Motor rotors and reluctance motors

Abstract

The application provides a motor rotor and a reluctance motor. The motor rotor includes a rotor core (1), and the rotor core (1) includes a plurality of magnetic barrier groups arranged in the circumferential direction, and each magnetic barrier group includes at least two magnetic flux barriers (2) arranged at intervals in the radial direction , a magnetic conduction channel (3) is formed between adjacent flux barriers (2), and a radially magnetized permanent magnet (4) is attached to the outer peripheral wall of the rotor core (1). Under the same pole, the permanent magnet (4) The d-axis coincides with the reluctance q-axis. According to the motor rotor of the present application, the output torque of the motor can be effectively increased during the bidirectional rotation of the motor, the working performance of the motor can be improved, and the use range of the motor can be enlarged.

Description

technical field [0001] The present application relates to the technical field of motor equipment, in particular to a motor rotor and a reluctance motor. Background technique [0002] At present, asynchronous motor systems are mostly used in the field of electrical transmission. Compared with asynchronous motor systems, permanent magnet motor systems have the characteristics of low loss and high efficiency, which is the development trend of the next generation of transmission systems. Due to the high back electromotive force of ordinary permanent magnet synchronous motors, there is a danger of damaging the inverter during high-speed operation, so permanent magnet assisted synchronous reluctance motors are favored. [0003] The synchronous reluctance motor has high reliability, because there is no permanent magnet on the rotor, so there is no risk of loss of magnetism, but the low power factor is a major shortcoming of the synchronous reluctance motor, which requires the inver...

AI Technical Summary

Problems solved by technology

However, for this solution, due to the offset placement of the permanent magnets, the torque density of the permanent magnets is biased. When the motor rotates in one direction, the torque output of the motor can be effectively improved. When the motor rotates in both directions, the In one of the directions, the increase in the output torque of the motor will be greatly reduced, resulting in a significant decrease in the performance of the motor, which seriously limits the scope of use of the motor

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