Two-pole permanent magnet solid rotor motor inductance design method based on flux linkage integration method

Abstract

The invention provides a two-pole permanent magnet solid rotor motor inductance design method based on a flux linkage integration method. The method comprises the following steps: (1) determining an armature magnetomotive force distribution function; (2) determining an equivalent air gap length function and a magnetic conductance distribution function; (3) calculating the flux linkage of each infinitesimal linkage; and (4) integrating the flux linkage within the inner diameter range of the stator core, calculating the flux linkage of each phase winding of the motor, and obtaining the inductance by using the method of the ratio of the flux linkage to the armature current amplitude.

Description

technical field [0001] The invention belongs to the field of high-speed motor design, and in particular relates to a design method for the inductance of a high-speed motor with a two-pole permanent magnet solid rotor. Background technique [0002] The high-speed motor is a direct-drive motor without multi-stage variable speed. Compared with the traditional multi-stage variable-speed drive mechanical structure, it has the characteristics of high transmission efficiency, simple structure of the whole machine, and high power density. my country is a big country in energy consumption and industrial manufacturing. , there is energy consumption and waste in energy conversion and transmission. If the occasions that require high-speed operation of mechanical components in traditional industries are replaced by high-speed motors, it will be of great significance to energy conservation and green production. The two-pole permanent magnet solid rotor is a unique rotor structure type of h...

AI Technical Summary

Problems solved by technology

Since there is no shaft in the two-pole solid permanent magnet rotor, the equivalent air gap lengths at different positions of the rotor are different. The air gap length involved in the traditional empirical coefficient method is not applicable to this type of motor; , it is usually necessary to carry out finite element modeling, subdivision, and solution of the stator and winding in advance, and rely on computer post-processing to calculate the inductance, which will consume more computer hardware resources and time, and the calculation results only have specific values ​​and are not universal

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