Single-layer concentrated winding DC injection type cursor reluctance machine

Abstract

The invention discloses a single-layer concentrated winding DC injection type cursor reluctance machine. The single-layer concentrated winding DC injection type cursor reluctance machine comprise a stator (1), a rotor (2) and windings (3), wherein the stator (1) and the rotor (2) are both of salient pole structures, the single-layer concentrated winding DC injection type cursor reluctance machine is characterized in that the windings (3) are single-layer fractional-slot non-overlapping concentrated windings, a current in each winding comprises a sine AC component and a DC component, the sine AC component is used for generating a rotation magnetic potential, and the DC component is used for generating a rotation magnetic field. The reluctance machine is a single-layer winding, and no inter-insulator is needed. Compared with the prior art, the single-layer concentrated winding DC injection type cursor reluctance machine has the advantages that the space factor can be improved, and the torque density of the machine is further improved; and moreover, compared with the prior art, the single-layer concentrated winding DC injection type cursor reluctance machine has the advantages that the least common multiple of the stator Z1 and the rotor slots Z2 of the reluctance machine proposed by the invention is improved, and the torque pulse is reduced below 30%.

Description

technical field [0001] The invention belongs to the field of reluctance motors, and more specifically relates to a single-layer concentrated winding DC injection type vernier reluctance motor. Background technique [0002] Permanent magnet motors have the advantages of high power density, high efficiency, and high power factor, and have been widely used in servo systems, electric vehicle drive systems, and wind power generation. However, the permanent magnets of permanent magnet motors, especially rare earth permanent magnets, are expensive and fluctuate greatly, resulting in high cost of permanent magnet motor systems. In some cost-sensitive applications, the application of permanent magnet motors is limited. . In addition, because the permanent magnet flux linkage is difficult to adjust and it is difficult to demagnetize under fault conditions such as short circuits, the application of permanent magnet motors in aerospace and other fields is also relatively limited. [0...

AI Technical Summary

Problems solved by technology

[0011] (1) The winding of the reluctance motor is a double-layer winding, and phase-to-phase insulation needs to be laid in the stator slot, which occupies a part of the space in the slot, and the slot filling rate is not high, so the torque density of the motor is not high;

Images