formed between each permanent magnet and the stator core; and rotating shafts are fixedly arranged in the 2p permanent magnets which are tightly arranged into the cylindrical form. The permanent magnet motor is applied to the fields such as aerospace, automotive power and lathe processing.

Description

technical field [0001] The invention relates to a permanent magnet motor and belongs to the technical field of motors. Background technique [0002] In recent years, the application of permanent magnet motors in the fields of national economy and national defense has received extensive attention, and new applications are still being gradually expanded. However, in some special fields such as aerospace, automobile power, lathe processing, etc., due to the characteristics of intermittently changing load conditions, motors with high overload capacity have become the goal pursued by people, that is, it is expected that the motor can output much more than the rated power under specific conditions. load torque. Taking the electric steering gear for aircraft as an example, when the aircraft overcomes disturbances and runs smoothly, the required output torque of the motor is small; The output torque of the motor is much higher than that under normal operating conditions. This pla...

AI Technical Summary

Problems solved by technology

However, for conventionally designed motors, due to the non-linearity of the magnetic circuit, when overloaded, the required electrical load increases greatly, causing the motor to heat up severely, which cannot meet the application requirements

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