A Double Stator Tangentially Excited Magnetic Field Modulation Motor

Abstract

The invention belongs to the technical field related to motors, and discloses a double-stator tangential excitation magnetic field modulation motor, the motor includes an outer stator, an inner stator and a rotor, and the outer stator, the inner stator and the rotor are coaxial , the rotor is located between the outer stator and the inner stator; the inner stator includes a cylindrical inner stator core, and a plurality of permanent magnet units are embedded on the inner stator core, each permanent magnet The unit includes six permanent magnets arranged at intervals along the circumference of the inner stator core, the permanent magnets at the second and fifth positions have the same width, and the permanent magnets at the first, third, fourth and sixth positions The widths of the permanent magnets are equal, and the width of the permanent magnets located in the second position is not equal to the width of the permanent magnets located in the first position. The invention improves back electromotive force, torque density, power factor and efficiency.

Description

Technical field [0001] The present invention belongs to the art of the technology, and more particularly to a dual-stator tangential excitation magnetic field modulation motor. Background technique [0002] The traditional double-tangential excitation magnetic field modulation motor has the advantages of compact, fast dynamic, and high efficiency, so the dual stator tangential excitation magnetic field modulation motor is suitable for a variety of high and low speed operation. [0003] Currently, those skilled in the art have done some research, such as patent CN107276350B and patent CN105375715B, a dual-stator cut-to-magnetic field modulation motor disclosed in CN105375715B, can be used in high-speed rotation of electric vehicles, and the dual-strand tangential excitation magnetic field disclosed in Patent CN1096000A The modulation motor can be used for low-speed rotation of wind power generation; however, in the existing double-tangential direction of excitation magnetic field ...

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Problems solved by technology

[0003] At present, those skilled in the art have done some research, for example, the double-stator tangential excitation field modulation motor disclosed in patent CN107276350B and patent CN105375715B can be used in high-speed rotating occasions such as electric vehicles, and the double-stator tangential field field modulation motor disclosed in patent CN109600010A Modulation motors can be used in low-speed rotating occasions such as wind power generation; however, in the existing double-stator tangential excitation magnetic field modulation motors, the width of the permanent magnets is the same, and the harmonics of the permanent magnet magnetomotive force are single, resulting in the use of permanent magnets. Lower efficiency, lower torque density, lower power factor

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