Self-starting three-phase synchronous reluctance motor rotor

Abstract

The invention relates to the field of motor equipment, in particular to a self-starting three-phase synchronous reluctance motor rotor. The rotor comprises a rotor iron core, the rotor iron core is formed by axially laminating a plurality of iron core punching sheets with rotating shaft holes in the centers, the iron core punching sheets located on the periphery of the rotating shaft holes are provided with rectangular magnetic barriers with the circle center as the symmetric center, and each rectangular magnetic barrier comprises four independently-arranged edge magnetic barriers. Each side magnetic barrier is provided with two independent and symmetrical magnetic barriers, the end part of each magnetic barrier extends to the periphery of the iron core punching sheet, each magnetic barrier forms a first cast aluminum groove of the iron core punching sheet, and cast aluminum is formed in the first cast aluminum groove to form a first cast aluminum conducting bar. The unique iron core punching sheet structure ensures that the rotor resistance is small, the starting current is reduced and the starting torque is increased in the starting process, so that the motor can be started smoothly. The cast aluminum conducting bars are additionally arranged on the rotor structure, asynchronous operation torque is achieved at the asynchronous speed, and when the torque is large enough, the motor has the self-starting capacity.

Description

technical field [0001] The invention relates to the field of motor equipment, in particular to a self-starting three-phase synchronous reluctance motor rotor. Background technique [0002] Synchronous reluctance motors have attracted attention in low-cost and high-efficiency applications such as fans and water pumps due to their low price and excellent performance. However, the traditional synchronous reluctance motor needs to be powered by a frequency converter, which increases the size and cost of the system. [0003] Existing self-starting synchronous reluctance motor rotor punching, such as figure 1 As shown, its structural characteristics are as follows: [0004] a. A grid-shaped magnetic barrier 2 is punched around the silicon steel sheet 1, and the magnetic barrier 2 occupies a relatively large space of the rotor, resulting in no extra space for the squirrel cage bar 3 to be arranged. [0005] b. There is a squirrel cage guide bar 3 outside the magnetic barrier 2. ...

AI Technical Summary

Problems solved by technology

[0005] b. There is a squirrel cage guide bar 3 outside the magnetic barrier 2. When the motor runs stably, the presence of the guide bar 3 intensifies the inhomogeneity of the reluctance change, resulting in a non-constant value of the d-axis inductance and the q-axis inductance, thereby increasing the The torque ripple of the motor will cause vibration and noise during steady-state operation

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