Influence of Variable Air Gap on the Electromagnetic Performances of Permanent Magnet Brushless DC Motor

Zhengrong Wang; Rennian Li; Gaoping Xu; Wei Han; Mingkuo Bian; Weiwei Zhou; Qinjiang Sun

doi:10.5293/IJFMS.2021.14.4.383

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자료유형: 학술저널

저자정보: Zhengrong Wang (Lanzhou University of Technology) Rennian Li (Lanzhou University of Technology) Gaoping Xu (Lanzhou University of Technology) Wei Han (Lanzhou University of Technology) Mingkuo Bian (Lanzhou University of Technology) Weiwei Zhou (CNOOC China) Qinjiang Sun (CNOOC China)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.14 No.4

발행연도: 2021.12

수록면: 383 - 393 (11page)

DOI: 10.5293/IJFMS.2021.14.4.383

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Simulation models of permanent magnet brushless DC motor with cam rotors and two kinds of uniform air gap motor determined by two limit arcs of the cam rotor were established on the basis of JMAG software. These simulation models were used to determine the influence of regularly varying air gap, which is formed during the rotation of the two cam rotors of the hydraulic motor pumps integrated with a cam rotor vane pump and a permanent magnet brushless DC motor, on the electromagnetic performance of the motor. The electromagnetic performance of the three kinds of motors were simulated and compared under rated and variable loads, respectively. Finally, the cam rotor motor prototype was developed for experimental research. Results show that the starting time of cam rotor motor under rated load is 20% shorter, and its output torque ripple is 23% smaller than those of the uniform air gap motor determined by the minimum limit arc of the cam rotor. However, the air gap flux density curve of the cam rotor motor weakens obviously amongst the three motors. Under different loads, the efficiency of the cam rotor motor is the highest amongst the three motors, and its mechanical property is hard. The research results can lay a theoretical foundation for the development of cam rotor motor pumps.

#Permanent magnet brushless DC motor #motor pump #cam rotor #variable air gap #electromagnetic performance

Abstract
1. Introduction
2. Structure of a Cam Rotor Motor
3. Simulation Model of the Cam Rotor Motor
4. Simulation Analysis of Electromagnetic Performances of the Motors with Variable or Uniform Air Gap
5. Experimental Study on the Electromagnetic Performances of the Cam Rotor Motor with Variable Air Gap
6. Conclusion
References

참고문헌 (22)

참고문헌 신청

Cho, B. / 2021 / Design of a Compact Embedded Hydraulic Power Unit for Bipedal Robots / IEEE Robotics and Automation Letters 6(2):3631~3638

Liu, H. / 2020 / Research on Energy Consumption of Injection Molding Machine Driven by Five Different Types of Electro-Hydraulic Power Units / Journal of Cleaner Production 242:118355

Zhang, X. N. / 2013 / Temperature Field of Electro-Hydraulic Pump with Finite Element Model / International Conference on Mechatronics, Robotics and Automation (ICMRA 2013) :146~153

Wehner, D. / 2005 / Integrated Electric-Hydraulic Drives for Power and Motion Control / 6th International Conference on Fluid Power Transmission and Control

Fu, Y. L. / 2012 / State of the Art and Core Techniques of Edropump / Machine Tool & Hydraulics 40(1):143~149

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