Electromagnetic analysis and design of in-wheel motor of micro-electric vehicle based on Maxwell

Abstract

To obtain a good drivability and high efficiency of the micro-electric vehicle, a new driving in-wheel motor design was analyzed and optimized. Maxwell software was used to build finite element simulation model of the driving in-wheel motor. The basic features and starting process were analyzed by field-circuit coupled finite element method. The internal complicated magnetic field distribution and dynamic performance simulation were obtained in different positions. No-load and load characteristics of the driving in-wheel motor was simulated, and the power consumption of materials was computed. The conformity of the final simulation results with the experimental data indicates that this method can be used to provide a theoretical basis to make further optimal design of this new driving in-wheel motor and its control system, so as to improve the starting torque and reduce torque ripple of the motor. This method can shorten the development cycle of in-wheel motors and save development costs, which has a wide range of engineering application value.

Keywords

micro-electric vehicle / in-wheel motor / Maxwell / simulation / optimization

References

[1] ChuW. Q., GuC.. Applications and developing trend of in-wheel motors home and abroad [J]. Small Electrical Machines, 2007, 40(7): 77-81

[2] GuC.. Comprehensive review of electric vehicle PM wheel motors [J]. Micromotor, 2008, 41(2): 56-59

[3] LiuR.-f., YanD.-j., HuM.-qiang.. Field circuit and movement coupled time stepping finite element analysis on permanent magnet brushless DC motors [J]. Proceedings of the CSEE, 2007, 27(12): 59-64

[4] LorenzoR., EnricoB., FabiO.. Preliminary experimental evaluation of a four wheel motors, batteries plus ultracapacitors and series hybrid powertrain [J]. Applied Energy, 2011, 88(2): 442-448

[5] SonH., LeeK.. Two DOF magnetic orientation sensor using distributed multipole models for spherical wheel motor [J]. Mechatronics, 2011, 21(1): 156-165

[6] WangJ., WangQ., JinL., SongC.. Independent wheel torque control of 4WD electric vehicle for differential drive assisted steering [J]. Mechatronics, 2011, 21(1): 63-76

[7] ZhaoB., ZhangH.-liang.Ansoft 12 in project electromagnetic field application [M], 2010BeijingChina Water Power Publications153-174

[8] YangZ. B., HuangZ. Y., ZhangX. H.. Simulation and analysis starting performance of switched reluctance motor based on ansoft/maxwell 2D [J]. Micromotor, 2009, 42(8): 19-22

[9] ZhangW.-m., LiW.-l., ShenJ.-feng.. Calculation and simulation of the back EMF and cogging torque of brushless DC motor [J]. Journal of Harbin Institute of Technology, 2006, 38(2): 297-300

[10] WangJ.-q., WangF.-x., KongX.-guang.. Design and analysis of electromagnetic properties for high speed PM generator [J]. Proceedings of the CSEE, 2008, 28(20): 105-110

[11] HyungB. I., HongH. Y., ChungJ. T.. Dynamic analysis of a BLDC motor with mechanical and electromagnetic interaction due to air gap variation [J]. Journal of Sound and Vibration, 2011, 330(8): 1680-1691

[12] HuangP.-l., HuQ.-s., CuiY., HuangY.-kai.. Analytical calculation of the iron losses of electric machine fed by PWM inverter [J]. Proceedings of the CSEE, 2007, 27(12): 19-26

[13] XuP., HouZ., GuoG. F., XuG., CaoB. G., LiuZ. C.. Driving and control of torque for direct-wheel-driven electric vehicle with motors in serial [J]. Expert Systems with Applications, 2011, 38(1): 80-86

[14] HwangC. C., ChangJ. J.. Design and analysis of a high power density and high efficiency permanent magnet DC motor [J]. Journal of Magnetism and Magnetic Materials, 2000, 209(2): 234-236

[15] WangR., ChenY., FengD. W., HuangX. Y., WangJ. M.. Development and performance characterization of an electric ground vehicle with independently actuated in-wheel motors [J]. Journal of Power Sources, 2011, 196(8): 3962-3971