摘  要：基于42 V汽车异步发电系统，采用新颖的直接功率控制方法，通过对系统输出的瞬时有功功率和定子磁链进行综合控制，在速度变化、负载突加、突卸情况下得到稳定输出的42 V直流电压。控制方案既避免了矢量控制转子磁链难以观测、计算复杂以及易受电机参数影响；又避免了直接转矩控制方案中开关频率不恒定、采样频率高、无交流电压传感器及测速传感器，节约了系统成本。直接功率控制策略已得到实验验证。
关键词：异步发电机；直接功率控制；无交流电压传感器；无测速传感器；稳压

Abstract: In this paper,a 42 V automobile induction machine generation system was presented.A direct power control methodology was proposed.In order to stablize 42 V output DC voltage during load-dump and jump-start charging at varying speed conditions by controlling the instantaneous active power and stator flux.The system was significant cost savings for AC voltage sensorless and speed sensorless.The proposed approaches were evaluated by the experimental results.
Key Words: Induction generator;Direct power control;AC voltage sensorless;Speed sensorless;Voltage stabilization