摘要：为实现宽速度范围永磁同步发电机（PMSG）对宽荷电状态（SOC）范围蓄电池的恒流充电，本文在传统的发电机矢量控制基础上进行改进，将直流充电电流作为外环控制变量，分析研究相关的PWM整流控制策略，以及发电机转速、蓄电池特性对充电性能的影响。对于蓄电池SOC过小或PMSG转速过高引起的充电电流失控问题，提出引入弱磁控制策略加以解决。通过仿真研究，验证控制策略的有效性。
关键词：永磁同步发电机；蓄电池负载；恒流充电；电池荷电状态；弱磁控制
Abstract: In order to realize constantcurrent charging of a battery with varying state of charging (SOC) by a widespeedrange permanent synchronous generator (PMSG), a new PWM rectifier control strategy was studied in this paper. The strategy was based on the traditional vector control of PMSG, but used DC charging current as the control variable of the outer control loop. Influence of the PMSG speed and the battery features was also investigated. To solve the problem of unstable DC charging current caused by the low SOC of battery or the over speed of PMSG, it was proposed to apply fieldweakening control on the PWM rectifier. Such control strategy was investigated and verified with simulation.
Key words: permanent magnet synchronous generator; battery load,;constantcurrent charging; state of charge; fieldweakening control