Vernier permanent magnet motor with stator provided with coded auxiliary teeth
A permanent magnet motor and stator technology, applied in the direction of magnetic circuits, synchronous machines, electric components, etc., can solve problems such as difficult to further upgrade, and achieve the effect of strong motor torque output capability, strong torque output capability, and large installation area
Active Publication Date: 2021-03-19
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
The torque density of traditional permanent magnet motors is limited by the development of high-performance materials and cooling systems, making it difficult to further improve
Method used
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0029] In the present invention, the terms "first", "second" and the like (if any) in the present invention and drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0030] figure 1 A structural schematic diagram of a vernier permanent magnet motor with a stator having coded auxiliary teeth provided for an embodiment of the pr...
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The invention discloses a vernier permanent magnet motor with a stator provided with coded auxiliary teeth, and belongs to the technical field of permanent magnet motors. The vernier permanent magnetmotor comprises the stator and a rotor which are coaxially sleeved, and an air gap is formed between the stator and the rotor; an encoding type auxiliary tooth structure is arranged on the side face,close to the air gap, in the stator, and a first permanent magnet is arranged on a part of the encoding type auxiliary tooth structure; a plurality of pairs of alternately distributed second permanentmagnets and ferromagnets are arranged on the side surface, close to the air gap, in the rotor in a surrounding manner; and the first permanent magnet and the ferromagnet generate a first magnetic field, the second permanent magnet and the coding type auxiliary tooth structure generate a second magnetic field, and the magnetic fields are superposed to form a working magnetic field. The encoding type auxiliary tooth structure interacts with the permanent magnet on the rotor, the permanent magnet on the encoding type auxiliary tooth structure interacts with the ferromagnet on the rotor, the generated magnetic fields are mutually superposed to form a plurality of working magnetic fields, the amplitude of the working magnetic fields is larger, and the phases of counter electromotive forces generated by harmonic waves of the main working magnetic fields in the windings are consistent. Therefore, the motor has stronger torque output capability.
Description
technical field [0001] The invention belongs to the technical field of permanent magnet motors, and more specifically relates to a vernier permanent magnet motor whose stator has coded auxiliary teeth. Background technique [0002] As the core part of major manufacturing equipment such as industrial robots, chip manufacturing equipment, and CNC machine tools, motors play an important role in the performance of manufacturing equipment. With the continuous improvement of the performance of manufacturing equipment, higher requirements are put forward for the performance of the motor such as torque density, response speed, and torque ripple. [0003] High torque density has always been the main goal of motor development, which is of great significance for reducing the size and cost of the drive system and improving the response speed of the system. The torque density of traditional permanent magnet motors is limited by the development of high-performance materials and cooling s...
Claims
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IPC IPC(8): H02K1/14H02K1/17H02K1/27H02K3/52H02K21/02
CPCH02K1/146H02K1/17H02K1/278H02K1/2786H02K3/522H02K21/024H02K2201/03H02K1/2746H02K1/2791
Inventor 李大伟房莉任翔曲荣海
Owner HUAZHONG UNIV OF SCI & TECH