2/8 pole duplex winding double-speed three-phase asynchronous motor

• Main Author: YU HAIGANG
• Format: Patent
• Language: Chinese; English
• Published: 21.05.2014
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The utility model discloses a 2/8 pole duplex winding double-speed three-phase asynchronous motor, comprising two sets of stator windings corresponding to a 2 pole and a 8 pole. The two sets of stator winding use a Y-type connection or a [delta]-type connection. The number of parallel paths of the 2 pole stator winding is one. The number of parallel paths of the 8 pole stator winding is one, two, or four. A pole phase group of a motor is arranged in a sequence of U, -W, V, -U, W, and -V. When the [delta]-type connection is used for the 6 pole stator winding, for any phase of windings in the 2 pole stator winding, anode coil groups and cathode coil groups are connected in series to form a branch circuit. Through correct connection of the coil groups, the 2 pole stator winding and the 8 pole stator winding totally have twelve connections to be selected for design, respectively are [delta]/[delta], Y/Y, Y/[delta], [delta]/Y, [delta]/2[delta], Y/2Y, Y/2[delta], [delta]/2Y, [delta]/4[delta], Y/4Y, Y/4[delta], and