<p>Torque pulsing is reduced while increasing torque. A synchronous electric motor comprises a rotor (2) and a stator (3). A plurality of stator teeth (7) constitute stator tooth groups (8) each consisting of the three stator teeth arranged in the circumferential direction. In each of the stator tooth groups (8), main windings are wound separately around the three teeth and a sub-winding is additionally wound around at least one stator tooth. The three main windings included in one of the stator tooth groups (8) are connected to the sub-winding included in another stator tooth group in series to constitute a phase winding. The sub-winding included in one of the stator tooth groups (8) is connected to the three main windings included in another stator tooth group in series to constitute a phase winding.</p>
