Analysis of Repetition Capacitor Charge System Based on Permanent Magnet Excited Homopolar Inductor Alternator

This article proposes a capacitor charging pulse power supply based on a permanent magnet excitation homopolar inductor generator (HIG). Compared with ordinary HIG, it does not require an external excitation power supply, and has the advantages of a simpler system and no excitation loss in the motor. And a mechanical magnetic adjustment method was adopted to reduce iron loss during no-load operation. The average value analysis model of the power supply system was analyzed, and it was pointed out that the difference between the permanent magnet excitation induction motor and the ordinary induction motor model lies in the different values of the equivalent internal inductance. The equivalent inductance of the permanent magnet excitation HIG is related to the dq axis inductance value, while the equivalent inductance of the ordinary HIG is related to the transient dq axis inductance value. The correctness of the average-value model was verified through finite element simulation, and the effectiveness of the magnetic adjustment ring was verified, which can significantly reduce the no-load iron loss of the motor.