【摘要】 本文从满足园形旋转磁场的理想运行条件出发，确定辅相绕组与主相绕组有效匝数比和辅相绕组电路的串、并联电容．论证了选择负载时获得园形旋转磁场，既增大了电动机带负载能力，又加强了电动机的起动能力．并对传真机上使用的低速同步电动机的一种实际线路也作了分析．更多还原

【Abstract】 From the viewpoint of satisfying the ideal performance colldition with res- pect to circular rotating magnetic field, this paper proposes a method for det- ermining the effective turn ratio of the auxiliary phase winding to the main phase winding, as well as the series and parallel-connected capacitances in the auxiliary phase winding circuit. It has been demonstrated that the achievement of circular rotating field in selecting load not only increases the capability of load-bearing but also improves the starting performance of the motor. Analysis of the actual circuit in the telephote used to feed low-speed synchronous motor si also presented here.更多还原