汽车发电机定子性能参数分析

Analysis of Performance Parameters of Automobile Generator Stator

为使汽车发电机在车辆不同工况下均能满足供电需求,分析并验证了汽车交流发电机定子总成的参数对发电机额定功率和输出特性的影响,结果表明:在定子铁心尺寸规格不变的情况下,不改变槽满率并减小匝数,可提升额定功率,但低速条件下的输出功率下降;由星形接法改为三角形接法或增加中性点,均能在不改变低速输出功率的情况下提高额定功率;将三相电枢绕组改为六相,几乎不影响额定功率和输出特性,但能使输出电流的纹波峰峰值降低。

In order to ensure that the automotive generator can meet the power supply requirements under different operating conditions of the vehicle,the influence of the parameters of the automotive AC generator stator assembly on the rated power and output characteristics of the generator was analyzed and verified.The results show that,under the condition of stator core size specifications unchanged,the rated power can be increased without changing the slot filling rate and reducing the number of turns,but the output power can be reduced under low-speed conditions.Changing from star connection to triangle connection or adding a neutral point can increase the rated power without changing the low-speed output power.Changing the three-phase armature winding to six phases hardly affects the rated power and output characteristics,but can reduce the ripple peak value of the output current.