| 摘要 |
The invention relates to machinery industry, in particular to AC electric machines with teeth winding and can be used as an asynchronous motor or high-voltage synchronous generator. The electric machine includes a stator with 9p (9p-number of pole pairs) axially located teeth in the form of packs, ends of which in radial direction form stator recess, in axial direction – it is closed from both sides with circular magnet frame wound from band of electrotechnical steel. Coils of first and second parts of phase winding are located at teeth area of the magnet frame side, each part comprises 2p coil groups in series opposite connected. The coil group of the first pole pitch of every part of winding comprises two coils: first one enclosing three adjacent teeth, and a second one located at the middle tooth. At the second pole pitch the coil group is performed from one (third) coil located at a distance equal to two teeth pitches from first one and encloses two next teeth. A ratio of turn number in first, second and third coils is chosen 2:3:4.First and second parts of phase windings are opposite series connected. Due to reduction of phase winding coils quantity and incorporation of second magnet frame the electric machine provides simplification of construction and reducing the wire material consumption. |
