Design and analysis of an axial flux permanent magnet motor for the direct drive radial piston pump

2019 ◽  
Vol 233 (19-20) ◽  
pp. 7077-7088
Author(s):  
Jingxiang Li ◽  
Xingwang Meng ◽  
Peng Dong ◽  
Shengdun Zhao
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Three Dimensional ◽  
Piston Pump ◽  
Direct Drive ◽  
Axial Flux ◽  
Drive Motor ◽  
Dimensional Finite Element ◽  
New Type ◽  
Three Dimensional Finite Element

Direct drive motor-pumps have attracted a lot of attention from researchers because of high efficiency and compact structure. This paper presents a new type of direct drive motor-pump, which integrates the structure of the radial piston pump and axial-flux permanent-magnet machine. The rotor of the disc motor is fixedly connected to the pump rotor, and the new pump uses a new type of distribution shaft for oil distribution. This structure reduces the intermediate transmission mechanism, and the application of the disc motor further reduces the axial size, the overall volume, and heat dissipation. The efficiency of the entire system has been improved. The three-dimensional finite element method is used to dynamically analyze flow field in the flow channel, which is extracted and simplified. The flow and pressure of the pump meet the design requirements in the simulation. A disc motor was designed for the pump, and the theoretical formula of the disc motor was derived. The initial size of the motor was obtained. The response surface method and three-dimensional finite element are used to optimize the corresponding axial-flux permanent-magnet machine. Loading the torque condition of the pump to the load end of the motor, the response of the motor meets the requirements.

scholarly journals Design and Analysis of a Permanent Magnet Vernier Machine with Non-Uniform Tooth Distribution

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7816
Author(s):  
Fei Zhao ◽  
Mengzhu Cao ◽  
Encheng Tao ◽  
Liyi Li
Keyword(s):  
Permanent Magnet ◽  
Uniform Design ◽  
Three Dimensional ◽  
Torque Ripple ◽  
Uniform Structure ◽  
Direct Drive ◽  
Cogging Torque ◽  
Dimensional Finite Element ◽  
Aerial Vehicle ◽  
Three Dimensional Finite Element

To improve the torque performance of the permanent magnet vernier machine in the direct-drive system for Unmanned Aerial Vehicle (UAV), this paper proposes the topology of non-uniform tooth distribution. This distribution, considering the additional flux harmonics, aims to contribute to torque improvement, whereas the cogging torque also increases at the same time. A phasors method is proposed to solve the issue caused by the non-uniform structure, adjusting the mechanic angle of each tooth reasonably to restrict the cogging torque. In addition, the non-uniform design is illustrated in detail, which includes the method of grouping the teeth, considering the factors of series pole ratio and winding layout. By using the three-dimensional finite element method, torque is significantly increased without additional torque ripple, which satisfies the desired design target.

Structure Design and Torque Characteristics Analysis of a Novel Transverse Flux Permanent Magnet Motor

2015 ◽  
Vol 719-720 ◽  
pp. 644-651
Author(s):  
Yu Feng Zhuang ◽  
Ze Yan Hu ◽  
Kai He
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Three Dimensional ◽  
Permanent Magnet Motor ◽  
Element Analysis ◽  
Output Torque ◽  
Dimensional Finite Element ◽  
Transverse Flux ◽  
Three Dimensional Finite Element

A new type of transverse flux permanent magnet motor with surface-type permanent magnet rotor structure and silicon steel stator structure was designed. According to the new structure of transverse flux permanent magnet motor, the operating principle of the motor was given. The relationship among motor output torque, torque density, magnetic poles and winding parameters are deduced, and a reasonable method of designing motor size parameters was proposed. A three-dimensional finite element model of the motor was created and the model grid division was done using ANSYS finite element analysis software. According to different winding current values and different positions of stator and rotor, the motor magnetic flux density distribution, the output torque and inductance parameter were given through calculating the three dimensional finite element models. Finite element analysis results show that the new motor structure is reasonable.

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