An electrical motor includes: a rotor; a stator including a stator core that is formed with a plurality of first slot units and a plurality of second slot units which are alternately disposed with the first slot units, each of the first slot units including at least two first slots, each of the second slot units including at least two second slots, the stator core being further formed with a plurality of first poles each disposed between the first slots of a respective one of the first slot units, and a plurality of second poles each disposed between the second slots of a respective one of the second slot units, the depth of each first slot being deeper than that of each second slot; a first winding that is wound on the first poles; and a second winding that is wound on the second poles.