Single-phase AC permanent-magnet synchronous motor

Abstract

This invention relates to a single phase AC permanent synchronous electric motor composed of a stator winding and a permanent magnet rotor in which the stator winding contains a main winding and a sub winding the same wire gauge and conductor coil numbers composed of single-layer single lap or single-layer cross winding. The permanent magnet of the rotor and the magnet conductive core share the perimeter of the rotor and the magnetic density generated by the permanent magnet should be one third of that of the stator electric magnet and the electric-conduction metal bar numbers of the rotor squirrel-cage are determined by 0.81-0.92 times of those of the stator core slots. The invention ensures the efficiency power and torque outupt with high efficiency and electricity energy saving.

Description

technical field [0001] The invention relates to a single-phase permanent magnet synchronous motor. Background technique [0002] The traditional Y series asynchronous motor includes: stator, stator winding, rotor and casing, etc. This kind of motor has the following disadvantages: firstly, the copper loss and iron loss of the motor rotor are relatively large, and the two losses generally account for about 17% of the total loss. With the internal temperature rise of the motor, the copper loss and iron loss of the stator The loss increases in direct proportion; secondly, the asynchronous motor has the disadvantage of large slip, generally within 10%, resulting in a reduction in motor efficiency and output power; thirdly, the starting torque is small. Contents of the invention [0003] The single-phase AC permanent magnet synchronous motor of the invention can make the loss of the permanent magnet rotor zero and ensure the slip rate of the motor is zero; at the same time, th...

AI Technical Summary

Problems solved by technology

This kind of motor has the following disadvantages: firstly, the copper loss and iron loss of the motor rotor are relatively large, and the two losses generally account for about 17% of the total loss. With the internal temperature rise of the motor, the copper loss and iron loss of the stator The loss increases in direct proportion; the second is that the asynchronous motor has the disadvantage of large slip, generally within 10%, resulting in a reduction in motor efficiency and output power; the third is that the starting torque is small

Images