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電容運轉電機由定子組件、轉子組件、支架組件組成。定子接到交流電網，依靠電磁感應作用使轉子產生感應電流，產生電磁轉矩，從而達到轉換機電能量的目的。當電流流入定子繞組時，電流分別在定子組件的主繞組與副繞組中產生兩個電流回路，由于副繞組的電容的影響，副繞組的電流超前主繞組的電流約90度的相位，從而在氣隙中將產生一旋轉磁場，并以同步轉速在旋轉。當旋轉磁場切割轉子導體時，將在其中產生感應電勢，電勢的方向用右手定則來判斷。由于轉子繞組是短路的(鑄鋁轉子)，在轉子導體中便有電流流過，轉子導體中的電流與氣隙磁場相作用而產生電磁轉矩，轉矩方向用左手定則來判斷。它與旋轉磁場同方向，在電磁轉矩作用下，轉子以轉速(小于同步轉速)順著磁場方向旋轉。 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).