电容运转电机由定子组件、转子组件、支架组件组成。定子接到交流电网，依靠电磁感应作用使转子产生感应电流，产生电磁转矩，从而达到转换机电能量的目的。当电流流入定子绕组时，电流分别在定子组件的主绕组与副绕组中产生两个电流回路，由于副绕组的电容的影响，副绕组的电流超前主绕组的电流约90度的相位，从而在气隙中将产生一旋转磁场，并以同步转速在旋转。当旋转磁场切割转子导体时，将在其中产生感应电势，电势的方向用右手定则来判断。由于转子绕组是短路的(铸铝转子)，在转子导体中便有电流流过，转子导体中的电流与气隙磁场相作用而产生电磁转矩，转矩方向用左手定则来判断。它与旋转磁场同方向，在电磁转矩作用下，转子以转速(小于同步转速)顺着磁场方向旋转。 The capacitor running motor is composed of a stator assembly, a rotor assembly and a support assembly. The stator is connected to the AC power grid, and the rotor generates induced current and electromagnetic torque by electromagnetic induction, so as to achieve the purpose of converting the electromechanical energy. When the current flows into the stator winding, the current generates two current loops in the main winding and the secondary winding of the stator component respectively. Due to the influence of the capacitance of the secondary winding, the current in the secondary winding is about 90 degrees in phase ahead of the current in the main winding, so that a rotating magnetic field will be generated in the air gap and rotate at synchronous speed. When the rotating magnetic field cuts the rotor conductor, an induced potential is generated in it, and the direction of the potential is judged by the right hand rule. Because the rotor winding is short-circuited (cast aluminum rotor), there is current flowing in the rotor conductor, and the current in the rotor conductor acts with the air gap magnetic field to produce electromagnetic torque, and the direction of torque is judged by the left-hand rule. It is in the same direction as the rotating magnetic field, and under the action of electromagnetic torque, the rotor rotates in the direction of the magnetic field at a speed (less than the synchronous speed).