Tangential motor, tangential motor rotor and rotor iron core thereof

Abstract

The invention discloses a tangential motor, a tangential motor rotor and a rotor iron core thereof. The rotor iron core comprises a rotor body (1) and permanent magnet slots (2) which are arranged on the rotor body (1). A rotor magnetic pole between the two permanent magnet slots (2) is provided with a fixing hole (11) used for fixing a rotor punching sheet, 2N magnetic isolation holes (12) and 2M auxiliary holes (13). The 2N magnetic isolation holes (12) and the 2M auxiliary holes (13) are symmetrically arranged at the two sides of the magnetic pole center line of the rotor magnetic pole. The magnetic isolation holes (12) are arranged at the external side of the fixing hole (11). The auxiliary holes (13) are communicated with the permanent magnet slots (2). The width of the magnetic isolation holes (12) and the auxiliary holes (13) increases along the direction from the center of circle of the rotor body (1) to the external side. The width of the material part of the magnetic pole between the two magnetic isolation holes (12) close to the magnetic pole center line increases along the direction from the external side of the rotor body (1) to the center of circle. According to the rotor iron core, the motor vibration noise can be reduced.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a tangential motor, a tangential motor rotor and a rotor core thereof. Background technique [0002] Because the tangential permanent magnet synchronous motor has the effect of "magnetic accumulation", it can generate higher air gap magnetic density compared with the radial permanent magnet synchronous motor, which makes the motor have small size, light weight, large torque and high power density. Large, high motor efficiency and good dynamic performance, etc., are more and more used in servo systems, electric traction and other industrial fields and home appliance industries. [0003] At present, the air-gap flux density and back EMF of tangential permanent magnet synchronous motors contain various space harmonics. Due to the slots on the stator of tangential permanent magnet synchronous The potential contains various kinds of space harmonics, and the harmonics account ...

AI Technical Summary

Problems solved by technology

[0003] At present, the air-gap flux density and back EMF of tangential permanent magnet synchronous motors contain various space harmonics. Due to the slots on the stator of tangential permanent magnet synchronous The potential contains various space harmonics, and the proportion of harmonics is large. The interaction of various harmonics generates low-order force waves, which increases the vibration and noise of the motor

The sine degree of the waveform is poor, and the waveform distortion rate is high, which makes the vibration and noise of the motor larger, which affects the user's health and limits the application and promotion of the motor

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