A high torque density surface mount permanent magnet reluctance synchronous motor rotor structure

Abstract

The invention discloses a high-torque density surface mounted permanent magnet and magnetic resistance synchronous motor rotor structure. The high-torque density surface mounted permanent and magnetic resistance synchronous motor rotor structure comprises a central rotation shaft and a rotor iron core; 2P groups of grooves are evenly formed on the rotor iron core along the circumferential surface of the rotor iron core; permanent magnets are arranged in each group of grooves; 2P groups of through slots are formed in the rotor iron core along a circumferential direction; and each group of through slots includes two layers of U-shaped through slots which are arranged at intervals along the radial direction of the rotor iron core. According to the high-torque density surface mounted permanent magnet and magnetic resistance synchronous motor rotor structure of the invention, permanent magnet torques generated by the permanent magnets can be fully utilized, and magnetic resistance torques can be used in combination, so that motor torque density can be improved.

Description

technical field [0001] The invention relates to a high torque density surface-mounted permanent magnet reluctance synchronous motor rotor structure, which belongs to the permanent magnet motor technology. Background technique [0002] Permanent magnet motors have the advantages of high efficiency, high power density and good controllability, and have been widely used in industrial production and daily life. Traditional permanent magnet motors usually use i d =0 control, the reluctance torque is not utilized, resulting in a waste of the reluctance torque component. Although the permanent magnet torque component and the reluctance torque component are used at the same time when the maximum power-current ratio is used to control the traditional permanent magnet motor, the two do not reach the maximum at the same time as the maximum value of the combined torque, and still cause a certain degree of torque loss. waste. [0003] Increasing the torque density of the motor is part...

AI Technical Summary

Problems solved by technology

Traditional permanent magnet motors usually use i d =0 control, and the reluctance torque is not utilized, resulting in the waste of the reluctance torque component

Although the permanent magnet torque component and the reluctance torque component are used at the same time when the maximum power-current ratio is used to control the traditional permanent magnet motor, the two do not reach the maximum at the same time as the maximum value of the combined torque, and still cause a certain degree of torque loss. waste of

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