Hybrid excitation rotor permanent magnet vernier motor

Abstract

The invention discloses a hybrid excitation rotor permanent magnet vernier motor, and belongs to the field of motors. A rotor is sleeved with a stator, and an air gap is formed between the rotor and the stator. The stator comprises a stator iron core and a stator winding, the stator iron core comprises a stator yoke part, first modulation teeth and second modulation teeth, the end parts of the first modulation teeth are two split teeth, and the first modulation teeth and the second modulation teeth are connected with the stator yoke part and are alternately distributed on the circumference ofan upper iron core; the second modulation teeth and the split teeth are the same in width; all phases of windings of the stator winding are connected in a single-tooth concentrated winding manner andare wound on the split teeth at equal intervals; and direct-current bias current is introduced into the stator winding. According to motor topology, the space of an inner cavity of the rotor is fullyutilized, the excitation effect of an excitation magnetic field and direct current is enhanced, and the torque density is greatly improved; direct-current bias current is adopted to flexibly adjust distribution of magnetic loads and electric loads, and the power factor of the motor can be well improved.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a mixed excitation rotor permanent magnet vernier motor. Background technique [0002] With the rapid development of new materials, new processes, power electronics and automatic control technologies, especially the mass production of high-performance permanent magnet materials represented by NdFeB, permanent magnet motors have shown the traditional motor such as induction motor, electric motor Exciting synchronous motors and other unmatched excellent performance, such as high torque density, high power density, high efficiency, etc. Therefore, starting from the basic theory of electromechanical energy conversion, continuous research on motors based on new topologies and new principles to achieve a significant increase in motor performance, especially torque density, has gradually become an important research direction in the motor industry. The vernier permanent magnet motor based on the ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of too many motor magnetic sources in the prior art, the stator yoke and teeth are easily saturated and the cost is high, and to provide a rotor permanent magnet vernier motor with hybrid excitation

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