A Modeling Method for Nonlinear Inductance of Three-phase Electrically Excited Doubly Salient Motor

Abstract

The present invention proposes a nonlinear inductance modeling method of a three-phase electrically excited double salient pole motor. According to the influence law of the armature current and the excitation current of the electrically excited double salient pole motor on the inductance parameters, firstly through two excitation current conditions The relationship curve of the influence of the armature current on the inductance parameter is obtained, and the translation amount of the horizontal axis of the two curves is obtained, corresponding to the excitation current difference between the two curves, and the influence relationship curve of the armature current on the inductance parameter within the full excitation current range is obtained. This method takes into account both the armature reaction and the influence of the excitation field change, and is an accurate and simple nonlinear modeling method for electrically excited doubly salient motors.

Description

Technical field[0001]The present invention relates to the field of motor modeling, in particular a three-phase electric inductor double-proof electrode motor inductance parameter modeling method.Background technique[0002]The electric incentive magnetic double male motor is a new magnetoresistive motor based on the development of permanent magnet double-proof electrical machines. It is determined, and the rotor is a polar structure. There is no winding in the rotor, the structure is simple, the reliability is high, and the stator groove is high. Placing the excitation windings Therefore, its air gap is flexible, and it is widely concerned in the fields of aviation, new energy. The air gap magnetic field of the electricity magnetic double-projection motor has a significant edge effect, a highly local saturation, and its armature reaction is more complicated, and existing magnetically effects and demeters, which leads to its inductance and armature current. The waveform is distortion, ...

AI Technical Summary

Problems solved by technology

The air gap magnetic field of the electrically excited double salient pole motor has significant edge effects and a high degree of local saturation. At the same time, its armature reaction is relatively complex, with both magnetization and demagnetization, which leads to its inductance and armature current The waveform of the electrically excited double salient pole motor is distorted, which makes the modeling of the electrically excited double salient pole motor more difficult. Therefore, it is of great significance to study the modeling of the nonlinear inductance of the electrically excited double salient pole motor.

[0003] At home and abroad, there are few studies on the inductance parameters of electrically excited doubly salient pole motors. Most of the methods used refer to the SRM inductance parameter modeling method, and the influence of armature reaction and excitation magnetic field changes on the inductance parameters is not considered at the same time.

Images