Research on Tangential Magnetization Parallel Magnetic Path Hybrid Excitation Synchronous Machine

A hybrid excitation motor with strong magnetizing ability is proposed. To solve the existing hybrid excitation machine problems, such as the difficulty of total adjustment of air gap magnetic field, many additional magnetic paths, fault tolerance is poor, and Air gap flux density harmonic distortion rate is high. According to the structural characteristics and the principle of magnetic regulation of tangential magnetization parallel magnetic path hybrid excitation synchronous machine. The equivalent magnetic path model of the motor was established, and the influence of electric excitation magnetic potential on permanent magnetic potential and air gap magnetic field was analyzed. With the ANSYS Maxwell finite element simulation software, the variation law of the magnetic field of the motor under different excitation conditions is studied. The influence of pole boot length and magnetic pole eccentricity on air gap flux density amplitude and harmonic distortion rate is discussed. The results show that due to the characteristics of the parallel magnetic path. The motor has obvious effect of adjusting magnetic field and gathering magnetic field, motor fault tolerance is excellent, and less additional magnetic path. In addition, the air gap density can be optimized by using reasonable pole boot length and magnetic pole eccentricity.