A vernier permanent magnet motor with coded auxiliary teeth in the stator
A permanent magnet motor and stator technology, applied in the direction of magnetic circuit, synchronous machine, electric components, etc., can solve the problems that are difficult to further improve, and achieve the effect of strong motor torque output capability, rich harmonics, and improved slot fill rate
Active Publication Date: 2021-10-08
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 coded auxiliary teeth on the stator, belonging to the technical field of permanent magnet motors, comprising: a stator and a rotor that are coaxially sleeved; The side surface of the gap is provided with a coded auxiliary tooth structure, and a part of the coded auxiliary tooth structure is provided with a first permanent magnet; a plurality of pairs of alternately distributed second permanent magnets and Ferromagnet; the first permanent magnet and the ferromagnet generate a first magnetic field, the second permanent magnet and the coded auxiliary tooth structure generate a second magnetic field, and the magnetic field is superimposed to form a working magnetic field. The coded auxiliary tooth structure interacts with the permanent magnets on the rotor, and the permanent magnets on the coded auxiliary tooth structure interact with the ferromagnets on the rotor, and the generated magnetic fields are superimposed on each other to form multiple working magnetic fields. The phase of the back EMF generated by the main working magnetic field harmonics in the windings is consistent, which makes the motor have a 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