Motor rotor and reluctance motor

Abstract

The invention provides a motor rotor and a reluctance motor. The motor rotor comprises a rotor core (1), wherein the rotor core (1) includes a plurality of magnetic barrier groups arranged in a circumferential direction, each magnetic barrier group includes at least two magnetic flux barriers (2) arranged at intervals in a radial direction, a magnetic conduction channel (3) is formed between everytwo adjacent magnetic flux barriers (2), a radially magnetized permanent magnet (4) is attached to an outer circumferential wall of the rotor core (1), and a d axis of the permanent magnet (4) and areluctance q axis coincide under a same pole. According to the motor rotor, an output torque of the motor can be effectively improved in a bidirectional rotation process of the motor, working performance of the motor is increased, and an application range of the motor is 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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