关键词: 永磁被动补偿脉冲发电机, 电感计算, 磁矢位, 子域法

Abstract: Discharge process of permanent magnet passively compensated pulsed alternator is a complex electromagnetic transient process. There are issues with the mathematical modeling of permanent magnet passively compensated pulsed alternator, such as oversimplified models, unclear principle explanations, and difficulties in calculation and solution. An inductance calculation model based on subdomain method was proposed, which considered factors such as the size of the armature winding and the influence of the eddy current magnetic field in the shielding cylinder. A mathematical model and a finite element model were established for a prototype. The comparison between finite element simulation and analytical calculation results proved that this calculation model had higher accuracy and wider applicability than existing models, and it can be used for analytical calculation of the discharge process of permanent magnet passively
compensated pulsed alternator.

Key words: permanent magnet passively compensated pulsed alternator, inductance calculation, magnetic vector potential, subdomain method